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Cheap flights from Washington, D.C. to Ottawa from $151

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 3/4. 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

Enter your travel dates to find the best prices.
Multiple Airlines Logo
1:45 pm - 5:29 pm
IAD
-
YOW
3h 44m
1 stop
Multiple Airlines Logo
2:50 pm - 8:54 pm
YOW
-
IAD
6h 04m
1 stop
$309Multiple Airlines
Sat, Mar 21 - Mon, Mar 23
Porter Airlines Logo
11:40 am - 5:29 pm
IAD
-
YOW
5h 49m
1 stop
Porter Airlines Logo
12:10 pm - 5:14 pm
YOW
-
IAD
5h 04m
1 stop
$317Porter Airlines
Tue, Apr 14 - Thu, Apr 16
Multiple Airlines Logo
4:05 pm - 5:25 pm
BWI
-
YOW
25h 20m
1 stop
Multiple Airlines Logo
4:15 pm - 8:43 am
YOW
-
BWI
16h 28m
1 stop
$322Multiple Airlines
Tue, Apr 14 - Fri, Apr 17
Porter Airlines Logo
6:30 pm - 10:29 pm
IAD
-
YOW
3h 59m
1 stop
Porter Airlines Logo
11:00 am - 5:14 pm
YOW
-
IAD
6h 14m
1 stop
$324Porter Airlines
Fri, Mar 13 - Sun, Mar 22
Multiple Airlines Logo
8:30 pm - 5:13 pm
IAD
-
YOW
20h 43m
1 stop
Multiple Airlines Logo
8:40 am - 12:29 pm
YOW
-
IAD
3h 49m
1 stop
$328Multiple Airlines
Mon, Apr 13 - Sat, Apr 18
Porter Airlines Logo
6:30 pm - 10:29 pm
IAD
-
YOW
3h 59m
1 stop
Porter Airlines Logo
1:20 pm - 5:14 pm
YOW
-
IAD
3h 54m
1 stop
$332Porter Airlines
Thu, Apr 16 - Sun, Apr 19
Air Canada Logo
12:55 pm - 2:27 pm
DCA
-
YOW
1h 32mnonstop
Air Canada Logo
10:25 am - 12:01 pm
YOW
-
DCA
1h 36mnonstop
$356Air Canada
Fri, Apr 17 - Sun, Apr 19
Air Canada Logo
6:00 am - 9:38 am
DCA
-
YOW
3h 38m
1 stop
Air Canada Logo
10:30 am - 12:19 pm
YOW
-
DCA
1h 49mnonstop
$365Air Canada
Sun, Mar 1 - Thu, Mar 5
Air Canada Logo
9:40 am - 3:19 pm
DCA
-
YOW
5h 39m
1 stop
Air Canada Logo
10:25 am - 12:01 pm
YOW
-
DCA
1h 36mnonstop
$370Air Canada
Thu, Apr 16 - Sun, Apr 19
Air Canada Logo
6:00 am - 9:41 am
DCA
-
YOW
3h 41m
1 stop
Air Canada Logo
5:45 am - 10:21 am
YOW
-
DCA
4h 36m
1 stop
$373Air Canada
Fri, Mar 20 - Sun, Mar 22

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

Our best Porter Airlines deals on Washington, D.C. to Ottawa flight tickets
Porter Airlines
Apr 10
IAD11:40 amWashington, D.C. Dulles Intl
5h 49m
1 stop
YOW5:29 pmOttawa
Apr 13
YOW1:20 pmOttawa
3h 54m
1 stop
IAD5:14 pmWashington, D.C. Dulles Intl
$308
Porter Airlines
Feb 26
IAD11:40 amWashington, D.C. Dulles Intl
4h 04m
1 stop
YOW3:44 pmOttawa
Mar 2
YOW6:45 amOttawa
3h 39m
1 stop
IAD10:24 amWashington, D.C. Dulles Intl
$313
Porter Airlines
Apr 14
IAD11:40 amWashington, D.C. Dulles Intl
5h 49m
1 stop
YOW5:29 pmOttawa
Apr 16
YOW12:10 pmOttawa
5h 04m
1 stop
IAD5:14 pmWashington, D.C. Dulles Intl
$317

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

Our best Air Canada deals on Washington, D.C. to Ottawa flight tickets
Air Canada
Apr 10
DCA12:55 pmWashington, D.C. Reagan-National
1h 32m
YOW2:27 pmOttawa
Apr 13
YOW10:25 amOttawa
1h 36m
DCA12:01 pmWashington, D.C. Reagan-National
$356
Air Canada
Mar 21
IAD12:43 pmWashington, D.C. Dulles Intl
1h 44m
YOW2:27 pmOttawa
Mar 23
YOW2:15 pmOttawa
1h 56m
IAD4:11 pmWashington, D.C. Dulles Intl
$357
Air Canada
Mar 1
DCA6:00 amWashington, D.C. Reagan-National
3h 38m
1 stop
YOW9:38 amOttawa
Mar 5
YOW10:30 amOttawa
1h 49m
DCA12:19 pmWashington, D.C. Reagan-National
$365

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. to Ottawa that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated February 4, 2026.
Use the filters below to find and compare flights from Washington, D.C. to Ottawa that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Sat 3/21

1:45 pm-5:29 pm

1 stop3h 44m

Ottawa

Mon 3/23

2:50 pm-8:54 pm

1 stop6h 04m

$309

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Tue 4/14

11:40 am-5:29 pm

1 stop5h 49m

Ottawa

Thu 4/16

12:10 pm-5:14 pm

1 stop5h 04m

$317

BaltimoreOttawa

BWI - YOW

BWIYOW

Baltimore/Washington

Tue 4/14

4:05 pm-5:25 pm

1 stop25h 20m

Ottawa

Fri 4/17

4:15 pm-8:43 am

1 stop16h 28m

$322

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Fri 3/13

6:30 pm-10:29 pm

1 stop3h 59m

Ottawa

Sun 3/22

11:00 am-5:14 pm

1 stop6h 14m

$324

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Mon 4/13

8:30 pm-5:13 pm

1 stop20h 43m

Ottawa

Sat 4/18

8:40 am-12:29 pm

1 stop3h 49m

$328

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Thu 4/16

6:30 pm-10:29 pm

1 stop3h 59m

Ottawa

Sun 4/19

1:20 pm-5:14 pm

1 stop3h 54m

$332

Washington, D.C.Ottawa

DCA - YOW

DCAYOW

Washington, D.C. Reagan-National

Fri 4/17

12:55 pm-2:27 pm

Nonstop1h 32m

Ottawa

Sun 4/19

10:25 am-12:01 pm

Nonstop1h 36m

$356

Washington, D.C.Ottawa

DCA - YOW

DCAYOW

Washington, D.C. Reagan-National

Sun 3/1

6:00 am-9:38 am

1 stop3h 38m

Ottawa

Thu 3/5

10:30 am-12:19 pm

Nonstop1h 49m

$365

Washington, D.C.Ottawa

DCA - YOW

DCAYOW

Washington, D.C. Reagan-National

Thu 4/16

9:40 am-3:19 pm

1 stop5h 39m

Ottawa

Sun 4/19

10:25 am-12:01 pm

Nonstop1h 36m

$370

Washington, D.C.Ottawa

DCA - YOW

DCAYOW

Washington, D.C. Reagan-National

Fri 3/20

6:00 am-9:41 am

1 stop3h 41m

Ottawa

Sun 3/22

5:45 am-10:21 am

1 stop4h 36m

$373

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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 $178. The month of April is another great option to travel to Ottawa, with average flight prices from Washington, D.C. averaging around $344.

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 Saturday. Travelers who choose to depart for Ottawa on a Saturday will often find tickets for as low as $436. Be sure to avoid booking your departure on a Monday as prices are generally higher than usual. According to our data, the average ticket price to Ottawa on Monday is $503.

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

In the morning is the cheapest time of day to fly from Washington, D.C. to Ottawa when you can find flight prices for as low as $464. Flying to Ottawa in the morning 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 $637 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. Dulles Intl to Ottawa for the best Washington, D.C. - Ottawa flight prices

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.

Can stopping save me money on Washington, D.C. to Ottawa flights?

You could potentially save up to 29% on your flight if you consider stops on a Washington, D.C. to Ottawa flight.

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

As of February 2026, prices for Washington, D.C. to Ottawa flights are approximately 23% cheaper 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

$186

Fastest flight time

1h 31m

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 $186. The best round-trip flight deal from Washington, D.C. to Ottawa found on momondo in the last 72 hours is $360.
The fastest flight from Washington, D.C. to Ottawa takes 1h 31m
Direct flights go from Washington, D.C. to Ottawa every day.
There is 1 airport in Ottawa. From Washington, D.C. there are direct flights to Ottawa (YOW).
Search flight deals

  • 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 31m 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
Porter AirlinesPriceFrom $169Free CancellationRating
7.9
412 reviews
Search Porter Airlines flights
Air CanadaPriceFrom $171Free CancellationRating
7.1
10,684 reviews
Search Air Canada flights
United AirlinesPriceFrom $189Free CancellationRating
7.4
9,236 reviews
Search United Airlines 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 $189. Generally, United Airlines has 27 flights on this route every week with an average price of $490. United Airlines is rated 7.4/10 by our users.

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

    Across 10,684 Air Canada reviews on momondo, the average score is 7.1/10. Air Canada flies from Washington, D.C. to Ottawa about 27 times each week, with ticket deals ranging from $171 to $467. 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
Pembroke
Calabogie
Brockville
Petawawa
Smiths Falls
Perth
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.

An easier way to manage your Ottawa trip

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