$193 Cheap Flights from Washington (IAD) to Ottawa (YOW)

View $193 flight on Wed, Nov 12, 2025Opens in a new window

Popular airlines from Washington Dulles Intl. Airport (IAD) to Ottawa International Airport (YOW)

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Cheap Flights from Washington to Ottawa (IAD-YOW)

Prices were available within the past 7 days and start at $193 for one-way flights and $326 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Fri, Oct 24 - Sat, Oct 25
IAD
Washington
YOW
Ottawa
$326 Roundtrip, found 5 days ago
$326
Roundtrip
found 5 days ago
Select United flight, departing Fri, Oct 24 from Washington to Ottawa, returning Sat, Oct 25, priced at $326 found 5 days ago
Air Canada
Tue, Oct 28 - Sun, Nov 2
IAD
Washington
YOW
Ottawa
$394 Roundtrip, found 4 days ago
$394
Roundtrip
found 4 days ago
Select Air Canada flight, departing Tue, Oct 28 from Washington to Ottawa, returning Sun, Nov 2, priced at $394 found 4 days ago
Porter Airlines
Fri, Nov 21 - Mon, Nov 24
IAD
Washington
YOW
Ottawa
$397 Roundtrip, found 1 hour ago
$397
Roundtrip
found 1 hour ago
Select Porter Airlines flight, departing Fri, Nov 21 from Washington to Ottawa, returning Mon, Nov 24, priced at $397 found 1 hour ago
Air Canada
Sat, Nov 29 - Tue, Dec 2
IAD
Washington
YOW
Ottawa
$398 Roundtrip, found 4 days ago
$398
Roundtrip
found 4 days ago
Select Air Canada flight, departing Sat, Nov 29 from Washington to Ottawa, returning Tue, Dec 2, priced at $398 found 4 days ago
Porter Airlines
Tue, Oct 28 - Sat, Nov 1
IAD
Washington
YOW
Ottawa
$403 Roundtrip, found 8 hours ago
$403
Roundtrip
found 8 hours ago
Select Porter Airlines flight, departing Tue, Oct 28 from Washington to Ottawa, returning Sat, Nov 1, priced at $403 found 8 hours ago
Air Canada
Sat, Nov 1 - Tue, Nov 4
IAD
Washington
YOW
Ottawa
$407 Roundtrip, found 5 days ago
$407
Roundtrip
found 5 days ago
Select Air Canada flight, departing Sat, Nov 1 from Washington to Ottawa, returning Tue, Nov 4, priced at $407 found 5 days ago
Air Canada
Sat, Nov 29 - Tue, Dec 2
IAD
Washington
YOW
Ottawa
$413 Roundtrip, found 4 days ago
$413
Roundtrip
found 4 days ago
Select Air Canada flight, departing Sat, Nov 29 from Washington to Ottawa, returning Tue, Dec 2, priced at $413 found 4 days ago
Porter Airlines
Fri, Nov 14 - Mon, Nov 17
IAD
Washington
YOW
Ottawa
$417 Roundtrip, found 1 day ago
$417
Roundtrip
found 1 day ago
Select Porter Airlines flight, departing Fri, Nov 14 from Washington to Ottawa, returning Mon, Nov 17, priced at $417 found 1 day ago
Air Canada
Sat, Dec 6 - Mon, Dec 8
IAD
Washington
YOW
Ottawa
$422 Roundtrip, found 3 days ago
$422
Roundtrip
found 3 days ago
Select Air Canada flight, departing Sat, Dec 6 from Washington to Ottawa, returning Mon, Dec 8, priced at $422 found 3 days ago
WestJet
Mon, Nov 24 - Tue, Nov 25
IAD
Washington
YOW
Ottawa
$1,190 Roundtrip, found 1 day ago
$1,190
Roundtrip
found 1 day ago
Select WestJet flight, departing Mon, Nov 24 from Washington to Ottawa, returning Tue, Nov 25, priced at $1,190 found 1 day ago

Find the cheapest month to fly from Washington (IAD) to Ottawa (YOW)

April is typically the cheapest month to fly

From $258 - $647 per traveler.

Alternative airports near Ottawa

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Macdonald-Cartier Intl. YOW. Cheapest option available. Average driving time to city center is 15 minutes. Flights from $598
YOW
Macdonald-Cartier Intl.
Cheapest
Average driving time to city center15 min
Flights from $598
Flights from Washington (IAD) to Ottawa (YOW)
Origin airport
Washington Dulles Intl.
Destination airport
Macdonald-Cartier Intl.
Airlines serving
Air Canada, Porter Airlines, United, WestJet
Roundtrip price
$297
Distance
449 mi
Average flight time
1 hour 39 mins

Washington to Ottawa Flights

The cheapest times to fly from Washington to Ottawa

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Washington to Ottawa are during the month of October. You can find some of the cheapest flights from Washington to Ottawa with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Washington to Ottawa

Sunday is one of the best days to book for cheap flights from Washington to Ottawa: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Washington to Ottawa

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Washington to Ottawa in 2025. You can also book with separate airlines for your outbound and return journeys, from $193 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Washington to Ottawa flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Washington to Ottawa airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Washington Dulles Intl. Airport (IAD) to Macdonald-Cartier Intl. Airport (YOW) cost?
Lock in a cheap one-way flight from $193 or cheap return flight from $326 from Washington Dulles Intl. Airport (IAD) to Macdonald-Cartier Intl. Airport (YOW) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Washington Dulles Intl. Airport (IAD) to Macdonald-Cartier Intl. Airport (YOW)?
Traveling in October is a good way to save, as it's the cheapest month for flights between IAD and YOW. You'll usually find the lowest prices during the off-season.
Which airlines fly direct from Washington Dulles Intl. Airport (IAD) to Macdonald-Cartier Intl. Airport (YOW)?
If you're departing from Washington Dulles Intl. Airport (IAD), you can hop on a nonstop flight to Macdonald-Cartier Intl. Airport (YOW) with United Airlines.
What is the cheapest airline that flies from Washington Dulles Intl. Airport (IAD) to Macdonald-Cartier Intl. Airport (YOW)?
To find the cheapest airline flying from IAD to YOW, use Expedia's filter tool. Customize your search based on what's important to you, such as preferred carriers and ideal departure window. You can then sort your results by "Price (lowest to highest)" to see the cheapest fares upfront.
How many flights per day from Washington Dulles Intl. Airport (IAD) to Macdonald-Cartier Intl. Airport (YOW)?
Daily, an average of 2 direct flights operate from Washington Dulles Intl. Airport (IAD) to Macdonald-Cartier Intl. Airport (YOW). Choose the departure that best suits your travel plans.
What are the most popular departure times for flights from Washington Dulles Intl. Airport (IAD) to Macdonald-Cartier Intl. Airport (YOW)?
Flights between IAD and YOW are busiest at 12 PM. For a more relaxed atmosphere and potentially cheaper prices, look for a time when demand is lower.
What day of the week has the most flights from IAD to YOW?
Travel on a Friday if you're looking for the best selection of flights from Washington Dulles Intl. Airport (IAD) to Macdonald-Cartier Intl. Airport (YOW).
What is the earliest flight from Washington Dulles Intl. Airport (IAD) to Macdonald-Cartier Intl. Airport (YOW)?
Washington Dulles Intl. Airport (IAD)'s earliest flight to Macdonald-Cartier Intl. Airport (YOW) is at approximately 12:49PM UTC-5. With a travel time of 1h 40m, you'll arrive at around 2:29PM UTC-5.
How long does it take to fly from Washington Dulles Intl. Airport (IAD) to Macdonald-Cartier Intl. Airport (YOW)?
The average flight duration from IAD to YOW is 1 hour and 43 minutes, covering a total distance of 450 mi.
What airline has the least delays from IAD to YOW?
Consider traveling with Air Canada if you'd like to fly straight from Washington Dulles Intl. Airport (IAD) to Macdonald-Cartier Intl. Airport (YOW) without any interruptions. This carrier has the strongest track record for punctuality, with an on-time score of 84%. Want to be updated if anything changes? You can keep an eye on your flight status using the Expedia App.
What is the best time to fly from Washington Dulles Intl. Airport (IAD) to Macdonald-Cartier Intl. Airport (YOW)?
To avoid possible delays on the Washington Dulles Intl. Airport (IAD) to Macdonald-Cartier Intl. Airport (YOW) route, aim to fly before 3 PM. Later flights have a 22% higher chance of being canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for Ottawa from Washington Dulles Intl. Airport (IAD)?
Board a direct flight from Washington Dulles Intl. Airport (IAD) to Ottawa and land at Macdonald-Cartier Intl. Airport (YOW). An alternative gateway to this destination is Ogdensburg Intl. Airport (OGS).
Is it cheaper to buy a plane ticket from Washington Dulles Intl. Airport (IAD) to Macdonald-Cartier Intl. Airport (YOW) last-minute?
Last-minute bookings from IAD to YOW are usually more expensive. To lock in the lowest prices, start searching for flights well ahead of time. That being said, if your travel plans are flexible, it's possible to find a cheap fare right before your trip.
Is it cheaper to book an IAD to YOW flight and hotel package?
Compared with arranging flights and hotels separately, booking an IAD to YOW flight and hotel package with Expedia could lead to significant savings. What's more, having everything in one convenient place will take the stress out of planning your trip. Just pick your flights and choose from our extensive range of stays, then customize your trip with other add-ons like tours, car rentals and activities.
Can I cancel or change the date of my flight from Washington Dulles Intl. Airport (IAD) to Macdonald-Cartier Intl. Airport (YOW)?
Generally, it's possible to cancel or reschedule your IAD to YOW flight. However, if the booking was made more than 24 hours ago, additional fees may apply. Check your airline's policies in your itinerary to see what changes are possible and if any costs are involved. You'll also find more information on our Customer Service portal.

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