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Cheap flights from Washington, D.C. to Ottawa from £150

WAS — YOW
1 Dec — 8 Dec1
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

Thu 31/1211:20 -
1 stop5h 18m
Mon 4/106:00 -
1 stop14h 10m
Deal found 31/10£315
Tue 17/1113:19 -
Nonstop1h 48m
Sun 22/1109:45 -
Nonstop2h 03m
Deal found 27/10£343
Fri 27/1113:19 -
Nonstop1h 48m
Tue 1/1214:00 -
1 stop6h 10m
Deal found 28/10£347
Tue 17/1108:37 -
1 stop4h 34m
Mon 23/1114:00 -
Nonstop1h 53m
Deal found 27/10£351
Tue 1/1208:45 -
1 stop5h 24m
Thu 3/1210:30 -
Nonstop1h 49m
Deal found 28/10£352
Tue 17/1111:20 -
1 stop6h 52m
Sun 22/1112:15 -
1 stop5h 29m
Deal found 27/10£352
Sat 12/1213:19 -
Nonstop1h 48m
Sat 19/1216:42 -
1 stop7h 56m
Deal found 28/10£355
Fri 4/1213:19 -
Nonstop1h 48m
Mon 7/1214:00 -
1 stop6h 10m
Deal found 30/10£376
Fri 4/1208:45 -
1 stop5h 24m
Sun 6/1219:50 -
1 stop14h 39m
Deal found 31/10£401
Tue 17/1112:55 -
Nonstop1h 34m
Mon 23/1106:00 -
1 stop4h 24m
Deal found 27/10£448
Tue 17/1109:05 -
1 stop4h 06m
Mon 23/1114:00 -
1 stop5h 58m
Deal found 27/10£458
Thu 19/1112:55 -
Nonstop1h 34m
Sun 22/1110:30 -
Nonstop1h 49m
Deal found 27/10£503

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

Round-trip from

£315

One-way from

£150

Popular in

December

Cheapest in

March

Average price

£351
Air Canada
  • Air Canada
  • 31/12-4/1
  • 2 total stops
  • 19h 28m total
  • Washington, D.C. to Ottawa
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Porter Airlines
  • Porter Airlines
  • 10/12-31/12
  • 1 total stop
  • 5h 18m total
  • Washington, D.C. to Ottawa
Search Deals
Highest demand for flights based on searches. 7% potential increase in price (£22 potential increase over avg. return price).
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Cheapest flight prices on average. 2% potential price decrease (£7 potential savings vs. average return price).
Search Deals
Average for round-trip flights in November 2026
Search Deals

Cheapflights Fare Finder

 
Use the filters below to find and compare flights from Washington, D.C. to Ottawa that are best for you.

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Route

Depart

Return

Price

Cheapest return flight

Washington, D.C.Ottawa

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

IADYOW

Washington, D.C. Dulles Intl

Mon 23/11

13:19-15:07

Nonstop1h 48m

Ottawa

Wed 31/12

00:00-00:00

Nonstop0h 00m

£152

Washington, D.C.Ottawa

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

IADYOW

Washington, D.C. Dulles Intl

Thu 3/12

17:37-19:27

Nonstop1h 50m

Ottawa

Wed 31/12

00:00-00:00

Nonstop0h 00m

£152

Washington, D.C.Ottawa

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

IADYOW

Washington, D.C. Dulles Intl

Thu 10/12

13:19-15:07

Nonstop1h 48m

Ottawa

Wed 31/12

00:00-00:00

Nonstop0h 00m

£181

Washington, D.C.Ottawa

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

IADYOW

Washington, D.C. Dulles Intl

Tue 15/12

17:37-19:27

Nonstop1h 50m

Ottawa

Wed 31/12

00:00-00:00

Nonstop0h 00m

£181

Washington, D.C.Ottawa

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

IADYOW

Washington, D.C. Dulles Intl

Sun 13/12

17:37-19:27

Nonstop1h 50m

Ottawa

Wed 31/12

00:00-00:00

Nonstop0h 00m

£181

Washington, D.C.Ottawa

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

IADYOW

Washington, D.C. Dulles Intl

Thu 28/1

17:37-19:27

Nonstop1h 50m

Ottawa

Wed 31/12

00:00-00:00

Nonstop0h 00m

£181

Washington, D.C.Ottawa

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

IADYOW

Washington, D.C. Dulles Intl

Wed 9/12

17:37-19:27

Nonstop1h 50m

Ottawa

Wed 31/12

00:00-00:00

Nonstop0h 00m

£181

Washington, D.C.Ottawa

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

IADYOW

Washington, D.C. Dulles Intl

Fri 11/12

13:19-15:07

Nonstop1h 48m

Ottawa

Wed 31/12

00:00-00:00

Nonstop0h 00m

£181

Washington, D.C.Ottawa

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

IADYOW

Washington, D.C. Dulles Intl

Wed 16/12

08:15-14:09

1 stop5h 54m

Ottawa

Wed 31/12

00:00-00:00

Nonstop0h 00m

£182
Fastest return journey

Washington, D.C.Ottawa

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

DCAYOW

Washington, D.C. Reagan-National

Wed 18/11

12:55-14:29

Nonstop1h 34m

Ottawa

Wed 31/12

00:00-00:00

Nonstop0h 00m

£217

Flights are sorted by cheapest return flights first.

Deals found on 27/10

Showing 1-10 of 35 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 £323). Flying from Washington, D.C. to Ottawa in February is currently the most expensive (average of £440). 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.

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 £316 and £429 in December.
The cheapest return price found within the last 5 days was £315 on Multiple Airlines (31 Dec–4 Jan).

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 73 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 is 1 daily inbound flight from Washington, D.C. from 0 different airlines.

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

    Airlines like United Airlines fly from Washington, D.C. to Ottawa in about 4h 34m. The time it takes to get you to your destination can typically vary by up to . Airlines will cover a distance of 449 mi.

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

    Consider Republic Airways (90%), Air Canada (84%) or United Airlines (84%) 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 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 £323). Flying from Washington, D.C. to Ottawa in February is currently the most expensive (average of £440). 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

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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