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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 8/4. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — YOW
20 Apr — 27 Apr1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Washington, D.C. to Ottawa are usually found in October or July, booked 32 days in advance, depart on a Friday or Saturday 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 21 March 2026.

Sat 25/46:50 p.m.
DCA
-
YOW
1 stop4h 16m
Air Canada
Sun 26/410:25 a.m.
YOW
-
DCA
Nonstop1h 36m
Air Canada
Deal found 19/3C$ 360
Mon 20/411:40 a.m.
IAD
-
YOW
1 stop5h 04m
Porter Airlines
Tue 21/47:00 a.m.
YOW
-
IAD
1 stop3h 54m
Porter Airlines
Deal found 16/3C$ 424
Sat 18/41:45 p.m.
IAD
-
YOW
1 stop3h 44m
Porter Airlines
Tue 28/47:00 a.m.
YOW
-
IAD
1 stop3h 54m
Porter Airlines
Deal found 18/3C$ 432
Mon 13/411:40 a.m.
IAD
-
YOW
1 stop5h 04m
Porter Airlines
Mon 20/46:45 a.m.
YOW
-
IAD
1 stop4h 09m
Porter Airlines
Deal found 16/3C$ 436
Thu 16/411:40 a.m.
IAD
-
YOW
1 stop5h 24m
Porter Airlines
Wed 29/46:45 a.m.
YOW
-
IAD
1 stop4h 09m
Porter Airlines
Deal found 18/3C$ 439
Tue 14/411:40 a.m.
IAD
-
YOW
1 stop3h 24m
Porter Airlines
Sat 25/48:40 a.m.
YOW
-
IAD
1 stop4h 19m
Porter Airlines
Deal found 18/3C$ 440
Mon 20/46:35 a.m.
BWI
-
YOW
1 stop10h 24m
Multiple Airlines
Wed 29/47:00 a.m.
YOW
-
BWI
1 stop26h 17m
Multiple Airlines
Deal found 18/3C$ 440
Sat 18/41:45 p.m.
IAD
-
YOW
1 stop3h 44m
Porter Airlines
Fri 24/41:15 p.m.
YOW
-
IAD
1 stop3h 59m
Porter Airlines
Deal found 18/3C$ 443
Tue 21/411:40 a.m.
IAD
-
YOW
1 stop3h 24m
Porter Airlines
Wed 29/46:45 a.m.
YOW
-
IAD
1 stop4h 09m
Porter Airlines
Deal found 18/3C$ 446
Thu 9/46:00 a.m.
DCA
-
YOW
1 stop4h 11m
Air Canada
Sun 12/45:45 a.m.
YOW
-
DCA
1 stop4h 34m
Air Canada
Deal found 18/3C$ 450
Thu 16/411:40 a.m.
IAD
-
YOW
1 stop5h 24m
Porter Airlines
Thu 30/46:50 a.m.
YOW
-
IAD
1 stop4h 04m
Porter Airlines
Deal found 18/3C$ 450
Sat 2/54:05 p.m.
BWI
-
YOW
1 stop24h 48m
Multiple Airlines
Sat 9/57:00 a.m.
YOW
-
BWI
1 stop10h 07m
Multiple Airlines
Deal found 18/3C$ 450

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 21 March 2026.

Round-trip from

C$ 360

One-way from

C$ 195

Popular in

December

Cheapest in

October

Average price

C$ 656

Good one-way deal

C$ 287 or less
Air Canada
  • Air Canada
  • 25/4-26/4
  • 1 total stop
  • 5h 52m total
  • Washington, D.C. to Ottawa
Search Deals
8/4
  • 8/4
  • 1 total stop
  • 22h 13m total
  • Washington, D.C. to Ottawa
Search Deals
Highest demand for flights based on searches. 15% potential increase in price (C$ 147 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (C$ 28 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 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 21 March 2026.
Use the filters below to find and compare flights from Washington, D.C. 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

Wed 29/4

5:10 p.m.-6:55 p.m.

Nonstop1h 45m

Ottawa

Sun 3/5

2:40 p.m.-4:30 p.m.

Nonstop1h 50m

C$ 565

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Wed 29/4

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

1 stop3h 24m

Ottawa

Sun 3/5

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

1 stop4h 21m

C$ 567

Washington, D.C.Ottawa

DCA - YOW

DCAYOW

Washington, D.C. Reagan-National

Thu 30/4

12:55 p.m.-2:27 p.m.

Nonstop1h 32m

Ottawa

Sun 3/5

10:25 a.m.-12:01 p.m.

Nonstop1h 36m

C$ 582

BaltimoreOttawa

BWI - YOW

BWIYOW

Baltimore/Washington

Wed 22/4

9:59 p.m.-4:59 p.m.

1 stop19h 00m

Ottawa

Thu 30/4

4:45 p.m.-7:11 a.m.

1 stop14h 26m

C$ 594

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Fri 19/6

8:18 a.m.-10:03 a.m.

Nonstop1h 45m

Ottawa

Sun 28/6

6:00 a.m.-7:44 a.m.

Nonstop1h 44m

C$ 601

Washington, D.C.Ottawa

DCA - YOW

DCAYOW

Washington, D.C. Reagan-National

Thu 9/7

1:00 p.m.-4:38 p.m.

1 stop3h 38m

Ottawa

Tue 14/7

6:05 a.m.-9:32 a.m.

1 stop3h 27m

C$ 615

Washington, D.C.Ottawa

DCA - YOW

DCAYOW

Washington, D.C. Reagan-National

Tue 7/7

1:00 p.m.-4:38 p.m.

1 stop3h 38m

Ottawa

Tue 14/7

6:05 a.m.-9:32 a.m.

1 stop3h 27m

C$ 615

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Fri 22/5

10:10 p.m.-11:54 p.m.

Nonstop1h 44m

Ottawa

Sun 24/5

10:00 a.m.-11:43 a.m.

Nonstop1h 43m

C$ 648

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Thu 9/4

8:15 a.m.-10:03 a.m.

Nonstop1h 48m

Ottawa

Sun 12/4

7:30 p.m.-9:18 p.m.

Nonstop1h 48m

C$ 660
Quickest round-trip

Washington, D.C.Ottawa

DCA - YOW

DCAYOW

Washington, D.C. Reagan-National

Wed 15/7

12:40 p.m.-2:10 p.m.

Nonstop1h 30m

Ottawa

Sun 19/7

10:25 a.m.-12:00 p.m.

Nonstop1h 35m

C$ 661

Flights are sorted by cheapest round-trip flights first.

Deals found on 16/3

Showing 1-10 of 55 resultsSorted by cheapest first
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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 13 March 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$ 154). Flying from Washington, D.C. to Ottawa in December is currently the most expensive (average of C$ 303). 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 21 March 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 85% 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 21 March 2026.

The most flights from WAS to YOW are scheduled on a Monday (9 on average). You will have fewer flight options on Wednesday, 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 21 March 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
8.0
Very good
425 reviews
Check prices

Food

7.6

Comfort

8.0

Boarding

8.2

Overall

8.0

Entertainment

7.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

John,Mar 2026

YYZ - PVR

I'm 6ft 4in. The seats don't have enough room. But was a good flight.
Porter Airlines
8.0
Very good
425 reviews
Porter Airlines
8.0
Very good
425 reviews
Check prices

Food

7.6

Comfort

8.0

Boarding

8.2

Overall

8.0

Entertainment

7.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

John,Mar 2026

YYZ - PVR

I'm 6ft 4in. The seats don't have enough room. But was a good flight.
Air Canada
7.1
Good
10,821 reviews
Porter Airlines
8.0
Very good
425 reviews
Check prices

Food

7.6

Comfort

8.0

Boarding

8.2

Overall

8.0

Entertainment

7.0

Crew

8.6

Reviews

1 / 20
10.0
Excellent

John,Mar 2026

YYZ - PVR

I'm 6ft 4in. The seats don't have enough room. But was a good flight.

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$ 582, United Airlines can have you in Ottawa from Washington, D.C. in 1h 32m. 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 (72%), United Airlines (72%) or Air Canada (70%) 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$ 498 for a flight from Washington, D.C. to Ottawa. The cheapest flight overall is C$ 343 while the most popular route, (Washington, D.C. Dulles Intl - Ottawa) is currently priced at C$ 471.

  • 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 December is currently the most expensive (average of C$ 303). 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
Perth
Wakefield
Pembroke
Smiths Falls

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