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Cheap flights from Washington, D.C. to Ottawa from C$ 195

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 15/2. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — YOW
5 Mar — 12 Mar1
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 21 days in advance, depart on a Friday or Wednesday 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 3 February 2026.

Mon 13/48:30 p.m.
IAD
-
YOW
1 stop20h 43m
Multiple Airlines
Sat 18/48:40 a.m.
YOW
-
IAD
1 stop3h 49m
Multiple Airlines
Deal found 1/2C$ 448
Wed 18/36:25 a.m.
BWI
-
YOW
1 stop11h 00m
Multiple Airlines
Wed 25/34:15 p.m.
YOW
-
BWI
1 stop16h 26m
Multiple Airlines
Deal found 1/2C$ 459
Mon 16/38:09 a.m.
IAD
-
YOW
1 stop9h 08m
Multiple Airlines
Sat 21/38:40 a.m.
YOW
-
IAD
1 stop3h 49m
Multiple Airlines
Deal found 1/2C$ 463
Thu 12/311:40 a.m.
IAD
-
YOW
1 stop5h 04m
Porter Airlines
Fri 13/311:00 a.m.
YOW
-
IAD
1 stop6h 14m
Porter Airlines
Deal found 3/2C$ 475
Fri 8/58:09 a.m.
IAD
-
YOW
2 stops16h 11m
Multiple Airlines
Mon 11/511:00 a.m.
YOW
-
IAD
1 stop4h 21m
Multiple Airlines
Deal found 1/2C$ 477
Tue 24/212:30 p.m.
BWI
-
YOW
1 stop11h 55m
Multiple Airlines
Mon 2/34:15 p.m.
YOW
-
BWI
1 stop16h 51m
Multiple Airlines
Deal found 2/2C$ 477
Wed 1/46:30 p.m.
IAD
-
YOW
1 stop3h 59m
Porter Airlines
Wed 8/41:20 p.m.
YOW
-
IAD
1 stop3h 54m
Porter Airlines
Deal found 2/2C$ 479
Thu 19/210:06 a.m.
BWI
-
YOW
1 stop14h 19m
Multiple Airlines
Mon 23/24:15 p.m.
YOW
-
BWI
1 stop16h 51m
Multiple Airlines
Deal found 2/2C$ 479
Thu 19/311:40 a.m.
IAD
-
YOW
1 stop5h 04m
Porter Airlines
Thu 26/36:45 a.m.
YOW
-
IAD
1 stop3h 39m
Porter Airlines
Deal found 2/2C$ 483
Mon 23/211:40 a.m.
IAD
-
YOW
1 stop6h 29m
Porter Airlines
Mon 2/36:45 a.m.
YOW
-
IAD
1 stop3h 39m
Porter Airlines
Deal found 2/2C$ 486
Thu 12/311:40 a.m.
IAD
-
YOW
1 stop5h 04m
Porter Airlines
Sun 15/312:10 p.m.
YOW
-
IAD
1 stop5h 04m
Porter Airlines
Deal found 1/2C$ 488
Wed 18/311:40 a.m.
IAD
-
YOW
1 stop5h 49m
Porter Airlines
Wed 25/36:45 a.m.
YOW
-
IAD
1 stop3h 39m
Porter Airlines
Deal found 1/2C$ 489

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 3 February 2026.

Round-trip from

C$ 448

One-way from

C$ 195

Popular in

December

Cheapest in

January

Average price

C$ 512

Good one-way deal

C$ 173 or less
Porter Airlines
  • Porter Airlines
  • 13/4-18/4
  • 2 total stops
  • 24h 32m total
  • Washington, D.C. to Ottawa
Search Deals
15/2
  • 15/2
  • 1 total stop
  • 27h 21m total
  • Washington, D.C. to Ottawa
Search Deals
Highest demand for flights based on searches. 1% potential increase in price (C$ 12 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (C$ 34 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2026
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 3 February 2026.
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

Wed 18/3

6:25 a.m.-5:25 p.m.

1 stop11h 00m

Ottawa

Wed 25/3

4:15 p.m.-8:41 a.m.

1 stop16h 26m

C$ 459

BaltimoreOttawa

BWI - YOW

BWIYOW

Baltimore/Washington

Thu 19/2

10:06 a.m.-12:25 a.m.

1 stop14h 19m

Ottawa

Mon 23/2

4:15 p.m.-9:06 a.m.

1 stop16h 51m

C$ 479

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Wed 18/3

11:40 a.m.-5:29 p.m.

1 stop5h 49m

Ottawa

Wed 25/3

6:45 a.m.-10:24 a.m.

1 stop3h 39m

C$ 489

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Thu 28/5

4:05 p.m.-7:39 p.m.

1 stop3h 34m

Ottawa

Sun 31/5

11:00 a.m.-3:21 p.m.

1 stop4h 21m

C$ 493

BaltimoreOttawa

BWI - YOW

BWIYOW

Baltimore/Washington

Tue 24/2

12:30 p.m.-12:25 a.m.

1 stop11h 55m

Ottawa

Wed 25/2

3:55 p.m.-8:24 a.m.

2 stops16h 29m

C$ 496

BaltimoreOttawa

BWI - YOW

BWIYOW

Baltimore/Washington

Thu 19/2

10:06 a.m.-12:25 a.m.

1 stop14h 19m

Ottawa

Tue 24/2

7:00 a.m.-9:06 a.m.

1 stop26h 06m

C$ 504

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Fri 20/3

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

1 stop3h 59m

Ottawa

Fri 27/3

9:15 a.m.-3:46 p.m.

1 stop6h 31m

C$ 512

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Wed 1/4

3:15 p.m.-5:13 p.m.

2 stops25h 58m

Ottawa

Mon 6/4

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

1 stop3h 54m

C$ 518

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Thu 9/4

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

1 stop3h 24m

Ottawa

Sun 12/4

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

1 stop3h 54m

C$ 519

Washington, D.C.Ottawa

DCA - YOW

DCAYOW

Washington, D.C. Reagan-National

Fri 20/3

6:00 a.m.-9:41 a.m.

1 stop3h 41m

Ottawa

Fri 27/3

5:45 a.m.-10:21 a.m.

1 stop4h 36m

C$ 523

Flights are sorted by cheapest round-trip flights first.

Deals found on 31/1

Showing 1-10 of 55 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 30 January 2026.

The best time to book flights from Washington, D.C. to Ottawa is 21 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$ 153). Flying from Washington, D.C. to Ottawa in December is currently the most expensive (average of C$ 302). 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 3 February 2026.

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.

Weekly flight availability from Washington, D.C. to Ottawa

Explore weekly flight availability from Washington, D.C. to Ottawa. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 3 February 2026.

The most flights from WAS to YOW are scheduled on a Monday (9 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (7 on average).

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 3 February 2026.
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
7.9
Good
412 reviews
Check prices

Overall

7.9

Food

7.5

Entertainment

6.9

Crew

8.6

Boarding

8.2

Comfort

7.9

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
7.9
Good
412 reviews
Porter Airlines
7.9
Good
412 reviews
Check prices

Overall

7.9

Food

7.5

Entertainment

6.9

Crew

8.6

Boarding

8.2

Comfort

7.9

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
10,684 reviews
Porter Airlines
7.9
Good
412 reviews
Check prices

Overall

7.9

Food

7.5

Entertainment

6.9

Crew

8.6

Boarding

8.2

Comfort

7.9

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 8 inbound flights from Washington, D.C. per day.

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

    For as low as C$ 523, Porter Airlines can have you in Ottawa from Washington, D.C. in 3h 41m. 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 (84%), United Airlines (62%) or Air Canada (58%) when booking your flight. These represent the most reliable airlines when flying from Washington, D.C. to Ottawa.

  • 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$ 153). Flying from Washington, D.C. to Ottawa in December is currently the most expensive (average of C$ 302). 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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