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Cheap flights from Washington, D.C. to Ottawa from C$ 178

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 20/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult

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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.
Porter Airlines Logo
11:40 a.m. - 4:44 p.m.
IAD
-
YOW
5h 04m
1 stop
Porter Airlines Logo
6:50 a.m. - 10:54 a.m.
YOW
-
IAD
4h 04m
1 stop
C$ 384Porter Airlines
Mon, 27 Apr - Thu, 30 Apr
Multiple Airlines Logo
12:18 p.m. - 11:58 p.m.
IAD
-
YOW
11h 40m
1 stop
Multiple Airlines Logo
5:40 a.m. - 5:14 p.m.
YOW
-
IAD
11h 34m
1 stop
C$ 385Multiple Airlines
Thu, 9 Apr - Sun, 12 Apr
Porter Airlines Logo
11:40 a.m. - 5:04 p.m.
IAD
-
YOW
5h 24m
1 stop
Porter Airlines Logo
6:45 a.m. - 10:54 a.m.
YOW
-
IAD
4h 09m
1 stop
C$ 388Porter Airlines
Thu, 9 Apr - Wed, 15 Apr
Porter Airlines Logo
11:40 a.m. - 4:44 p.m.
IAD
-
YOW
5h 04m
1 stop
Porter Airlines Logo
6:45 a.m. - 10:54 a.m.
YOW
-
IAD
4h 09m
1 stop
C$ 392Porter Airlines
Mon, 13 Apr - Mon, 20 Apr
Multiple Airlines Logo
5:53 p.m. - 12:35 p.m.
BWI
-
YOW
18h 42m
2 stops
Multiple Airlines Logo
7:00 a.m. - 9:17 a.m.
YOW
-
BWI
26h 17m
1 stop
C$ 393Multiple Airlines
Sat, 18 Apr - Wed, 22 Apr
Multiple Airlines Logo
8:47 a.m. - 11:58 p.m.
IAD
-
YOW
15h 11m
1 stop
Multiple Airlines Logo
9:00 a.m. - 10:54 a.m.
YOW
-
IAD
25h 54m
1 stop
C$ 396Multiple Airlines
Sun, 5 Apr - Mon, 13 Apr
Air Canada Logo
12:55 p.m. - 2:27 p.m.
DCA
-
YOW
1h 32mdirect
Air Canada Logo
10:25 a.m. - 12:01 p.m.
YOW
-
DCA
1h 36mdirect
C$ 410Air Canada
Thu, 9 Apr - Sun, 12 Apr
Air Canada Logo
12:55 p.m. - 2:27 p.m.
DCA
-
YOW
1h 32mdirect
Air Canada Logo
10:25 a.m. - 12:01 p.m.
YOW
-
DCA
1h 36mdirect
C$ 411Air Canada
Thu, 9 Apr - Sun, 12 Apr
Air Canada Logo
12:55 p.m. - 2:27 p.m.
DCA
-
YOW
1h 32mdirect
Air Canada Logo
5:45 a.m. - 10:19 a.m.
YOW
-
DCA
4h 34m
1 stop
C$ 418Air Canada
Thu, 9 Apr - Sun, 12 Apr
Air Canada Logo
12:55 p.m. - 2:27 p.m.
DCA
-
YOW
1h 32mdirect
Air Canada Logo
5:45 a.m. - 10:19 a.m.
YOW
-
DCA
4h 34m
1 stop
C$ 419Air Canada
Thu, 9 Apr - Sun, 12 Apr

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

Our best Porter Airlines deals on Washington, D.C. to Ottawa flight tickets
Porter Airlines
27 Apr
IAD11:40 a.m.Washington, D.C. Dulles Intl
5h 04m
1 stop
YOW4:44 p.m.Ottawa
30 Apr
YOW6:50 a.m.Ottawa
4h 04m
1 stop
IAD10:54 a.m.Washington, D.C. Dulles Intl
C$ 384
Porter Airlines
9 Apr
IAD11:40 a.m.Washington, D.C. Dulles Intl
5h 24m
1 stop
YOW5:04 p.m.Ottawa
15 Apr
YOW6:45 a.m.Ottawa
4h 09m
1 stop
IAD10:54 a.m.Washington, D.C. Dulles Intl
C$ 388
Porter Airlines
13 Apr
IAD11:40 a.m.Washington, D.C. Dulles Intl
5h 04m
1 stop
YOW4:44 p.m.Ottawa
20 Apr
YOW6:45 a.m.Ottawa
4h 09m
1 stop
IAD10:54 a.m.Washington, D.C. Dulles Intl
C$ 392

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

Our best Air Canada deals on Washington, D.C. to Ottawa flight tickets
Air Canada
9 Apr
DCA12:55 p.m.Washington, D.C. Reagan-National
1h 32m
YOW2:27 p.m.Ottawa
12 Apr
YOW10:25 a.m.Ottawa
1h 36m
DCA12:01 p.m.Washington, D.C. Reagan-National
C$ 410
Air Canada
9 Apr
DCA12:55 p.m.Washington, D.C. Reagan-National
1h 32m
YOW2:27 p.m.Ottawa
12 Apr
YOW10:25 a.m.Ottawa
1h 36m
DCA12:01 p.m.Washington, D.C. Reagan-National
C$ 411
Air Canada
9 Apr
DCA12:55 p.m.Washington, D.C. Reagan-National
1h 32m
YOW2:27 p.m.Ottawa
12 Apr
YOW5:45 a.m.Ottawa
4h 34m
1 stop
DCA10:19 a.m.Washington, D.C. Reagan-National
C$ 418

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 96,600 searches. Data last updated 28 February 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

Mon 27/4

11:40 a.m.-4:44 p.m.

1 stop5h 04m

Ottawa

Thu 30/4

6:50 a.m.-10:54 a.m.

1 stop4h 04m

C$ 384

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Thu 9/4

12:18 p.m.-11:58 p.m.

1 stop11h 40m

Ottawa

Sun 12/4

5:40 a.m.-5:14 p.m.

1 stop11h 34m

C$ 385

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Thu 9/4

11:40 a.m.-5:04 p.m.

1 stop5h 24m

Ottawa

Wed 15/4

6:45 a.m.-10:54 a.m.

1 stop4h 09m

C$ 388

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Mon 13/4

11:40 a.m.-4:44 p.m.

1 stop5h 04m

Ottawa

Mon 20/4

6:45 a.m.-10:54 a.m.

1 stop4h 09m

C$ 392

BaltimoreOttawa

BWI - YOW

BWIYOW

Baltimore/Washington

Sat 18/4

5:53 p.m.-12:35 p.m.

2 stops18h 42m

Ottawa

Wed 22/4

7:00 a.m.-9:17 a.m.

1 stop26h 17m

C$ 393

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Sun 5/4

8:47 a.m.-11:58 p.m.

1 stop15h 11m

Ottawa

Mon 13/4

9:00 a.m.-10:54 a.m.

1 stop25h 54m

C$ 396

Washington, D.C.Ottawa

DCA - YOW

DCAYOW

Washington, D.C. Reagan-National

Thu 9/4

12:55 p.m.-2:27 p.m.

Nonstop1h 32m

Ottawa

Sun 12/4

10:25 a.m.-12:01 p.m.

Nonstop1h 36m

C$ 410

Washington, D.C.Ottawa

DCA - YOW

DCAYOW

Washington, D.C. Reagan-National

Thu 9/4

12:55 p.m.-2:27 p.m.

Nonstop1h 32m

Ottawa

Sun 12/4

10:25 a.m.-12:01 p.m.

Nonstop1h 36m

C$ 411

Washington, D.C.Ottawa

DCA - YOW

DCAYOW

Washington, D.C. Reagan-National

Thu 9/4

12:55 p.m.-2:27 p.m.

Nonstop1h 32m

Ottawa

Sun 12/4

5:45 a.m.-10:19 a.m.

1 stop4h 34m

C$ 418

Washington, D.C.Ottawa

DCA - YOW

DCAYOW

Washington, D.C. Reagan-National

Thu 9/4

12:55 p.m.-2:27 p.m.

Nonstop1h 32m

Ottawa

Sun 12/4

5:45 a.m.-10:19 a.m.

1 stop4h 34m

C$ 419

Flights are sorted by cheapest round-trip flights 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?

The month of October is, on average, the cheapest month to fly to Ottawa from Washington, D.C., with most prices found around C$ 492. If you aren’t able to travel to Ottawa during the month of October, then flying in April is also cheap. Prices for this month can be found on momondo for an average of C$ 512.

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

Our data shows that Saturday is the least expensive day to fly to Ottawa. Tickets to fly out on this day can be as low as C$ 177. Flights from Washington, D.C. to Ottawa on a Wednesday will generally be more expensive and average around C$ 794. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

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

Our most recent data shows that the best time of day to fly to Ottawa is in the morning. Flights from Washington, D.C. to Ottawa during this time can be as low as C$ 440. In the afternoon is when there is more demand to fly to Ottawa, so prices are often more expensive at around C$ 827 per ticket.

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 3 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 16% 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

Fastest flight time

1h 31m

Direct flights

Every day

Airports in Ottawa

1 airport
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?

    There are 731.6 km between Washington, D.C. and Ottawa. 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 refresh daily.

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, 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 travel and health documents required for your trip to Ottawa Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Ottawa Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • 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?

Travelling to a place near Ottawa?

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

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Washington, D.C. to Ottawa. momondo saves you time and could save you money on your trip.

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

momondo does allow users to show only those flights to Ottawa from Washington, D.C. which offer a flexible booking policy as well as other useful filters and features.

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

momondo helps you find the best flight between Washington, D.C. and Ottawa by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Yes momondo offers price alerts on flights to Ottawa from Washington, D.C.. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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