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The cheapest flights to Seattle - Tacoma Intl. found within the past 7 days were $160 round trip and $84 one way. Prices and availability subject to change. Additional terms may apply.
| Carrier | Flight | Depart ONT | Arrive SEA | Fri 8/12 | Sat 8/13 | Sun 8/14 | Mon 8/15 | Tue 8/16 | Wed 8/17 | Thu 8/18 | Stops | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| AS617 | 06:00 am | 08:43 am | Check Fare | Check Fare | Check Fare | Check Fare | Check Fare | Check Fare | Check Fare | 0 Stops | |
| DL3909 | 06:13 am | 08:55 am | Check Fare | Check Fare | Check Fare | Check Fare | Check Fare | Check Fare | Check Fare | 0 Stops | |
| AS615 | 10:00 am | 00:35 pm | Check Fare | Check Fare | Check Fare | Check Fare | Check Fare | Check Fare | Check Fare | 0 Stops | |
| DL3659 | 00:06 pm | 02:45 pm | Check Fare | Check Fare | Check Fare | Check Fare | Check Fare | Check Fare | Check Fare | 0 Stops | |
| DL3680 | 05:38 pm | 08:20 pm | Check Fare | Check Fare | Check Fare | Check Fare | Check Fare | Check Fare | Check Fare | 0 Stops | |
| AS423 | 05:54 pm | 08:32 pm | Check Fare | Check Fare | Check Fare | Check Fare | Check Fare | Check Fare | Check Fare | 0 Stops | |
| Traveling From | Los Angeles - Ontario Intl. |
|---|---|
| Traveling To | Seattle - Tacoma Intl. |
| Shortest Flight Time | 2 hours 35 mins |
| Earliest Departure Time | 6:00AM PDT |
| Latest Departure Time | 7:55PM PDT |
| Lowest Flight Price | $160 |
Flight path for flights from LA/Ontario International Airport to Seattle-Tacoma International Airport.
With 19 airlines to choose from on Travelocity, you can easily find the best option for you. Use our filters to sort by price, compare airlines, and find the most convenient flight times.
Airfares to Seattle SEA from Ontario ONT currently cost between $160 and $193. It’s usually cheaper to book a round trip than two separate one-way flights. Prices and availability subject to change. Additional terms may apply.
If you want to be flexible about when you return, or keep your travel options open ended, a one-way flight could be just the ticket! You’ll find one-way airfares from Ontario ONT to Seattle SEA on Travelocity starting at $84. Prices and availability subject to change. Additional terms may apply.
Get to Seattle faster, without the hassle of changing planes and moving baggage, by booking a direct flight. Expect your direct flight to SEA from ONT to take around 2 hour(s) 35 min(s).
Find cheap flight deals by using our search filters to sort results starting with the lowest price airfares to SEA from ONT. Our Price Match Promise means if you find a lower rate on Travelocity.com or on another US-based website within 24 hours of booking, we’ll credit or refund the difference.
If you’re flexible about when you travel, September is usually the cheapest month to fly from Ontario ONT to Seattle SEA. If you need to be more specific, search by date and arrival and departure times.Then, compare prices across different airlines, and sort results by lowest price first.
Some airlines let you change your travel dates without charging a fee. Use our ‘no change fee’ filter to see which flights to SEA from ONT have this option.
We’ve secured fantastic deals with all the main airline carriers and it’s easy to compare, choose, and book with Travelocity. With 24/7 customer service and our free 'App', we’ll always keep you moving.
Travelers at ONT love to visit these top cities. Roam to the top destinations from Ontario (ONT) today with the cheap prices from Travelocity!
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