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Cheap flights from Washington, D.C. to Ottawa from £181

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 2/1. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — YOW
11 gen — 18 gen1
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
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 12 dicembre 2025.

ven 26/1207:00DCA - YOW
1 stop6h 32mUnited Airlines
mer 31/1217:09YOW - DCA
1 stop6h 50mUnited Airlines
Deal found 9/12£407
sab 27/1206:30DCA - YOW
1 stop14h 48mUnited Airlines
mar 30/1206:00YOW - DCA
1 stop6h 24mUnited Airlines
Deal found 9/12£444
ven 26/1207:00DCA - YOW
1 stop6h 32mUnited Airlines
mar 30/1206:00YOW - DCA
1 stop6h 24mUnited Airlines
Deal found 9/12£499
mar 30/1207:00DCA - YOW
1 stop6h 32mUnited Airlines
sab 3/115:10YOW - DCA
1 stop6h 42mUnited Airlines
Deal found 11/12£639
dom 21/1207:00DCA - YOW
2 stops17h 42mDelta
mar 6/105:40YOW - DCA
2 stops13h 10mDelta
Deal found 9/12£809
ven 19/1212:55DCA - YOW
Nonstop1h 35mUnited Airlines
lun 5/110:30YOW - DCA
Nonstop1h 49mUnited Airlines
Deal found 10/12£881
mar 23/1212:55DCA - YOW
Nonstop1h 35mUnited Airlines
dom 28/1206:00YOW - DCA
1 stop6h 24mUnited Airlines
Deal found 10/12£892
mar 30/1215:05DCA - YOW
2 stops9h 37mWestJet
sab 3/105:40YOW - DCA
2 stops29h 57mWestJet
Deal found 11/12£977
ven 12/1211:05DCA - YOW
1 stop5h 27mUnited Airlines
dom 14/1210:30YOW - DCA
Nonstop1h 49mUnited Airlines
Deal found 10/12£1,006

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 12 dicembre 2025.

Round-trip from

£279

One-way from

£181

Popular in

March

Cheapest in

January

Average price

£317
United Airlines
  • United Airlines
  • 7/1-8/1
  • 2 total stops
  • 9h 45m total
  • Washington, D.C. to Ottawa
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United Airlines
  • United Airlines
  • 2/1
  • 1 total stop
  • 6h 32m total
  • Washington, D.C. to Ottawa
Search Deals
Highest demand for flights based on searches. 1% potential increase in price (£3 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£6 potential savings vs. average return price).
Search Deals
Average for round-trip flights in December 2025
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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 12 dicembre 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

mer 7/1

12:00-17:12

1 stop5h 12m

Ottawa

gio 8/1

06:00-10:33

1 stop4h 33m

£279

Washington, D.C.Ottawa

DCA - YOW

DCAYOW

Washington, D.C. Reagan-National

ven 26/12

07:00-13:32

1 stop6h 32m

Ottawa

mer 31/12

17:09-23:59

1 stop6h 50m

£407

Washington, D.C.Ottawa

DCA - YOW

DCAYOW

Washington, D.C. Reagan-National

sab 27/12

06:30-21:18

1 stop14h 48m

Ottawa

mar 30/12

06:00-12:24

1 stop6h 24m

£444

Washington, D.C.Ottawa

DCA - YOW

DCAYOW

Washington, D.C. Reagan-National

gio 15/1

08:50-00:42

2 stops15h 52m

Ottawa

dom 18/1

05:40-18:50

2 stops13h 10m

£494

Washington, D.C.Ottawa

DCA - YOW

DCAYOW

Washington, D.C. Reagan-National

dom 28/12

10:10-16:27

1 stop6h 17m

Ottawa

mar 30/12

06:00-12:24

1 stop6h 24m

£499

Washington, D.C.Ottawa

DCA - YOW

DCAYOW

Washington, D.C. Reagan-National

ven 26/12

07:00-13:32

1 stop6h 32m

Ottawa

mar 30/12

06:00-12:24

1 stop6h 24m

£499

Washington, D.C.Ottawa

DCA - YOW

DCAYOW

Washington, D.C. Reagan-National

dom 25/1

08:50-00:42

2 stops15h 52m

Ottawa

dom 1/2

05:40-18:50

2 stops13h 10m

£521

Washington, D.C.Ottawa

DCA - YOW

DCAYOW

Washington, D.C. Reagan-National

mar 28/4

11:00-00:22

2 stops13h 22m

Ottawa

lun 4/5

05:55-07:22

2 stops25h 27m

£549

Washington, D.C.Ottawa

DCA - YOW

DCAYOW

Washington, D.C. Reagan-National

sab 2/5

08:30-00:22

2 stops15h 52m

Ottawa

mar 5/5

05:55-22:59

2 stops17h 04m

£549

Washington, D.C.Ottawa

DCA - YOW

DCAYOW

Washington, D.C. Reagan-National

mar 28/4

11:00-00:22

2 stops13h 22m

Ottawa

ven 1/5

05:55-22:59

2 stops17h 04m

£549

Flights are sorted by cheapest return flights first.

Deals found on 10/12

Showing 1-10 of 17 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 5 December 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, March 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 £160). 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 12 dicembre 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 12 dicembre 2025.

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

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 and Delta fly from Washington, D.C. to Ottawa in about 5h 12m. The time it takes to get you to your destination can typically vary by up to 10h 40m. 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 Republic Airways (86%), United Airlines (81%) or GoJet (77%) 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 £84). Flying from Washington, D.C. to Ottawa in June is currently the most expensive (average of £160). 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
Brockville
Smiths Falls

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Alternative routes for Washington, D.C. to Ottawa

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Fly with Cheapflights

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

Cheapflights makes it easy to find Washington, D.C. to Ottawa flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

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

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Ottawa from Washington, D.C..

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

Yes, we can. To see specific flights from Washington, D.C. to Ottawa with no change fees, users can toggle flexible booking options after using the search form above to find flights.

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

Yes! Start tracking prices for Washington, D.C. to Ottawa flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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