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$109+ Cheap flights from Washington, D.C. (WAS) to Ottawa (YOW)

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 11/27. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — YOW
Nov 29 — Dec 61
Sat 11/29
Sat 12/6
1 adult, Economy
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Cheapflights Tip: The best prices from Washington, D.C. to Ottawa are usually found in January or April, booked 57 days in advance, depart on a Monday or Saturday 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 October 30, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$258
(Mytrip)

One-way from

$109
(Kiwi.com)

Popular in

March

Cheapest in

January

Average price

$423

Good round-trip deal

$292 or less

Good one-way deal

$256 or less
Provider with most accurate pricing for Washington, D.C. (WAS)-Ottawa flight deals.
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Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Ottawa flights.
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From Washington, D.C. (WAS) to Ottawa
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One-way flight from Washington, D.C. (WAS) to Ottawa
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Highest demand for flights based on searches. 2% potential increase in price ($8 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 October 2025
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Price to beat on a round-trip flight from Washington, D.C. (WAS) to Ottawa.
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Price to beat on a one-way flight from Washington, D.C. (WAS) to Ottawa.
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Find flight deals from Washington, D.C. to Ottawa

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 October 30, 2025.

This Mytrip deal was found by Cheapflights users on 10/30. 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.
Fri 12/510:40 amBWI - YOW
1 stop13h 18mMultiple Airlines
Sun 12/77:00 amYOW - BWI
3 stops26h 22mMultiple Airlines
Deal found 10/30$258
This Kiwi.com deal was found by Cheapflights users on 10/28. 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.
Wed 11/126:20 amBWI - YOW
2 stops18h 22mMultiple Airlines
Tue 11/184:15 pmYOW - BWI
1 stop23h 32mMultiple Airlines
Deal found 10/28$278
This Kiwi.com deal was found by Cheapflights users on 10/28. 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.
Wed 11/126:20 amBWI - YOW
2 stops18h 22mMultiple Airlines
Mon 11/174:15 pmYOW - BWI
1 stop23h 32mMultiple Airlines
Deal found 10/28$284
This FlightHub deal was found by Cheapflights users on 10/28. 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 11/2711:40 amIAD - YOW
1 stop8h 14mPorter Airlines
Thu 12/46:50 amYOW - IAD
1 stop3h 34mPorter Airlines
Deal found 10/28$289
This Kiwi.com deal was found by Cheapflights users on 10/30. 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 11/206:30 pmIAD - YOW
1 stop3h 59mPorter Airlines
Sun 11/231:20 pmYOW - IAD
1 stop3h 54mPorter Airlines
Deal found 10/30$290
This Kiwi.com deal was found by Cheapflights users on 10/29. 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.
Wed 11/196:30 pmIAD - YOW
1 stop3h 59mPorter Airlines
Thu 11/206:50 amYOW - IAD
1 stop3h 34mPorter Airlines
Deal found 10/29$291
This Kiwi.com deal was found by Cheapflights users on 10/29. 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 11/205:40 amBWI - YOW
1 stop11h 45mMultiple Airlines
Mon 11/244:15 pmYOW - BWI
1 stop17h 53mMultiple Airlines
Deal found 10/29$291
This Kiwi.com deal was found by Cheapflights users on 10/29. 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 11/206:30 pmIAD - YOW
1 stop3h 59mPorter Airlines
Mon 11/241:20 pmYOW - IAD
1 stop3h 54mPorter Airlines
Deal found 10/29$296
This Kiwi.com deal was found by Cheapflights users on 10/30. 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 12/811:40 amIAD - YOW
1 stop3h 24mPorter Airlines
Wed 12/106:50 amYOW - IAD
1 stop3h 34mPorter Airlines
Deal found 10/30$297
This Gotogate deal was found by Cheapflights users on 10/28. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/116:30 pmIAD - YOW
1 stop3h 59mPorter Airlines
Thu 12/181:20 pmYOW - IAD
1 stop3h 54mPorter Airlines
Deal found 10/28$302
This Kiwi.com deal was found by Cheapflights users on 10/29. 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.
Sun 11/166:30 pmIAD - YOW
1 stop3h 59mPorter Airlines
Wed 11/196:50 amYOW - IAD
1 stop3h 34mPorter Airlines
Deal found 10/29$305
This Kiwi.com deal was found by Cheapflights users on 10/28. 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.
Tue 11/119:36 pmBWI - YOW
2 stops27h 06mMultiple Airlines
Tue 11/259:30 amYOW - BWI
1 stop7h 54mMultiple Airlines
Deal found 10/28$306

Cheapflights Fare Finder

 
Customize 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 2,558,603 searches. Data last updated October 30, 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

BaltimoreOttawa

BWI - YOW

BWIYOW

Baltimore/Washington

Fri 12/5

10:40 am-11:58 pm

1 stop13h 18m

Ottawa

Sun 12/7

7:00 am-9:22 am

3 stops26h 22m

$258

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Thu 11/27

11:40 am-7:54 pm

1 stop8h 14m

Ottawa

Thu 12/4

6:50 am-10:24 am

1 stop3h 34m

$289

BaltimoreOttawa

BWI - YOW

BWIYOW

Baltimore/Washington

Tue 11/11

9:36 pm-12:42 am

2 stops27h 06m

Ottawa

Tue 11/25

9:30 am-5:24 pm

1 stop7h 54m

$306

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Mon 12/8

11:40 am-3:04 pm

1 stop3h 24m

Ottawa

Sat 12/20

1:20 pm-5:14 pm

1 stop3h 54m

$313

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Wed 11/19

6:30 pm-10:29 pm

1 stop3h 59m

Ottawa

Thu 11/20

12:10 pm-5:14 pm

1 stop5h 04m

$314

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Sun 12/14

6:30 pm-10:29 pm

1 stop3h 59m

Ottawa

Sun 12/21

1:20 pm-5:14 pm

1 stop3h 54m

$317

BaltimoreOttawa

BWI - YOW

BWIYOW

Baltimore/Washington

Thu 11/20

5:40 am-5:25 pm

1 stop11h 45m

Ottawa

Mon 11/24

9:30 am-9:36 am

2 stops24h 06m

$319

BaltimoreOttawa

BWI - YOW

BWIYOW

Baltimore/Washington

Sat 11/8

10:16 am-11:58 pm

1 stop13h 42m

Ottawa

Tue 11/11

4:15 pm-12:55 pm

2 stops20h 40m

$331

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Sat 2/14

1:45 pm-5:29 pm

1 stop3h 44m

Ottawa

Sun 2/15

12:10 pm-5:14 pm

1 stop5h 04m

$334

BaltimoreOttawa

BWI - YOW

BWIYOW

Baltimore/Washington

Thu 11/20

5:40 am-5:25 pm

1 stop11h 45m

Ottawa

Sun 11/23

9:30 am-9:36 am

2 stops24h 06m

$347

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/28

Showing 1-10 of 55 results
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Compare providers for flights from Washington, D.C. to Ottawa

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 Washington, D.C. to Ottawa in October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star

*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 Washington, D.C.-Ottawa flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Washington, D.C.-Ottawa flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Washington, D.C.-Ottawa flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Washington, D.C.-Ottawa 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 Washington, D.C.-Ottawa 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 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 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 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 round-trip flight from Washington, D.C. to Ottawa. Price data was last updated on October 24, 2025.

The best time to book flights from Washington, D.C. to Ottawa is 57 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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 $113). Flying from Washington, D.C. to Ottawa in June is currently the most expensive (average of $214). 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 October 30, 2025.

It’s optimal to fly from Washington, D.C. to Ottawa at noon. By choosing this option you can save up to 39% on the cost of your flight, compared to a flight in the evening.

What is the cheapest day to fly from Washington, D.C. to Ottawa?

Use this chart to determine the cheapest time to fly round-trip from Washington, D.C. to Ottawa. Price data was last updated on November 18, 2024.

Travelers seeking maximum savings on their Washington, D.C. to Ottawa flight should consider departing on Friday at noon when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

How much does it cost to fly round-trip from Washington, D.C. to Ottawa?

Reviews of airlines servicing Ottawa

Get insights into the airlines that provide service to Ottawa. 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 Ottawa. Reviews last updated October 30, 2025.
Peruse reviews from past customers who have flown with Porter Airlines, United Airlines, and Air Canada from Washington, D.C. to Ottawa to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Porter Airlines
8.0
Very good
384 reviews

Food

7.6

Boarding

8.2

Comfort

8.0

Overall

8.0

Entertainment

7.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.
Porter Airlines
8.0
Very good
384 reviews
Porter Airlines
8.0
Very good
384 reviews

Food

7.6

Boarding

8.2

Comfort

8.0

Overall

8.0

Entertainment

7.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.
United Airlines
7.4
Good
8,998 reviews
Porter Airlines
8.0
Very good
384 reviews

Food

7.6

Boarding

8.2

Comfort

8.0

Overall

8.0

Entertainment

7.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.
Air Canada
7.1
Good
10,376 reviews
Porter Airlines
8.0
Very good
384 reviews

Food

7.6

Boarding

8.2

Comfort

8.0

Overall

8.0

Entertainment

7.0

Crew

8.6

Reviews

1 / 20
2.0
Mediocre

Anonymous,Sep 2025

YYZ - OPO

Very disappointing, booked with Porter airlines and changed to Air Transit last minute. Old plane, cramped seating, even the aisle was the narrowest I’ve ever seen. Very uncomfortable flight. Full meal at 130 am and only a small piece of banana bread in the morning… should be opposite.

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 4 daily inbound flights from Washington, D.C. from 3 different airlines.

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

    For as low as $359, Porter Airlines can have you in Ottawa from Washington, D.C. in 1h 35m. Airlines will cover a distance of 452 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    Flying on Porter Airlines is currently your cheapest option to Ottawa, with prices starting at $179. Additional round-trip tickets that might be worth considering are offered by Air Canada and United Airlines, with the lowest prices starting at $206 and $218, respectively. You may be able to fly from Washington, D.C. to Ottawa for 54% less than the average price by searching for these airlines.

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

    When deciding which route to take from Washington, D.C. to Ottawa consider Washington, D.C. Dulles Intl - Ottawa, Washington, D.C. Reagan-National - Ottawa or Baltimore/Washington - Ottawa as they are the most popular.

  • 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.

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

    While on average a flight from Washington, D.C. to Ottawa is generally $1,039, our data shows the cheapest flight currently is $401. When looking at the most popular route, (Washington, D.C. Dulles Intl - Ottawa), you can expect to pay $284 for that flight.

  • 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 vacation 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 $113). Flying from Washington, D.C. to Ottawa in June is currently the most expensive (average of $214). 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
Gatineau
Petawawa

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Alternative routes for Washington, D.C. to Ottawa

See prices for flight routes from nearby airports that may be better suited for you.
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Top 3 airlines flying from Washington, D.C. to Ottawa

Discover the top 3 airlines that operate flights from Washington, D.C. to Ottawa. 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 October 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
Porter AirlinesCheapest$179Average$331FlexibilityNo cancel feeOn-time52%
Air CanadaCheapest$206Average$464FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$218Average$500FlexibilityNo cancel feeOn-time69%

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