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$69 Cheap Alaska Airlines flights from Ontario to Seattle (ONT to SEA)
Find The Best Day To Fly from Ontario to Seattle
Amazing Alaska Airlines ONT to SEA Flight Deals
The cheapest flights to Seattle - Tacoma Intl. found within the past 7 days were $98 round trip and $69 one way. Prices and availability subject to change. Additional terms may apply.
Frequently asked questions
Discover our best Alaska Airlines flight from Ontario ONT to Seattle SEA
To find the best deals on flights to Ontario from Seattle with Alaska Airlines, just enter your travel dates, filter by Alaska Airlines, and hit search. You’ll find 4 flights to choose from and can sort by price, flight duration, and arrival or departure time.
Return flights from Ontario ONT to Seattle SEA with Alaska Airlines
If you’re planning a round trip, booking return flights with Alaska Airlines is usually the most cost-effective option. With airfares ranging from $98 to $190, it’s easy to find a flight that suits your budget. Prices and availability subject to change. Additional terms may apply.
Book one-way Alaska Airlines flights from Ontario ONT to Seattle SEA
A one-way ticket gives you much greater flexibility—allowing you to choose your return date, destination, and time whenever you’re ready. By booking in advance you can find great deals on one-way tickets too. Right now, a one-way Alaska Airlines flight from Ontario to Seattle costs from $69. Prices and availability subject to change. Additional terms may apply.
The easy way to find cheap flights to Seattle SEA from Ontario ONT with Alaska Airlines
To find a cheap Alaska Airlines flight from Ontario ONT to Seattle SEA, sort your search results by price or filter by budget. Thanks to Travelocity’s Price Match Promise, if you find a better airfare deal anywhere else within 24 hours, we’ll credit or refund the difference.
How to find our best airfare deals on Alaska Airlines flights from Ontario ONT to Seattle SEA
If you’re looking for cheap flights, it helps to be flexible when it comes to your travel dates. You’ll usually find lower cost tickets when you travel during quieter months such as September, or if you book a flight with a stopover.
Find nonstop flights from Ontario ONT to Seattle SEA with Alaska Airlines
If you’re keen to be on Seattle soil fast, don’t waste time with a stopover—filter your search results to show direct Alaska Airlines flights only. The journey takes around 2 hour(s) 35 min(s) – so you’ll be there before you know it.
Flexible airline tickets for Alaska Airlines flights from Ontario ONT to Seattle SEA
Make sure you’re not out of pocket if plans change by choosing a flexible ticket with penalty-free amendment and cancellation options. Use our ‘no change fee’ filter to see which flights have this option.
There are a lot of reasons to book your flights to Seattle SEA from Ontario ONT with Alaska Airlines on Travelocity
At Travelocity our vast and up-to-the-minute inventory puts all of our best flight deals in one place. So, whether you’re traveling on business or jetting off with friends and family, you can trust Travelocity to get you there.
Airport code | Country | Airport name | Number of flights |
---|---|---|---|
SEA | USA | Seattle - Tacoma Intl. | 115 |
ORD | USA | O'Hare Intl. | 44 |
LAX | USA | Los Angeles Intl. | 24 |
PDX | USA | Portland Intl. | 23 |
ANC | USA | Ted Stevens Anchorage Intl. | 22 |
SFO | USA | San Francisco Intl. | 21 |
SAN | USA | San Diego Intl. | 18 |
JNU | USA | Juneau Intl. | 10 |
SJC | USA | Norman Y. Mineta San Jose Intl. | 10 |
GEG | USA | Spokane Intl. | 7 |
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Popular Alaska Airlines Flight Routes from ONT
Top Alaska Airlines Flight Routes from SEA
- Alaska Airlines SEA to BWI
- Alaska Airlines SEA to SFO
- Alaska Airlines SEA to MCO
- Alaska Airlines SEA to PHX
- Alaska Airlines SEA to IAD
- Alaska Airlines SEA to JFK
- Alaska Airlines SEA to DFW
- Alaska Airlines SEA to HNL
- Alaska Airlines SEA to SAN
- Alaska Airlines SEA to LGA
- Alaska Airlines SEA to LAS
- Alaska Airlines SEA to DEN
Top Flights for Alaska Airlines originating from ONT
Domestic
- Los Angeles to Newark (LAX - EWR)
- San Francisco to Newark (SFO - EWR)
- New York to San Francisco (JFK - SFO)
- Newark to Los Angeles (EWR - LAX)
- San Francisco to New York (SFO - JFK)
- New York to London (JFK - LHR)
- Los Angeles to Chicago (LAX - ORD)
- Newark to Orlando (EWR - MCO)
- Newark to Los Angeles (EWR - LAX)
- New York to Las Vegas (JFK - LAS)
International
- San Francisco to Tokyo (SFO - HND)
- Los Angeles to London (LAX - LHR)
- New York to San Francisco (JFK - SFO)
- New York to London (JFK - LHR)
- San Francisco to New York (SFO - JFK)
- Chicago to Los Angeles (ORD - LAX)
- Los Angeles to Tokyo (LAX - HND)
- Los Angeles to Tokyo (LAX - HND)
- Los Angeles to Chicago (LAX - ORD)
- New York to London (JFK - LHR)