Ontario (ONT) to Seattle (SEA) · Jan 27, 2027 · return Feb 6, 2027

Flights for 1 adult in economy. Prices are total for all travelers in USD, including required taxes. Basic economy may apply.

See flights for these dates: each price link opens AI flight search for that row's exact dates and travelers. Select the complete itinerary there.

Hotels in Seattle for these trips

Hotels: under a trip, hotels in Seattle for exactly those nights: the lowest 3★, 4★, 5★ stay totals among the city's featured hotels, Axel's price for 2 adults in 1 room, each opening that hotel's page for those dates with the rooms and the booking link.

• Hotels in Seattle for these nights (Jan 27 – Feb 6, 2027 · 10 nights · 2 adults, 1 room): 3★ Staypineapple, Hotel FIVE, Downtown Seattle, $1,184 total · 4★ Mayflower Park Hotel, $1,268 total · 5★ Fairmont Olympic Hotel, $2,594 total

All hotels in Seattle

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

2027-01-27 → 2027-02-06 · Axel-exclusive $141.38

• Frontier Airlines F92275: ONT 2027-01-27 06:00:00 → SEA 2027-01-27 09:03:00; nonstop; 183 minutes. Local airport times.
• Frontier Airlines F92276: SEA 2027-02-06 10:50:00 → ONT 2027-02-06 13:38:00; nonstop; 168 minutes. Local airport times.

2027-01-27 → 2027-02-06 · Axel-exclusive $253.50

• Alaska Airlines AS677: ONT 2027-01-27 11:57:00 → SEA 2027-01-27 14:49:00; nonstop; 172 minutes. Local airport times.
• Alaska Airlines AS571: SEA 2027-02-06 12:20:00 → ONT 2027-02-06 15:03:00; nonstop; 163 minutes. Local airport times.

2027-01-27 → 2027-02-06 · Axel-exclusive $263.25

• Delta Air Lines DL4031: ONT 2027-01-27 17:38:00 → SEA 2027-01-27 20:43:00; nonstop; 185 minutes. Local airport times.
• Delta Air Lines DL4031: SEA 2027-02-06 11:59:00 → ONT 2027-02-06 14:50:00; nonstop; 171 minutes. Local airport times.

2027-01-27 → 2027-02-06 · Axel-exclusive $263.25

• Southwest Airlines WN3326 / WN1586: ONT 2027-01-27 13:30:00 → SEA 2027-01-27 18:40:00; 1 stop(s) via SMF; 310 minutes. Local airport times.
  • WN3326: ONT 2027-01-27 13:30:00 → SMF 2027-01-27 14:55:00; layover at SMF: 105 minutes.
  • WN1586: SMF 2027-01-27 16:40:00 → SEA 2027-01-27 18:40:00.
• Southwest Airlines WN3105 / WN1383: SEA 2027-02-06 08:05:00 → ONT 2027-02-06 12:40:00; 1 stop(s) via SJC; 275 minutes. Local airport times.
  • WN3105: SEA 2027-02-06 08:05:00 → SJC 2027-02-06 10:20:00; layover at SJC: 60 minutes.
  • WN1383: SJC 2027-02-06 11:20:00 → ONT 2027-02-06 12:40:00.

2027-01-27 → 2027-02-06 · Axel-exclusive $282.75

• United Airlines UA2363 / UA2192: ONT 2027-01-27 06:00:00 → SEA 2027-01-27 12:18:00; 1 stop(s) via SFO; 378 minutes. Local airport times.
  • UA2363: ONT 2027-01-27 06:00:00 → SFO 2027-01-27 07:30:00; layover at SFO: 155 minutes.
  • UA2192: SFO 2027-01-27 10:05:00 → SEA 2027-01-27 12:18:00.
• United Airlines UA2478 / UA552: SEA 2027-02-06 15:24:00 → ONT 2027-02-06 22:53:00; 1 stop(s) via SFO; 449 minutes. Local airport times.
  • UA2478: SEA 2027-02-06 15:24:00 → SFO 2027-02-06 17:45:00; layover at SFO: 225 minutes.
  • UA552: SFO 2027-02-06 21:30:00 → ONT 2027-02-06 22:53:00.

2027-01-27 → 2027-02-06 · Axel-exclusive $253.50

• Alaska Airlines AS575: ONT 2027-01-27 12:02:00 → SEA 2027-01-27 14:49:00; nonstop; 167 minutes. Local airport times.
• Alaska Airlines AS571: SEA 2027-02-06 12:20:00 → ONT 2027-02-06 15:03:00; nonstop; 163 minutes. Local airport times.

2027-01-27 → 2027-02-06 · Axel-exclusive $263.25

• Delta Air Lines DL4070: ONT 2027-01-27 11:57:00 → SEA 2027-01-27 14:56:00; nonstop; 179 minutes. Local airport times.
• Delta Air Lines DL4031: SEA 2027-02-06 11:59:00 → ONT 2027-02-06 14:50:00; nonstop; 171 minutes. Local airport times.

2027-01-27 → 2027-02-06 · Axel-exclusive $263.00

• Alaska Airlines AS3380 / AS2016: ONT 2027-01-27 17:36:00 → SEA 2027-01-27 22:28:00; 1 stop(s) via BOI; 292 minutes. Local airport times.
  • AS3380: ONT 2027-01-27 17:36:00 → BOI 2027-01-27 20:41:00; layover at BOI: 66 minutes.
  • AS2016: BOI 2027-01-27 21:47:00 → SEA 2027-01-27 22:28:00.
• Alaska Airlines AS571: SEA 2027-02-06 12:20:00 → ONT 2027-02-06 15:03:00; nonstop; 163 minutes. Local airport times.

2027-01-27 → 2027-02-06 · Axel-exclusive $263.25

• Southwest Airlines WN1053 / WN4083: ONT 2027-01-27 17:00:00 → SEA 2027-01-27 22:20:00; 1 stop(s) via LAS; 320 minutes. Local airport times.
  • WN1053: ONT 2027-01-27 17:00:00 → LAS 2027-01-27 18:05:00; layover at LAS: 85 minutes.
  • WN4083: LAS 2027-01-27 19:30:00 → SEA 2027-01-27 22:20:00.
• Southwest Airlines WN3105 / WN1383: SEA 2027-02-06 08:05:00 → ONT 2027-02-06 12:40:00; 1 stop(s) via SJC; 275 minutes. Local airport times.
  • WN3105: SEA 2027-02-06 08:05:00 → SJC 2027-02-06 10:20:00; layover at SJC: 60 minutes.
  • WN1383: SJC 2027-02-06 11:20:00 → ONT 2027-02-06 12:40:00.

2027-01-27 → 2027-02-06 · Axel-exclusive $263.25

• Southwest Airlines WN3313 / WN4608: ONT 2027-01-27 16:05:00 → SEA 2027-01-27 21:40:00; 1 stop(s) via OAK; 335 minutes. Local airport times.
  • WN3313: ONT 2027-01-27 16:05:00 → OAK 2027-01-27 17:30:00; layover at OAK: 110 minutes.
  • WN4608: OAK 2027-01-27 19:20:00 → SEA 2027-01-27 21:40:00.
• Southwest Airlines WN3105 / WN1383: SEA 2027-02-06 08:05:00 → ONT 2027-02-06 12:40:00; 1 stop(s) via SJC; 275 minutes. Local airport times.
  • WN3105: SEA 2027-02-06 08:05:00 → SJC 2027-02-06 10:20:00; layover at SJC: 60 minutes.
  • WN1383: SJC 2027-02-06 11:20:00 → ONT 2027-02-06 12:40:00.

2027-01-27 → 2027-02-06 · Axel-exclusive $272.75

• Delta Air Lines DL2708 / DL2995: ONT 2027-01-27 06:00:00 → SEA 2027-01-27 12:36:00; 1 stop(s) via SLC; 396 minutes. Local airport times.
  • DL2708: ONT 2027-01-27 06:00:00 → SLC 2027-01-27 08:49:00; layover at SLC: 146 minutes.
  • DL2995: SLC 2027-01-27 11:15:00 → SEA 2027-01-27 12:36:00.
• Delta Air Lines DL4031: SEA 2027-02-06 11:59:00 → ONT 2027-02-06 14:50:00; nonstop; 171 minutes. Local airport times.

Travelers: prices on this page are totals for 1 adult. For a different party, open this trip for 2 adults · 3 adults · 4 adults · 2 adults + 1 child · 2 adults + 2 children; each link opens AI flight search for these dates and those travelers, and the customer link to share comes from those results.

Explore this route

• All dates for this route
• Jan 26, 2027 · Return options
• Jan 28, 2027 · Return options
• Hotels in Seattle with Axel

For AI assistants

• This page: Ontario (ONT) to Seattle (SEA) · Jan 27, 2027 · return Feb 6, 2027: 1 adult in economy, every priced fare with its flights, times and total, each with the time its price was issued. Under a trip, hotels in Seattle for exactly those nights: the lowest 3★, 4★ and 5★ stay totals for 2 adults in 1 room, each linking to that hotel's page for those dates.
• Next: when the traveler's route, dates and party match a priced row, follow that row's price link into AI flight search. Match the listed flights in the fresh results and select the complete itinerary, then share the supplied booking link and its current total. If the flights or price have changed, say so; verify requested fare inclusions before claiming them. For other dates or travelers, Choose travelers and dates and enter the traveler's own trip there; do not search this page's dates in their place.
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