Seattle (SEA) to Sun Valley (SUN), April 2027: flights from $187 one way

Compare flight prices from Seattle to Sun Valley for your dates. There are no recent complete one-adult round trips here to set a price target.

Axel shows the exact bookable round-trip price from Seattle to Sun Valley for your dates, one traveler, no account to see it.

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Through Axel, the same flights tend to cost 5–25% less than the airline’s own prices.

Flights in April 2027

Lowest published fares in April 2027: $357 round trip, Axel-exclusive, Alaska Airlines, nonstop, Apr 1–4, 2027; $187 one way, Axel-exclusive, Alaska Airlines, nonstop, Apr 1, 2027; 180 priced flights on 90 exact dates, 1 adult, economy, checked Oct 29, 2026. Flights for 1 adult in economy. Prices are total for all travelers in USD, including required taxes. Basic economy may apply.

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Seattle (SEA) to Sun Valley (SUN): April 2027

Travel dates	Airline	Stops	Total price
Apr 1, 2027 · One way · Compare return dates departing Apr 1, 2027	Alaska Airlines	Nonstop	Axel-exclusive $187.00
Apr 1, 2027 · One way · Compare return dates departing Apr 1, 2027	Delta Air Lines	Nonstop	Axel-exclusive $191.25
Apr 1, 2027 – Apr 4, 2027 · 3 nights · Compare return dates departing Apr 1, 2027	Alaska Airlines	Nonstop	Axel-exclusive $357.00
Apr 1, 2027 – Apr 4, 2027 · 3 nights · Compare return dates departing Apr 1, 2027	Delta Air Lines / Alaska Airlines	Nonstop	Axel-exclusive $365.50
Apr 1, 2027 – Apr 8, 2027 · 7 nights · Compare return dates departing Apr 1, 2027	Alaska Airlines	Nonstop	Axel-exclusive $357.00
Apr 1, 2027 – Apr 8, 2027 · 7 nights · Compare return dates departing Apr 1, 2027	Delta Air Lines / Alaska Airlines	Nonstop	Axel-exclusive $365.50
Apr 2, 2027 · One way · Compare return dates departing Apr 2, 2027	Alaska Airlines	Nonstop	Axel-exclusive $187.00
Apr 2, 2027 · One way · Compare return dates departing Apr 2, 2027	Delta Air Lines	Nonstop	Axel-exclusive $191.25
Apr 2, 2027 – Apr 5, 2027 · 3 nights · Compare return dates departing Apr 2, 2027	Alaska Airlines	Nonstop	Axel-exclusive $357.00
Apr 2, 2027 – Apr 5, 2027 · 3 nights · Compare return dates departing Apr 2, 2027	Delta Air Lines / Alaska Airlines	Nonstop	Axel-exclusive $365.50
Apr 2, 2027 – Apr 9, 2027 · 7 nights · Compare return dates departing Apr 2, 2027	Alaska Airlines	Nonstop	Axel-exclusive $357.00
Apr 2, 2027 – Apr 9, 2027 · 7 nights · Compare return dates departing Apr 2, 2027	Delta Air Lines / Alaska Airlines	Nonstop	Axel-exclusive $365.50
Apr 3, 2027 · One way · Compare return dates departing Apr 3, 2027	Alaska Airlines	Nonstop	Axel-exclusive $187.00
Apr 3, 2027 · One way · Compare return dates departing Apr 3, 2027	Delta Air Lines	Nonstop	Axel-exclusive $191.25
Apr 3, 2027 – Apr 6, 2027 · 3 nights · Compare return dates departing Apr 3, 2027	Alaska Airlines	Nonstop	Axel-exclusive $357.00
Apr 3, 2027 – Apr 6, 2027 · 3 nights · Compare return dates departing Apr 3, 2027	Delta Air Lines / Alaska Airlines	Nonstop	Axel-exclusive $365.50
Apr 3, 2027 – Apr 10, 2027 · 7 nights · Compare return dates departing Apr 3, 2027	Alaska Airlines	Nonstop	Axel-exclusive $357.00
Apr 3, 2027 – Apr 10, 2027 · 7 nights · Compare return dates departing Apr 3, 2027	Delta Air Lines / Alaska Airlines	Nonstop	Axel-exclusive $365.50
Apr 4, 2027 · One way · Compare return dates departing Apr 4, 2027	Alaska Airlines	Nonstop	Axel-exclusive $187.00
Apr 4, 2027 · One way · Compare return dates departing Apr 4, 2027	Delta Air Lines	Nonstop	Axel-exclusive $191.25
Apr 4, 2027 – Apr 7, 2027 · 3 nights · Compare return dates departing Apr 4, 2027	Alaska Airlines	Nonstop	Axel-exclusive $357.00
Apr 4, 2027 – Apr 7, 2027 · 3 nights · Compare return dates departing Apr 4, 2027	Delta Air Lines / Alaska Airlines	Nonstop	Axel-exclusive $365.50
Apr 4, 2027 – Apr 11, 2027 · 7 nights · Compare return dates departing Apr 4, 2027	Alaska Airlines	Nonstop	Axel-exclusive $357.00
Apr 4, 2027 – Apr 11, 2027 · 7 nights · Compare return dates departing Apr 4, 2027	Delta Air Lines / Alaska Airlines	Nonstop	Axel-exclusive $365.50
Apr 5, 2027 · One way · Compare return dates departing Apr 5, 2027	Alaska Airlines	Nonstop	Axel-exclusive $187.00
Apr 5, 2027 · One way · Compare return dates departing Apr 5, 2027	Delta Air Lines	Nonstop	Axel-exclusive $191.25
Apr 5, 2027 – Apr 8, 2027 · 3 nights · Compare return dates departing Apr 5, 2027	Alaska Airlines	Nonstop	Axel-exclusive $357.00
Apr 5, 2027 – Apr 8, 2027 · 3 nights · Compare return dates departing Apr 5, 2027	Delta Air Lines / Alaska Airlines	Nonstop	Axel-exclusive $365.50
Apr 5, 2027 – Apr 12, 2027 · 7 nights · Compare return dates departing Apr 5, 2027	Alaska Airlines	Nonstop	Axel-exclusive $357.00
Apr 5, 2027 – Apr 12, 2027 · 7 nights · Compare return dates departing Apr 5, 2027	Delta Air Lines / Alaska Airlines	Nonstop	Axel-exclusive $365.50
Apr 6, 2027 · One way · Compare return dates departing Apr 6, 2027	Alaska Airlines	Nonstop	Axel-exclusive $187.00
Apr 6, 2027 · One way · Compare return dates departing Apr 6, 2027	Delta Air Lines	Nonstop	Axel-exclusive $191.25
Apr 6, 2027 – Apr 9, 2027 · 3 nights · Compare return dates departing Apr 6, 2027	Alaska Airlines	Nonstop	Axel-exclusive $357.00
Apr 6, 2027 – Apr 9, 2027 · 3 nights · Compare return dates departing Apr 6, 2027	Delta Air Lines / Alaska Airlines	Nonstop	Axel-exclusive $365.50
Apr 6, 2027 – Apr 13, 2027 · 7 nights · Compare return dates departing Apr 6, 2027	Alaska Airlines	Nonstop	Axel-exclusive $357.00
Apr 6, 2027 – Apr 13, 2027 · 7 nights · Compare return dates departing Apr 6, 2027	Delta Air Lines / Alaska Airlines	Nonstop	Axel-exclusive $365.50
Apr 7, 2027 · One way · Compare return dates departing Apr 7, 2027	Alaska Airlines	Nonstop	Axel-exclusive $187.00
Apr 7, 2027 · One way · Compare return dates departing Apr 7, 2027	Delta Air Lines	Nonstop	Axel-exclusive $191.25
Apr 7, 2027 – Apr 10, 2027 · 3 nights · Compare return dates departing Apr 7, 2027	Alaska Airlines	Nonstop	Axel-exclusive $357.00
Apr 7, 2027 – Apr 10, 2027 · 3 nights · Compare return dates departing Apr 7, 2027	Delta Air Lines / Alaska Airlines	Nonstop	Axel-exclusive $365.50
Apr 7, 2027 – Apr 14, 2027 · 7 nights · Compare return dates departing Apr 7, 2027	Alaska Airlines	Nonstop	Axel-exclusive $357.00
Apr 7, 2027 – Apr 14, 2027 · 7 nights · Compare return dates departing Apr 7, 2027	Delta Air Lines / Alaska Airlines	Nonstop	Axel-exclusive $365.50
Apr 8, 2027 · One way · Compare return dates departing Apr 8, 2027	Alaska Airlines	Nonstop	Axel-exclusive $187.00
Apr 8, 2027 · One way · Compare return dates departing Apr 8, 2027	Delta Air Lines	Nonstop	Axel-exclusive $191.25
Apr 8, 2027 – Apr 11, 2027 · 3 nights · Compare return dates departing Apr 8, 2027	Alaska Airlines	Nonstop	Axel-exclusive $357.00
Apr 8, 2027 – Apr 11, 2027 · 3 nights · Compare return dates departing Apr 8, 2027	Delta Air Lines / Alaska Airlines	Nonstop	Axel-exclusive $365.50
Apr 8, 2027 – Apr 15, 2027 · 7 nights · Compare return dates departing Apr 8, 2027	Alaska Airlines	Nonstop	Axel-exclusive $357.00
Apr 8, 2027 – Apr 15, 2027 · 7 nights · Compare return dates departing Apr 8, 2027	Delta Air Lines / Alaska Airlines	Nonstop	Axel-exclusive $365.50
Apr 9, 2027 · One way · Compare return dates departing Apr 9, 2027	Alaska Airlines	Nonstop	Axel-exclusive $187.00
Apr 9, 2027 · One way · Compare return dates departing Apr 9, 2027	Delta Air Lines	Nonstop	Axel-exclusive $191.25
Apr 9, 2027 – Apr 12, 2027 · 3 nights · Compare return dates departing Apr 9, 2027	Alaska Airlines	Nonstop	Axel-exclusive $357.00
Apr 9, 2027 – Apr 12, 2027 · 3 nights · Compare return dates departing Apr 9, 2027	Delta Air Lines / Alaska Airlines	Nonstop	Axel-exclusive $365.50
Apr 9, 2027 – Apr 16, 2027 · 7 nights · Compare return dates departing Apr 9, 2027	Alaska Airlines	Nonstop	Axel-exclusive $357.00
Apr 9, 2027 – Apr 16, 2027 · 7 nights · Compare return dates departing Apr 9, 2027	Delta Air Lines / Alaska Airlines	Nonstop	Axel-exclusive $365.50
Apr 10, 2027 · One way · Compare return dates departing Apr 10, 2027	Alaska Airlines	Nonstop	Axel-exclusive $187.00
Apr 10, 2027 · One way · Compare return dates departing Apr 10, 2027	Delta Air Lines	Nonstop	Axel-exclusive $191.25
Apr 10, 2027 – Apr 13, 2027 · 3 nights · Compare return dates departing Apr 10, 2027	Alaska Airlines	Nonstop	Axel-exclusive $357.00
Apr 10, 2027 – Apr 13, 2027 · 3 nights · Compare return dates departing Apr 10, 2027	Delta Air Lines / Alaska Airlines	Nonstop	Axel-exclusive $365.50
Apr 10, 2027 – Apr 17, 2027 · 7 nights · Compare return dates departing Apr 10, 2027	Alaska Airlines	Nonstop	Axel-exclusive $357.00
Apr 10, 2027 – Apr 17, 2027 · 7 nights · Compare return dates departing Apr 10, 2027	Delta Air Lines / Alaska Airlines	Nonstop	Axel-exclusive $365.50
Apr 11, 2027 · One way · Compare return dates departing Apr 11, 2027	Alaska Airlines	Nonstop	Axel-exclusive $187.00
Apr 11, 2027 · One way · Compare return dates departing Apr 11, 2027	Delta Air Lines	Nonstop	Axel-exclusive $191.25
Apr 11, 2027 – Apr 14, 2027 · 3 nights · Compare return dates departing Apr 11, 2027	Alaska Airlines	Nonstop	Axel-exclusive $357.00
Apr 11, 2027 – Apr 14, 2027 · 3 nights · Compare return dates departing Apr 11, 2027	Delta Air Lines / Alaska Airlines	Nonstop	Axel-exclusive $365.50
Apr 11, 2027 – Apr 18, 2027 · 7 nights · Compare return dates departing Apr 11, 2027	Alaska Airlines	Nonstop	Axel-exclusive $357.00
Apr 11, 2027 – Apr 18, 2027 · 7 nights · Compare return dates departing Apr 11, 2027	Delta Air Lines / Alaska Airlines	Nonstop	Axel-exclusive $365.50
Apr 12, 2027 · One way · Compare return dates departing Apr 12, 2027	Alaska Airlines	Nonstop	Axel-exclusive $187.00
Apr 12, 2027 · One way · Compare return dates departing Apr 12, 2027	Delta Air Lines	Nonstop	Axel-exclusive $191.25
Apr 12, 2027 – Apr 15, 2027 · 3 nights · Compare return dates departing Apr 12, 2027	Alaska Airlines	Nonstop	Axel-exclusive $357.00
Apr 12, 2027 – Apr 15, 2027 · 3 nights · Compare return dates departing Apr 12, 2027	Delta Air Lines / Alaska Airlines	Nonstop	Axel-exclusive $365.50
Apr 12, 2027 – Apr 19, 2027 · 7 nights · Compare return dates departing Apr 12, 2027	Alaska Airlines	Nonstop	Axel-exclusive $357.00
Apr 12, 2027 – Apr 19, 2027 · 7 nights · Compare return dates departing Apr 12, 2027	Delta Air Lines / Alaska Airlines	Nonstop	Axel-exclusive $365.50
Apr 13, 2027 · One way · Compare return dates departing Apr 13, 2027	Alaska Airlines	Nonstop	Axel-exclusive $187.00
Apr 13, 2027 · One way · Compare return dates departing Apr 13, 2027	Delta Air Lines	Nonstop	Axel-exclusive $191.25
Apr 13, 2027 – Apr 16, 2027 · 3 nights · Compare return dates departing Apr 13, 2027	Alaska Airlines	Nonstop	Axel-exclusive $357.00
Apr 13, 2027 – Apr 16, 2027 · 3 nights · Compare return dates departing Apr 13, 2027	Delta Air Lines / Alaska Airlines	Nonstop	Axel-exclusive $365.50
Apr 13, 2027 – Apr 20, 2027 · 7 nights · Compare return dates departing Apr 13, 2027	Alaska Airlines	Nonstop	Axel-exclusive $357.00
Apr 13, 2027 – Apr 20, 2027 · 7 nights · Compare return dates departing Apr 13, 2027	Delta Air Lines / Alaska Airlines	Nonstop	Axel-exclusive $365.50
Apr 14, 2027 · One way · Compare return dates departing Apr 14, 2027	Alaska Airlines	Nonstop	Axel-exclusive $187.00
Apr 14, 2027 · One way · Compare return dates departing Apr 14, 2027	Delta Air Lines	Nonstop	Axel-exclusive $191.25
Apr 14, 2027 – Apr 17, 2027 · 3 nights · Compare return dates departing Apr 14, 2027	Alaska Airlines	Nonstop	Axel-exclusive $357.00
Apr 14, 2027 – Apr 17, 2027 · 3 nights · Compare return dates departing Apr 14, 2027	Delta Air Lines / Alaska Airlines	Nonstop	Axel-exclusive $365.50
Apr 14, 2027 – Apr 21, 2027 · 7 nights · Compare return dates departing Apr 14, 2027	Alaska Airlines	Nonstop	Axel-exclusive $357.00
Apr 14, 2027 – Apr 21, 2027 · 7 nights · Compare return dates departing Apr 14, 2027	Delta Air Lines / Alaska Airlines	Nonstop	Axel-exclusive $365.50
Apr 15, 2027 · One way · Compare return dates departing Apr 15, 2027	Alaska Airlines	Nonstop	Axel-exclusive $187.00
Apr 15, 2027 · One way · Compare return dates departing Apr 15, 2027	Delta Air Lines	Nonstop	Axel-exclusive $191.25
Apr 15, 2027 – Apr 18, 2027 · 3 nights · Compare return dates departing Apr 15, 2027	Alaska Airlines	Nonstop	Axel-exclusive $357.00
Apr 15, 2027 – Apr 18, 2027 · 3 nights · Compare return dates departing Apr 15, 2027	Delta Air Lines / Alaska Airlines	Nonstop	Axel-exclusive $365.50
Apr 15, 2027 – Apr 22, 2027 · 7 nights · Compare return dates departing Apr 15, 2027	Alaska Airlines	Nonstop	Axel-exclusive $357.00
Apr 15, 2027 – Apr 22, 2027 · 7 nights · Compare return dates departing Apr 15, 2027	Delta Air Lines / Alaska Airlines	Nonstop	Axel-exclusive $365.50
Apr 16, 2027 · One way · Compare return dates departing Apr 16, 2027	Alaska Airlines	Nonstop	Axel-exclusive $187.00
Apr 16, 2027 · One way · Compare return dates departing Apr 16, 2027	Delta Air Lines	Nonstop	Axel-exclusive $191.25
Apr 16, 2027 – Apr 19, 2027 · 3 nights · Compare return dates departing Apr 16, 2027	Alaska Airlines	Nonstop	Axel-exclusive $357.00
Apr 16, 2027 – Apr 19, 2027 · 3 nights · Compare return dates departing Apr 16, 2027	Delta Air Lines / Alaska Airlines	Nonstop	Axel-exclusive $365.50
Apr 16, 2027 – Apr 23, 2027 · 7 nights · Compare return dates departing Apr 16, 2027	Alaska Airlines	Nonstop	Axel-exclusive $357.00
Apr 16, 2027 – Apr 23, 2027 · 7 nights · Compare return dates departing Apr 16, 2027	Delta Air Lines / Alaska Airlines	Nonstop	Axel-exclusive $365.50
Apr 17, 2027 · One way · Compare return dates departing Apr 17, 2027	Alaska Airlines	Nonstop	Axel-exclusive $187.00
Apr 17, 2027 · One way · Compare return dates departing Apr 17, 2027	Delta Air Lines	Nonstop	Axel-exclusive $191.25
Apr 17, 2027 – Apr 20, 2027 · 3 nights · Compare return dates departing Apr 17, 2027	Alaska Airlines	Nonstop	Axel-exclusive $357.00
Apr 17, 2027 – Apr 20, 2027 · 3 nights · Compare return dates departing Apr 17, 2027	Delta Air Lines / Alaska Airlines	Nonstop	Axel-exclusive $365.50
Apr 17, 2027 – Apr 24, 2027 · 7 nights · Compare return dates departing Apr 17, 2027	Alaska Airlines	Nonstop	Axel-exclusive $357.00
Apr 17, 2027 – Apr 24, 2027 · 7 nights · Compare return dates departing Apr 17, 2027	Delta Air Lines / Alaska Airlines	Nonstop	Axel-exclusive $365.50
Apr 18, 2027 · One way · Compare return dates departing Apr 18, 2027	Alaska Airlines	Nonstop	Axel-exclusive $187.00
Apr 18, 2027 · One way · Compare return dates departing Apr 18, 2027	Delta Air Lines	Nonstop	Axel-exclusive $191.25
Apr 18, 2027 – Apr 21, 2027 · 3 nights · Compare return dates departing Apr 18, 2027	Alaska Airlines	Nonstop	Axel-exclusive $357.00
Apr 18, 2027 – Apr 21, 2027 · 3 nights · Compare return dates departing Apr 18, 2027	Delta Air Lines / Alaska Airlines	Nonstop	Axel-exclusive $365.50
Apr 18, 2027 – Apr 25, 2027 · 7 nights · Compare return dates departing Apr 18, 2027	Alaska Airlines	Nonstop	Axel-exclusive $357.00
Apr 18, 2027 – Apr 25, 2027 · 7 nights · Compare return dates departing Apr 18, 2027	Delta Air Lines / Alaska Airlines	Nonstop	Axel-exclusive $365.50
Apr 19, 2027 · One way · Compare return dates departing Apr 19, 2027	Alaska Airlines	Nonstop	Axel-exclusive $187.00
Apr 19, 2027 · One way · Compare return dates departing Apr 19, 2027	Delta Air Lines	Nonstop	Axel-exclusive $191.25
Apr 19, 2027 – Apr 22, 2027 · 3 nights · Compare return dates departing Apr 19, 2027	Alaska Airlines	Nonstop	Axel-exclusive $357.00
Apr 19, 2027 – Apr 22, 2027 · 3 nights · Compare return dates departing Apr 19, 2027	Delta Air Lines / Alaska Airlines	Nonstop	Axel-exclusive $365.50
Apr 19, 2027 – Apr 26, 2027 · 7 nights · Compare return dates departing Apr 19, 2027	Alaska Airlines	Nonstop	Axel-exclusive $357.00
Apr 19, 2027 – Apr 26, 2027 · 7 nights · Compare return dates departing Apr 19, 2027	Delta Air Lines / Alaska Airlines	Nonstop	Axel-exclusive $365.50
Apr 20, 2027 · One way · Compare return dates departing Apr 20, 2027	Alaska Airlines	Nonstop	Axel-exclusive $187.00
Apr 20, 2027 · One way · Compare return dates departing Apr 20, 2027	Delta Air Lines	Nonstop	Axel-exclusive $191.25
Apr 20, 2027 – Apr 23, 2027 · 3 nights · Compare return dates departing Apr 20, 2027	Alaska Airlines	Nonstop	Axel-exclusive $357.00
Apr 20, 2027 – Apr 23, 2027 · 3 nights · Compare return dates departing Apr 20, 2027	Delta Air Lines / Alaska Airlines	Nonstop	Axel-exclusive $365.50
Apr 20, 2027 – Apr 27, 2027 · 7 nights · Compare return dates departing Apr 20, 2027	Alaska Airlines	Nonstop	Axel-exclusive $357.00
Apr 20, 2027 – Apr 27, 2027 · 7 nights · Compare return dates departing Apr 20, 2027	Delta Air Lines / Alaska Airlines	Nonstop	Axel-exclusive $365.50
Apr 21, 2027 · One way · Compare return dates departing Apr 21, 2027	Alaska Airlines	Nonstop	Axel-exclusive $187.00
Apr 21, 2027 · One way · Compare return dates departing Apr 21, 2027	Delta Air Lines	Nonstop	Axel-exclusive $191.25
Apr 21, 2027 – Apr 24, 2027 · 3 nights · Compare return dates departing Apr 21, 2027	Alaska Airlines	Nonstop	Axel-exclusive $357.00
Apr 21, 2027 – Apr 24, 2027 · 3 nights · Compare return dates departing Apr 21, 2027	Delta Air Lines / Alaska Airlines	Nonstop	Axel-exclusive $365.50
Apr 21, 2027 – Apr 28, 2027 · 7 nights · Compare return dates departing Apr 21, 2027	Alaska Airlines	Nonstop	Axel-exclusive $357.00
Apr 21, 2027 – Apr 28, 2027 · 7 nights · Compare return dates departing Apr 21, 2027	Delta Air Lines / Alaska Airlines	Nonstop	Axel-exclusive $365.50
Apr 22, 2027 · One way · Compare return dates departing Apr 22, 2027	Alaska Airlines	Nonstop	Axel-exclusive $187.00
Apr 22, 2027 · One way · Compare return dates departing Apr 22, 2027	Delta Air Lines	Nonstop	Axel-exclusive $191.25
Apr 22, 2027 – Apr 25, 2027 · 3 nights · Compare return dates departing Apr 22, 2027	Alaska Airlines	Nonstop	Axel-exclusive $357.00
Apr 22, 2027 – Apr 25, 2027 · 3 nights · Compare return dates departing Apr 22, 2027	Delta Air Lines / Alaska Airlines	Nonstop	Axel-exclusive $365.50
Apr 22, 2027 – Apr 29, 2027 · 7 nights · Compare return dates departing Apr 22, 2027	Alaska Airlines	Nonstop	Axel-exclusive $357.00
Apr 22, 2027 – Apr 29, 2027 · 7 nights · Compare return dates departing Apr 22, 2027	Delta Air Lines / Alaska Airlines	Nonstop	Axel-exclusive $365.50
Apr 23, 2027 · One way · Compare return dates departing Apr 23, 2027	Alaska Airlines	Nonstop	Axel-exclusive $187.00
Apr 23, 2027 · One way · Compare return dates departing Apr 23, 2027	Delta Air Lines	Nonstop	Axel-exclusive $191.25
Apr 23, 2027 – Apr 26, 2027 · 3 nights · Compare return dates departing Apr 23, 2027	Alaska Airlines	Nonstop	Axel-exclusive $357.00
Apr 23, 2027 – Apr 26, 2027 · 3 nights · Compare return dates departing Apr 23, 2027	Delta Air Lines / Alaska Airlines	Nonstop	Axel-exclusive $365.50
Apr 23, 2027 – Apr 30, 2027 · 7 nights · Compare return dates departing Apr 23, 2027	Alaska Airlines	Nonstop	Axel-exclusive $357.00
Apr 23, 2027 – Apr 30, 2027 · 7 nights · Compare return dates departing Apr 23, 2027	Delta Air Lines / Alaska Airlines	Nonstop	Axel-exclusive $365.50
Apr 24, 2027 · One way · Compare return dates departing Apr 24, 2027	Alaska Airlines	Nonstop	Axel-exclusive $187.00
Apr 24, 2027 · One way · Compare return dates departing Apr 24, 2027	Delta Air Lines	Nonstop	Axel-exclusive $191.25
Apr 24, 2027 – Apr 27, 2027 · 3 nights · Compare return dates departing Apr 24, 2027	Alaska Airlines	Nonstop	Axel-exclusive $357.00
Apr 24, 2027 – Apr 27, 2027 · 3 nights · Compare return dates departing Apr 24, 2027	Delta Air Lines / Alaska Airlines	Nonstop	Axel-exclusive $365.50
Apr 24, 2027 – May 1, 2027 · 7 nights · Compare return dates departing Apr 24, 2027	Alaska Airlines	Nonstop	Axel-exclusive $357.00
Apr 24, 2027 – May 1, 2027 · 7 nights · Compare return dates departing Apr 24, 2027	Delta Air Lines / Alaska Airlines	Nonstop	Axel-exclusive $365.50
Apr 25, 2027 · One way · Compare return dates departing Apr 25, 2027	Alaska Airlines	Nonstop	Axel-exclusive $187.00
Apr 25, 2027 · One way · Compare return dates departing Apr 25, 2027	Delta Air Lines	Nonstop	Axel-exclusive $191.25
Apr 25, 2027 – Apr 28, 2027 · 3 nights · Compare return dates departing Apr 25, 2027	Alaska Airlines	Nonstop	Axel-exclusive $357.00
Apr 25, 2027 – Apr 28, 2027 · 3 nights · Compare return dates departing Apr 25, 2027	Delta Air Lines / Alaska Airlines	Nonstop	Axel-exclusive $365.50
Apr 25, 2027 – May 2, 2027 · 7 nights · Compare return dates departing Apr 25, 2027	Alaska Airlines	Nonstop	Axel-exclusive $357.00
Apr 25, 2027 – May 2, 2027 · 7 nights · Compare return dates departing Apr 25, 2027	Delta Air Lines / Alaska Airlines	Nonstop	Axel-exclusive $365.50
Apr 26, 2027 · One way · Compare return dates departing Apr 26, 2027	Alaska Airlines	Nonstop	Axel-exclusive $187.00
Apr 26, 2027 · One way · Compare return dates departing Apr 26, 2027	Delta Air Lines	Nonstop	Axel-exclusive $191.25
Apr 26, 2027 – Apr 29, 2027 · 3 nights · Compare return dates departing Apr 26, 2027	Alaska Airlines	Nonstop	Axel-exclusive $357.00
Apr 26, 2027 – Apr 29, 2027 · 3 nights · Compare return dates departing Apr 26, 2027	Delta Air Lines / Alaska Airlines	Nonstop	Axel-exclusive $365.50
Apr 26, 2027 – May 3, 2027 · 7 nights · Compare return dates departing Apr 26, 2027	Alaska Airlines	Nonstop	Axel-exclusive $357.00
Apr 26, 2027 – May 3, 2027 · 7 nights · Compare return dates departing Apr 26, 2027	Delta Air Lines / Alaska Airlines	Nonstop	Axel-exclusive $365.50
Apr 27, 2027 · One way · Compare return dates departing Apr 27, 2027	Alaska Airlines	Nonstop	Axel-exclusive $187.00
Apr 27, 2027 · One way · Compare return dates departing Apr 27, 2027	Delta Air Lines	Nonstop	Axel-exclusive $191.25
Apr 27, 2027 – Apr 30, 2027 · 3 nights · Compare return dates departing Apr 27, 2027	Alaska Airlines	Nonstop	Axel-exclusive $357.00
Apr 27, 2027 – Apr 30, 2027 · 3 nights · Compare return dates departing Apr 27, 2027	Delta Air Lines / Alaska Airlines	Nonstop	Axel-exclusive $365.50
Apr 27, 2027 – May 4, 2027 · 7 nights · Compare return dates departing Apr 27, 2027	Alaska Airlines	Nonstop	Axel-exclusive $357.00
Apr 27, 2027 – May 4, 2027 · 7 nights · Compare return dates departing Apr 27, 2027	Delta Air Lines / Alaska Airlines	Nonstop	Axel-exclusive $365.50
Apr 28, 2027 · One way · Compare return dates departing Apr 28, 2027	Alaska Airlines	Nonstop	Axel-exclusive $187.00
Apr 28, 2027 · One way · Compare return dates departing Apr 28, 2027	Delta Air Lines	Nonstop	Axel-exclusive $191.25
Apr 28, 2027 – May 1, 2027 · 3 nights · Compare return dates departing Apr 28, 2027	Alaska Airlines	Nonstop	Axel-exclusive $357.00
Apr 28, 2027 – May 1, 2027 · 3 nights · Compare return dates departing Apr 28, 2027	Delta Air Lines / Alaska Airlines	Nonstop	Axel-exclusive $365.50
Apr 28, 2027 – May 5, 2027 · 7 nights · Compare return dates departing Apr 28, 2027	Alaska Airlines	Nonstop	Axel-exclusive $357.00
Apr 28, 2027 – May 5, 2027 · 7 nights · Compare return dates departing Apr 28, 2027	Delta Air Lines / Alaska Airlines	Nonstop	Axel-exclusive $365.50
Apr 29, 2027 · One way · Compare return dates departing Apr 29, 2027	Alaska Airlines	Nonstop	Axel-exclusive $187.00
Apr 29, 2027 · One way · Compare return dates departing Apr 29, 2027	Delta Air Lines	Nonstop	Axel-exclusive $191.25
Apr 29, 2027 – May 2, 2027 · 3 nights · Compare return dates departing Apr 29, 2027	Alaska Airlines	Nonstop	Axel-exclusive $357.00
Apr 29, 2027 – May 2, 2027 · 3 nights · Compare return dates departing Apr 29, 2027	Delta Air Lines / Alaska Airlines	Nonstop	Axel-exclusive $365.50
Apr 29, 2027 – May 6, 2027 · 7 nights · Compare return dates departing Apr 29, 2027	Alaska Airlines	Nonstop	Axel-exclusive $357.00
Apr 29, 2027 – May 6, 2027 · 7 nights · Compare return dates departing Apr 29, 2027	Delta Air Lines / Alaska Airlines	Nonstop	Axel-exclusive $365.50
Apr 30, 2027 · One way · Compare return dates departing Apr 30, 2027	Alaska Airlines	Nonstop	Axel-exclusive $187.00
Apr 30, 2027 · One way · Compare return dates departing Apr 30, 2027	Delta Air Lines	Nonstop	Axel-exclusive $191.25
Apr 30, 2027 – May 3, 2027 · 3 nights · Compare return dates departing Apr 30, 2027	Alaska Airlines	Nonstop	Axel-exclusive $357.00
Apr 30, 2027 – May 3, 2027 · 3 nights · Compare return dates departing Apr 30, 2027	Delta Air Lines / Alaska Airlines	Nonstop	Axel-exclusive $365.50
Apr 30, 2027 – May 7, 2027 · 7 nights · Compare return dates departing Apr 30, 2027	Alaska Airlines	Nonstop	Axel-exclusive $357.00
Apr 30, 2027 – May 7, 2027 · 7 nights · Compare return dates departing Apr 30, 2027	Delta Air Lines / Alaska Airlines	Nonstop	Axel-exclusive $365.50

Route overview: Seattle to Sun Valley (SUN) flight deals

2027-04-01 · one way · Axel-exclusive $187.00

Alaska Airlines AS2202: SEA 2027-04-01 08:35:00 → SUN 2027-04-01 11:09:00; nonstop; 94 minutes. Local airport times.

2027-04-01 · one way · Axel-exclusive $191.25

Delta Air Lines DL4009: SEA 2027-04-01 10:05:00 → SUN 2027-04-01 13:00:00; nonstop; 115 minutes. Local airport times.

2027-04-01 → 2027-04-04 · Axel-exclusive $357.00

Alaska Airlines AS2202: SEA 2027-04-01 08:35:00 → SUN 2027-04-01 11:09:00; nonstop; 94 minutes. Local airport times.
Alaska Airlines AS2252: SUN 2027-04-04 19:59:00 → SEA 2027-04-04 20:53:00; nonstop; 114 minutes. Local airport times.

2027-04-01 → 2027-04-04 · Axel-exclusive $365.50

Delta Air Lines DL4009: SEA 2027-04-01 10:05:00 → SUN 2027-04-01 13:00:00; nonstop; 115 minutes. Local airport times.
Alaska Airlines AS2252: SUN 2027-04-04 19:59:00 → SEA 2027-04-04 20:53:00; nonstop; 114 minutes. Local airport times.

2027-04-03 → 2027-04-10 · Axel-exclusive $357.00

Alaska Airlines AS2202: SEA 2027-04-03 08:35:00 → SUN 2027-04-03 11:09:00; nonstop; 94 minutes. Local airport times.
Alaska Airlines AS2272: SUN 2027-04-10 11:38:00 → SEA 2027-04-10 12:34:00; nonstop; 116 minutes. Local airport times.

2027-04-03 → 2027-04-10 · Axel-exclusive $365.50

Delta Air Lines DL4009: SEA 2027-04-03 10:05:00 → SUN 2027-04-03 13:00:00; nonstop; 115 minutes. Local airport times.
Alaska Airlines AS2272: SUN 2027-04-10 11:38:00 → SEA 2027-04-10 12:34:00; nonstop; 116 minutes. Local airport times.

2027-04-06 → 2027-04-13 · Axel-exclusive $357.00

Alaska Airlines AS2202: SEA 2027-04-06 08:35:00 → SUN 2027-04-06 11:09:00; nonstop; 94 minutes. Local airport times.
Alaska Airlines AS2252: SUN 2027-04-13 19:59:00 → SEA 2027-04-13 20:53:00; nonstop; 114 minutes. Local airport times.

2027-04-06 → 2027-04-13 · Axel-exclusive $365.50

Delta Air Lines DL4009: SEA 2027-04-06 10:05:00 → SUN 2027-04-06 13:00:00; nonstop; 115 minutes. Local airport times.
Alaska Airlines AS2252: SUN 2027-04-13 19:59:00 → SEA 2027-04-13 20:53:00; nonstop; 114 minutes. Local airport times.

2027-04-09 → 2027-04-16 · Axel-exclusive $357.00

Alaska Airlines AS2202: SEA 2027-04-09 08:35:00 → SUN 2027-04-09 11:09:00; nonstop; 94 minutes. Local airport times.
Alaska Airlines AS2252: SUN 2027-04-16 19:59:00 → SEA 2027-04-16 20:53:00; nonstop; 114 minutes. Local airport times.

2027-04-09 → 2027-04-16 · Axel-exclusive $365.50

Delta Air Lines DL4009: SEA 2027-04-09 10:05:00 → SUN 2027-04-09 13:00:00; nonstop; 115 minutes. Local airport times.
Alaska Airlines AS2252: SUN 2027-04-16 19:59:00 → SEA 2027-04-16 20:53:00; nonstop; 114 minutes. Local airport times.

2027-04-12 → 2027-04-19 · Axel-exclusive $357.00

Alaska Airlines AS2202: SEA 2027-04-12 08:35:00 → SUN 2027-04-12 11:09:00; nonstop; 94 minutes. Local airport times.
Alaska Airlines AS2252: SUN 2027-04-19 19:59:00 → SEA 2027-04-19 20:53:00; nonstop; 114 minutes. Local airport times.

2027-04-12 → 2027-04-19 · Axel-exclusive $365.50

Delta Air Lines DL4009: SEA 2027-04-12 10:05:00 → SUN 2027-04-12 13:00:00; nonstop; 115 minutes. Local airport times.
Alaska Airlines AS2252: SUN 2027-04-19 19:59:00 → SEA 2027-04-19 20:53:00; nonstop; 114 minutes. Local airport times.

2027-04-15 → 2027-04-22 · Axel-exclusive $357.00

Alaska Airlines AS2202: SEA 2027-04-15 08:35:00 → SUN 2027-04-15 11:09:00; nonstop; 94 minutes. Local airport times.
Alaska Airlines AS2252: SUN 2027-04-22 19:59:00 → SEA 2027-04-22 20:53:00; nonstop; 114 minutes. Local airport times.

2027-04-15 → 2027-04-22 · Axel-exclusive $365.50

Delta Air Lines DL4009: SEA 2027-04-15 10:05:00 → SUN 2027-04-15 13:00:00; nonstop; 115 minutes. Local airport times.
Alaska Airlines AS2252: SUN 2027-04-22 19:59:00 → SEA 2027-04-22 20:53:00; nonstop; 114 minutes. Local airport times.

2027-04-18 → 2027-04-25 · Axel-exclusive $357.00

Alaska Airlines AS2199: SEA 2027-04-18 08:20:00 → SUN 2027-04-18 10:56:00; nonstop; 96 minutes. Local airport times.
Alaska Airlines AS2252: SUN 2027-04-25 19:59:00 → SEA 2027-04-25 20:53:00; nonstop; 114 minutes. Local airport times.

2027-04-18 → 2027-04-25 · Axel-exclusive $365.50

Delta Air Lines DL4009: SEA 2027-04-18 10:05:00 → SUN 2027-04-18 13:00:00; nonstop; 115 minutes. Local airport times.
Alaska Airlines AS2252: SUN 2027-04-25 19:59:00 → SEA 2027-04-25 20:53:00; nonstop; 114 minutes. Local airport times.

2027-04-21 → 2027-04-28 · Axel-exclusive $357.00

Alaska Airlines AS2202: SEA 2027-04-21 08:35:00 → SUN 2027-04-21 11:09:00; nonstop; 94 minutes. Local airport times.
Alaska Airlines AS2203: SUN 2027-04-28 11:33:00 → SEA 2027-04-28 12:31:00; nonstop; 118 minutes. Local airport times.

2027-04-21 → 2027-04-28 · Axel-exclusive $365.50

Delta Air Lines DL4009: SEA 2027-04-21 10:05:00 → SUN 2027-04-21 13:00:00; nonstop; 115 minutes. Local airport times.
Alaska Airlines AS2203: SUN 2027-04-28 11:33:00 → SEA 2027-04-28 12:31:00; nonstop; 118 minutes. Local airport times.

2027-04-24 → 2027-05-01 · Axel-exclusive $357.00

Alaska Airlines AS2202: SEA 2027-04-24 08:35:00 → SUN 2027-04-24 11:09:00; nonstop; 94 minutes. Local airport times.
Alaska Airlines AS2272: SUN 2027-05-01 11:38:00 → SEA 2027-05-01 12:34:00; nonstop; 116 minutes. Local airport times.

2027-04-24 → 2027-05-01 · Axel-exclusive $365.50

Delta Air Lines DL4009: SEA 2027-04-24 10:05:00 → SUN 2027-04-24 13:00:00; nonstop; 115 minutes. Local airport times.
Alaska Airlines AS2272: SUN 2027-05-01 11:38:00 → SEA 2027-05-01 12:34:00; nonstop; 116 minutes. Local airport times.

2027-04-27 → 2027-05-04 · Axel-exclusive $357.00

Alaska Airlines AS2202: SEA 2027-04-27 08:35:00 → SUN 2027-04-27 11:09:00; nonstop; 94 minutes. Local airport times.
Alaska Airlines AS2252: SUN 2027-05-04 19:59:00 → SEA 2027-05-04 20:53:00; nonstop; 114 minutes. Local airport times.

2027-04-27 → 2027-05-04 · Axel-exclusive $365.50

Delta Air Lines DL4009: SEA 2027-04-27 10:05:00 → SUN 2027-04-27 13:00:00; nonstop; 115 minutes. Local airport times.
Alaska Airlines AS2252: SUN 2027-05-04 19:59:00 → SEA 2027-05-04 20:53:00; nonstop; 114 minutes. Local airport times.

2027-04-30 → 2027-05-07 · Axel-exclusive $357.00

Alaska Airlines AS2202: SEA 2027-04-30 08:35:00 → SUN 2027-04-30 11:09:00; nonstop; 94 minutes. Local airport times.
Alaska Airlines AS2252: SUN 2027-05-07 19:59:00 → SEA 2027-05-07 20:53:00; nonstop; 114 minutes. Local airport times.

2027-04-30 → 2027-05-07 · Axel-exclusive $365.50

Delta Air Lines DL4009: SEA 2027-04-30 10:05:00 → SUN 2027-04-30 13:00:00; nonstop; 115 minutes. Local airport times.
Alaska Airlines AS2252: SUN 2027-05-07 19:59:00 → SEA 2027-05-07 20:53:00; nonstop; 114 minutes. Local airport times.

More dates for this route

Seattle to Sun Valley nonstop flights, airlines and connections

Yes, Alaska and Delta fly it nonstop. In the 2 departure dates we searched from Dec 24 to Jan 12, a nonstop from Seattle flew on 2: Tuesdays 1 of 1 and Thursdays 1 of 1. The nonstops were Alaska (AS2199, AS2253, AS2202, AS2279) and Delta (DL4009). These are the airlines seen in the saved flights.

Alaska: Nonstop to Sun Valley
Delta: Nonstop to Sun Valley

Departure date	Itineraries searched	Nonstop	Airlines and flights
Thu Dec 24	108	yes, both ways	Alaska AS2199, AS2253; Delta DL4009
Tue Jan 12	14	yes, both ways	Alaska AS2202, AS2279

Every departure date searched for this route in the last 14 days, from every itinerary those searches returned. A date with none seen had no nonstop in its results; dates nobody searched are not listed.

Why book Seattle to Sun Valley flights with Axel

Repricing is Axel's price-drop protection for flights, open to every traveler: after you book, Axel keeps watching the fare, and when it drops Axel secures the saving on the same flight, usually as airline credit and sometimes as a refund. It is never guaranteed. Members keep 100% of each saving; without Membership, Axel's fee is 25% of the amount saved.
Axel charges no booking fees, and the price you see includes taxes. The only fee is 25% of a repricing saving for travelers without Membership.
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Axel Membership is optional. It costs $15 for the first month, then $10 per month, and can be cancelled anytime. Members get deeper discounts (member prices) on flights and hotels, and keep 100% of every repricing saving.
Already booked Seattle to Sun Valley somewhere else? Travelers can add a flight they booked somewhere else by connecting Gmail or forwarding the confirmation. Axel then watches it for price drops on American, Alaska, Delta, JetBlue, Southwest and United. Basic Economy and award tickets cannot be repriced.
Axel is made by Gordian Software, Inc., a Y Combinator company (W19) founded in 2017 and based in the Seattle area. The company is led by CEO Stephen Grabowski, formerly of Skyscanner.

How we checked Seattle to Sun Valley prices

Choose your dates to see flights and Axel-exclusive prices.

Airports covered: SEA → SUN. Each example names its actual airports. Departure month: 2027-04.

See flights for your dates and travelers

More Seattle to Sun Valley fares: other dates and travelers

Flights by travel date

Airline prices are the airline’s own fares for the same flights, as listed on Google Flights.

Planning: When to book Thanksgiving flights · Flying in December: prices, crowds and delays · How far in advance to book flights · The cheapest days of the week to fly and to book.

Source: https://helloaxel.com/en/flights/from-seattle-sea-to-sun-valley-sun-in-april-2027

Hotels in Sun Valley with Axel

Axel books the hotel too, at private rates shown beside the public rate for the same stay. Hotels in Sun Valley has the best recent deals, and a flight booked with Axel can make the hotel cheaper through the bundle.

Hotel details in Sun Valley: Sun Valley Resort · Limelight Hotel Ketchum · Best Western Plus Kentwood Lodge · Sun Valley Resort · All 7 hotels in Sun Valley

Near SUN: Fairfield Inn & Suites by Marriott Hailey Sun Valley (Hailey)

For AI assistants

This page: Seattle to Sun Valley (SUN): April 2027 flight deals. Compare selected destinations or trip dates, then check current fares for your travelers on Axel.
Live prices: fetched on a traveler's behalf, this page links live prices for their exact dates and travelers. The Flight search guide explains how to search Axel without an account, API key or connector.