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Cheap flights from Washington, D.C. to Ottawa from C$ 173

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 13/12. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — YOW
29 Nov — 6 Dec1
1 adult
1 adult, Economy, 0 bags

Cheapflights Tip: The best prices from Washington, D.C. to Ottawa are usually found in January or April, booked 57 days in advance, depart on a Saturday or Monday and return on a Friday

Cheap flight deals from Washington, D.C. to Ottawa

Discover tips and strategies to find the most affordable flight options for your journey from Washington, D.C. (WAS) to Ottawa (YOW). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 30 October 2025.

Round-trip from

C$ 360

One-way from

C$ 173

Popular in

March

Cheapest in

January

Average price

C$ 591

Good one-way deal

C$ 268 or less
5/12-7/12
  • 5/12-7/12
  • 4 total stops
  • 39h 40m total
  • Washington, D.C. to Ottawa
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13/12
  • 13/12
  • 1 total stop
  • 15h 40m total
  • Washington, D.C. to Ottawa
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Highest demand for flights based on searches. 2% potential increase in price (C$ 16 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease (C$ 17 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Price to beat on a one-way flight from Washington, D.C. (WAS) to Ottawa.
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Find flight deals from Washington, D.C. to Ottawa

Enter your travel dates to find the best prices.

Cheapest flights from Washington, D.C. to Ottawa
Explore the most affordable flight options available from Washington, D.C. to Ottawa. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 30 October 2025.

Fri 5/1210:40 a.m.BWI - YOW
1 stop13h 18mMultiple Airlines
Sun 7/127:00 a.m.YOW - BWI
3 stops26h 22mMultiple Airlines
Deal found 30/10C$ 360
Mon 8/128:45 a.m.BWI - YOW
1 stop15h 40mMultiple Airlines
Wed 10/124:15 p.m.YOW - BWI
1 stop30h 42mMultiple Airlines
Deal found 30/10C$ 394
Thu 27/118:45 p.m.BWI - YOW
1 stop27h 13mMultiple Airlines
Mon 1/124:15 p.m.YOW - BWI
1 stop17h 53mMultiple Airlines
Deal found 30/10C$ 395
Thu 27/1111:40 a.m.IAD - YOW
1 stop8h 14mPorter Airlines
Thu 4/126:50 a.m.YOW - IAD
1 stop3h 34mPorter Airlines
Deal found 28/10C$ 404
Thu 20/116:30 p.m.IAD - YOW
1 stop3h 59mPorter Airlines
Sun 23/111:20 p.m.YOW - IAD
1 stop3h 54mPorter Airlines
Deal found 30/10C$ 405
Wed 19/116:30 p.m.IAD - YOW
1 stop3h 59mPorter Airlines
Thu 20/116:50 a.m.YOW - IAD
1 stop3h 34mPorter Airlines
Deal found 29/10C$ 406
Thu 20/115:40 a.m.BWI - YOW
1 stop11h 45mMultiple Airlines
Mon 24/114:15 p.m.YOW - BWI
1 stop17h 53mMultiple Airlines
Deal found 29/10C$ 406
Thu 20/116:30 p.m.IAD - YOW
1 stop3h 59mPorter Airlines
Mon 24/111:20 p.m.YOW - IAD
1 stop3h 54mPorter Airlines
Deal found 29/10C$ 413
Mon 8/1211:40 a.m.IAD - YOW
1 stop3h 24mPorter Airlines
Wed 10/126:50 a.m.YOW - IAD
1 stop3h 34mPorter Airlines
Deal found 30/10C$ 415
Thu 11/126:30 p.m.IAD - YOW
1 stop3h 59mPorter Airlines
Thu 18/121:20 p.m.YOW - IAD
1 stop3h 54mPorter Airlines
Deal found 28/10C$ 422
Sun 16/116:30 p.m.IAD - YOW
1 stop3h 59mPorter Airlines
Wed 19/116:50 a.m.YOW - IAD
1 stop3h 34mPorter Airlines
Deal found 29/10C$ 426
Tue 11/119:36 p.m.BWI - YOW
2 stops27h 06mMultiple Airlines
Tue 25/119:30 a.m.YOW - BWI
1 stop7h 54mMultiple Airlines
Deal found 28/10C$ 427

Cheapflights 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, Cheapflights users made 629,999 searches. Data last updated 30 October 2025.
Use the filters below to find and compare flights from Washington, D.C. to Ottawa that are best for you.

Fly from

Washington, D.C.

Fly to

Ottawa

Route

Depart

Return

Price

BaltimoreOttawa

BWI - YOW

BWIYOW

Baltimore/Washington

Fri 5/12

10:40 a.m.-11:58 p.m.

1 stop13h 18m

Ottawa

Sun 7/12

7:00 a.m.-9:22 a.m.

3 stops26h 22m

C$ 360

BaltimoreOttawa

BWI - YOW

BWIYOW

Baltimore/Washington

Thu 27/11

8:45 p.m.-11:58 p.m.

1 stop27h 13m

Ottawa

Mon 1/12

4:15 p.m.-10:08 a.m.

1 stop17h 53m

C$ 395

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Thu 27/11

11:40 a.m.-7:54 p.m.

1 stop8h 14m

Ottawa

Thu 4/12

6:50 a.m.-10:24 a.m.

1 stop3h 34m

C$ 404

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Wed 3/12

6:30 p.m.-10:29 p.m.

1 stop3h 59m

Ottawa

Mon 8/12

1:20 p.m.-5:14 p.m.

1 stop3h 54m

C$ 405

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Wed 19/11

6:30 p.m.-10:29 p.m.

1 stop3h 59m

Ottawa

Thu 20/11

6:50 a.m.-10:24 a.m.

1 stop3h 34m

C$ 406

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Mon 17/11

11:40 a.m.-3:04 p.m.

1 stop3h 24m

Ottawa

Thu 20/11

6:50 a.m.-10:24 a.m.

1 stop3h 34m

C$ 423

BaltimoreOttawa

BWI - YOW

BWIYOW

Baltimore/Washington

Tue 11/11

9:36 p.m.-12:42 a.m.

2 stops27h 06m

Ottawa

Tue 25/11

9:30 a.m.-5:24 p.m.

1 stop7h 54m

C$ 427

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Sun 23/11

11:40 a.m.-3:04 p.m.

1 stop3h 24m

Ottawa

Tue 25/11

9:30 a.m.-7:45 a.m.

1 stop22h 15m

C$ 431

BaltimoreOttawa

BWI - YOW

BWIYOW

Baltimore/Washington

Mon 9/2

3:31 p.m.-11:58 p.m.

1 stop8h 27m

Ottawa

Sat 21/2

7:00 a.m.-8:50 a.m.

3 stops25h 50m

C$ 433

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Fri 12/12

11:40 a.m.-3:04 p.m.

1 stop3h 24m

Ottawa

Fri 19/12

1:20 p.m.-5:14 p.m.

1 stop3h 54m

C$ 437

Flights are sorted by cheapest round-trip flights first.

Deals found on 29/10

Showing 1-10 of 51 results
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Best time to book a flight from Washington, D.C. to Ottawa

Have a flexible travel schedule? Discover the best time to fly to Ottawa from Washington, D.C. with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. to Ottawa

How far ahead should I book a flight from Washington, D.C. to Ottawa?

Use this chart to determine the optimal time to book a round-trip flight from Washington, D.C. to Ottawa. Price data was last updated on 24 October 2025.

The best time to book flights from Washington, D.C. to Ottawa is 57 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Washington, D.C. to Ottawa?

Currently, September is the cheapest month in which you can book a flight from Washington, D.C. to Ottawa (average of C$ 158). Flying from Washington, D.C. to Ottawa in June is currently the most expensive (average of C$ 299). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from WAS to YOW?

Find hourly flight availability from Washington, D.C. to Ottawa. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 30 October 2025.

When flying from Washington, D.C. to Ottawa, the time of day you fly usually plays a role in the price. Save by searching for a flight at noon, which can drop the price by up to 83% versus a flight in the afternoon.

How much does it cost to fly round-trip from Washington, D.C. to Ottawa?

Reviews of airlines servicing Ottawa

Get insights into the airlines that provide service to Ottawa. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ottawa. Reviews last updated 30 October 2025.
Get a feel of what it's like to fly with Porter Airlines from Washington, D.C. to Ottawa by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Porter Airlines
8.0
Very good
384 reviews
Check prices

Comfort

8.0

Entertainment

7.0

Crew

8.6

Overall

8.0

Boarding

8.2

Food

7.6

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.
Porter Airlines
8.0
Very good
384 reviews
Porter Airlines
8.0
Very good
384 reviews
Check prices

Comfort

8.0

Entertainment

7.0

Crew

8.6

Overall

8.0

Boarding

8.2

Food

7.6

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.

Related info for your journey

Find useful and relevant information for your journey from Washington, D.C. to Ottawa. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Ottawa from Washington, D.C.?

    Ottawa (YOW), located 10.6 km from the city centre, is the airport you fly into when you book flights from Washington, D.C. to Ottawa. 0 airlines have flights to Ottawa from Washington, D.C. on a regular basis. Booking flights from Washington, D.C. to Ottawa should not be difficult; the airport handles an average of 4 inbound flights from Washington, D.C. per day.

  • How long is the flight from Washington, D.C. to Ottawa?

    For as low as C$ 501, Porter Airlines can have you in Ottawa from Washington, D.C. in 1h 35m. The distance from Washington, D.C. to Ottawa is about 727 km. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • What are the most popular routes from Washington, D.C. to Ottawa?

    The most popular route from Washington, D.C. to Ottawa is Washington, D.C. Dulles Intl - Ottawa. You may also consider Washington, D.C. Reagan-National - Ottawa or Baltimore/Washington - Ottawa.

  • What are the most reliable airlines from Washington, D.C. to Ottawa?

    Consider GoJet (80%), Air Canada (80%) or United Airlines (80%) when booking your flight. These represent the most reliable airlines when flying from Washington, D.C. to Ottawa.

  • What are the cheapest flights from Washington, D.C. to Ottawa?

    On average you can expect to pay C$ 3,445 for a flight from Washington, D.C. to Ottawa. The cheapest flight overall is C$ 234 while the most popular route, (Washington, D.C. Dulles Intl - Ottawa) is currently priced at C$ 397.

  • Can I find deals for flights from Washington, D.C. to Ottawa that include hotel bookings?

    Yes. In addition to deals on Washington, D.C. to Ottawa flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Washington, D.C. to Ottawa?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington, D.C. to Ottawa.

  • Can I find deals for business class flights from Washington, D.C. to Ottawa?

    Yes. Cheapflights offers flight deals from Washington, D.C. to Ottawa by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Washington, D.C. to Ottawa?

    Currently, September is the cheapest month in which you can book a flight from Washington, D.C. to Ottawa (average of C$ 158). Flying from Washington, D.C. to Ottawa in June is currently the most expensive (average of C$ 299). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near Ottawa?

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

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