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Cheap flights from Washington, D.C. to Ottawa from C$ 144

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 4/2. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — YOW
16 Jan — 23 Jan1
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 Thursday and return on a Friday

Cheap 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 17 December 2025.

Tue 30/126:30 p.m.IAD - YOW
1 stop3h 59mPorter Airlines
Mon 5/16:50 a.m.YOW - IAD
1 stop3h 29mPorter Airlines
Deal found 15/12C$ 447
Wed 24/122:35 p.m.IAD - YOW
2 stops26h 50mMultiple Airlines
Wed 21/17:00 a.m.YOW - IAD
1 stop3h 19mMultiple Airlines
Deal found 17/12C$ 555
Tue 30/126:30 p.m.IAD - YOW
1 stop3h 59mPorter Airlines
Fri 2/11:20 p.m.YOW - IAD
1 stop3h 54mPorter Airlines
Deal found 15/12C$ 588
Wed 24/125:30 a.m.BWI - YOW
2 stops11h 55mMultiple Airlines
Sun 18/17:00 a.m.YOW - BWI
1 stop16h 09mMultiple Airlines
Deal found 15/12C$ 655
Tue 30/1210:10 a.m.DCA - YOW
1 stop6h 41mAmerican Airlines
Mon 5/16:45 a.m.YOW - DCA
1 stop5h 52mAmerican Airlines
Deal found 15/12C$ 661
Wed 24/122:35 p.m.IAD - YOW
2 stops26h 50mMultiple Airlines
Sun 18/18:55 p.m.YOW - IAD
1 stop13h 24mMultiple Airlines
Deal found 15/12C$ 672
Fri 19/122:32 p.m.IAD - YOW
2 stops33h 26mMultiple Airlines
Mon 12/17:00 a.m.YOW - IAD
1 stop3h 19mMultiple Airlines
Deal found 15/12C$ 696
Wed 24/121:44 p.m.BWI - YOW
1 stop27h 26mMultiple Airlines
Wed 21/17:00 a.m.YOW - BWI
1 stop12h 03mMultiple Airlines
Deal found 17/12C$ 705
Fri 19/1211:55 a.m.BWI - YOW
2 stops29h 15mMultiple Airlines
Mon 12/14:15 p.m.YOW - BWI
1 stop26h 48mMultiple Airlines
Deal found 15/12C$ 709
Tue 30/129:58 p.m.IAD - YOW
2 stops26h 44mMultiple Airlines
Mon 5/16:50 a.m.YOW - IAD
1 stop3h 29mMultiple Airlines
Deal found 15/12C$ 746
Wed 31/1211:40 a.m.IAD - YOW
1 stop5h 49mPorter Airlines
Fri 2/11:20 p.m.YOW - IAD
1 stop3h 54mPorter Airlines
Deal found 15/12C$ 766
Sun 21/1211:40 a.m.IAD - YOW
2 stops36h 45mMultiple Airlines
Fri 2/16:50 a.m.YOW - IAD
1 stop3h 29mMultiple Airlines
Deal found 14/12C$ 794

Find 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 17 December 2025.

Round-trip from

C$ 340

One-way from

C$ 144

Popular in

March

Cheapest in

January

Average price

C$ 583

Good one-way deal

C$ 225 or less
18/1-25/1
  • 18/1-25/1
  • 4 total stops
  • 42h 21m total
  • Washington, D.C. to Ottawa
Search Deals
4/2
  • 4/2
  • 1 total stop
  • 11h 05m total
  • Washington, D.C. to Ottawa
Search Deals
Highest demand for flights based on searches. 0% potential increase in price (C$ 5 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (C$ 15 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals
Price to beat on a one-way flight from Washington, D.C. (WAS) to Ottawa.
Search Deals

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 17 December 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

Thu 8/1

1:00 p.m.-12:25 a.m.

1 stop11h 25m

Ottawa

Sun 11/1

4:20 p.m.-7:03 p.m.

3 stops26h 43m

C$ 354

BaltimoreOttawa

BWI - YOW

BWIYOW

Baltimore/Washington

Tue 27/1

8:00 a.m.-5:13 p.m.

1 stop9h 13m

Ottawa

Thu 29/1

9:40 a.m.-5:27 p.m.

1 stop7h 47m

C$ 362

BaltimoreOttawa

BWI - YOW

BWIYOW

Baltimore/Washington

Mon 26/1

6:15 a.m.-5:13 p.m.

1 stop10h 58m

Ottawa

Wed 28/1

4:15 p.m.-8:31 a.m.

1 stop16h 16m

C$ 383

BaltimoreOttawa

BWI - YOW

BWIYOW

Baltimore/Washington

Thu 29/1

5:37 p.m.-12:25 a.m.

1 stop30h 48m

Ottawa

Thu 5/2

10:00 a.m.-6:27 p.m.

2 stops32h 27m

C$ 384

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Mon 19/1

11:35 a.m.-5:29 p.m.

1 stop5h 54m

Ottawa

Wed 21/1

7:00 a.m.-10:19 a.m.

1 stop3h 19m

C$ 387

BaltimoreOttawa

BWI - YOW

BWIYOW

Baltimore/Washington

Tue 13/1

1:00 p.m.-5:25 p.m.

1 stop28h 25m

Ottawa

Tue 20/1

7:00 a.m.-10:27 a.m.

2 stops27h 27m

C$ 388

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Fri 2/1

11:35 a.m.-3:04 p.m.

1 stop3h 29m

Ottawa

Thu 15/1

7:00 a.m.-10:19 a.m.

1 stop3h 19m

C$ 405

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Fri 16/1

10:08 p.m.-5:15 p.m.

2 stops19h 07m

Ottawa

Mon 19/1

7:00 a.m.-10:19 a.m.

1 stop3h 19m

C$ 432

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Wed 14/1

11:35 a.m.-5:29 p.m.

1 stop5h 54m

Ottawa

Thu 15/1

9:40 a.m.-6:24 p.m.

1 stop8h 44m

C$ 433

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Fri 13/2

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

1 stop3h 59m

Ottawa

Mon 16/2

12:10 p.m.-5:14 p.m.

1 stop5h 04m

C$ 436

Flights are sorted by cheapest round-trip flights first.

Deals found on 17/12

Showing 1-10 of 52 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 12 December 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, March is the cheapest month in which you can book a flight from Washington, D.C. to Ottawa (average of C$ 154). Flying from Washington, D.C. to Ottawa in June is currently the most expensive (average of C$ 296). 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 17 December 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.

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 17 December 2025.
Get a feel of what it's like to fly with Porter Airlines and Air Canada 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
399 reviews
Check prices

Food

7.6

Entertainment

7.0

Comfort

7.9

Crew

8.6

Overall

8.0

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out
Porter Airlines
8.0
Very good
399 reviews
Porter Airlines
8.0
Very good
399 reviews
Check prices

Food

7.6

Entertainment

7.0

Comfort

7.9

Crew

8.6

Overall

8.0

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out
Air Canada
7.1
Good
10,531 reviews
Porter Airlines
8.0
Very good
399 reviews
Check prices

Food

7.6

Entertainment

7.0

Comfort

7.9

Crew

8.6

Overall

8.0

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Mohameed,Nov 2025

LAS - YYZ

It's good. Planes are new and fresh. WiFi is best and stands out

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$ 465, 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 Republic Airways (85%), United Airlines (74%) or Air Canada (72%) 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$ 383 for a flight from Washington, D.C. to Ottawa. The cheapest flight overall is C$ 223 while the most popular route, (Washington, D.C. Dulles Intl - Ottawa) is currently priced at C$ 377.

  • 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, March is the cheapest month in which you can book a flight from Washington, D.C. to Ottawa (average of C$ 154). Flying from Washington, D.C. to Ottawa in June is currently the most expensive (average of C$ 296). 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
Pembroke
Wakefield

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