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Cheap flights from Washington, D.C. to Ottawa from $165

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 2/21. 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
2:58 pm - 12:39 am
BWI
-
YOW
33h 41m
2 stops
Multiple Airlines Logo
4:15 pm - 9:06 am
YOW
-
BWI
16h 51m
1 stop
$282Multiple Airlines
Mon, Mar 2 - Mon, Mar 9
Multiple Airlines Logo
9:04 pm - 12:25 am
BWI
-
YOW
27h 21m
1 stop
Multiple Airlines Logo
4:15 pm - 9:06 am
YOW
-
BWI
16h 51m
1 stop
$296Multiple Airlines
Mon, Mar 2 - Mon, Mar 9
Multiple Airlines Logo
8:15 am - 12:39 am
IAD
-
YOW
40h 24m
2 stops
Multiple Airlines Logo
6:45 am - 10:24 am
YOW
-
IAD
3h 39m
1 stop
$313Multiple Airlines
Mon, Mar 2 - Mon, Mar 9
Multiple Airlines Logo
1:00 pm - 12:25 am
BWI
-
YOW
11h 25m
1 stop
Multiple Airlines Logo
4:15 pm - 8:31 am
YOW
-
BWI
16h 16m
1 stop
$316Multiple Airlines
Tue, Feb 3 - Fri, Feb 6
Multiple Airlines Logo
8:15 am - 5:17 pm
IAD
-
YOW
9h 02m
1 stop
Multiple Airlines Logo
6:45 am - 10:24 am
YOW
-
IAD
3h 39m
1 stop
$319Multiple Airlines
Thu, Mar 12 - Mon, Mar 16
Porter Airlines Logo
11:40 am - 3:04 pm
IAD
-
YOW
3h 24m
1 stop
Porter Airlines Logo
1:20 pm - 5:14 pm
YOW
-
IAD
3h 54m
1 stop
$326Porter Airlines
Thu, Apr 16 - Sun, Apr 19
Porter Airlines Logo
1:50 pm - 5:39 pm
IAD
-
YOW
3h 49m
1 stop
Porter Airlines Logo
7:00 am - 10:22 am
YOW
-
IAD
3h 22m
1 stop
$344Porter Airlines
Sat, Feb 14 - Wed, Feb 18
Air Canada Logo
6:00 am - 9:41 am
DCA
-
YOW
3h 41m
1 stop
Air Canada Logo
10:30 am - 12:19 pm
YOW
-
DCA
1h 49mnonstop
$372Air Canada
Fri, Mar 6 - Tue, Mar 10
Air Canada Logo
11:05 am - 4:23 pm
DCA
-
YOW
5h 18m
1 stop
Air Canada Logo
10:50 am - 3:31 pm
YOW
-
DCA
4h 41m
1 stop
$377Air Canada
Fri, Mar 6 - Tue, Mar 10
United Airlines Logo
10:30 am - 5:07 pm
DCA
-
YOW
6h 37m
1 stop
United Airlines Logo
3:15 pm - 9:35 pm
YOW
-
DCA
6h 20m
1 stop
$439United Airlines
Mon, Mar 2 - Mon, Mar 9

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

Our best United Airlines deals on Washington, D.C. to Ottawa flight tickets
United Airlines
Feb 23
IAD5:11 pmWashington, D.C. Dulles Intl
1h 44m
YOW6:55 pmOttawa
Feb 26
YOW7:30 pmOttawa
1h 53m
IAD9:23 pmWashington, D.C. Dulles Intl
$424
United Airlines
Mar 12
IAD8:30 amWashington, D.C. Dulles Intl
12h 48m
1 stop
YOW9:18 pmOttawa
Mar 16
YOW9:45 amOttawa
1h 59m
IAD11:44 amWashington, D.C. Dulles Intl
$434
United Airlines
Mar 2
DCA10:30 amWashington, D.C. Reagan-National
6h 37m
1 stop
YOW5:07 pmOttawa
Mar 9
YOW3:15 pmOttawa
6h 20m
1 stop
DCA9:35 pmWashington, D.C. Reagan-National
$439

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 16
IAD11:40 amWashington, D.C. Dulles Intl
3h 24m
1 stop
YOW3:04 pmOttawa
Apr 19
YOW1:20 pmOttawa
3h 54m
1 stop
IAD5:14 pmWashington, D.C. Dulles Intl
$326
Porter Airlines
Feb 14
IAD1:50 pmWashington, D.C. Dulles Intl
3h 49m
1 stop
YOW5:39 pmOttawa
Feb 18
YOW7:00 amOttawa
3h 22m
1 stop
IAD10:22 amWashington, D.C. Dulles Intl
$344
Porter Airlines
Feb 25
IAD11:40 amWashington, D.C. Dulles Intl
4h 04m
1 stop
YOW3:44 pmOttawa
Feb 27
YOW12:10 pmOttawa
5h 04m
1 stop
IAD5:14 pmWashington, D.C. Dulles Intl
$352

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 January 22, 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

BaltimoreOttawa

BWI - YOW

BWIYOW

Baltimore/Washington

Mon 3/2

2:58 pm-12:39 am

2 stops33h 41m

Ottawa

Mon 3/9

4:15 pm-9:06 am

1 stop16h 51m

$282

BaltimoreOttawa

BWI - YOW

BWIYOW

Baltimore/Washington

Mon 3/2

9:04 pm-12:25 am

1 stop27h 21m

Ottawa

Mon 3/9

4:15 pm-9:06 am

1 stop16h 51m

$296

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Mon 3/2

8:15 am-12:39 am

2 stops40h 24m

Ottawa

Mon 3/9

6:45 am-10:24 am

1 stop3h 39m

$313

BaltimoreOttawa

BWI - YOW

BWIYOW

Baltimore/Washington

Tue 2/3

1:00 pm-12:25 am

1 stop11h 25m

Ottawa

Fri 2/6

4:15 pm-8:31 am

1 stop16h 16m

$316

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Thu 3/12

8:15 am-5:17 pm

1 stop9h 02m

Ottawa

Mon 3/16

6:45 am-10:24 am

1 stop3h 39m

$319

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Thu 4/16

11:40 am-3:04 pm

1 stop3h 24m

Ottawa

Sun 4/19

1:20 pm-5:14 pm

1 stop3h 54m

$326

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Sat 2/14

1:50 pm-5:39 pm

1 stop3h 49m

Ottawa

Wed 2/18

7:00 am-10:22 am

1 stop3h 22m

$344

Washington, D.C.Ottawa

DCA - YOW

DCAYOW

Washington, D.C. Reagan-National

Fri 3/6

6:00 am-9:41 am

1 stop3h 41m

Ottawa

Tue 3/10

10:30 am-12:19 pm

Nonstop1h 49m

$372

Washington, D.C.Ottawa

DCA - YOW

DCAYOW

Washington, D.C. Reagan-National

Fri 3/6

11:05 am-4:23 pm

1 stop5h 18m

Ottawa

Tue 3/10

10:50 am-3:31 pm

1 stop4h 41m

$377

Washington, D.C.Ottawa

DCA - YOW

DCAYOW

Washington, D.C. Reagan-National

Mon 3/2

10:30 am-5:07 pm

1 stop6h 37m

Ottawa

Mon 3/9

3:15 pm-9:35 pm

1 stop6h 20m

$439

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 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 $442. Be sure to avoid booking your departure on a Thursday as prices are generally higher than usual. According to our data, the average ticket price to Ottawa on Thursday is $511.

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 $456. 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 evening when prices are $678 on average. Flights to Ottawa from Washington, D.C. in the evening 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

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 60% 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 January 2026, prices for Washington, D.C. to Ottawa flights are approximately 22% 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

$176

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 $176. The best round-trip flight deal from Washington, D.C. to Ottawa found on momondo in the last 72 hours is $248.
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 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 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 $164Free CancellationRating
7.1
10,648 reviews
Search Air Canada flights
Porter AirlinesPriceFrom $169Free CancellationRating
7.9
412 reviews
Search Porter Airlines flights
United AirlinesPriceFrom $189Free CancellationRating
7.4
9,192 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 26 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 10,648 Air Canada reviews on momondo, the average score is 7.1/10. Air Canada flies from Washington, D.C. to Ottawa about 26 times each week, with ticket deals ranging from $164 to $468. 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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