Cheap Flights From Denver Intl. (DEN) To Los Angeles - Ontario Intl. (ONT)

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Cheapest Flights from Denver (DEN) to Ontario (ONT)

The cheapest flights to Los Angeles - Ontario Intl. found within the past 7 days were CA $391 round trip and CA $370 one way. Prices and availability subject to change. Additional terms may apply.

Thu, Dec 11 - Mon, Dec 15
DEN
Denver
ONT
Ontario
CA $391 Roundtrip, found 23 hours ago
CA $391
Roundtrip
found 23 hours ago
Select Alaska Airlines flight, departing Thu, Dec 11 from Denver to Ontario, returning Mon, Dec 15, priced at CA $391 found 23 hours ago
Thu, Dec 11 - Mon, Dec 15
DEN
Denver
ONT
Ontario
CA $398 Roundtrip, found 23 hours ago
CA $398
Roundtrip
found 23 hours ago
Select Alaska Airlines flight, departing Thu, Dec 11 from Denver to Ontario, returning Mon, Dec 15, priced at CA $398 found 23 hours ago
Thu, Dec 11 - Mon, Dec 15
DEN
Denver
ONT
Ontario
CA $407 Roundtrip, found 23 hours ago
CA $407
Roundtrip
found 23 hours ago
Select Alaska Airlines flight, departing Thu, Dec 11 from Denver to Ontario, returning Mon, Dec 15, priced at CA $407 found 23 hours ago
Thu, Dec 11 - Mon, Dec 15
DEN
Denver
ONT
Ontario
CA $412 Roundtrip, found 23 hours ago
CA $412
Roundtrip
found 23 hours ago
Select Alaska Airlines flight, departing Thu, Dec 11 from Denver to Ontario, returning Mon, Dec 15, priced at CA $412 found 23 hours ago
Thu, Dec 11 - Mon, Dec 15
DEN
Denver
ONT
Ontario
CA $473 Roundtrip, found 23 hours ago
CA $473
Roundtrip
found 23 hours ago
Select Alaska Airlines flight, departing Thu, Dec 11 from Denver to Ontario, returning Mon, Dec 15, priced at CA $473 found 23 hours ago
Thu, Dec 11 - Mon, Dec 15
DEN
Denver
ONT
Ontario
CA $480 Roundtrip, found 23 hours ago
CA $480
Roundtrip
found 23 hours ago
Select Alaska Airlines flight, departing Thu, Dec 11 from Denver to Ontario, returning Mon, Dec 15, priced at CA $480 found 23 hours ago
Thu, Dec 11 - Mon, Dec 15
DEN
Denver
ONT
Ontario
CA $489 Roundtrip, found 23 hours ago
CA $489
Roundtrip
found 23 hours ago
Select Alaska Airlines flight, departing Thu, Dec 11 from Denver to Ontario, returning Mon, Dec 15, priced at CA $489 found 23 hours ago
Thu, Dec 11 - Mon, Dec 15
DEN
Denver
ONT
Ontario
CA $494 Roundtrip, found 23 hours ago
CA $494
Roundtrip
found 23 hours ago
Select Alaska Airlines flight, departing Thu, Dec 11 from Denver to Ontario, returning Mon, Dec 15, priced at CA $494 found 23 hours ago
Sat, Nov 8 - Tue, Nov 11
DEN
Denver
ONT
Ontario
CA $853 Roundtrip, found 20 hours ago
CA $853
Roundtrip
found 20 hours ago
Select Alaska Airlines flight, departing Sat, Nov 8 from Denver to Ontario, returning Tue, Nov 11, priced at CA $853 found 20 hours ago
Sat, Nov 8 - Tue, Nov 11
DEN
Denver
ONT
Ontario
CA $857 Roundtrip, found 20 hours ago
CA $857
Roundtrip
found 20 hours ago
Select Alaska Airlines flight, departing Sat, Nov 8 from Denver to Ontario, returning Tue, Nov 11, priced at CA $857 found 20 hours ago
Sat, Nov 8 - Tue, Nov 11
DEN
Denver
ONT
Ontario
CA $878 Roundtrip, found 20 hours ago
CA $878
Roundtrip
found 20 hours ago
Select Alaska Airlines flight, departing Sat, Nov 8 from Denver to Ontario, returning Tue, Nov 11, priced at CA $878 found 20 hours ago
Sat, Nov 8 - Tue, Nov 11
DEN
Denver
ONT
Ontario
CA $1,038 Roundtrip, found 20 hours ago
CA $1,038
Roundtrip
found 20 hours ago
Select Alaska Airlines flight, departing Sat, Nov 8 from Denver to Ontario, returning Tue, Nov 11, priced at CA $1,038 found 20 hours ago
Sat, Nov 8 - Tue, Nov 11
DEN
Denver
ONT
Ontario
CA $1,042 Roundtrip, found 20 hours ago
CA $1,042
Roundtrip
found 20 hours ago
Select Alaska Airlines flight, departing Sat, Nov 8 from Denver to Ontario, returning Tue, Nov 11, priced at CA $1,042 found 20 hours ago
Sat, Nov 8 - Tue, Nov 11
DEN
Denver
ONT
Ontario
CA $1,063 Roundtrip, found 20 hours ago
CA $1,063
Roundtrip
found 20 hours ago
Select Alaska Airlines flight, departing Sat, Nov 8 from Denver to Ontario, returning Tue, Nov 11, priced at CA $1,063 found 20 hours ago

Frequently asked questions

Are there direct flights from DEN to Los Angeles - Ontario Intl. Airport (ONT)?
Begin your getaway in the most stress-free way possible and head straight to Los Angeles - Ontario Intl. Airport (ONT) from DEN. Southwest Airlines and United Airlines are among the airlines that offer direct services on this route.
What airlines fly from Denver Intl. Airport (DEN) to Ontario Airport?
Choose from a number of airlines offering direct flights between Denver and Ontario. Southwest Airlines (WN) is one of the most popular. This carrier offers 86 flights each month. If you want more options, have a look at the deals on offer from United Airlines (UA). This carrier operates 60 flights every month. Between the two, we're sure you'll find a deal to suit your travel needs.
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 Denver (DEN)

Travelers at DEN love to visit these top cities. Roam to the top destinations from Denver (DEN) 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.