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Cheap flights from Washington, D.C. to Ottawa from $127

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. to Ottawa departing on 5/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Washington, D.C. to Ottawa

Cheap round-trip flights

KAYAK's recommended round-trip deals from the most popular airlines that fly from Washington, D.C. to Ottawa.
Porter Airlines Logo
11:35 am - 4:33 pmIAD-YOW
4h 58m1 stop
Porter Airlines Logo
10:15 am - 3:06 pmYOW-IAD
4h 51m1 stop
$315Porter Airlines
Find Deal
Mon, May 26 - Wed, May 28
Porter Airlines Logo
4:20 pm - 9:03 pmIAD-YOW
4h 43m1 stop
Porter Airlines Logo
10:15 am - 3:06 pmYOW-IAD
4h 51m1 stop
$321Porter Airlines
Find Deal
Wed, May 21 - Wed, May 28
 Logo
4:20 pm - 12:22 amIAD-YOW
8h 02m1 stop
 Logo
9:35 am - 3:06 pmYOW-IAD
5h 31m1 stop
Tue, May 27 - Sun, Jun 1
 Logo
4:20 pm - 12:22 amIAD-YOW
8h 02m1 stop
 Logo
7:00 am - 10:16 amYOW-IAD
3h 16m1 stop
Tue, May 27 - Mon, Jun 2
Air Canada Logo
12:55 pm - 2:27 pmDCA-YOW
1h 32mnonstop
Air Canada Logo
10:25 am - 12:01 pmYOW-DCA
1h 36mnonstop
$351Air Canada
Find Deal
Tue, May 27 - Mon, Jun 2
Air Canada Logo
12:55 pm - 2:27 pmDCA-YOW
1h 32mnonstop
Air Canada Logo
6:00 am - 10:19 amYOW-DCA
4h 19m1 stop
$353Air Canada
Find Deal
Sat, May 24 - Sat, May 31
United Airlines Logo
12:55 pm - 2:27 pmDCA-YOW
1h 32mnonstop
United Airlines Logo
10:25 am - 12:01 pmYOW-DCA
1h 36mnonstop
$439United Airlines
Find Deal
Tue, May 27 - Fri, May 30
United Airlines Logo
6:59 am - 1:09 pmDCA-YOW
6h 10m1 stop
United Airlines Logo
10:25 am - 12:01 pmYOW-DCA
1h 36mnonstop
$451United Airlines
Find Deal
Wed, May 21 - Wed, May 28
WestJet Logo
5:40 am - 6:45 amBWI-YOW
25h 05m2 stops
WestJet Logo
6:05 am - 10:25 pmYOW-BWI
16h 20m2 stops
$778WestJet
Find Deal
Sat, May 24 - Sat, May 31
WestJet Logo
10:28 am - 12:22 amBWI-YOW
13h 54m2 stops
WestJet Logo
5:15 pm - 6:38 pmYOW-BWI
25h 23m2 stops
$815WestJet
Find Deal
Thu, Jun 12 - Sun, Jun 15

Porter Airlines flights from Washington, D.C. to Ottawa

Our best Porter Airlines deals on Washington, D.C. to Ottawa flight tickets
Porter Airlines
May 26
IAD11:35 amWashington, D.C. Dulles Intl
4h 58m
1 stop
YOW4:33 pmOttawa
May 28
YOW10:15 amOttawa
4h 51m
1 stop
IAD3:06 pmWashington, D.C. Dulles Intl
Porter Airlines
May 21
IAD4:20 pmWashington, D.C. Dulles Intl
4h 43m
1 stop
YOW9:03 pmOttawa
May 28
YOW10:15 amOttawa
4h 51m
1 stop
IAD3:06 pmWashington, D.C. Dulles Intl
Porter Airlines
Jun 12
IAD4:20 pmWashington, D.C. Dulles Intl
4h 43m
1 stop
YOW9:03 pmOttawa
Jun 22
YOW7:00 amOttawa
3h 16m
1 stop
IAD10:16 amWashington, D.C. Dulles Intl

Air Canada flights from Washington, D.C. to Ottawa

Our best Air Canada deals on Washington, D.C. to Ottawa flight tickets
Air Canada
May 27
DCA12:55 pmWashington, D.C. Reagan-National
1h 32m
YOW2:27 pmOttawa
Jun 2
YOW10:25 amOttawa
1h 36m
DCA12:01 pmWashington, D.C. Reagan-National
Air Canada
May 24
DCA12:55 pmWashington, D.C. Reagan-National
1h 32m
YOW2:27 pmOttawa
May 31
YOW6:00 amOttawa
4h 19m
1 stop
DCA10:19 amWashington, D.C. Reagan-National
Air Canada
May 27
DCA4:35 pmWashington, D.C. Reagan-National
5h 32m
1 stop
YOW10:07 pmOttawa
Jun 1
YOW1:55 pmOttawa
5h 48m
1 stop
DCA7:43 pmWashington, D.C. Reagan-National

See travel insights to Ottawa from

How to get the cheapest flight ticket from Washington, D.C. to Ottawa

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between Washington, D.C. and Ottawa?

What is the cheapest month to fly to Ottawa?

In general, January is the cheapest month to fly from Washington, D.C. to Ottawa. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $257. The month of November is another great option to travel to Ottawa, with average flight prices from Washington, D.C. averaging around $309.

What is the cheapest day to depart on your flight to Ottawa?

The cheapest day to depart from Washington, D.C. to Ottawa is on a Thursday. Travelers who choose to depart for Ottawa on a Thursday will often find tickets for as low as $426. Be sure to avoid booking your departure on a Tuesday as prices are generally higher than usual. According to our data, the average ticket price to Ottawa on Tuesday is $546.

What is the cheapest time of day to depart on your flight to Ottawa?

At noon is the cheapest time of day to fly from Washington, D.C. to Ottawa when you can find flight prices for as low as $348. Flying to Ottawa at noon is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $648 on average. Flights to Ottawa from Washington, D.C. in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.

What is the cheapest Washington, D.C. to Ottawa flight route?

Fly from Washington, D.C. Reagan-National to Ottawa for the best Washington, D.C. - Ottawa flight prices

How far in advance should I book a flight to Ottawa?

You are more likely to see cheaper flights to Ottawa from Washington, D.C. when booking 10 weeks ahead of your departure date. In general, you can expect to find flights to Ottawa for around $392 when searching 10 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Ottawa from Washington, D.C. for as low as $266 on momondo.

What cabin class options are available on Washington, D.C. to Ottawa flights?

There are 4 cabin classes available to choose from on Washington, D.C. to Ottawa flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have Washington, D.C. to Ottawa flight prices changed over time?

As of April 2025, prices for Washington, D.C. to Ottawa flights are approximately 43% more expensive when compared to flights at the same time last year.

When to book flights from Washington, D.C. to Ottawa

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. to Ottawa according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Washington, D.C. to Ottawa (WAS to YOW) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. to Ottawa

Best Price Found

$127

Fastest flight time

1h 32m

Direct flights

Every day

Airports in Ottawa

1 airport
The best one-way flight to Ottawa from Washington, D.C. in the past 72 hours is $127. The best round-trip flight deal from Washington, D.C. to Ottawa found on momondo in the last 72 hours is $315.
The fastest flight from Washington, D.C. to Ottawa takes 1h 32m
Direct flights go from Washington, D.C. to Ottawa every day.
There is 1 airport near Ottawa: Ottawa (YOW)

  • How far is Washington, D.C. to Ottawa by plane?

    The straight-line distance from Washington, D.C. to Ottawa is 454.6 mi. 1h 32m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Washington, D.C. to Ottawa Airport?

    Prices for flights from Washington, D.C. to Ottawa Airport were last updated today.

  • How many operators does momondo search for flights from Washington, D.C. to Ottawa Airport?

  • How old do you have to be to fly from Washington, D.C. to Ottawa Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington, D.C. to Ottawa Airport.

  • What documentation or ID do you need to fly to Ottawa Airport?

    The required travel and health documents for your Ottawa Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Ottawa Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from Washington, D.C. to Ottawa?

  • What is the most popular airline from Washington, D.C. to Ottawa?


Best airlines flying from Washington, D.C. to Ottawa

Compare and see reviews for airlines that fly from Washington, D.C. to Ottawa with momondo
Airline
Rating
Free Cancellation
Price
Air CanadaPriceFrom $155Free CancellationRating
7.0
9,195 reviews
Search Air Canada flights
United AirlinesPriceFrom $176Free CancellationRating
7.4
8,685 reviews
Search United Airlines flights
Porter AirlinesPriceFrom $188Free CancellationRating
8.0
285 reviews
Search Porter Airlines flights
Air TransatPriceFrom $347Free CancellationRating
7.8
385 reviews
Search Air Transat flights
  • United Airlines Flights From Washington, D.C. to Ottawa

    The lowest priced United Airlines flight from Washington, D.C. to Ottawa from the last 72 hours was $176. Generally, United Airlines has 28 flights on this route every week with an average price of $641. United Airlines is rated 7.4/10 by our users.

  • Air Canada Flights From Washington, D.C. to Ottawa

    Across 9,195 Air Canada reviews on momondo, the average score is 7.0/10. Air Canada flies from Washington, D.C. to Ottawa about 24 times each week, with ticket deals ranging from $155 to $395. Price data is based on momondo searches in the last 72 hours.


Traveling to a place near Ottawa?

Book flights to Ottawa if you plan to visit one of these locations
Gatineau
Brockville
Calabogie
Pembroke
Smiths Falls
Prescott
Winchester
Wakefield

Why use momondo?

Why should I use momondo to find a flight deal from Washington, D.C. to Ottawa?

It is quick and easy to find Washington, D.C. to Ottawa flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Ottawa that suits you.

Can I find flights from Washington, D.C. to Ottawa with flexible booking policies on momondo?

All flight searches from Washington, D.C. to Ottawa on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Washington, D.C. to Ottawa?

Once you have performed a search for Washington, D.C. to Ottawa flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Washington, D.C. to Ottawa right now. Can momondo alert me if prices change?

Price alerts on flights to Ottawa from Washington, D.C. are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.


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