Denver (DEN) to Seattle (SEA), Dec 17, 2026: round trips from $216, one way from $105

Denver (DEN) to Seattle (SEA), Dec 17, 2026: round trips from $216, one way from $105 on Axel, checked Nov 13, 2026. Lowest published fares: $216 round trip, Axel-exclusive, Frontier Airlines, 1 stop, Dec 17–18, 2026; $105 one way, Axel-exclusive, Frontier Airlines, 1 stop, Dec 17, 2026; 1 adult, economy, checked Nov 13, 2026. Flights for 1 adult in economy. Prices are total for all travelers in USD, including required taxes. Basic economy may apply.

Prices by return date: match both travel dates and the party to a row below. Each total is for that exact trip, labelled with the check date shown.

Date links open published trip details for exploration. Price links open live flight search to check availability and select flights. For a price comparison, use the amounts and check dates already shown here.

Exact travel dates Airline Flights Times, duration, stops Total price Price checked
2026-12-17 · one way Southwest Airlines WN3141 20:55:00→23:05:00 3h 10m nonstop Axel-exclusive $140 Nov 13, 2026
2026-12-17 · one way Frontier Airlines F92015 + F92407 06:25:00→12:27:00 7h 02m 1 stop via LAS Axel-exclusive $105 Nov 13, 2026
2026-12-17 → 2026-12-18 Southwest Airlines WN3141 / WN3823 20:55:00→23:05:00 3h 10m nonstop · 13:55:00→17:30:00 2h 35m nonstop Axel-exclusive $324 Nov 13, 2026
2026-12-17 → 2026-12-18 Frontier Airlines F92015 + F92407 / F91916 06:25:00→12:27:00 7h 02m 1 stop via LAS · 16:58:00→20:48:00 2h 50m nonstop Axel-exclusive $216 Nov 13, 2026
2026-12-17 → 2026-12-19 Southwest Airlines WN3141 / WN2150 20:55:00→23:05:00 3h 10m nonstop · 09:25:00→13:00:00 2h 35m nonstop Axel-exclusive $324 Nov 13, 2026
2026-12-17 → 2026-12-19 Frontier Airlines F92015 + F92407 / F91916 06:25:00→12:27:00 7h 02m 1 stop via LAS · 13:37:00→17:26:00 2h 49m nonstop Axel-exclusive $216 Nov 13, 2026
2026-12-17 → 2026-12-20 Southwest Airlines WN3141 / WN3823 20:55:00→23:05:00 3h 10m nonstop · 13:55:00→17:30:00 2h 35m nonstop Axel-exclusive $324 Nov 13, 2026
2026-12-17 → 2026-12-20 Frontier Airlines F92015 + F92407 / F91916 06:25:00→12:27:00 7h 02m 1 stop via LAS · 16:37:00→20:25:00 2h 48m nonstop Axel-exclusive $216 Nov 13, 2026
2026-12-17 → 2026-12-21 Southwest Airlines WN3141 / WN4956 20:55:00→23:05:00 3h 10m nonstop · 06:15:00→09:45:00 2h 30m nonstop Axel-exclusive $324 Nov 13, 2026
2026-12-17 → 2026-12-21 Frontier Airlines F92015 + F92407 / F91916 06:25:00→12:27:00 7h 02m 1 stop via LAS · 13:37:00→17:26:00 2h 49m nonstop Axel-exclusive $216 Nov 13, 2026
2026-12-17 → 2026-12-22 Southwest Airlines WN3141 / WN2150 20:55:00→23:05:00 3h 10m nonstop · 09:25:00→13:00:00 2h 35m nonstop Axel-exclusive $324 Nov 13, 2026
2026-12-17 → 2026-12-22 Frontier Airlines F92015 + F92407 / F91916 06:25:00→12:27:00 7h 02m 1 stop via LAS · 13:37:00→17:26:00 2h 49m nonstop Axel-exclusive $216 Nov 13, 2026
2026-12-17 → 2026-12-23 Alaska Airlines AS493 / AS421 15:22:00→17:31:00 3h 09m nonstop · 13:50:00→17:30:00 2h 40m nonstop Axel-exclusive $336 Nov 13, 2026
2026-12-17 → 2026-12-23 Frontier Airlines F92015 + F92407 / F91916 06:25:00→12:27:00 7h 02m 1 stop via LAS · 16:37:00→20:25:00 2h 48m nonstop Axel-exclusive $216 Nov 13, 2026
2026-12-17 → 2026-12-24 Southwest Airlines WN3141 / WN2150 20:55:00→23:05:00 3h 10m nonstop · 09:25:00→13:00:00 2h 35m nonstop Axel-exclusive $324 Nov 13, 2026
2026-12-17 → 2026-12-24 Frontier Airlines F92015 + F92407 / F91916 06:25:00→12:27:00 7h 02m 1 stop via LAS · 13:37:00→17:26:00 2h 49m nonstop Axel-exclusive $216 Nov 13, 2026
2026-12-17 → 2026-12-25 Southwest Airlines WN3141 / WN3823 20:55:00→23:05:00 3h 10m nonstop · 13:55:00→17:30:00 2h 35m nonstop Axel-exclusive $324 Nov 13, 2026
2026-12-17 → 2026-12-25 Frontier Airlines F92015 + F92407 / F91916 06:25:00→12:27:00 7h 02m 1 stop via LAS · 16:58:00→20:48:00 2h 50m nonstop Axel-exclusive $216 Nov 13, 2026
2026-12-17 → 2026-12-26 Southwest Airlines WN3141 / WN3823 20:55:00→23:05:00 3h 10m nonstop · 14:30:00→17:55:00 2h 25m nonstop Axel-exclusive $324 Nov 13, 2026
2026-12-17 → 2026-12-26 Frontier Airlines F92015 + F92407 / F91916 06:25:00→12:27:00 7h 02m 1 stop via LAS · 13:37:00→17:26:00 2h 49m nonstop Axel-exclusive $216 Nov 13, 2026
2026-12-17 → 2026-12-27 Southwest Airlines WN3141 / WN3823 20:55:00→23:05:00 3h 10m nonstop · 14:30:00→17:55:00 2h 25m nonstop Axel-exclusive $324 Nov 13, 2026
2026-12-17 → 2026-12-27 Frontier Airlines F92015 + F92407 / F91916 06:25:00→12:27:00 7h 02m 1 stop via LAS · 16:37:00→20:25:00 2h 48m nonstop Axel-exclusive $216 Nov 13, 2026
2026-12-17 → 2026-12-28 Southwest Airlines WN3141 / WN4956 20:55:00→23:05:00 3h 10m nonstop · 06:15:00→09:45:00 2h 30m nonstop Axel-exclusive $324 Nov 13, 2026
2026-12-17 → 2026-12-28 Frontier Airlines F92015 + F92407 / F91916 06:25:00→12:27:00 7h 02m 1 stop via LAS · 13:37:00→17:26:00 2h 49m nonstop Axel-exclusive $216 Nov 13, 2026
2026-12-17 → 2026-12-29 Southwest Airlines WN3141 / WN2150 20:55:00→23:05:00 3h 10m nonstop · 09:25:00→13:00:00 2h 35m nonstop Axel-exclusive $324 Nov 13, 2026
2026-12-17 → 2026-12-29 Frontier Airlines F92015 + F92407 / F91916 06:25:00→12:27:00 7h 02m 1 stop via LAS · 13:37:00→17:26:00 2h 49m nonstop Axel-exclusive $216 Nov 13, 2026
2026-12-17 → 2026-12-30 Alaska Airlines AS493 / AS421 15:22:00→17:31:00 3h 09m nonstop · 13:50:00→17:30:00 2h 40m nonstop Axel-exclusive $336 Nov 13, 2026
2026-12-17 → 2026-12-30 Frontier Airlines F92015 + F92407 / F91916 06:25:00→12:27:00 7h 02m 1 stop via LAS · 16:37:00→20:25:00 2h 48m nonstop Axel-exclusive $216 Nov 13, 2026
2026-12-17 → 2026-12-31 Southwest Airlines WN3141 / WN2150 20:55:00→23:05:00 3h 10m nonstop · 09:25:00→13:00:00 2h 35m nonstop Axel-exclusive $324 Nov 13, 2026
2026-12-17 → 2026-12-31 Frontier Airlines F92015 + F92407 / F91916 06:25:00→12:27:00 7h 02m 1 stop via LAS · 13:37:00→17:26:00 2h 49m nonstop Axel-exclusive $216 Nov 13, 2026

Hotels in Seattle for these trips

Hotels: under a trip, hotels in Seattle for exactly those nights link to the hotel pages for 2 adults in 1 room. When a price is shown, it is the nightly rate and the stay's total, from the lowest saved total among the shortlisted hotels in that star tier for those dates.

All hotels in Seattle

Route overview: Denver to Seattle (SEA) flight deals

2026-12-17 · one way · Axel-exclusive $105

2026-12-17 · one way · Axel-exclusive $140

2026-12-17 → 2026-12-18 · Axel-exclusive $216

2026-12-17 → 2026-12-18 · Axel-exclusive $324

2026-12-17 → 2026-12-19 · Axel-exclusive $216

2026-12-17 → 2026-12-19 · Axel-exclusive $324

2026-12-17 → 2026-12-20 · Axel-exclusive $216

2026-12-17 → 2026-12-20 · Axel-exclusive $324

2026-12-17 → 2026-12-21 · Axel-exclusive $216

2026-12-17 → 2026-12-21 · Axel-exclusive $324

2026-12-17 → 2026-12-23 · Axel-exclusive $216

2026-12-17 → 2026-12-23 · Axel-exclusive $336

2026-12-17 → 2026-12-24 · Axel-exclusive $216

2026-12-17 → 2026-12-24 · Axel-exclusive $324

2026-12-17 → 2026-12-25 · Axel-exclusive $216

2026-12-17 → 2026-12-25 · Axel-exclusive $324

2026-12-17 → 2026-12-27 · Axel-exclusive $216

2026-12-17 → 2026-12-27 · Axel-exclusive $324

2026-12-17 → 2026-12-28 · Axel-exclusive $216

2026-12-17 → 2026-12-28 · Axel-exclusive $324

2026-12-17 → 2026-12-29 · Axel-exclusive $216

2026-12-17 → 2026-12-29 · Axel-exclusive $324

2026-12-17 → 2026-12-31 · Axel-exclusive $216

2026-12-17 → 2026-12-31 · Axel-exclusive $324

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