Cheap Flights From Macdonald-Cartier Intl. (YOW) To Washington Dulles Intl. (IAD)

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Cheapest Flights from Ottawa (YOW) to Washington (IAD)

The cheapest flights to Washington Dulles Intl. found within the past 7 days were CA $386 round trip and CA $225 one way. Prices and availability subject to change. Additional terms may apply.

Mon., Sep. 8 - Mon., Sep. 15
YOW
Ottawa
IAD
Washington
CA $386 Roundtrip, found 1 day ago
CA $386
Roundtrip
found 1 day ago
Select Porter Airlines flight, departing Mon., Sep. 8 from Ottawa to Washington, returning Mon., Sep. 15, priced at CA $386 found 1 day ago
Wed., Aug. 13 - Thu., Sep. 4
YOW
Ottawa
IAD
Washington
CA $398 Roundtrip, found 2 days ago
CA $398
Roundtrip
found 2 days ago
Select Porter Airlines flight, departing Wed., Aug. 13 from Ottawa to Washington, returning Thu., Sep. 4, priced at CA $398 found 2 days ago
Fri., Aug. 29 - Mon., Sep. 8
YOW
Ottawa
IAD
Washington
CA $403 Roundtrip, found 4 days ago
CA $403
Roundtrip
found 4 days ago
Select Porter Airlines flight, departing Fri., Aug. 29 from Ottawa to Washington, returning Mon., Sep. 8, priced at CA $403 found 4 days ago
Thu., Jul. 17 - Thu., Jul. 17
YOW
Ottawa
IAD
Washington
CA $407 Roundtrip, found 2 days ago
CA $407
Roundtrip
found 2 days ago
Select Porter Airlines flight, departing Thu., Jul. 17 from Ottawa to Washington, returning Thu., Jul. 17, priced at CA $407 found 2 days ago
Fri., Aug. 29 - Wed., Sep. 3
YOW
Ottawa
IAD
Washington
CA $408 Roundtrip, found 4 days ago
CA $408
Roundtrip
found 4 days ago
Select Porter Airlines flight, departing Fri., Aug. 29 from Ottawa to Washington, returning Wed., Sep. 3, priced at CA $408 found 4 days ago
Fri., Aug. 15 - Sun., Aug. 24
YOW
Ottawa
IAD
Washington
CA $409 Roundtrip, found 2 days ago
CA $409
Roundtrip
found 2 days ago
Select Porter Airlines flight, departing Fri., Aug. 15 from Ottawa to Washington, returning Sun., Aug. 24, priced at CA $409 found 2 days ago
Mon., Jul. 28 - Fri., Aug. 1
YOW
Ottawa
IAD
Washington
CA $414 Roundtrip, found 4 days ago
CA $414
Roundtrip
found 4 days ago
Select Porter Airlines flight, departing Mon., Jul. 28 from Ottawa to Washington, returning Fri., Aug. 1, priced at CA $414 found 4 days ago
Sat., Aug. 30 - Sun., Sep. 7
YOW
Ottawa
IAD
Washington
CA $416 Roundtrip, found 3 days ago
CA $416
Roundtrip
found 3 days ago
Select Porter Airlines flight, departing Sat., Aug. 30 from Ottawa to Washington, returning Sun., Sep. 7, priced at CA $416 found 3 days ago
Thu., Jul. 31 - Mon., Aug. 4
YOW
Ottawa
IAD
Washington
CA $419 Roundtrip, found 4 days ago
CA $419
Roundtrip
found 4 days ago
Select Porter Airlines flight, departing Thu., Jul. 31 from Ottawa to Washington, returning Mon., Aug. 4, priced at CA $419 found 4 days ago
Wed., Jul. 30 - Sun., Aug. 10
YOW
Ottawa
IAD
Washington
CA $420 Roundtrip, found 5 days ago
CA $420
Roundtrip
found 5 days ago
Select Porter Airlines flight, departing Wed., Jul. 30 from Ottawa to Washington, returning Sun., Aug. 10, priced at CA $420 found 5 days ago

Frequently asked questions

Are there direct flights from Ottawa International Airport to Washington Dulles Intl. Airport (IAD)?
You can't get a flight direct from Macdonald-Cartier Intl. Airport (YOW) to Dulles Intl. Airport, but there's no need to panic. Air Canada, Porter Airlines and United Airlines have flights with only one stopover.
What airlines fly from Ottawa International Airport to Dulles Intl. Airport?
As there are no direct flights offered between Macdonald-Cartier Intl. Airport (YOW) and Dulles Intl. Airport, you'll have at least one stopover. Best to plan ahead if you want to find the most efficient route and save yourself some time.
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 Ottawa (YOW)

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

Popular Flight Routes from Washington (IAD)

Travelers at IAD love to visit these top cities. Roam to the top destinations from Washington(IAD) 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.