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

Wander Wisely with exceptional service, 24/7 supportOpens in a new window

Feel at ease with free flight cancellations within 24 hours of booking

Change your flight without a fee on select flights

Find The Best Dates To Fly

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

The cheapest flights to Los Angeles - Ontario Intl. found within the past 7 days were CA $139 round trip and CA $110 one way. Prices and availability subject to change. Additional terms may apply.

Mon, Jan 5 - Mon, Jan 12
SEA
Seattle
ONT
Ontario
CA $139 Roundtrip, found 1 day ago
CA $139
Roundtrip
found 1 day ago
Select Delta flight, departing Mon, Jan 5 from Seattle to Ontario, returning Mon, Jan 12, priced at CA $139 found 1 day ago
Mon, Jan 5 - Sat, Jan 10
SEA
Seattle
ONT
Ontario
CA $140 Roundtrip, found 1 day ago
CA $140
Roundtrip
found 1 day ago
Select Delta flight, departing Mon, Jan 5 from Seattle to Ontario, returning Sat, Jan 10, priced at CA $140 found 1 day ago
Sat, Jan 10 - Sun, Jan 11
SEA
Seattle
ONT
Ontario
CA $141 Roundtrip, found 1 day ago
CA $141
Roundtrip
found 1 day ago
Select Delta flight, departing Sat, Jan 10 from Seattle to Ontario, returning Sun, Jan 11, priced at CA $141 found 1 day ago
Thu, Jan 22 - Wed, Jan 28
SEA
Seattle
ONT
Ontario
CA $164 Roundtrip, found 1 day ago
CA $164
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Thu, Jan 22 from Seattle to Ontario, returning Wed, Jan 28, priced at CA $164 found 1 day ago
Mon, Jan 5 - Sun, Jan 11
SEA
Seattle
ONT
Ontario
CA $164 Roundtrip, found 3 days ago
CA $164
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Mon, Jan 5 from Seattle to Ontario, returning Sun, Jan 11, priced at CA $164 found 3 days ago
Tue, Jan 20 - Thu, Feb 5
SEA
Seattle
ONT
Ontario
CA $167 Roundtrip, found 4 days ago
CA $167
Roundtrip
found 4 days ago
Select Hawaiian Airlines flight, departing Tue, Jan 20 from Seattle to Ontario, returning Thu, Feb 5, priced at CA $167 found 4 days ago
Tue, Jan 20 - Tue, Feb 3
SEA
Seattle
ONT
Ontario
CA $167 Roundtrip, found 4 days ago
CA $167
Roundtrip
found 4 days ago
Select Alaska Airlines flight, departing Tue, Jan 20 from Seattle to Ontario, returning Tue, Feb 3, priced at CA $167 found 4 days ago
Tue, Jan 6 - Wed, Jan 21
SEA
Seattle
ONT
Ontario
CA $167 Roundtrip, found 4 days ago
CA $167
Roundtrip
found 4 days ago
Select Alaska Airlines flight, departing Tue, Jan 6 from Seattle to Ontario, returning Wed, Jan 21, priced at CA $167 found 4 days ago
Fri, Jan 2 - Sun, Jan 11
SEA
Seattle
ONT
Ontario
CA $192 Roundtrip, found 2 days ago
CA $192
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Fri, Jan 2 from Seattle to Ontario, returning Sun, Jan 11, priced at CA $192 found 2 days ago
Mon, Jan 5 - Sun, Jan 11
SEA
Seattle
ONT
Ontario
CA $193 Roundtrip, found 3 days ago
CA $193
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Mon, Jan 5 from Seattle to Ontario, returning Sun, Jan 11, priced at CA $193 found 3 days ago

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

Price found within the past 48 hours. Click for updated prices.
Palm Inn Motel Montclair - Pomona

Palm Inn Motel Montclair - Pomona

2.5 out of 5
Price was CA $801, price is now CA $785 per person
CA $785
per person
Dec 27 - Dec 30
found 1 day ago
Roundtrip flight included
Seattle (SEA) to Ontario (ONT)
Don't see what you're looking for?
See all available trips from Seattle - Tacoma Intl. to Los Angeles - Ontario Intl.
View all trips

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.