Ontario (ONT) to Seattle (SEA), Jan 29, 2027 – Feb 4, 2027: from $237 round trip
Ontario (ONT) to Seattle (SEA), Jan 29, 2027 – Feb 4, 2027: from $237 round trip on Axel, checked Nov 12, 2026. Lowest published fare: $237 round trip, Axel-exclusive, Frontier Airlines, 1 stop, Jan 29, 2027 – Feb 4, 2027, 1 adult, economy, checked Nov 12, 2026. 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.
| Exact travel dates | Airline | Flights | Times, duration, stops | Total price | Offered on | Schedule |
|---|---|---|---|---|---|---|
| 2027-01-29 → 2027-02-04 | Alaska Airlines | AS571 / AS571 | 16:29:00→19:19:00 2h 50m nonstop · 12:59:00→15:33:00 2h 34m nonstop | Axel-exclusive $292.80 | Nov 12, 2026 | Seen on travel dates |
| 2027-01-29 → 2027-02-04 | Frontier Airlines | F92908 + F9605 / F92408 + F92231 | 11:42:00→15:14:00 27h 32m 1 stop via DEN · 18:33:00→07:07:00 12h 34m 1 stop via LAS | Axel-exclusive $237.34 | Nov 12, 2026 | Seen on travel dates |
| 2027-01-29 → 2027-02-04 | United Airlines | UA1665 + UA1896 / UA2416 + UA2850 | 18:37:00→23:15:00 4h 38m 1 stop via SFO · 13:18:00→17:35:00 4h 17m 1 stop via SFO | Axel-exclusive $824.80 | Nov 12, 2026 | Seen on travel dates |
| 2027-01-29 → 2027-02-04 | American Airlines | AA1889 + AA3902 / AA1577 + AA3016 | 09:28:00→14:52:00 5h 24m 1 stop via PHX · 06:00:00→12:39:00 6h 39m 1 stop via PHX | Axel-exclusive $824.80 | Nov 12, 2026 | Seen on travel dates |
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 29 – Feb 4, 2027 · 6 nights · 2 adults, 1 room): 3★ Red Lion Hotel Bellevue, $97 a night, $583 for 6 nights · 4★ citizenM Seattle Pioneer Square, $127 a night, $762 for 6 nights · 5★ Fairmont Olympic Hotel, $310 a night, $1,858 for 6 nights
Route overview: Los Angeles to Seattle (SEA) flight deals
2027-01-29 → 2027-02-04 · Axel-exclusive $292.80
- Alaska Airlines AS571: ONT 2027-01-29 16:29:00 → SEA 2027-01-29 19:19:00; nonstop; 170 minutes. Local airport times.
- Alaska Airlines AS571: SEA 2027-02-04 12:59:00 → ONT 2027-02-04 15:33:00; nonstop; 154 minutes. Local airport times.
2027-01-29 → 2027-02-04 · Axel-exclusive $237.34
- Frontier Airlines F92908 / F9605: ONT 2027-01-29 11:42:00 → SEA 2027-01-30 15:14:00; 1 stop(s) via DEN; 1652 minutes. Local airport times.
- F92908: ONT 2027-01-29 11:42:00 → DEN 2027-01-29 15:07:00; layover at DEN: 1316 minutes.
- F9605: DEN 2027-01-30 13:03:00 → SEA 2027-01-30 15:14:00.
- Frontier Airlines F92408 / F92231: SEA 2027-02-04 18:33:00 → ONT 2027-02-05 07:07:00; 1 stop(s) via LAS; 754 minutes. Local airport times.
- F92408: SEA 2027-02-04 18:33:00 → LAS 2027-02-04 21:13:00; layover at LAS: 528 minutes.
- F92231: LAS 2027-02-05 06:01:00 → ONT 2027-02-05 07:07:00.
2027-01-29 → 2027-02-04 · Axel-exclusive $824.80
- United Airlines UA1665 / UA1896: ONT 2027-01-29 18:37:00 → SEA 2027-01-29 23:15:00; 1 stop(s) via SFO; 278 minutes. Local airport times.
- UA1665: ONT 2027-01-29 18:37:00 → SFO 2027-01-29 20:10:00; layover at SFO: 55 minutes.
- UA1896: SFO 2027-01-29 21:05:00 → SEA 2027-01-29 23:15:00.
- United Airlines UA2416 / UA2850: SEA 2027-02-04 13:18:00 → ONT 2027-02-04 17:35:00; 1 stop(s) via SFO; 257 minutes. Local airport times.
- UA2416: SEA 2027-02-04 13:18:00 → SFO 2027-02-04 15:35:00; layover at SFO: 35 minutes.
- UA2850: SFO 2027-02-04 16:10:00 → ONT 2027-02-04 17:35:00.
2027-01-29 → 2027-02-04 · Axel-exclusive $824.80
- American Airlines AA1889 / AA3902: ONT 2027-01-29 09:28:00 → SEA 2027-01-29 14:52:00; 1 stop(s) via PHX; 324 minutes. Local airport times.
- AA1889: ONT 2027-01-29 09:28:00 → PHX 2027-01-29 11:54:00; layover at PHX: 38 minutes.
- AA3902: PHX 2027-01-29 12:32:00 → SEA 2027-01-29 14:52:00.
- American Airlines AA1577 / AA3016: SEA 2027-02-04 06:00:00 → ONT 2027-02-04 12:39:00; 1 stop(s) via PHX; 399 minutes. Local airport times.
- AA1577: SEA 2027-02-04 06:00:00 → PHX 2027-02-04 10:04:00; layover at PHX: 137 minutes.
- AA3016: PHX 2027-02-04 12:21:00 → ONT 2027-02-04 12:39:00.
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 28, 2027 · Return options
- Jan 30, 2027 · Return options
- Hotels in Seattle with Axel
For AI assistants
- This page: Ontario (ONT) to Seattle (SEA) · Jan 29, 2027 · return Feb 4, 2027: 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.
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