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Cheap flights from Washington, D.C. Dulles Intl Airport to Ottawa from $131

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 12/12. 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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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.
Multiple Airlines Logo
9:00 am - 5:13 pmIAD-YOW
32h 13m2 stops
Multiple Airlines Logo
9:30 am - 8:24 pmYOW-IAD
10h 54m1 stop
$298Multiple Airlines
Find Deal
Wed, Dec 10 - Sun, Dec 14
Porter Airlines Logo
11:40 am - 5:29 pmIAD-YOW
5h 49m1 stop
Porter Airlines Logo
6:50 am - 10:24 amYOW-IAD
3h 34m1 stop
$319Porter Airlines
Find Deal
Wed, Dec 3 - Fri, Dec 5
Porter Airlines Logo
11:40 am - 5:29 pmIAD-YOW
5h 49m1 stop
Porter Airlines Logo
1:20 pm - 5:14 pmYOW-IAD
3h 54m1 stop
$324Porter Airlines
Find Deal
Sat, Dec 20 - Sun, Jan 4
Porter Airlines Logo
11:40 am - 3:04 pmIAD-YOW
3h 24m1 stop
Porter Airlines Logo
1:20 pm - 5:14 pmYOW-IAD
3h 54m1 stop
$326Porter Airlines
Find Deal
Fri, Nov 28 - Mon, Dec 1
Porter Airlines Logo
11:40 am - 5:29 pmIAD-YOW
5h 49m1 stop
Porter Airlines Logo
6:50 am - 10:24 amYOW-IAD
3h 34m1 stop
$327Porter Airlines
Find Deal
Wed, Dec 3 - Wed, Dec 10
Porter Airlines Logo
6:30 pm - 10:29 pmIAD-YOW
3h 59m1 stop
Porter Airlines Logo
1:20 pm - 5:14 pmYOW-IAD
3h 54m1 stop
$328Porter Airlines
Find Deal
Thu, Dec 4 - Mon, Dec 8
Porter Airlines Logo
11:40 am - 5:29 pmIAD-YOW
5h 49m1 stop
Porter Airlines Logo
12:10 pm - 5:14 pmYOW-IAD
5h 04m1 stop
$340Porter Airlines
Find Deal
Thu, Feb 26 - Sun, Mar 1
Multiple Airlines Logo
5:45 am - 5:25 pmIAD-YOW
35h 40m2 stops
Multiple Airlines Logo
12:10 pm - 5:14 pmYOW-IAD
5h 04m1 stop
$341Multiple Airlines
Find Deal
Thu, Dec 4 - Thu, Dec 11
Porter Airlines Logo
11:40 am - 5:29 pmIAD-YOW
5h 49m1 stop
Porter Airlines Logo
8:40 am - 5:14 pmYOW-IAD
8h 34m1 stop
$343Porter Airlines
Find Deal
Tue, Dec 23 - Mon, Dec 29
Porter Airlines Logo
11:40 am - 3:04 pmIAD-YOW
3h 24m1 stop
Porter Airlines Logo
6:50 am - 10:24 amYOW-IAD
3h 34m1 stop
$349Porter Airlines
Find Deal
Fri, Dec 19 - Mon, Dec 22

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
Dec 3
IAD11:40 amWashington, D.C. Dulles Intl
5h 49m
1 stop
YOW5:29 pmOttawa
Dec 5
YOW6:50 amOttawa
3h 34m
1 stop
IAD10:24 amWashington, D.C. Dulles Intl
$319
Find similar
Porter Airlines
Dec 20
IAD11:40 amWashington, D.C. Dulles Intl
5h 49m
1 stop
YOW5:29 pmOttawa
Jan 4
YOW1:20 pmOttawa
3h 54m
1 stop
IAD5:14 pmWashington, D.C. Dulles Intl
$324
Find similar
Porter Airlines
Nov 28
IAD11:40 amWashington, D.C. Dulles Intl
3h 24m
1 stop
YOW3:04 pmOttawa
Dec 1
YOW1:20 pmOttawa
3h 54m
1 stop
IAD5:14 pmWashington, D.C. Dulles Intl
$326
Find similar

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

Our best WestJet deals on Washington, D.C. Dulles Intl Airport to Ottawa flight tickets
WestJet
Nov 17
IAD6:00 amWashington, D.C. Dulles Intl
18h 42m
2 stops
YOW12:42 amOttawa
Nov 20
YOW5:40 amOttawa
28h 44m
2 stops
IAD10:24 amWashington, D.C. Dulles Intl
$1,225
Find similar
WestJet
Nov 7
IAD12:27 pmWashington, D.C. Dulles Intl
12h 15m
2 stops
YOW12:42 amOttawa
Nov 11
YOW5:40 amOttawa
28h 44m
2 stops
IAD10:24 amWashington, D.C. Dulles Intl
$1,247
Find similar
WestJet
Nov 7
IAD6:40 amWashington, D.C. Dulles Intl
18h 02m
2 stops
YOW12:42 amOttawa
Nov 14
YOW6:00 amOttawa
17h 58m
2 stops
IAD11:58 pmWashington, D.C. Dulles Intl
$1,251
Find similar

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 832,500 searches. Data last updated November 6, 2025.
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

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Wed 12/10

9:00 am-5:13 pm

2 stops32h 13m

Ottawa

Sun 12/14

9:30 am-8:24 pm

1 stop10h 54m

$298

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Wed 12/3

11:40 am-5:29 pm

1 stop5h 49m

Ottawa

Fri 12/5

6:50 am-10:24 am

1 stop3h 34m

$319

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Sat 12/20

11:40 am-5:29 pm

1 stop5h 49m

Ottawa

Sun 1/4

1:20 pm-5:14 pm

1 stop3h 54m

$324

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Fri 11/28

11:40 am-3:04 pm

1 stop3h 24m

Ottawa

Mon 12/1

1:20 pm-5:14 pm

1 stop3h 54m

$326

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Wed 12/3

11:40 am-5:29 pm

1 stop5h 49m

Ottawa

Wed 12/10

6:50 am-10:24 am

1 stop3h 34m

$327

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Thu 12/4

6:30 pm-10:29 pm

1 stop3h 59m

Ottawa

Mon 12/8

1:20 pm-5:14 pm

1 stop3h 54m

$328

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Thu 2/26

11:40 am-5:29 pm

1 stop5h 49m

Ottawa

Sun 3/1

12:10 pm-5:14 pm

1 stop5h 04m

$340

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Thu 12/4

5:45 am-5:25 pm

2 stops35h 40m

Ottawa

Thu 12/11

12:10 pm-5:14 pm

1 stop5h 04m

$341

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Tue 12/23

11:40 am-5:29 pm

1 stop5h 49m

Ottawa

Mon 12/29

8:40 am-5:14 pm

1 stop8h 34m

$343

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Fri 12/19

11:40 am-3:04 pm

1 stop3h 24m

Ottawa

Mon 12/22

6:50 am-10:24 am

1 stop3h 34m

$349

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 cheapest month to fly to Ottawa?

In general, April is the cheapest month to fly from Washington, D.C. Dulles Intl Airport to Ottawa. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $297. The month of March is another great option to travel to Ottawa, with average flight prices from Washington, D.C. Dulles Intl Airport averaging around $300.

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

The cheapest day to depart from Washington, D.C. Dulles Intl Airport to Ottawa is on a Monday. Travelers who choose to depart for Ottawa on a Monday will often find tickets for as low as $427. 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 $508.

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. Dulles Intl Airport to Ottawa when you can find flight prices for as low as $448. 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. Dulles Intl Airport 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. 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 to Ottawa flights?

There are 3 cabin classes available to choose from on Washington, D.C. Dulles Intl 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 37% 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 November 2025, prices for Washington, D.C. Dulles Intl Airport to Ottawa flights are approximately 40% 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

$574

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. Dulles Intl Airport in the past 72 hours is $574. The best round-trip flight deal from Washington, D.C. Dulles Intl Airport to Ottawa found on momondo in the last 72 hours is $477.
The fastest flight from Washington, D.C. Dulles Intl Airport to Ottawa takes 1h 32m
Direct flights go from Washington, D.C. Dulles Intl Airport to Ottawa every day.
There is 1 airport near Ottawa: Ottawa (YOW)
Search flight deals

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

    There are 455.4 mi between Washington, D.C. Dulles Intl and Ottawa. By plane, this route typically takes 3h 24m.

  • 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 were last updated today.

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

  • 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 that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check 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 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. Dulles Intl Airport to Ottawa?

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

Best airlines flying from Washington, D.C. Dulles Intl Airport to Ottawa

Compare and see reviews for airlines that fly from Washington, D.C. Dulles Intl Airport to Ottawa with momondo
Airline
Rating
Free Cancellation
Price
Porter AirlinesPriceFrom $185Free CancellationRating
8.0
387 reviews
Search Porter Airlines flights
Air CanadaPriceFrom $206Free CancellationRating
7.1
10,416 reviews
Search Air Canada flights
United AirlinesPriceFrom $241Free CancellationRating
7.4
9,007 reviews
Search United Airlines flights

  • United Airlines Flights From Washington, D.C. Dulles Intl Airport to Ottawa

    Across 21 United Airlines flights from Washington, D.C. Dulles Intl Airport to Ottawa this week, the average price was $470, with the best United Airlines deals starting from $241 round-trip. 9,007 users have rated United Airlines on momondo, with an average score of 7.4/10.

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

    Across 10,416 Air Canada reviews on momondo, the average score is 7.1/10. Air Canada flies from Washington, D.C. Dulles Intl Airport to Ottawa about 21 times each week, with ticket deals ranging from $206 to $489. 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
Calabogie
Brockville
Petawawa
Pembroke
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?

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?

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 all potential Washington, D.C. to Ottawa flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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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