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Cheap flights from Washington, D.C. Dulles Intl Airport to Ottawa from C$ 212

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. Dulles Intl Airport to Ottawa departing on 17/8. 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
1 adult, Economy, 0 bags

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

Cheap round-trip flights

Enter your travel dates to find the best prices.
Porter Airlines Logo
3:50 p.m. - 9:44 p.m.
IAD
-
YOW
5h 54m
1 stop
Porter Airlines Logo
10:40 a.m. - 3:10 p.m.
YOW
-
IAD
4h 30m
1 stop
C$ 448Porter Airlines
Thu, 13 Aug - Mon, 17 Aug
Porter Airlines Logo
11:25 a.m. - 5:54 p.m.
IAD
-
YOW
6h 29m
1 stop
Porter Airlines Logo
10:40 a.m. - 3:10 p.m.
YOW
-
IAD
4h 30m
1 stop
C$ 451Porter Airlines
Fri, 21 Aug - Mon, 24 Aug
Porter Airlines Logo
11:25 a.m. - 5:54 p.m.
IAD
-
YOW
6h 29m
1 stop
Porter Airlines Logo
10:40 a.m. - 3:10 p.m.
YOW
-
IAD
4h 30m
1 stop
C$ 453Porter Airlines
Fri, 14 Aug - Mon, 17 Aug
Porter Airlines Logo
3:50 p.m. - 9:42 p.m.
IAD
-
YOW
5h 52m
1 stop
Porter Airlines Logo
10:40 a.m. - 3:10 p.m.
YOW
-
IAD
4h 30m
1 stop
C$ 485Porter Airlines
Thu, 8 Oct - Mon, 12 Oct
Porter Airlines Logo
3:50 p.m. - 8:02 p.m.
IAD
-
YOW
4h 12m
1 stop
Porter Airlines Logo
10:40 a.m. - 3:10 p.m.
YOW
-
IAD
4h 30m
1 stop
C$ 488Porter Airlines
Fri, 25 Sep - Mon, 28 Sep
Multiple Airlines Logo
5:20 p.m. - 9:52 p.m.
IAD
-
YOW
4h 32m
1 stop
Multiple Airlines Logo
10:40 a.m. - 3:10 p.m.
YOW
-
IAD
4h 30m
1 stop
C$ 494Multiple Airlines
Thu, 13 Aug - Mon, 17 Aug
Porter Airlines Logo
3:50 p.m. - 7:14 p.m.
IAD
-
YOW
3h 24m
1 stop
Porter Airlines Logo
10:40 a.m. - 3:10 p.m.
YOW
-
IAD
4h 30m
1 stop
C$ 498Porter Airlines
Sat, 15 Aug - Mon, 17 Aug
Porter Airlines Logo
3:50 p.m. - 9:44 p.m.
IAD
-
YOW
5h 54m
1 stop
Porter Airlines Logo
10:40 a.m. - 3:10 p.m.
YOW
-
IAD
4h 30m
1 stop
C$ 513Porter Airlines
Thu, 13 Aug - Mon, 17 Aug
Porter Airlines Logo
3:50 p.m. - 9:44 p.m.
IAD
-
YOW
5h 54m
1 stop
Porter Airlines Logo
10:40 a.m. - 3:10 p.m.
YOW
-
IAD
4h 30m
1 stop
C$ 515Porter Airlines
Wed, 19 Aug - Sat, 22 Aug
Porter Airlines Logo
3:50 p.m. - 8:02 p.m.
IAD
-
YOW
4h 12m
1 stop
Porter Airlines Logo
10:40 a.m. - 3:10 p.m.
YOW
-
IAD
4h 30m
1 stop
C$ 519Porter Airlines
Thu, 3 Sep - Tue, 8 Sep

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Air Canada flights from Washington, D.C. Dulles Intl Airport to Ottawa

Our best Air Canada deals on Washington, D.C. Dulles Intl Airport to Ottawa flight tickets
Air Canada
8 Sep
IAD5:20 p.m.Washington, D.C. Dulles Intl
4h 32m
1 stop
YOW9:52 p.m.Ottawa
12 Sep
YOW6:00 a.m.Ottawa
1h 43m
IAD7:43 a.m.Washington, D.C. Dulles Intl
C$ 563
Air Canada
18 Sep
IAD5:20 p.m.Washington, D.C. Dulles Intl
4h 32m
1 stop
YOW9:52 p.m.Ottawa
2 Oct
YOW12:15 p.m.Ottawa
4h 23m
1 stop
IAD4:38 p.m.Washington, D.C. Dulles Intl
C$ 611
Air Canada
18 Sep
IAD5:20 p.m.Washington, D.C. Dulles Intl
4h 32m
1 stop
YOW9:52 p.m.Ottawa
2 Oct
YOW12:15 p.m.Ottawa
4h 23m
1 stop
IAD4:38 p.m.Washington, D.C. Dulles Intl
C$ 612

Porter Airlines flights from Washington, D.C. Dulles Intl Airport to Ottawa

Our best Porter Airlines deals on Washington, D.C. Dulles Intl Airport to Ottawa flight tickets
Porter Airlines
13 Aug
IAD3:50 p.m.Washington, D.C. Dulles Intl
5h 54m
1 stop
YOW9:44 p.m.Ottawa
17 Aug
YOW10:40 a.m.Ottawa
4h 30m
1 stop
IAD3:10 p.m.Washington, D.C. Dulles Intl
C$ 448
Porter Airlines
21 Aug
IAD11:25 a.m.Washington, D.C. Dulles Intl
6h 29m
1 stop
YOW5:54 p.m.Ottawa
24 Aug
YOW10:40 a.m.Ottawa
4h 30m
1 stop
IAD3:10 p.m.Washington, D.C. Dulles Intl
C$ 451
Porter Airlines
14 Aug
IAD11:25 a.m.Washington, D.C. Dulles Intl
6h 29m
1 stop
YOW5:54 p.m.Ottawa
17 Aug
YOW10:40 a.m.Ottawa
4h 30m
1 stop
IAD3:10 p.m.Washington, D.C. Dulles Intl
C$ 453

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. Dulles Intl Airport 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 July 2026.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Ottawa that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Thu 13/8

3:50 p.m.-9:44 p.m.

1 stop5h 54m

Ottawa

Mon 17/8

10:40 a.m.-3:10 p.m.

1 stop4h 30m

C$ 448

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Fri 21/8

11:25 a.m.-5:54 p.m.

1 stop6h 29m

Ottawa

Mon 24/8

10:40 a.m.-3:10 p.m.

1 stop4h 30m

C$ 451

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Fri 14/8

11:25 a.m.-5:54 p.m.

1 stop6h 29m

Ottawa

Mon 17/8

10:40 a.m.-3:10 p.m.

1 stop4h 30m

C$ 453

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Thu 8/10

3:50 p.m.-9:42 p.m.

1 stop5h 52m

Ottawa

Mon 12/10

10:40 a.m.-3:10 p.m.

1 stop4h 30m

C$ 485

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Fri 25/9

3:50 p.m.-8:02 p.m.

1 stop4h 12m

Ottawa

Mon 28/9

10:40 a.m.-3:10 p.m.

1 stop4h 30m

C$ 488

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Thu 13/8

5:20 p.m.-9:52 p.m.

1 stop4h 32m

Ottawa

Mon 17/8

10:40 a.m.-3:10 p.m.

1 stop4h 30m

C$ 494
Quickest round-trip

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Sat 15/8

3:50 p.m.-7:14 p.m.

1 stop3h 24m

Ottawa

Mon 17/8

10:40 a.m.-3:10 p.m.

1 stop4h 30m

C$ 498

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Thu 13/8

3:50 p.m.-9:44 p.m.

1 stop5h 54m

Ottawa

Mon 17/8

10:40 a.m.-3:10 p.m.

1 stop4h 30m

C$ 513

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Wed 19/8

3:50 p.m.-9:44 p.m.

1 stop5h 54m

Ottawa

Sat 22/8

10:40 a.m.-3:10 p.m.

1 stop4h 30m

C$ 515

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Thu 3/9

3:50 p.m.-8:02 p.m.

1 stop4h 12m

Ottawa

Tue 8/9

10:40 a.m.-3:10 p.m.

1 stop4h 30m

C$ 519

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. Dulles Intl Airport 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. Dulles Intl Airport and Ottawa?

Prices are currently low for flights on this route.

Typical prices usually range from C$ 629 to C$ 739.
The lowest price recently found on this route was C$ 448.

What is the cheapest month to fly to Ottawa?

The month of December is, on average, the cheapest month to fly to Ottawa from Washington, D.C. Dulles Intl Airport, with most prices found around C$ 505. If you aren’t able to travel to Ottawa during the month of December, then flying in January is also cheap. Prices for this month can be found on momondo for an average of C$ 508.

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$ 307. Flights from Washington, D.C. Dulles Intl Airport to Ottawa on a Tuesday will generally be more expensive and average around C$ 894. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

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

Fly from Washington, D.C. Dulles Intl to Ottawa for the best Washington, D.C. Dulles Intl - Ottawa flight prices

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

There are 2 cabin classes available to choose from on Washington, D.C. Dulles Intl Airport 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. Dulles Intl Airport to Ottawa flights?

You could potentially save up to 7% on your flight if you consider stops on a Washington, D.C. Dulles Intl Airport to Ottawa flight.

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

As of July 2026, prices for Washington, D.C. Dulles Intl Airport to Ottawa flights are approximately 49% more expensive when compared to flights at the same time last year.

When to book flights from Washington, D.C. Dulles Intl Airport to Ottawa

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. Dulles Intl Airport 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. Dulles Intl Airport to Ottawa (IAD to YOW) flight deals and tips

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

Best price found

C$ 329

Fastest flight time

1h 41m

Direct flights

Every day

Airports in Ottawa

1 airport
The best one-way flight to Ottawa from Washington, D.C. Dulles Intl Airport in the past 72 hours is C$ 329. The best round-trip flight deal from Washington, D.C. Dulles Intl Airport to Ottawa found on momondo in the last 72 hours is C$ 1,598.
The fastest flight from Washington, D.C. Dulles Intl Airport to Ottawa takes 1h 41m
Direct flights go from Washington, D.C. Dulles Intl Airport to Ottawa every day.
There is 1 airport in Ottawa. From Washington, D.C. Dulles Intl Airport there are direct flights to Ottawa (YOW).
Search flight deals

Frequently asked questions about flying from Washington, D.C. Dulles Intl Airport to Ottawa

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

    The distance between Washington, D.C. Dulles Intl and Ottawa is about 732.9 km. 1h 41m is a normal flight duration for this route.

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

    Prices for flights from Washington, D.C. Dulles Intl Airport to Ottawa Airport are refreshed on a daily basis.

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

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

    The necessary travel and health documents for your Ottawa Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

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

Travelling to a place near Ottawa?

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

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Washington, D.C. to Ottawa for you.

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

Yes. momondo enables you to select and highlight flights to Ottawa from Washington, D.C. with this policy.

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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