¥11,950 Cheap Flights from Seattle (SEA) to Ontario (ONT)

Popular airlines from Seattle-Tacoma International Airport (SEA) to Los Angeles - Ontario Intl. Airport (ONT)

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Cheap Flights from Seattle to Ontario (SEA-ONT)

Prices were available within the past 7 days and start at ¥11,950 for one-way flights and ¥21,140 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Delta
Hawaiian Airlines
Delta
Hawaiian Airlines
Delta
Hawaiian Airlines
Delta
United
American Airlines

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

October is typically the cheapest month to fly

From ¥10,306 - ¥22,758 per traveler.

Frequently asked questions

How much is a flight from Sea-Tac Airport to Ontario Airport?
Within the past 7 days on Expedia, for flights departing within the next year, the lowest price available for a round-trip flight from Sea-Tac Airport to Los Angeles - Ontario Intl. Airport (ONT) was ¥21,140. Fares this cheap don't hang around forever, so make sure you book yours today. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Sea-Tac Airport to ONT?
Most flights can be canceled online, but every airline has its own terms and conditions. If you do need to cancel your flight, check out our Customer Service Portal and follow the instructions.
How do I find cheap flights from SEA to ONT that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for Sea-Tac Airport to Los Angeles - Ontario Intl. Airport (ONT) flights, you'll see a "no change fees" filter for you to select.
How many hours is the flight from SEA to Los Angeles - Ontario Intl. Airport (ONT)?
It only takes roughly 2 hours and 36 minutes to fly from SEA to ONT. Recline your seat and make yourself comfortable — but not too comfortable. You'll be landing before long.
How far is the flight from Sea-Tac Airport to Ontario Airport?
It's around 1,550 kilometers from Sea-Tac Airport to Ontario Airport, so expect to be strapped into your seat for a while. Keep yourself occupied by packing things like playing cards (if you're traveling with friends) or the latest bestseller.
Which airlines fly direct from Sea-Tac Airport to ONT?
Alaska Airlines (AS) is a top option. It offers 121 flights between Seattle - Tacoma Intl. Airport (SEA) and ONT each month. Another airline servicing this route is Delta Air Lines (DL). You'll have 91 flights every month to select from.
Are Sea-Tac Airport to Los Angeles - Ontario Intl. Airport (ONT) flight tickets cheaper when they're purchased at the last minute?
Flight prices always go up and down, so it's no sure thing. While last-minute deals between Seattle - Tacoma Intl. Airport (SEA) and ONT are of course possible, it also makes sense to monitor prices well before you fly. In fact, some air carriers publish their prices up to 12 months prior to the departure date. Expedia is continuously updating the biggest airfare bargains around, so check back often and be ready to secure your seat when fare prices drop.

Travel information

Travel information

Origin airport
Seattle - Tacoma Intl.
Destination airport
Los Angeles - Ontario Intl.
Airlines serving
American Airlines, Delta, Hawaiian Airlines, United
Roundtrip price
¥21,140
Distance
1530 km
Average flight time
2 hours 59 mins

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Ontario nearby Airports

Los Angeles

Orange County

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