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$125+ 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 6/18. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — YOW
Apr 22 — Apr 291
Tue 4/22
Tue 4/29
1 adult, Economy
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Cheapflights Tip: The best prices from Washington, D.C. to Ottawa are usually found in January or November, booked 72 days in advance, depart on a Thursday or Monday and return on a Thursday

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 April 17, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$287
(Kiwi.com)

One-way from

$125
(Kiwi.com)

Popular in

March

Cheapest in

January

Average price

$321

Good round-trip deal

$300 or less

Good one-way deal

$132 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. 1% potential increase in price ($5 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 April 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 April 17, 2025.

This Kiwi.com deal was found by Cheapflights users on 4/16. 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 6/114:20 pmIAD - YOW
1 stop8h 02mMultiple Airlines
Fri 6/135:55 amYOW - IAD
1 stop9h 11mMultiple Airlines
Deal found 4/16$287
This Kiwi.com deal was found by Cheapflights users on 4/16. 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 5/184:20 pmIAD - YOW
1 stop4h 18mPorter Airlines
Wed 5/2810:15 amYOW - IAD
1 stop4h 51mPorter Airlines
Deal found 4/16$299
This Flightnetwork deal was found by Cheapflights users on 4/15. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/176:00 amDCA - YOW
1 stop4h 25mAir Canada
Fri 7/256:00 amYOW - DCA
1 stop4h 18mAir Canada
Deal found 4/15$344
This Mytrip deal was found by Cheapflights users on 4/17. 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.
Sun 6/16:41 amBWI - YOW
1 stop10h 34mMultiple Airlines
Sun 6/83:50 pmYOW - BWI
1 stop19h 09mMultiple Airlines
Deal found 4/17$346
This Air Canada deal was found by Cheapflights users on 4/16. 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 5/175:10 pmIAD - YOW
Nonstop1h 42mAir Canada
Fri 5/307:29 pmYOW - IAD
Nonstop1h 35mAir Canada
Deal found 4/16$376
This KAYAK deal was found by Cheapflights users on 4/17. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/271:45 pmDCA - YOW
2 stops10h 37mWestJet
Thu 5/295:55 amYOW - DCA
2 stops10h 04mWestJet
Deal found 4/17$532
This United deal was found by Cheapflights users on 4/17. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/136:00 amDCA - YOW
2 stops15h 09mMultiple Airlines
Sun 5/186:00 amYOW - DCA
1 stop4h 19mMultiple Airlines
Deal found 4/17$534
This United Airlines deal was found by Cheapflights users on 4/17. 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 5/2712:55 pmDCA - YOW
Nonstop1h 32mUnited Airlines
Thu 5/2910:25 amYOW - DCA
Nonstop1h 36mUnited Airlines
Deal found 4/17$611
This United Airlines deal was found by Cheapflights users on 4/16. 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 6/183:40 pmIAD - YOW
1 stop6h 25mUnited Airlines
Sun 6/226:10 pmYOW - IAD
2 stops12h 54mUnited Airlines
Deal found 4/16$631
This Delta deal was found by Cheapflights users on 4/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/299:36 amBWI - YOW
2 stops14h 46mDelta
Wed 8/205:55 amYOW - BWI
2 stops9h 57mDelta
Deal found 4/17$732
This Delta deal was found by Cheapflights users on 4/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/110:00 amDCA - YOW
2 stops14h 22mDelta
Wed 8/205:55 amYOW - DCA
2 stops15h 21mDelta
Deal found 4/17$752
This WestJet deal was found by Cheapflights users on 4/16. 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 WestJet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/206:00 amIAD - YOW
2 stops18h 22mWestJet
Wed 5/286:00 amYOW - IAD
1 stop11h 54mWestJet
Deal found 4/16$769

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 April 17, 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

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Wed 6/11

4:20 pm-12:22 am

1 stop8h 02m

Ottawa

Fri 6/13

5:55 am-3:06 pm

1 stop9h 11m

$287

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Sun 5/18

4:20 pm-8:38 pm

1 stop4h 18m

Ottawa

Wed 5/28

10:15 am-3:06 pm

1 stop4h 51m

$299

Washington, D.C.Ottawa

DCA - YOW

DCAYOW

Washington, D.C. Reagan-National

Thu 7/17

6:00 am-10:25 am

1 stop4h 25m

Ottawa

Fri 7/25

6:00 am-10:18 am

1 stop4h 18m

$344

BaltimoreOttawa

BWI - YOW

BWIYOW

Baltimore/Washington

Sun 6/1

6:41 am-5:15 pm

1 stop10h 34m

Ottawa

Sun 6/8

3:50 pm-10:59 am

1 stop19h 09m

$346

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Sat 5/17

5:10 pm-6:52 pm

Nonstop1h 42m

Ottawa

Wed 5/28

9:50 am-11:29 am

Nonstop1h 39m

$376

Washington, D.C.Ottawa

DCA - YOW

DCAYOW

Washington, D.C. Reagan-National

Wed 6/18

6:00 am-4:43 pm

1 stop10h 43m

Ottawa

Sun 6/22

9:20 am-7:42 pm

1 stop10h 22m

$514

Washington, D.C.Ottawa

DCA - YOW

DCAYOW

Washington, D.C. Reagan-National

Tue 5/27

12:55 pm-2:27 pm

Nonstop1h 32m

Ottawa

Thu 5/29

10:25 am-12:01 pm

Nonstop1h 36m

$611

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Wed 6/18

3:40 pm-10:05 pm

1 stop6h 25m

Ottawa

Sun 6/22

6:10 pm-7:04 am

2 stops12h 54m

$631

Washington, D.C.Ottawa

DCA - YOW

DCAYOW

Washington, D.C. Reagan-National

Tue 7/29

10:00 am-12:22 am

2 stops14h 22m

Ottawa

Tue 8/19

5:55 am-6:40 pm

2 stops12h 45m

$713

BaltimoreOttawa

BWI - YOW

BWIYOW

Baltimore/Washington

Tue 7/29

9:36 am-12:22 am

2 stops14h 46m

Ottawa

Wed 8/20

5:55 am-3:52 pm

2 stops9h 57m

$732

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/17

Showing 1-10 of 29 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 April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 stars
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 Washington, D.C.-Ottawa flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Washington, D.C.-Ottawa flight deals on Cheapflights vs. FlightHub >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 April 11, 2025.

The best time to book flights from Washington, D.C. to Ottawa is 72 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, January is the cheapest month in which you can book a flight from Washington, D.C. to Ottawa (average of $294). Flying from Washington, D.C. to Ottawa in May is currently the most expensive (average of $460). 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 April 17, 2025.

It’s optimal to fly from Washington, D.C. to Ottawa at noon. By choosing this option you can save up to 47% on the cost of your flight, compared to a flight in the afternoon.

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 Wednesday at noon when fares are most often at their lowest. Monday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

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 April 17, 2025.

The most flights from WAS to YOW are scheduled on a Wednesday (9 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (8 on average).

Rainfall in Ottawa by month

Plan your trip to Ottawa by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Ottawa ranges from 2.0 - 3.7 inches per month. June is typically the wettest month, when rainfall can reach 3.7 in. February is typically the driest time to visit Ottawa when rainfall is around 2.0 in.

Temperature in Ottawa by month

Plan your trip to Ottawa by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Ottawa, 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 69.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 14.0 F).

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 April 17, 2025.
Read through reviews of airlines operating flights from Washington, D.C. to Ottawa, such as Porter Airlines, Delta and United Airlines. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Porter Airlines
8.0
Very good
281 reviews

Food

7.6

Comfort

8.0

Entertainment

7.0

Boarding

8.2

Overall

8.0

Crew

8.7

Reviews

1 / 18
10.0
Excellent

Anonymous,Apr 2025

MCO - YHZ

A good flight and the crew was very nice. Thank you
Porter Airlines
8.0
Very good
281 reviews
Porter Airlines
8.0
Very good
281 reviews

Food

7.6

Comfort

8.0

Entertainment

7.0

Boarding

8.2

Overall

8.0

Crew

8.7

Reviews

1 / 18
10.0
Excellent

Anonymous,Apr 2025

MCO - YHZ

A good flight and the crew was very nice. Thank you
Delta
8.0
Very good
7,916 reviews
Porter Airlines
8.0
Very good
281 reviews

Food

7.6

Comfort

8.0

Entertainment

7.0

Boarding

8.2

Overall

8.0

Crew

8.7

Reviews

1 / 18
10.0
Excellent

Anonymous,Apr 2025

MCO - YHZ

A good flight and the crew was very nice. Thank you
United Airlines
7.4
Good
8,667 reviews
Porter Airlines
8.0
Very good
281 reviews

Food

7.6

Comfort

8.0

Entertainment

7.0

Boarding

8.2

Overall

8.0

Crew

8.7

Reviews

1 / 18
10.0
Excellent

Anonymous,Apr 2025

MCO - YHZ

A good flight and the crew was very nice. Thank you
WestJet
7.2
Good
2,809 reviews
Porter Airlines
8.0
Very good
281 reviews

Food

7.6

Comfort

8.0

Entertainment

7.0

Boarding

8.2

Overall

8.0

Crew

8.7

Reviews

1 / 18
10.0
Excellent

Anonymous,Apr 2025

MCO - YHZ

A good flight and the crew was very nice. Thank you
Air Canada
7.0
Good
9,143 reviews
Porter Airlines
8.0
Very good
281 reviews

Food

7.6

Comfort

8.0

Entertainment

7.0

Boarding

8.2

Overall

8.0

Crew

8.7

Reviews

1 / 18
10.0
Excellent

Anonymous,Apr 2025

MCO - YHZ

A good flight and the crew was very nice. Thank you

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 4 different airlines.

  • 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 $299. Additional round-trip tickets that might be worth considering are offered by Air Canada and United Airlines, with the lowest prices starting at $375 and $631, respectively. You may be able to fly from Washington, D.C. to Ottawa for 22% less than the average price by searching for these airlines.

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

    $146 is the cheapest one-way deal found within the past few days, from Porter Airlines. You may also be able to find cheap deals on Air Canada and WestJet, with prices starting from $152 and $193, respectively.

  • 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 Air Canada (75%), GoJet (74%) or United Airlines (74%) 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 $380, our data shows the cheapest flight currently is $198. When looking at the most popular route, (Washington, D.C. Dulles Intl - Ottawa), you can expect to pay $287 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, January is the cheapest month in which you can book a flight from Washington, D.C. to Ottawa (average of $294). Flying from Washington, D.C. to Ottawa in May is currently the most expensive (average of $460). 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
Gatineau
Brockville
Pembroke
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 4 airlines flying from Washington, D.C. to Ottawa

Discover the top 4 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 April 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$155Average$390FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$176Average$642FlexibilityNo cancel feeOn-time69%
Porter AirlinesCheapest$188Average$380FlexibilityNo cancel feeOn-time52%
Air TransatCheapest$347Average$348FlexibilityNo cancel feeOn-time50%

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