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Cheap flights from Washington, D.C. to Ottawa from £147

WAS — YOW
29 Sep — 6 Oct1
1 adult
1 adult, Economy, 0 bags

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

Fri 25/906:00 -
1 stop4h 18m
Sun 27/910:40 -
Nonstop1h 34m
Deal found 27/8£278
Fri 25/912:55 -
Nonstop1h 32m
Sat 26/917:50 -
1 stop4h 00m
Deal found 27/8£284
Wed 23/908:30 -
1 stop5h 29m
Wed 23/917:57 -
1 stop4h 02m
Deal found 26/8£296
Thu 24/907:46 -
1 stop9h 30m
Thu 24/920:05 -
1 stop12h 50m
Deal found 26/8£325
Thu 24/912:55 -
Nonstop1h 32m
Sat 26/911:10 -
1 stop4h 30m
Deal found 27/8£327
Mon 21/912:55 -
Nonstop1h 32m
Mon 21/917:57 -
1 stop4h 02m
Deal found 26/8£333
Thu 17/908:30 -
1 stop5h 29m
Mon 21/906:05 -
1 stop3h 41m
Deal found 27/8£335
Thu 24/911:57 -
1 stop5h 19m
Sun 27/906:05 -
1 stop5h 54m
Deal found 28/8£337

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

Round-trip from

£278

One-way from

£147

Popular in

December

Cheapest in

March

Average price

£316

Good one-way deal

£474 or less
Air Canada
  • Air Canada
  • 25/9-27/9
  • 1 total stop
  • 5h 52m total
  • Washington, D.C. to Ottawa
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United Airlines
  • United Airlines
  • 25/10
  • 1 total stop
  • 5h 29m total
  • Washington, D.C. to Ottawa
Search Deals
Highest demand for flights based on searches. 6% potential increase in price (£19 potential increase over avg. return price).
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Cheapest flight prices on average. 2% potential price decrease (£6 potential savings vs. average return price).
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Average for round-trip flights in August 2026
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Price to beat on a one-way flight from Washington, D.C. (WAS) to Ottawa.
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Cheapflights Fare Finder

 
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 return flight

Washington, D.C.Ottawa

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

DCAYOW

Washington, D.C. Reagan-National

Sat 26/9

06:30-14:09

1 stop7h 39m

Ottawa

Sat 26/9

18:01-21:59

1 stop3h 58m

£296
Fastest return journey

Washington, D.C.Ottawa

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

DCAYOW

Washington, D.C. Reagan-National

Fri 25/9

12:55-14:27

Nonstop1h 32m

Ottawa

Sat 26/9

10:40-12:14

Nonstop1h 34m

£325

Washington, D.C.Ottawa

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

DCAYOW

Washington, D.C. Reagan-National

Mon 21/9

12:55-14:27

Nonstop1h 32m

Ottawa

Mon 21/9

17:57-21:59

1 stop4h 02m

£333

Washington, D.C.Ottawa

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

DCAYOW

Washington, D.C. Reagan-National

Wed 7/10

06:30-13:59

1 stop7h 29m

Ottawa

Tue 13/10

18:01-21:59

1 stop3h 58m

£335

Washington, D.C.Ottawa

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

DCAYOW

Washington, D.C. Reagan-National

Thu 17/9

08:30-13:59

1 stop5h 29m

Ottawa

Mon 21/9

06:05-09:46

1 stop3h 41m

£335

Washington, D.C.Ottawa

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

DCAYOW

Washington, D.C. Reagan-National

Thu 24/9

11:57-17:16

1 stop5h 19m

Ottawa

Sun 27/9

06:05-11:59

1 stop5h 54m

£337

Washington, D.C.Ottawa

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

DCAYOW

Washington, D.C. Reagan-National

Thu 29/10

09:05-13:11

1 stop4h 06m

Ottawa

Tue 3/11

15:10-21:57

1 stop6h 47m

£343

Washington, D.C.Ottawa

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

DCAYOW

Washington, D.C. Reagan-National

Wed 30/9

11:45-16:38

1 stop4h 53m

Ottawa

Sat 3/10

17:20-22:52

1 stop5h 32m

£343

Washington, D.C.Ottawa

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

DCAYOW

Washington, D.C. Reagan-National

Thu 24/9

12:55-14:27

Nonstop1h 32m

Ottawa

Thu 24/9

18:01-07:49

1 stop13h 48m

£343

Washington, D.C.Ottawa

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

DCAYOW

Washington, D.C. Reagan-National

Wed 23/9

12:55-14:27

Nonstop1h 32m

Ottawa

Wed 23/9

17:57-07:49

1 stop13h 52m

£352

Flights are sorted by cheapest return flights first.

Deals found on 29/8

Showing 1-10 of 15 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 return price

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, March is the cheapest month in which you can book a flight from Washington, D.C. to Ottawa (average of £324). Flying from Washington, D.C. to Ottawa in February is currently the most expensive (average of £478). 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?

When flying from Washington, D.C. to Ottawa, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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

The most flights from WAS to YOW are scheduled on a Monday (11 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (9 on average).

How much does it cost for a return flight 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 £324 and £456 in September.
The cheapest return price found within the last 5 days was £278 on Air Canada (25 Sept–27 Sept).

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

The price you pay for your flight from Washington, D.C. to Ottawa may vary depending on when you book. For the best chance of a lower fare, look to book 76 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

Related info for your journey

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

    Located just 6.6 mi from the city center, Ottawa is the airport most travelers will use when flying to Ottawa from Washington, D.C.. Booking flights from Washington, D.C. to Ottawa (YOW) should be relatively easy as there are 10 daily inbound flights from Washington, D.C. from 0 different airlines.

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

    Airlines like United Airlines and Air Canada fly from Washington, D.C. to Ottawa in about 1h 32m. The time it takes to get you to your destination can typically vary by up to 6h 07m. Airlines will cover a distance of 452 mi. Both multi-stop and direct flights can be found to your destination and back.

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

    Consider GoJet (76%), United Airlines (75%) or Air Canada (74%) 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?

    The cheapest flight price from Washington, D.C. to Ottawa is £474. On average you can expect to pay £474. The most popular route, (Washington, D.C. Reagan-National - Ottawa), can usually be booked for £284.

  • 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 holiday 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 £324). Flying from Washington, D.C. to Ottawa in February is currently the most expensive (average of £478). 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

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Washington, D.C. to Ottawa

Dulles Intl to Pearson Intl flights

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