Cheap Flights From Seattle - Tacoma Intl. (SEA) To Los Angeles - Ontario Intl. (ONT)

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Cheapest Flights from Seattle (SEA) to Ontario (ONT)

The cheapest flights to Los Angeles - Ontario Intl. found within the past 7 days were CA $138 round trip and CA $136 one way. Prices and availability subject to change. Additional terms may apply.

Thu, May 7 - Wed, May 13
SEA
Seattle
ONT
Ontario
CA $138 Roundtrip, found 5 days ago
CA $138
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Thu, May 7 from Seattle to Ontario, returning Wed, May 13, priced at CA $138 found 5 days ago
Sat, Mar 14 - Tue, Mar 17
SEA
Seattle
ONT
Ontario
CA $141 Roundtrip, found 5 days ago
CA $141
Roundtrip
found 5 days ago
Select Delta flight, departing Sat, Mar 14 from Seattle to Ontario, returning Tue, Mar 17, priced at CA $141 found 5 days ago
Thu, May 7 - Wed, May 13
SEA
Seattle
ONT
Ontario
CA $177 Roundtrip, found 5 days ago
CA $177
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Thu, May 7 from Seattle to Ontario, returning Wed, May 13, priced at CA $177 found 5 days ago
Sat, May 2 - Mon, May 4
SEA
Seattle
ONT
Ontario
CA $178 Roundtrip, found 5 days ago
CA $178
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Sat, May 2 from Seattle to Ontario, returning Mon, May 4, priced at CA $178 found 5 days ago
Thu, May 7 - Wed, May 13
SEA
Seattle
ONT
Ontario
CA $186 Roundtrip, found 5 days ago
CA $186
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Thu, May 7 from Seattle to Ontario, returning Wed, May 13, priced at CA $186 found 5 days ago
Tue, Mar 17 - Wed, Mar 18
SEA
Seattle
ONT
Ontario
CA $197 Roundtrip, found 5 days ago
CA $197
Roundtrip
found 5 days ago
Select Delta flight, departing Tue, Mar 17 from Seattle to Ontario, returning Wed, Mar 18, priced at CA $197 found 5 days ago
Sat, Apr 25 - Sat, May 2
SEA
Seattle
ONT
Ontario
CA $218 Roundtrip, found 11 hours ago
CA $218
Roundtrip
found 11 hours ago
Select Alaska Airlines flight, departing Sat, Apr 25 from Seattle to Ontario, returning Sat, May 2, priced at CA $218 found 11 hours ago
Sat, May 2 - Mon, May 4
SEA
Seattle
ONT
Ontario
CA $220 Roundtrip, found 5 days ago
CA $220
Roundtrip
found 5 days ago
Select Alaska Airlines flight, departing Sat, May 2 from Seattle to Ontario, returning Mon, May 4, priced at CA $220 found 5 days ago
Wed, Feb 25 - Sun, Mar 1
SEA
Seattle
ONT
Ontario
CA $222 Roundtrip, found 6 days ago
CA $222
Roundtrip
found 6 days ago
Select Alaska Airlines flight, departing Wed, Feb 25 from Seattle to Ontario, returning Sun, Mar 1, priced at CA $222 found 6 days ago
Sat, Feb 28 - Mon, Mar 2
SEA
Seattle
ONT
Ontario
CA $223 Roundtrip, found 4 days ago
CA $223
Roundtrip
found 4 days ago
Select Alaska Airlines flight, departing Sat, Feb 28 from Seattle to Ontario, returning Mon, Mar 2, priced at CA $223 found 4 days ago

Los Angeles - Ontario Intl. flight + hotel packages - economy flights

Price found within the past 48 hours. Click for updated prices.
Days Inn by Wyndham Banning Casino/Outlet Mall

Days Inn by Wyndham Banning Casino/Outlet Mall

2 out of 5
Price was CA $706, price is now CA $648 per person
CA $648
per person
Mar 17 - Mar 22
found 11 hours ago
Roundtrip flight included
Seattle (SEA) to Ontario (ONT)
Idyllwild Inn

Idyllwild Inn

2 out of 5
Price was CA $845, price is now CA $675 per person
CA $675
per person
Mar 17 - Mar 22
found 11 hours ago
Roundtrip flight included
Seattle (SEA) to Ontario (ONT)
Quality Inn Banning I-10

Quality Inn Banning I-10

2.5 out of 5
Price was CA $818, price is now CA $707 per person
CA $707
per person
Mar 17 - Mar 22
found 11 hours ago
Roundtrip flight included
Seattle (SEA) to Ontario (ONT)
Travelodge by Wyndham Banning CA Near Casino/Outlet Mall

Travelodge by Wyndham Banning CA Near Casino/Outlet Mall

2 out of 5
Price was CA $713, price is now CA $713 per person
CA $713
per person
Mar 17 - Mar 22
found 11 hours ago
Roundtrip flight included
Seattle (SEA) to Ontario (ONT)
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Frequently asked questions

Are there direct flights from Sea-Tac Airport to Ontario Airport?
If you'd love to travel from Seattle - Tacoma Intl. Airport (SEA) to Los Angeles - Ontario Intl. Airport (ONT) as quickly as possible, you'll be happy to know multiple airlines operate direct flights. Choose your favorite seat with Alaska Airlines or Delta.
What airlines fly from Sea-Tac Airport to Los Angeles - Ontario Intl. Airport (ONT)?
If you're planning a trip to Ontario from Seattle, there are a few airlines offering direct flights. One of the top carriers is Alaska Airlines (AS), which operates 108 flights every month. You'll want to also check out the deals available through Delta (DL). Another popular airline, it operates 91 flights every month on the Seattle to Ontario route. Be sure to compare the two airlines to find your perfect fare.
What is the best day to buy a plane ticket?
Airfares offered on Friday tend to be the cheapest, according to flight demand on Travelocity.ca in 2021. Purchasing your airfares on a Thursday or Saturday can also provide better value, however our advice if you're looking to save money is to avoid booking on a Wednesday or Sunday. Our data shows that those two days have the highest ticket values on average, so keep this in mind if you're browsing flight deals.
What are the cheapest days to fly?
Frequent travellers may already know this, but earlier in the week is often the cheapest time to fly. Flights departing on a Monday are the cheapest of the week. Since flights towards the middle of the week tend to be more popular, this causes the prices to rise. This is why, on average, airfares booked on Travelocity.ca in 2021 were most expensive for Wednesday departures.
How far in advance can you book a flight?
Here's the deal: It is typically possible to start comparing international airfares on Travelocity.ca up to 12 months in advance. However, it does depend on the carrier as not all airlines release their prices that far out. According to our 2021 flight demand trends, last minute planners can still bag a bargain with some of the cheapest fares appearing 2-4 weeks prior to their travel dates.*According to flight demand on Travelocity.ca from January to December 2021. Savings are subject to change and may vary depending on selections made.

Popular Flight Routes from Seattle (SEA)

Travelers at SEA love to visit these top cities. Roam to the top destinations from Seattle (SEA) today with the cheap prices from Travelocity!

Popular Flight Routes from Ontario (ONT)

Travelers at ONT love to visit these top cities. Roam to the top destinations from Ontario(ONT) today with the cheap prices from Travelocity!

*Price based on the lowest price found within past 24 hours and based upon one night stay for two adults over the next thirty days. Prices and availability subject to change. Additional terms may apply.