$78 Cheap Alaska Airlines flights Seattle (SEA) to Ontario (ONT)

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Today's featured flight deals from Seattle-Tacoma International Airport (SEA) to Los Angeles - Ontario Intl. Airport (ONT)

Nonstop
Carry-on included
Lower price than typical

$78 Cheap Alaska Airlines flights Seattle (SEA) to Ontario (ONT)

Prices were available within the past 7 days and start at $78 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Find the cheapest month to fly from Seattle (SEA) to Ontario (ONT)

October is typically the cheapest month to fly

From $79 - $160 per traveler.
Flights from Seattle (SEA) to Ontario (ONT)
Origin airport
Seattle - Tacoma Intl.
Destination airport
Los Angeles - Ontario Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Hawaiian Airlines, Southwest Airlines, United
Popular airline
Alaska Airlines
Distance
956 mi
Average flight time
2 hours 40 mins

Frequently asked questions

How much is an Alaska Airlines flight from Seattle - Tacoma Intl. Airport (SEA) to Los Angeles - Ontario Intl. Airport (ONT)?
Grab budget-friendly return Alaska Airlines flights from SEA to ONT by filtering your results from "Price (lowest to highest)" on Expedia. Or look for deals from $78 for a one-way trip.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
What is the cheapest month to fly from SEA to ONT with Alaska Airlines?
January is one of the most affordable months to jet off to Ontario with Alaska Airlines. You could also find great deals on one-way and return tickets in April.
What is the cheapest time to book flights from Seattle - Tacoma Intl. Airport (SEA) to Los Angeles - Ontario Intl. Airport (ONT) with Alaska Airlines?
For cheap Alaska Airlines fares from Seattle - Tacoma Intl. Airport (SEA) to Los Angeles - Ontario Intl. Airport (ONT), start searching one to three months before your intended departure. Securing domestic flights 34 to 86 days in advance could save you 25% compared to booking just 6 to 12 days ahead. The day you book can also impact how much you pay. Sunday is usually the most affordable, while Monday is often the most expensive for domestic flights. You can save 6% on average by booking on a Sunday.**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.
Does Alaska Airlines fly nonstop from Seattle - Tacoma Intl. Airport (SEA) to Los Angeles - Ontario Intl. Airport (ONT)?
You can easily fly from Seattle - Tacoma Intl. Airport (SEA) to Los Angeles - Ontario Intl. Airport (ONT) on any of Alaska Airlines's 22 weekly direct flights. Make use of our "Nonstop" and "Airline" filters to find the Alaska Airlines flight that'll get you to ONT at a time that suits you.
How long does it take to fly from SEA to ONT with Alaska Airlines?
Take off from Seattle - Tacoma Intl. Airport (SEA) for Los Angeles - Ontario Intl. Airport (ONT) on a nonstop Alaska Airlines flight, and you'll be in the skies for approximately 2h 34m.
Which day of the week has the most Alaska Airlines flights from Seattle - Tacoma Intl. Airport (SEA) to Los Angeles - Ontario Intl. Airport (ONT)?
Alaska Airlines operates the most flights from Seattle - Tacoma Intl. Airport (SEA) to Los Angeles - Ontario Intl. Airport (ONT) on Thursday. With up to 4 daily departures, you'll get the most options and flexibility on this day.
What is the earliest Alaska Airlines flight from SEA to ONT?
The earliest flight from SEA to ONT with Alaska Airlines leaves at 8:00AM UTC-8. You'll touch down at 10:38AM UTC-8. The last Alaska Airlines flight of the day leaves at 8:38PM UTC-8 and arrives at 11:12PM UTC-8. With around 20% fewer cancellations for departures before midday, beginning your travel day early is generally the best way to go.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports does Alaska Airlines fly into in Ontario?
Alaska Airlines flights from Seattle - Tacoma Intl. Airport (SEA) to Ontario land at Los Angeles - Ontario Intl. Airport (ONT), Los Angeles Intl. Airport (LAX) and John Wayne Airport (SNA). The main Ontario hub for this carrier is ONT. It's worth checking out flights arriving at other nearby airports on Expedia as you may find cheaper tickets.
Why fly with Alaska Airlines from SEA to ONT?
Alaska Airlines makes traveling from SEA to ONT enjoyable with a rewarding loyalty program and an excellent in-flight experience. You could even start earning points with Mileage Plan. Don't forget to join Expedia's free One Key™ rewards program to earn OneKeyCash™*, which can be redeemed on future bookings.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.
What type of plane does Alaska Airlines fly from Seattle - Tacoma Intl. Airport (SEA) to Los Angeles - Ontario Intl. Airport (ONT)?
For the Seattle - Tacoma Intl. Airport (SEA) to Los Angeles - Ontario Intl. Airport (ONT) route, Alaska Airlines typically uses Boeing 737-800 and Boeing 737 MAX 9 planes. Remember that last-minute changes are possible for operational demands, so your flight could be on a different aircraft.
Can I change or cancel my Alaska Airlines flight from Seattle - Tacoma Intl. Airport (SEA) to Los Angeles - Ontario Intl. Airport (ONT)?
Depending on the type of ticket you purchased, a fee will generally apply if you change or cancel your booking more than 24 hours after it's confirmed. To secure flexible plane tickets, select our "No cancel fee" or "Changes included" filter while looking for flights. For more details on changing or canceling your reservation, head to "Trips," select your flight and click on "Manage Booking."

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