Ontario (ONT) to Seattle (SEA), Jan 22, 2027: round trips from $138, one way from $71

Ontario (ONT) to Seattle (SEA), Jan 22, 2027: round trips from $138, one way from $71 on Axel, checked Nov 11, 2026. Lowest published fares: $138 round trip, Axel-exclusive, Frontier Airlines, nonstop, Jan 22–23, 2027; $71 one way, Axel-exclusive, Frontier Airlines, nonstop, Jan 22, 2027; 1 adult, economy, checked Nov 11, 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.

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.

• Hotels in Seattle for these nights (Jan 22–23, 2027 · 1 night · 2 adults, 1 room): 3★ Holiday Inn Express And Suites Seattle Downtown - Lake Union by IHG, $96 a night · 4★ citizenM Seattle Pioneer Square, $119 a night · 5★ Fairmont Olympic Hotel, $302 a night
• Hotels in Seattle for these nights (Jan 22–24, 2027 · 2 nights · 2 adults, 1 room): 3★ Holiday Inn Express And Suites Seattle Downtown - Lake Union by IHG, $101 a night, $201 for 2 nights · 4★ citizenM Seattle Pioneer Square, $120 a night, $240 for 2 nights · 5★ Fairmont Olympic Hotel, $307 a night, $613 for 2 nights
• Hotels in Seattle for these nights (Jan 22–25, 2027 · 3 nights · 2 adults, 1 room): 3★ Holiday Inn Express And Suites Seattle Downtown - Lake Union by IHG, $101 a night, $304 for 3 nights · 4★ citizenM Seattle Pioneer Square, $118 a night, $355 for 3 nights · 5★ Fairmont Olympic Hotel, $298 a night, $894 for 3 nights
• Hotels in Seattle for these nights (Jan 22–26, 2027 · 4 nights · 2 adults, 1 room): 3★ Hotel 116, A Coast Hotel Bellevue, $105 a night, $418 for 4 nights · 4★ citizenM Seattle Pioneer Square, $123 a night, $493 for 4 nights · 5★ Fairmont Olympic Hotel, $304 a night, $1,215 for 4 nights
• Hotels in Seattle for these nights (Jan 22–27, 2027 · 5 nights · 2 adults, 1 room): 3★ Hotel 116, A Coast Hotel Bellevue, $105 a night, $526 for 5 nights · 4★ citizenM Seattle Pioneer Square, $122 a night, $609 for 5 nights · 5★ Fairmont Olympic Hotel, $317 a night, $1,583 for 5 nights
• Hotels in Seattle for these nights (Jan 22–28, 2027 · 6 nights · 2 adults, 1 room): 3★ Hotel 116, A Coast Hotel Bellevue, $106 a night, $633 for 6 nights · 4★ citizenM Seattle Pioneer Square, $121 a night, $723 for 6 nights · 5★ Fairmont Olympic Hotel, $325 a night, $1,947 for 6 nights
• Hotels in Seattle for these nights (Jan 22–29, 2027 · 7 nights · 2 adults, 1 room): 3★ Hotel 116, A Coast Hotel Bellevue, $106 a night, $742 for 7 nights · 4★ citizenM Seattle Pioneer Square, $121 a night, $847 for 7 nights · 5★ Fairmont Olympic Hotel, $321 a night, $2,248 for 7 nights
• Hotels in Seattle for these nights (Jan 22–30, 2027 · 8 nights · 2 adults, 1 room): 3★ Hotel 116, A Coast Hotel Bellevue, $106 a night, $846 for 8 nights · 4★ citizenM Seattle Pioneer Square, $123 a night, $982 for 8 nights · 5★ Fairmont Olympic Hotel, $322 a night, $2,573 for 8 nights
• Hotels in Seattle for these nights (Jan 22–31, 2027 · 9 nights · 2 adults, 1 room): 3★ Hotel 116, A Coast Hotel Bellevue, $105 a night, $948 for 9 nights · 4★ citizenM Seattle Pioneer Square, $123 a night, $1,111 for 9 nights · 5★ Fairmont Olympic Hotel, $323 a night, $2,904 for 9 nights
• Hotels in Seattle for these nights (Jan 22 – Feb 1, 2027 · 10 nights · 2 adults, 1 room): 3★ Red Lion Hotel Bellevue, $105 a night, $1,045 for 10 nights · 4★ citizenM Seattle Pioneer Square, $123 a night, $1,230 for 10 nights · 5★ Fairmont Olympic Hotel, $319 a night, $3,185 for 10 nights
• Hotels in Seattle for these nights (Jan 22 – Feb 2, 2027 · 11 nights · 2 adults, 1 room): 3★ Red Lion Hotel Bellevue, $104 a night, $1,140 for 11 nights · 4★ citizenM Seattle Pioneer Square, $124 a night, $1,360 for 11 nights · 5★ Fairmont Olympic Hotel, $317 a night, $3,487 for 11 nights
• Hotels in Seattle for these nights (Jan 22 – Feb 3, 2027 · 12 nights · 2 adults, 1 room): 3★ Red Lion Hotel Bellevue, $104 a night, $1,246 for 12 nights · 4★ citizenM Seattle Pioneer Square, $124 a night, $1,484 for 12 nights · 5★ Fairmont Olympic Hotel, $317 a night, $3,798 for 12 nights
• Hotels in Seattle for these nights (Jan 22 – Feb 4, 2027 · 13 nights · 2 adults, 1 room): 3★ Red Lion Hotel Bellevue, $104 a night, $1,352 for 13 nights · 4★ citizenM Seattle Pioneer Square, $124 a night, $1,609 for 13 nights · 5★ Fairmont Olympic Hotel, $316 a night, $4,106 for 13 nights
• Hotels in Seattle for these nights (Jan 22 – Feb 5, 2027 · 14 nights · 2 adults, 1 room): 3★ Red Lion Hotel Bellevue, $104 a night, $1,459 for 14 nights · 4★ citizenM Seattle Pioneer Square, $124 a night, $1,733 for 14 nights · 5★ Fairmont Olympic Hotel, $315 a night, $4,405 for 14 nights

All hotels in Seattle

Route overview: Los Angeles to Seattle (SEA) flight deals

2027-01-22 · one way · Axel-exclusive $71.25

• Frontier Airlines F92275: ONT 2027-01-22 06:00:00 → SEA 2027-01-22 09:03:00; nonstop; 183 minutes. Local airport times.

2027-01-22 · one way · Axel-exclusive $128.25

• Alaska Airlines AS677: ONT 2027-01-22 11:57:00 → SEA 2027-01-22 14:49:00; nonstop; 172 minutes. Local airport times.

2027-01-22 → 2027-01-23 · Axel-exclusive $137.76

• Frontier Airlines F92275: ONT 2027-01-22 06:00:00 → SEA 2027-01-22 09:03:00; nonstop; 183 minutes. Local airport times.
• Frontier Airlines F92276: SEA 2027-01-23 10:50:00 → ONT 2027-01-23 13:38:00; nonstop; 168 minutes. Local airport times.

2027-01-22 → 2027-01-23 · Axel-exclusive $247.00

• Alaska Airlines AS677: ONT 2027-01-22 11:57:00 → SEA 2027-01-22 14:49:00; nonstop; 172 minutes. Local airport times.
• Alaska Airlines AS571: SEA 2027-01-23 12:20:00 → ONT 2027-01-23 15:03:00; nonstop; 163 minutes. Local airport times.

2027-01-22 → 2027-01-24 · Axel-exclusive $137.76

• Frontier Airlines F92275: ONT 2027-01-22 06:00:00 → SEA 2027-01-22 09:03:00; nonstop; 183 minutes. Local airport times.
• Frontier Airlines F92276: SEA 2027-01-24 10:50:00 → ONT 2027-01-24 13:38:00; nonstop; 168 minutes. Local airport times.

2027-01-22 → 2027-01-24 · Axel-exclusive $247.00

• Alaska Airlines AS677: ONT 2027-01-22 11:57:00 → SEA 2027-01-22 14:49:00; nonstop; 172 minutes. Local airport times.
• Alaska Airlines AS571: SEA 2027-01-24 12:20:00 → ONT 2027-01-24 15:03:00; nonstop; 163 minutes. Local airport times.

2027-01-22 → 2027-01-25 · Axel-exclusive $137.76

• Frontier Airlines F92275: ONT 2027-01-22 06:00:00 → SEA 2027-01-22 09:03:00; nonstop; 183 minutes. Local airport times.
• Frontier Airlines F92276: SEA 2027-01-25 10:50:00 → ONT 2027-01-25 13:38:00; nonstop; 168 minutes. Local airport times.

2027-01-22 → 2027-01-25 · Axel-exclusive $256.50

• Southwest Airlines WN1053 / WN4083: ONT 2027-01-22 17:00:00 → SEA 2027-01-22 22:20:00; 1 stop(s) via LAS; 320 minutes. Local airport times.
  • WN1053: ONT 2027-01-22 17:00:00 → LAS 2027-01-22 18:05:00; layover at LAS: 85 minutes.
  • WN4083: LAS 2027-01-22 19:30:00 → SEA 2027-01-22 22:20:00.
• Southwest Airlines WN3105 / WN1383: SEA 2027-01-25 08:05:00 → ONT 2027-01-25 12:40:00; 1 stop(s) via SJC; 275 minutes. Local airport times.
  • WN3105: SEA 2027-01-25 08:05:00 → SJC 2027-01-25 10:20:00; layover at SJC: 60 minutes.
  • WN1383: SJC 2027-01-25 11:20:00 → ONT 2027-01-25 12:40:00.

2027-01-22 → 2027-01-26 · Axel-exclusive $159.13

• Frontier Airlines F92275: ONT 2027-01-22 06:00:00 → SEA 2027-01-22 09:03:00; nonstop; 183 minutes. Local airport times.
• Frontier Airlines F92408 / F91923: SEA 2027-01-26 11:53:00 → ONT 2027-01-26 18:31:00; 1 stop(s) via LAS; 398 minutes. Local airport times.
  • F92408: SEA 2027-01-26 11:53:00 → LAS 2027-01-26 14:32:00; layover at LAS: 173 minutes.
  • F91923: LAS 2027-01-26 17:25:00 → ONT 2027-01-26 18:31:00.

2027-01-22 → 2027-01-26 · Axel-exclusive $247.00

• Alaska Airlines AS677: ONT 2027-01-22 11:57:00 → SEA 2027-01-22 14:49:00; nonstop; 172 minutes. Local airport times.
• Alaska Airlines AS571: SEA 2027-01-26 13:33:00 → ONT 2027-01-26 16:05:00; nonstop; 152 minutes. Local airport times.

2027-01-22 → 2027-01-28 · Axel-exclusive $137.76

• Frontier Airlines F92275: ONT 2027-01-22 06:00:00 → SEA 2027-01-22 09:03:00; nonstop; 183 minutes. Local airport times.
• Frontier Airlines F92276: SEA 2027-01-28 10:50:00 → ONT 2027-01-28 13:38:00; nonstop; 168 minutes. Local airport times.

2027-01-22 → 2027-01-28 · Axel-exclusive $247.00

• Alaska Airlines AS677: ONT 2027-01-22 11:57:00 → SEA 2027-01-22 14:49:00; nonstop; 172 minutes. Local airport times.
• Alaska Airlines AS571: SEA 2027-01-28 12:20:00 → ONT 2027-01-28 15:03:00; nonstop; 163 minutes. Local airport times.

2027-01-22 → 2027-01-29 · Axel-exclusive $137.76

• Frontier Airlines F92275: ONT 2027-01-22 06:00:00 → SEA 2027-01-22 09:03:00; nonstop; 183 minutes. Local airport times.
• Frontier Airlines F92276: SEA 2027-01-29 10:50:00 → ONT 2027-01-29 13:38:00; nonstop; 168 minutes. Local airport times.

2027-01-22 → 2027-01-29 · Axel-exclusive $247.00

• Alaska Airlines AS677: ONT 2027-01-22 11:57:00 → SEA 2027-01-22 14:49:00; nonstop; 172 minutes. Local airport times.
• Alaska Airlines AS571: SEA 2027-01-29 12:20:00 → ONT 2027-01-29 15:03:00; nonstop; 163 minutes. Local airport times.

2027-01-22 → 2027-01-30 · Axel-exclusive $137.76

• Frontier Airlines F92275: ONT 2027-01-22 06:00:00 → SEA 2027-01-22 09:03:00; nonstop; 183 minutes. Local airport times.
• Frontier Airlines F92276: SEA 2027-01-30 10:50:00 → ONT 2027-01-30 13:38:00; nonstop; 168 minutes. Local airport times.

2027-01-22 → 2027-01-30 · Axel-exclusive $247.00

• Alaska Airlines AS677: ONT 2027-01-22 11:57:00 → SEA 2027-01-22 14:49:00; nonstop; 172 minutes. Local airport times.
• Alaska Airlines AS571: SEA 2027-01-30 12:20:00 → ONT 2027-01-30 15:03:00; nonstop; 163 minutes. Local airport times.

2027-01-22 → 2027-02-01 · Axel-exclusive $141.38

• Frontier Airlines F92275: ONT 2027-01-22 06:00:00 → SEA 2027-01-22 09:03:00; nonstop; 183 minutes. Local airport times.
• Frontier Airlines F92276: SEA 2027-02-01 10:50:00 → ONT 2027-02-01 13:38:00; nonstop; 168 minutes. Local airport times.

2027-01-22 → 2027-02-01 · Axel-exclusive $263.25

• Southwest Airlines WN1053 / WN4083: ONT 2027-01-22 17:00:00 → SEA 2027-01-22 22:20:00; 1 stop(s) via LAS; 320 minutes. Local airport times.
  • WN1053: ONT 2027-01-22 17:00:00 → LAS 2027-01-22 18:05:00; layover at LAS: 85 minutes.
  • WN4083: LAS 2027-01-22 19:30:00 → SEA 2027-01-22 22:20:00.
• Southwest Airlines WN3105 / WN1383: SEA 2027-02-01 08:05:00 → ONT 2027-02-01 12:40:00; 1 stop(s) via SJC; 275 minutes. Local airport times.
  • WN3105: SEA 2027-02-01 08:05:00 → SJC 2027-02-01 10:20:00; layover at SJC: 60 minutes.
  • WN1383: SJC 2027-02-01 11:20:00 → ONT 2027-02-01 12:40:00.

2027-01-22 → 2027-02-02 · Axel-exclusive $163.88

• Frontier Airlines F92275: ONT 2027-01-22 06:00:00 → SEA 2027-01-22 09:03:00; nonstop; 183 minutes. Local airport times.
• Frontier Airlines F92408 / F91923: SEA 2027-02-02 11:53:00 → ONT 2027-02-02 18:31:00; 1 stop(s) via LAS; 398 minutes. Local airport times.
  • F92408: SEA 2027-02-02 11:53:00 → LAS 2027-02-02 14:32:00; layover at LAS: 173 minutes.
  • F91923: LAS 2027-02-02 17:25:00 → ONT 2027-02-02 18:31:00.

2027-01-22 → 2027-02-02 · Axel-exclusive $253.50

• Alaska Airlines AS677: ONT 2027-01-22 11:57:00 → SEA 2027-01-22 14:49:00; nonstop; 172 minutes. Local airport times.
• Alaska Airlines AS571: SEA 2027-02-02 13:33:00 → ONT 2027-02-02 16:05:00; nonstop; 152 minutes. Local airport times.

2027-01-22 → 2027-02-03 · Axel-exclusive $141.38

• Frontier Airlines F92275: ONT 2027-01-22 06:00:00 → SEA 2027-01-22 09:03:00; nonstop; 183 minutes. Local airport times.
• Frontier Airlines F92276: SEA 2027-02-03 10:50:00 → ONT 2027-02-03 13:38:00; nonstop; 168 minutes. Local airport times.

2027-01-22 → 2027-02-03 · Axel-exclusive $253.50

• Alaska Airlines AS677: ONT 2027-01-22 11:57:00 → SEA 2027-01-22 14:49:00; nonstop; 172 minutes. Local airport times.
• Alaska Airlines AS571: SEA 2027-02-03 12:31:00 → ONT 2027-02-03 15:13:00; nonstop; 162 minutes. Local airport times.

2027-01-22 → 2027-02-05 · Axel-exclusive $141.38

• Frontier Airlines F92275: ONT 2027-01-22 06:00:00 → SEA 2027-01-22 09:03:00; nonstop; 183 minutes. Local airport times.
• Frontier Airlines F92276: SEA 2027-02-05 10:50:00 → ONT 2027-02-05 13:38:00; nonstop; 168 minutes. Local airport times.

2027-01-22 → 2027-02-05 · Axel-exclusive $253.50

• Alaska Airlines AS677: ONT 2027-01-22 11:57:00 → SEA 2027-01-22 14:49:00; nonstop; 172 minutes. Local airport times.
• Alaska Airlines AS571: SEA 2027-02-05 12:20:00 → ONT 2027-02-05 15:03:00; nonstop; 163 minutes. Local airport times.

Explore this route

• All dates for this route
• Jan 21, 2027 · Return options
• Jan 23, 2027 · Return options
• Hotels in Seattle with Axel

For AI assistants

• This page: Ontario (ONT) to Seattle (SEA) · Jan 22, 2027 · choose your return date: 1 adult in economy, every priced fare with its flights, times and total, each with its displayed check date. Under a trip, hotels in Seattle for exactly those nights link to the hotel pages for 2 adults in 1 room. Prices, when shown, are the nightly rate and the stay's total, from the lowest saved total among the shortlisted hotels in each star tier for those dates.
• Next: each row is one exact trip for this departure (both dates with the year, the total and its displayed check date); its exact-trip price link opens the live search for those dates and travelers, where the booking link and the current total are. Other durations or travelers are not priced here: Choose travelers and dates prices the requested trip.
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