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Washington, D.C.

$126+ Cheap flights from Ottawa (YOW) to Washington, D.C. (WAS)

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 2/14. Fares are subject to change and may not be available on all flights or dates of travel.
YOW — WAS
Feb 13 — Feb 201
Fri 2/13
Fri 2/20
1 adult, Economy
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1. Tell us where you want to go

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Cheapflights Tip: The best prices from Ottawa to Washington, D.C. are usually found in March or April, booked 26 days in advance, depart on a Friday or Monday and return on a Saturday

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

Discover tips and strategies to find the most affordable flight options for your journey from Ottawa (YOW) to Washington, D.C. (WAS). 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 January 14, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$229
(Trip.com)

One-way from

$126
(Kiwi.com)

Popular in

November

Cheapest in

March

Average price

$346

Good round-trip deal

$362 or less

Good one-way deal

$161 or less
Provider with most accurate pricing for Ottawa-Washington, D.C. (WAS) flight deals.
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Provider most trusted by Cheapflights users for Ottawa-Washington, D.C. (WAS) flights.
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From Ottawa to Washington, D.C. (WAS)
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One-way flight from Ottawa to Washington, D.C. (WAS)
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Highest demand for flights based on searches. 7% potential increase in price ($27 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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Price to beat on a round-trip flight from Ottawa to Washington, D.C. (WAS).
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Price to beat on a one-way flight from Ottawa to Washington, D.C. (WAS).
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Find flight deals from Ottawa to Washington, D.C.

Cheapest flights from Ottawa to Washington, D.C.
Explore the most affordable flight options available from Ottawa to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 14, 2026.

This Trip.com deal was found by Cheapflights users on 1/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/57:00 am
YOW
-
IAD
1 stop3h 22m
Porter Airlines
Sun 2/811:40 am
IAD
-
YOW
1 stop3h 24m
Porter Airlines
Deal found 1/14$229
This Trip.com deal was found by Cheapflights users on 1/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/510:30 am
YOW
-
DCA
Nonstop1h 49m
Air Canada
Sun 2/812:55 pm
DCA
-
YOW
Nonstop1h 35m
Air Canada
Deal found 1/14$229
This FlightHub deal was found by Cheapflights users on 1/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/307:00 am
YOW
-
IAD
1 stop3h 19m
Porter Airlines
Sun 2/111:40 am
IAD
-
YOW
1 stop3h 24m
Porter Airlines
Deal found 1/13$233
This United Airlines deal was found by Cheapflights users on 1/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/307:27 pm
YOW
-
IAD
Nonstop1h 58m
United Airlines
Sun 2/110:10 pm
IAD
-
YOW
Nonstop1h 44m
United Airlines
Deal found 1/13$234
This Trip.com deal was found by Cheapflights users on 1/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/2910:30 am
YOW
-
DCA
Nonstop1h 49m
Air Canada
Sun 2/16:00 am
DCA
-
YOW
1 stop3h 41m
Air Canada
Deal found 1/14$234
This Trip.com deal was found by Cheapflights users on 1/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/1212:10 pm
YOW
-
IAD
1 stop5h 04m
Porter Airlines
Sun 3/1511:40 am
IAD
-
YOW
1 stop5h 49m
Porter Airlines
Deal found 1/13$240
This Mytrip deal was found by Cheapflights users on 1/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/297:00 am
YOW
-
IAD
1 stop3h 19m
Porter Airlines
Sun 2/111:40 am
IAD
-
YOW
1 stop3h 24m
Porter Airlines
Deal found 1/14$245
This Air Canada deal was found by Cheapflights users on 1/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/42:50 pm
YOW
-
IAD
1 stop6h 04m
Air Canada
Wed 2/259:00 am
IAD
-
YOW
1 stop4h 18m
Air Canada
Deal found 1/14$255
This United Airlines deal was found by Cheapflights users on 1/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/35:55 pm
YOW
-
IAD
1 stop5h 26m
United Airlines
Mon 2/98:29 am
IAD
-
YOW
1 stop5h 03m
United Airlines
Deal found 1/13$259
This United Airlines deal was found by Cheapflights users on 1/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/37:40 pm
YOW
-
IAD
Nonstop1h 45m
United Airlines
Sun 4/55:10 pm
IAD
-
YOW
Nonstop1h 50m
United Airlines
Deal found 1/14$260
This Air Canada deal was found by Cheapflights users on 1/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/310:25 am
YOW
-
DCA
Nonstop1h 36m
Air Canada
Thu 4/912:55 pm
DCA
-
YOW
Nonstop1h 32m
Air Canada
Deal found 1/13$260
This United Airlines deal was found by Cheapflights users on 1/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/297:27 pm
YOW
-
IAD
Nonstop1h 58m
United Airlines
Sun 2/110:10 pm
IAD
-
YOW
Nonstop1h 44m
United Airlines
Deal found 1/14$261

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ottawa to Washington, D.C. 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 2,558,603 searches. Data last updated January 14, 2026.
Use the filters below to find and compare flights from Ottawa to Washington, D.C. that are best for you.

Fly from

Ottawa

Fly to

Washington, D.C.

Route

Depart

Return

Price

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Thu 2/5

7:00 am-10:22 am

1 stop3h 22m

Washington, D.C. Dulles Intl

Sun 2/8

11:40 am-3:04 pm

1 stop3h 24m

$229

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Fri 1/30

7:00 am-10:19 am

1 stop3h 19m

Washington, D.C. Dulles Intl

Sun 2/1

11:40 am-3:04 pm

1 stop3h 24m

$233

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Fri 1/30

7:27 pm-9:25 pm

Nonstop1h 58m

Washington, D.C. Dulles Intl

Sun 2/1

10:10 pm-11:54 pm

Nonstop1h 44m

$234

OttawaWashington, D.C.

YOW - DCA

YOWDCA

Ottawa

Thu 1/29

10:30 am-12:19 pm

Nonstop1h 49m

Washington, D.C. Reagan-National

Sun 2/1

6:00 am-9:41 am

1 stop3h 41m

$234

OttawaWashington, D.C.

YOW - DCA

YOWDCA

Ottawa

Thu 2/5

12:00 pm-6:05 pm

1 stop6h 05m

Washington, D.C. Reagan-National

Sun 2/8

12:55 pm-2:30 pm

Nonstop1h 35m

$237

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Tue 2/3

7:27 pm-9:25 pm

Nonstop1h 58m

Washington, D.C. Dulles Intl

Mon 2/9

5:38 pm-9:56 pm

1 stop4h 18m

$244

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Wed 2/4

9:45 am-11:49 am

Nonstop2h 04m

Washington, D.C. Dulles Intl

Wed 2/25

1:02 pm-9:18 pm

1 stop8h 16m

$244

OttawaWashington, D.C.

YOW - DCA

YOWDCA

Ottawa

Tue 2/3

10:30 am-12:19 pm

Nonstop1h 49m

Washington, D.C. Reagan-National

Mon 2/9

12:55 pm-2:30 pm

Nonstop1h 35m

$260

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Fri 2/13

2:15 pm-4:11 pm

Nonstop1h 56m

Washington, D.C. Dulles Intl

Tue 2/17

5:40 pm-9:56 pm

1 stop4h 16m

$260

OttawaWashington, D.C.

YOW - DCA

YOWDCA

Ottawa

Tue 3/10

10:30 am-12:19 pm

Nonstop1h 49m

Washington, D.C. Reagan-National

Fri 3/13

12:55 pm-2:30 pm

Nonstop1h 35m

$260

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/13

Showing 1-10 of 51 results
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Compare providers for flights from Ottawa to Washington, D.C.

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Ottawa to Washington, D.C. in January.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Ottawa-Washington, D.C. flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Ottawa-Washington, D.C. flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Ottawa-Washington, D.C. flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Ottawa-Washington, D.C. flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Ottawa-Washington, D.C. flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Ottawa to Washington, D.C.

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. from Ottawa 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 Ottawa to Washington, D.C.

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

Use this chart to determine the optimal time to book a round-trip flight from Ottawa to Washington, D.C.. Price data was last updated on January 9, 2026.

The price you pay for your flight from Ottawa to Washington, D.C. may vary depending on when you book. For the best chance of a lower fare, look to book 26 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 Ottawa to Washington, D.C.?

Currently, April is the cheapest month in which you can book a flight from Ottawa to Washington, D.C. (average of $73). Flying from Ottawa to Washington, D.C. in July is currently the most expensive (average of $238). 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 YOW to WAS?

Find hourly flight availability from Ottawa to Washington, D.C.. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated January 14, 2026.

When flying from Ottawa to Washington, D.C., 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 Ottawa to Washington, D.C.

Explore weekly flight availability from Ottawa to Washington, D.C.. 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 January 14, 2026.

The most flights from YOW to WAS are scheduled on a Monday (8 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (6 on average).

Reviews of airlines servicing Washington, D.C.

Get insights into the airlines that provide service to Washington, D.C.. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Washington, D.C.. Reviews last updated January 14, 2026.
See what other customers who have flown with United Airlines and Air Canada from Ottawa to Washington, D.C. have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,156 reviews

Comfort

7.3

Boarding

7.7

Entertainment

7.1

Crew

8.1

Food

6.6

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
United Airlines
7.4
Good
9,156 reviews
United Airlines
7.4
Good
9,156 reviews

Comfort

7.3

Boarding

7.7

Entertainment

7.1

Crew

8.1

Food

6.6

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family
Air Canada
7.1
Good
10,619 reviews
United Airlines
7.4
Good
9,156 reviews

Comfort

7.3

Boarding

7.7

Entertainment

7.1

Crew

8.1

Food

6.6

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Dane,Jan 2026

TYS - IAD

It was a short flight, so no time for amenities. Just glad everything was quick and easy from boarding to arriving at my destination with my family

Related info for your journey

Find useful and relevant information for your journey from Ottawa to Washington, D.C.. 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 from for flights from Ottawa to Washington, D.C.?

    If you book a flight to Washington, D.C. from Ottawa, you will be flying from Ottawa, which is the city’s only airport. Ottawa (YOW) is located 6.6 mi from the center of Ottawa. There are 7 flights from Ottawa to Washington, D.C. per day from 2 different airlines.

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

    Porter Airlines, United Airlines, and Air Canada can get you from Ottawa to Washington, D.C. in just under 1h 49m. Your travel time can differ by up to 1h 33m. There are 452 mi between Ottawa and Washington, D.C.. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from Ottawa to Washington, D.C. round-trip?

    United Airlines, at $281, was found to be the cheapest airline from Ottawa to Washington, D.C.. An alternate airline flying to your destination would be Air Canada. These flights start at 18% lower than the current average price 3 months from now.

  • What are the most popular routes from Ottawa to Washington, D.C.?

    While some choose either Ottawa - Washington, D.C. Reagan-National or Ottawa - Baltimore/Washington, Ottawa - Washington, D.C. Dulles Intl is the most popular route from Ottawa to Washington, D.C..

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

    Consider Republic Airways (80%), Avianca (74%) or United Airlines (69%) when booking your flight. These represent the most reliable airlines when flying from Ottawa to Washington, D.C..

  • What are the cheapest flights from Ottawa to Washington, D.C.?

    While on average a flight from Ottawa to Washington, D.C. is generally $487, our data shows the cheapest flight currently is $175. When looking at the most popular route, (Ottawa - Washington, D.C. Dulles Intl), you can expect to pay $228 for that flight.

  • Can I find deals for flights from Ottawa to Washington, D.C. that include hotel bookings?

    Yes. In addition to deals on Ottawa to Washington, D.C. flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ottawa to Washington, D.C.?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ottawa to Washington, D.C..

  • Can I find deals for business class flights from Ottawa to Washington, D.C.?

    Yes. Cheapflights offers flight deals from Ottawa to Washington, D.C. 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 Ottawa to Washington, D.C.?

    Currently, April is the cheapest month in which you can book a flight from Ottawa to Washington, D.C. (average of $73). Flying from Ottawa to Washington, D.C. in July is currently the most expensive (average of $238). 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

Traveling to a place near Washington, D.C.?

Book flights to Washington, D.C. if you plan to visit one of these locations
Alexandria
Woodbridge
Tysons
Arlington
Owings Mills
Springfield
Silver Spring
Hanover
Fredericksburg
Linthicum Heights
Rockville
Laurel
Towson
Manassas
National Harbor
Largo
Bowie
McLean
Clinton
Herndon

Browse thousands of different options on Cheapflights for your next trip

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Top 2 airlines flying from Ottawa to Washington, D.C.

Discover the top 2 airlines that operate flights from Ottawa to Washington, D.C.. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 14, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$281Average$465FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$296Average$398FlexibilityNo cancel feeOn-time67%

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