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Washington, D.C.

$156+ 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 7/27. Fares are subject to change and may not be available on all flights or dates of travel.
YOW — WAS
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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Cheapflights Tip: The best prices from Ottawa to Washington, D.C. are usually found in March or April, booked 58 days in advance, depart on a Thursday or Friday and return on a Monday

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 June 12, 2025.

Round-trip from

$295
(Air Canada)

One-way from

$156
(Kiwi.com)

Popular in

October

Cheapest in

March

Average price

$337

Good round-trip deal

$304 or less

Good one-way deal

$182 or less
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. 12% potential increase in price ($49 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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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 June 12, 2025.

This Air Canada deal was found by Cheapflights users on 6/11. 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.
Sat 7/266:00 amYOW - DCA
1 stop4h 18mAir Canada
Sat 8/26:00 amDCA - YOW
1 stop4h 25mAir Canada
Deal found 6/11$295
This FlightHub deal was found by Cheapflights users on 6/11. 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.
Thu 6/269:35 amYOW - IAD
1 stop5h 31mPorter Airlines
Sun 6/2911:35 amIAD - YOW
1 stop4h 58mPorter Airlines
Deal found 6/11$300
This Air Canada deal was found by Cheapflights users on 6/11. 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.
Thu 7/35:15 amYOW - IAD
1 stop4h 22mAir Canada
Sun 7/610:20 amIAD - YOW
1 stop4h 45mAir Canada
Deal found 6/11$308
This Kiwi.com deal was found by Cheapflights users on 6/12. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/247:00 amYOW - IAD
1 stop3h 16mMultiple Airlines
Sun 7/274:10 pmIAD - YOW
1 stop4h 28mMultiple Airlines
Deal found 6/12$327
This United Airlines deal was found by Cheapflights users on 6/11. 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.
Wed 7/232:45 pmYOW - IAD
Nonstop1h 35mUnited Airlines
Mon 7/285:25 pmIAD - YOW
1 stop4h 40mUnited Airlines
Deal found 6/11$345
This United Airlines deal was found by Cheapflights users on 6/9. 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 7/46:33 amYOW - DCA
1 stop5h 26mUnited Airlines
Tue 7/88:30 amDCA - YOW
1 stop5h 34mUnited Airlines
Deal found 6/9$359
This Kiwi.com deal was found by Cheapflights users on 6/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/285:00 pmYOW - BWI
1 stop14h 30mMultiple Airlines
Sun 8/36:20 pmBWI - YOW
1 stop22h 38mMultiple Airlines
Deal found 6/10$374
This Flysmarter deal was found by Cheapflights users on 6/10. 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 Flysmarter is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/310:25 amYOW - DCA
Nonstop1h 38mMultiple Airlines
Sun 7/612:55 pmDCA - YOW
Nonstop1h 32mMultiple Airlines
Deal found 6/10$375
This FlightHub deal was found by Cheapflights users on 6/11. 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 9/56:00 amYOW - IAD
1 stop11h 50mWestJet
Mon 9/86:45 pmIAD - YOW
2 stops21h 34mWestJet
Deal found 6/11$486
This United Airlines deal was found by Cheapflights users on 6/12. 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 8/126:33 amYOW - BWI
1 stop7h 15mUnited Airlines
Thu 8/146:15 amBWI - YOW
1 stop10h 51mUnited Airlines
Deal found 6/12$552
This FlightHub deal was found by Cheapflights users on 6/12. 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 8/297:15 pmYOW - BWI
2 stops25h 36mWestJet
Mon 9/16:15 amBWI - YOW
2 stops18h 25mWestJet
Deal found 6/12$555
This FlightHub deal was found by Cheapflights users on 6/12. 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 9/195:55 amYOW - DCA
2 stops17h 01mWestJet
Mon 9/222:00 pmDCA - YOW
2 stops10h 22mWestJet
Deal found 6/12$580

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 June 12, 2025.
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 - DCA

YOWDCA

Ottawa

Sat 7/26

6:00 am-10:18 am

1 stop4h 18m

Washington, D.C. Reagan-National

Sat 8/2

6:00 am-10:25 am

1 stop4h 25m

$295

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Thu 6/26

9:35 am-3:06 pm

1 stop5h 31m

Washington, D.C. Dulles Intl

Sun 6/29

11:35 am-4:33 pm

1 stop4h 58m

$300

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Thu 7/3

5:15 am-9:37 am

1 stop4h 22m

Washington, D.C. Dulles Intl

Sun 7/6

10:20 am-3:05 pm

1 stop4h 45m

$308

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Thu 7/24

7:00 am-10:16 am

1 stop3h 16m

Washington, D.C. Dulles Intl

Sun 7/27

4:10 pm-8:38 pm

1 stop4h 28m

$327

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Thu 7/3

2:45 pm-4:20 pm

Nonstop1h 35m

Washington, D.C. Dulles Intl

Sun 7/6

5:10 pm-6:52 pm

Nonstop1h 42m

$336

OttawaWashington, D.C.

YOW - DCA

YOWDCA

Ottawa

Thu 7/3

6:33 am-5:01 pm

1 stop10h 28m

Washington, D.C. Reagan-National

Sun 7/6

12:55 pm-2:27 pm

Nonstop1h 32m

$337

OttawaWashington, D.C.

YOW - DCA

YOWDCA

Ottawa

Fri 7/4

6:33 am-11:59 am

1 stop5h 26m

Washington, D.C. Reagan-National

Tue 7/8

8:30 am-2:04 pm

1 stop5h 34m

$359

OttawaBaltimore

YOW - BWI

YOWBWI

Ottawa

Mon 7/28

5:00 pm-7:30 am

1 stop14h 30m

Baltimore/Washington

Sun 8/3

6:20 pm-4:58 pm

1 stop22h 38m

$374

OttawaWashington, D.C.

YOW - IAD

YOWIAD

Ottawa

Fri 9/5

6:00 am-5:50 pm

1 stop11h 50m

Washington, D.C. Dulles Intl

Mon 9/8

6:45 pm-4:19 pm

2 stops21h 34m

$486

OttawaBaltimore

YOW - BWI

YOWBWI

Ottawa

Tue 8/12

6:33 am-1:48 pm

1 stop7h 15m

Baltimore/Washington

Thu 8/14

6:15 am-5:06 pm

1 stop10h 51m

$552

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 29 results
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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 June 9, 2025.

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 58 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, August is the cheapest month in which you can book a flight from Ottawa to Washington, D.C. (average of $241). Flying from Ottawa to Washington, D.C. in March is currently the most expensive (average of $290). 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 June 12, 2025.

Unlike at noon, when flights are generally more expensive, you can save up to 53% on flights from Ottawa to Washington, D.C. by exploring options for tickets in the afternoon.

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 June 12, 2025.

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

Rainfall in Washington, D.C. by month

Plan your trip to Washington, D.C. by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Washington, D.C. ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. when rainfall is around 2.6 in.

Temperature in Washington, D.C. by month

Plan your trip to Washington, D.C. by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Washington, D.C., use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

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 June 12, 2025.
Get a feel of what it's like to fly with Porter Airlines, Delta and United Airlines from Ottawa to Washington, D.C. by reading reviews from past customers. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Porter Airlines
8.0
Very good
288 reviews

Overall

8.0

Food

7.6

Boarding

8.2

Comfort

8.1

Entertainment

7.0

Crew

8.7

Reviews

1 / 20
4.0
Okay

Mary,Jun 2025

FLL - YYZ

Fort Lauderdale staff was not helpful at all to try to accommodate my husband and myself to sit together. Also very surprised to get charged USD53 for each of our checked luggage, as when we booked the tickets online, the website indicated that our first checked luggage will be charged CAD50!! Very misleading!!!
Porter Airlines
8.0
Very good
288 reviews
Porter Airlines
8.0
Very good
288 reviews

Overall

8.0

Food

7.6

Boarding

8.2

Comfort

8.1

Entertainment

7.0

Crew

8.7

Reviews

1 / 20
4.0
Okay

Mary,Jun 2025

FLL - YYZ

Fort Lauderdale staff was not helpful at all to try to accommodate my husband and myself to sit together. Also very surprised to get charged USD53 for each of our checked luggage, as when we booked the tickets online, the website indicated that our first checked luggage will be charged CAD50!! Very misleading!!!
Delta
8.0
Very good
7,946 reviews
Porter Airlines
8.0
Very good
288 reviews

Overall

8.0

Food

7.6

Boarding

8.2

Comfort

8.1

Entertainment

7.0

Crew

8.7

Reviews

1 / 20
4.0
Okay

Mary,Jun 2025

FLL - YYZ

Fort Lauderdale staff was not helpful at all to try to accommodate my husband and myself to sit together. Also very surprised to get charged USD53 for each of our checked luggage, as when we booked the tickets online, the website indicated that our first checked luggage will be charged CAD50!! Very misleading!!!
United Airlines
7.4
Good
8,790 reviews
Porter Airlines
8.0
Very good
288 reviews

Overall

8.0

Food

7.6

Boarding

8.2

Comfort

8.1

Entertainment

7.0

Crew

8.7

Reviews

1 / 20
4.0
Okay

Mary,Jun 2025

FLL - YYZ

Fort Lauderdale staff was not helpful at all to try to accommodate my husband and myself to sit together. Also very surprised to get charged USD53 for each of our checked luggage, as when we booked the tickets online, the website indicated that our first checked luggage will be charged CAD50!! Very misleading!!!
WestJet
7.2
Good
2,868 reviews
Porter Airlines
8.0
Very good
288 reviews

Overall

8.0

Food

7.6

Boarding

8.2

Comfort

8.1

Entertainment

7.0

Crew

8.7

Reviews

1 / 20
4.0
Okay

Mary,Jun 2025

FLL - YYZ

Fort Lauderdale staff was not helpful at all to try to accommodate my husband and myself to sit together. Also very surprised to get charged USD53 for each of our checked luggage, as when we booked the tickets online, the website indicated that our first checked luggage will be charged CAD50!! Very misleading!!!
Air Canada
7.1
Good
9,537 reviews
Porter Airlines
8.0
Very good
288 reviews

Overall

8.0

Food

7.6

Boarding

8.2

Comfort

8.1

Entertainment

7.0

Crew

8.7

Reviews

1 / 20
4.0
Okay

Mary,Jun 2025

FLL - YYZ

Fort Lauderdale staff was not helpful at all to try to accommodate my husband and myself to sit together. Also very surprised to get charged USD53 for each of our checked luggage, as when we booked the tickets online, the website indicated that our first checked luggage will be charged CAD50!! Very misleading!!!

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 3 different airlines.

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

    Air Canada, at $295, was found to be the cheapest airline from Ottawa to Washington, D.C..Alternate airlines to your destination round-trip include Porter Airlines and United Airlines. These flights start at 15% lower than the current average price 3 months from now.

  • What are the cheapest airlines to fly from Ottawa to Washington, D.C. one-way?

    The cheapest airlines for a one-way flight from Ottawa to Washington, D.C. are Porter Airlines ($156), Air Canada ($167), and United Airlines ($192).

  • 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..

  • 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, August is the cheapest month in which you can book a flight from Ottawa to Washington, D.C. (average of $241). Flying from Ottawa to Washington, D.C. in March is currently the most expensive (average of $290). 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 Ottawa?

Book flights to Ottawa if you plan to visit one of these locations
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Browse thousands of different options on Cheapflights for your next trip

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Top 3 airlines flying from Ottawa to Washington, D.C.

Discover the top 3 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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Porter AirlinesCheapest$197Average$373FlexibilityNo cancel feeOn-time52%
United AirlinesCheapest$240Average$378FlexibilityNo cancel feeOn-time69%
Air CanadaCheapest$277Average$440FlexibilityNo cancel feeOn-time67%

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