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Cheap flights from Washington, D.C. to Ottawa from £230

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 23/3. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — YOW
16 Nov — 23 Nov1
1 adult
1 adult, Economy

Cheapflights Tip: The best prices from Washington, D.C. to Ottawa are usually found in January or November, booked 57 days in advance, depart on a Tuesday or Monday and return on a Monday

Cheap 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 17 October 2025.

Round-trip from

£365

One-way from

£230

Popular in

March

Cheapest in

January

Average price

£315
Air Canada
  • Air Canada
  • 13/11-16/11
  • 2 total stops
  • 16h 07m total
  • Washington, D.C. to Ottawa
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23/3
  • 23/3
  • 1 total stop
  • 8h 15m total
  • Washington, D.C. to Ottawa
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Highest demand for flights based on searches. 2% potential increase in price (£5 potential increase over avg. return price).
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Cheapest flight prices on average. 2% potential price decrease (£5 potential savings vs. average return price).
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Average for round-trip flights in October 2025
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Find 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 17 October 2025.

Thu 13/1110:30DCA - YOW
1 stop6h 42mMultiple Airlines
Sun 16/1110:20YOW - DCA
1 stop9h 25mMultiple Airlines
Deal found 15/10£365
Fri 7/1112:55DCA - YOW
Nonstop1h 35mUnited Airlines
Sun 9/1110:30YOW - DCA
Nonstop1h 49mUnited Airlines
Deal found 15/10£429
Wed 31/1207:00DCA - YOW
1 stop9h 27mMultiple Airlines
Sun 4/117:59YOW - DCA
1 stop15h 29mMultiple Airlines
Deal found 15/10£498
Fri 24/1006:00DCA - YOW
1 stop10h 43mMultiple Airlines
Fri 31/1017:55YOW - DCA
1 stop15h 34mMultiple Airlines
Deal found 14/10£599
Wed 29/1006:00DCA - YOW
1 stop7h 32mMultiple Airlines
Thu 30/1006:00YOW - DCA
1 stop8h 25mMultiple Airlines
Deal found 16/10£645
Fri 24/1007:00DCA - YOW
1 stop9h 43mMultiple Airlines
Sat 25/1006:05YOW - DCA
1 stop13h 11mMultiple Airlines
Deal found 15/10£696
Sat 25/1007:00DCA - YOW
1 stop15h 05mMultiple Airlines
Tue 28/1006:00YOW - DCA
1 stop13h 30mMultiple Airlines
Deal found 16/10£711
Wed 29/1015:30DCA - YOW
1 stop5h 48mUnited Airlines
Thu 30/1010:30YOW - DCA
Nonstop1h 49mUnited Airlines
Deal found 16/10£722
Fri 24/1012:55DCA - YOW
Nonstop1h 31mUnited Airlines
Fri 31/1010:30YOW - DCA
Nonstop1h 49mUnited Airlines
Deal found 14/10£723
Sat 25/1010:00DCA - YOW
1 stop12h 05mMultiple Airlines
Sun 26/1010:30YOW - DCA
Nonstop1h 49mMultiple Airlines
Deal found 15/10£726

Cheapflights Fare Finder

 
Customise 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 858,174 searches. Data last updated 17 October 2025.
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

Washington, D.C.Ottawa

DCA - YOW

DCAYOW

Washington, D.C. Reagan-National

Thu 13/11

10:30-17:12

1 stop6h 42m

Ottawa

Sun 16/11

10:20-19:45

1 stop9h 25m

£365

Washington, D.C.Ottawa

DCA - YOW

DCAYOW

Washington, D.C. Reagan-National

Fri 7/11

12:55-14:30

Nonstop1h 35m

Ottawa

Mon 10/11

10:30-12:19

Nonstop1h 49m

£429

Washington, D.C.Ottawa

DCA - YOW

DCAYOW

Washington, D.C. Reagan-National

Fri 7/11

12:55-14:30

Nonstop1h 35m

Ottawa

Sun 9/11

10:30-12:19

Nonstop1h 49m

£429

Washington, D.C.Ottawa

DCA - YOW

DCAYOW

Washington, D.C. Reagan-National

Fri 7/11

12:55-14:30

Nonstop1h 35m

Ottawa

Tue 11/11

10:30-12:19

Nonstop1h 49m

£429

Washington, D.C.Ottawa

DCA - YOW

DCAYOW

Washington, D.C. Reagan-National

Wed 31/12

07:00-16:27

1 stop9h 27m

Ottawa

Sun 4/1

17:59-09:28

1 stop15h 29m

£498

Washington, D.C.Ottawa

DCA - YOW

DCAYOW

Washington, D.C. Reagan-National

Wed 29/10

06:00-13:32

1 stop7h 32m

Ottawa

Thu 30/10

06:00-14:25

1 stop8h 25m

£645

Washington, D.C.Ottawa

DCA - YOW

DCAYOW

Washington, D.C. Reagan-National

Wed 29/10

15:30-21:18

1 stop5h 48m

Ottawa

Thu 30/10

10:30-12:19

Nonstop1h 49m

£722

Washington, D.C.Ottawa

DCA - YOW

DCAYOW

Washington, D.C. Reagan-National

Mon 27/10

09:05-16:32

1 stop7h 27m

Ottawa

Tue 28/10

06:00-17:25

1 stop11h 25m

£760

Washington, D.C.Ottawa

DCA - YOW

DCAYOW

Washington, D.C. Reagan-National

Mon 23/3

08:00-16:15

1 stop8h 15m

£230

Washington, D.C.Ottawa

DCA - YOW

DCAYOW

Washington, D.C. Reagan-National

Thu 30/10

06:00-16:32

1 stop10h 32m

£257

Flights are sorted by cheapest return flights first.

Deals found on 14/10

Showing 1-10 of 15 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 return 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 return flight from Washington, D.C. to Ottawa. Price data was last updated on 10 October 2025.

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 57 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, September is the cheapest month in which you can book a flight from Washington, D.C. to Ottawa (average of £84). Flying from Washington, D.C. to Ottawa in June is currently the most expensive (average of £159). 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 17 October 2025.

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

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 17 October 2025.

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

How much does it cost for a return flight from Washington, D.C. to Ottawa?

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.?

    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 8 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 fly from Washington, D.C. to Ottawa in about 1h 35m. The time it takes to get you to your destination is usually consistent. Airlines will cover a distance of 452 mi. Generally, flights for this route are direct.

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

    Consider GoJet (80%), Air Canada (80%) or United Airlines (80%) 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, September is the cheapest month in which you can book a flight from Washington, D.C. to Ottawa (average of £84). Flying from Washington, D.C. to Ottawa in June is currently the most expensive (average of £159). 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

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