Cheap Flights From Washington Dulles Intl. (IAD) To Ontario Intl. Airport (ONT)

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Cheapest Flights from Washington (IAD) to Ontario Intl. Airport (ONT)

The cheapest flights to Ontario Intl. Airport found within the past 7 days were CA $802 round trip and CA $408 one way. Prices and availability subject to change. Additional terms may apply.

Tue, Jun 30 - Wed, Jul 8
IAD
Washington
ONT
Ontario
CA $802 Roundtrip, found 4 days ago
CA $802
Roundtrip
found 4 days ago
Select Alaska Airlines flight, departing Tue, Jun 30 from Washington to Ontario, returning Wed, Jul 8, priced at CA $802 found 4 days ago
Tue, Jun 30 - Wed, Jul 8
IAD
Washington
ONT
Ontario
CA $860 Roundtrip, found 4 days ago
CA $860
Roundtrip
found 4 days ago
Select Alaska Airlines flight, departing Tue, Jun 30 from Washington to Ontario, returning Wed, Jul 8, priced at CA $860 found 4 days ago
Tue, Jun 30 - Wed, Jul 8
IAD
Washington
ONT
Ontario
CA $863 Roundtrip, found 4 days ago
CA $863
Roundtrip
found 4 days ago
Select Alaska Airlines flight, departing Tue, Jun 30 from Washington to Ontario, returning Wed, Jul 8, priced at CA $863 found 4 days ago
Tue, Jun 30 - Wed, Jul 8
IAD
Washington
ONT
Ontario
CA $1,062 Roundtrip, found 4 days ago
CA $1,062
Roundtrip
found 4 days ago
Select Alaska Airlines flight, departing Tue, Jun 30 from Washington to Ontario, returning Wed, Jul 8, priced at CA $1,062 found 4 days ago
Tue, Jun 30 - Wed, Jul 8
IAD
Washington
ONT
Ontario
CA $1,120 Roundtrip, found 4 days ago
CA $1,120
Roundtrip
found 4 days ago
Select Alaska Airlines flight, departing Tue, Jun 30 from Washington to Ontario, returning Wed, Jul 8, priced at CA $1,120 found 4 days ago
Wed, Jun 10 - Tue, Jun 16
IAD
Washington
ONT
Ontario
CA $1,159 Roundtrip, found 2 days ago
CA $1,159
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Wed, Jun 10 from Washington to Ontario, returning Tue, Jun 16, priced at CA $1,159 found 2 days ago
Tue, Jun 30 - Wed, Jul 8
IAD
Washington
ONT
Ontario
CA $1,166 Roundtrip, found 4 days ago
CA $1,166
Roundtrip
found 4 days ago
Select Alaska Airlines flight, departing Tue, Jun 30 from Washington to Ontario, returning Wed, Jul 8, priced at CA $1,166 found 4 days ago
Wed, Jun 10 - Tue, Jun 16
IAD
Washington
ONT
Ontario
CA $1,195 Roundtrip, found 2 days ago
CA $1,195
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Wed, Jun 10 from Washington to Ontario, returning Tue, Jun 16, priced at CA $1,195 found 2 days ago
Tue, Jun 30 - Wed, Jul 8
IAD
Washington
ONT
Ontario
CA $1,200 Roundtrip, found 4 days ago
CA $1,200
Roundtrip
found 4 days ago
Select Alaska Airlines flight, departing Tue, Jun 30 from Washington to Ontario, returning Wed, Jul 8, priced at CA $1,200 found 4 days ago
Tue, Jun 30 - Wed, Jul 8
IAD
Washington
ONT
Ontario
CA $1,224 Roundtrip, found 4 days ago
CA $1,224
Roundtrip
found 4 days ago
Select Alaska Airlines flight, departing Tue, Jun 30 from Washington to Ontario, returning Wed, Jul 8, priced at CA $1,224 found 4 days ago
Tue, Jun 30 - Wed, Jul 8
IAD
Washington
ONT
Ontario
CA $1,232 Roundtrip, found 4 days ago
CA $1,232
Roundtrip
found 4 days ago
Select Alaska Airlines flight, departing Tue, Jun 30 from Washington to Ontario, returning Wed, Jul 8, priced at CA $1,232 found 4 days ago
Wed, Jun 10 - Tue, Jun 16
IAD
Washington
ONT
Ontario
CA $1,400 Roundtrip, found 2 days ago
CA $1,400
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Wed, Jun 10 from Washington to Ontario, returning Tue, Jun 16, priced at CA $1,400 found 2 days ago

Frequently asked questions

Are there direct flights from IAD to ONT?
You can't get a flight direct from IAD to Los Angeles - Ontario Intl. Airport (ONT), but there's no need to stress. United Airlines, Delta and American Airlines operate flights with only one stopover.
What airlines fly from IAD to Ontario Airport?
No airlines are currently offering direct flights between IAD and ONT. Save time and avoid unnecessary stopovers by investigating the best routes well in advance.
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.
*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.