Find flights
Deals
When to book
FAQs

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 30/9. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — YOW
9 Sep — 16 Sep1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Washington, D.C. to Ottawa are usually found in October or August, booked 67 days in advance, depart on a Thursday or Wednesday and return on a Saturday

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 10 August 2026.

Sun 6/912:05 p.m. -
1 stop5h 47m
Sun 13/910:40 a.m. -
1 stop4h 30m
Deal found 7/8C$ 439
Thu 24/93:50 p.m. -
1 stop5h 52m
Thu 1/1010:40 a.m. -
1 stop4h 30m
Deal found 10/8C$ 442
Sat 29/83:50 p.m. -
1 stop3h 24m
Mon 31/810:40 a.m. -
1 stop4h 30m
Deal found 6/8C$ 445
Thu 27/83:50 p.m. -
1 stop4h 14m
Mon 31/810:40 a.m. -
1 stop4h 30m
Deal found 6/8C$ 446
Fri 28/83:50 p.m. -
1 stop4h 14m
Tue 1/910:40 a.m. -
1 stop4h 30m
Deal found 5/8C$ 448
Wed 9/911:25 a.m. -
1 stop6h 27m
Wed 16/912:15 p.m. -
1 stop4h 23m
Deal found 10/8C$ 481
Thu 8/1011:25 a.m. -
1 stop6h 27m
Sun 11/1010:40 a.m. -
1 stop4h 30m
Deal found 7/8C$ 484
Thu 27/811:25 a.m. -
1 stop6h 29m
Sun 30/812:15 p.m. -
1 stop4h 26m
Deal found 6/8C$ 485
Mon 12/103:50 p.m. -
1 stop5h 52m
Fri 16/1010:40 a.m. -
1 stop4h 30m
Deal found 6/8C$ 487
Tue 6/1011:25 a.m. -
1 stop8h 37m
Thu 15/108:00 a.m. -
1 stop7h 10m
Deal found 10/8C$ 501
Sun 25/106:46 p.m. -
1 stop22h 34m
Fri 30/105:40 p.m. -
1 stop16h 58m
Deal found 7/8C$ 502
Wed 16/912:55 p.m. -
Nonstop1h 32m
Tue 22/910:40 a.m. -
Nonstop1h 34m
Deal found 7/8C$ 512

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 10 August 2026.

Round-trip from

C$ 439

One-way from

C$ 211

Popular in

December

Cheapest in

October

Average price

C$ 611

Good round-trip deal

C$ 216 or less

Good one-way deal

C$ 284 or less
Porter Airlines
  • Porter Airlines
  • 6/9-13/9
  • 2 total stops
  • 10h 17m total
  • Washington, D.C. to Ottawa
Search Deals
Porter Airlines
  • Porter Airlines
  • 1/9
  • 1 total stop
  • 4h 12m total
  • Washington, D.C. to Ottawa
Search Deals
Highest demand for flights based on searches. 7% potential increase in price (C$ 74 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (C$ 20 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 2026
Search Deals
Price to beat on a round-trip flight from Washington, D.C. (WAS) to Ottawa.
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 10 August 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 Washington, D.C. Dulles Intl - YOW Ottawa

IADYOW

Washington, D.C. Dulles Intl

Sat 12/9

6:13 p.m.-5:35 p.m.

2 stops23h 22m

Ottawa

Wed 16/9

6:25 p.m.-10:45 a.m.

1 stop16h 20m

C$ 510

Washington, D.C.Ottawa

DCA Washington, D.C. Reagan-National - YOW Ottawa

DCAYOW

Washington, D.C. Reagan-National

Tue 1/9

12:40 p.m.-2:11 p.m.

Nonstop1h 31m

Ottawa

Tue 1/9

5:45 p.m.-9:48 p.m.

1 stop4h 03m

C$ 524

Washington, D.C.Ottawa

DCA Washington, D.C. Reagan-National - YOW Ottawa

DCAYOW

Washington, D.C. Reagan-National

Fri 18/9

6:00 a.m.-10:18 a.m.

1 stop4h 18m

Ottawa

Wed 30/9

6:00 a.m.-10:20 a.m.

1 stop4h 20m

C$ 537
Quickest round-trip

Washington, D.C.Ottawa

DCA Washington, D.C. Reagan-National - YOW Ottawa

DCAYOW

Washington, D.C. Reagan-National

Fri 4/9

12:55 p.m.-2:26 p.m.

Nonstop1h 31m

Ottawa

Fri 11/9

10:40 a.m.-12:14 p.m.

Nonstop1h 34m

C$ 601

Washington, D.C.Ottawa

DCA Washington, D.C. Reagan-National - YOW Ottawa

DCAYOW

Washington, D.C. Reagan-National

Sun 15/11

12:55 p.m.-2:29 p.m.

Nonstop1h 34m

Ottawa

Sun 22/11

5:45 a.m.-10:29 a.m.

1 stop4h 44m

C$ 608

Washington, D.C.Ottawa

IAD Washington, D.C. Dulles Intl - YOW Ottawa

IADYOW

Washington, D.C. Dulles Intl

Fri 28/8

5:11 p.m.-6:55 p.m.

Nonstop1h 44m

Ottawa

Mon 31/8

12:15 p.m.-4:41 p.m.

1 stop4h 26m

C$ 619

Washington, D.C.Ottawa

DCA Washington, D.C. Reagan-National - YOW Ottawa

DCAYOW

Washington, D.C. Reagan-National

Thu 12/11

6:00 a.m.-9:47 a.m.

1 stop3h 47m

Ottawa

Sat 14/11

10:50 a.m.-3:24 p.m.

1 stop4h 34m

C$ 621

Washington, D.C.Ottawa

DCA Washington, D.C. Reagan-National - YOW Ottawa

DCAYOW

Washington, D.C. Reagan-National

Thu 27/8

12:40 p.m.-2:11 p.m.

Nonstop1h 31m

Ottawa

Mon 31/8

6:00 a.m.-10:18 a.m.

1 stop4h 18m

C$ 623

BaltimoreOttawa

BWI Baltimore/Washington - YOW Ottawa

BWIYOW

Baltimore/Washington

Fri 18/9

1:55 p.m.-3:07 p.m.

1 stop25h 12m

Ottawa

Tue 22/9

2:10 p.m.-2:11 p.m.

2 stops24h 01m

C$ 630

Washington, D.C.Ottawa

DCA Washington, D.C. Reagan-National - YOW Ottawa

DCAYOW

Washington, D.C. Reagan-National

Sun 6/9

8:30 a.m.-1:59 p.m.

1 stop5h 29m

Ottawa

Fri 2/10

6:05 a.m.-10:44 a.m.

1 stop4h 39m

C$ 634

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/8

Showing 1-10 of 60 resultsSorted by cheapest first
1
2
3
...
6

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

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

Currently, October is the cheapest month in which you can book a flight from Washington, D.C. to Ottawa (average of C$ 590). Flying from Washington, D.C. to Ottawa in February is currently the most expensive (average of C$ 902). 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 10 August 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 79% 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 10 August 2026.

The most flights from WAS to YOW are scheduled on a Monday (11 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (4 on average).

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

Airfare is below average for this route at the moment.
Washington, D.C. to Ottawa flights typically cost between C$ 545 and C$ 771 in September.
The cheapest round-trip price found within the last 5 days was C$ 439 on Porter Airlines (6 Sep-13 Sep).

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

The best time to book flights from Washington, D.C. to Ottawa is 74 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.

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

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

    For as low as C$ 524, Air Canada can have you in Ottawa from Washington, D.C. in 1h 31m. 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 (78%) or United Airlines (78%) 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$ 946 for a flight from Washington, D.C. to Ottawa. The cheapest flight overall is C$ 326 while the most popular route, (Washington, D.C. Dulles Intl - Ottawa) is currently priced at C$ 488.

  • 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, October is the cheapest month in which you can book a flight from Washington, D.C. to Ottawa (average of C$ 590). Flying from Washington, D.C. to Ottawa in February is currently the most expensive (average of C$ 902). 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
Prescott
Brockville
Wakefield
Pembroke
Smiths Falls

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Washington, D.C. to Ottawa?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Washington, D.C. to Ottawa. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from Washington, D.C. to Ottawa?

Cheapflights simply makes it quick and affordable to book flights from Washington, D.C. to Ottawa by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Washington, D.C. to Ottawa with no change fees?

Yes! Cheapflights helps users easily find flights from Washington, D.C. to Ottawa with no change fees.

Can Cheapflights notify me if prices for flights from Washington, D.C. to Ottawa become cheaper?

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.