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$102+ 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 7/22. Fares are subject to change and may not be available on all flights or dates of travel.
WAS — YOW
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
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 57 days in advance, depart on a Monday or Thursday 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 June 12, 2025.

Round-trip from

$255
(Kiwi.com)

One-way from

$102
(FlightHub)

Popular in

March

Cheapest in

January

Average price

$412

Good round-trip deal

$335 or less

Good one-way deal

$180 or less
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. 1% 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 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 June 12, 2025.

This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/316:30 pmIAD - YOW
1 stop3h 24mPorter Airlines
Mon 11/39:40 amYOW - IAD
1 stop3h 19mPorter Airlines
Deal found 6/11$255
This Gotogate 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/2512:55 pmDCA - YOW
Nonstop1h 32mAir Canada
Fri 8/110:25 amYOW - DCA
Nonstop1h 38mAir Canada
Deal found 6/10$299
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.
Wed 7/94:10 pmIAD - YOW
1 stop8h 12mMultiple Airlines
Thu 7/1711:00 amYOW - IAD
1 stop3h 56mMultiple Airlines
Deal found 6/10$309
This Air Canada 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/69:45 amIAD - YOW
1 stop4h 06mAir Canada
Mon 9/82:40 pmYOW - IAD
1 stop6h 25mAir Canada
Deal found 6/10$321
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.
Wed 7/98:40 amBWI - YOW
1 stop8h 26mMultiple Airlines
Thu 7/175:00 pmYOW - BWI
1 stop5h 21mMultiple Airlines
Deal found 6/10$389
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/38:18 amIAD - YOW
Nonstop1h 40mUnited Airlines
Wed 7/239:50 amYOW - IAD
Nonstop1h 39mUnited Airlines
Deal found 6/10$413
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.
Thu 7/312:55 pmDCA - YOW
Nonstop1h 32mUnited Airlines
Thu 7/35:25 pmYOW - DCA
1 stop5h 17mUnited Airlines
Deal found 6/11$454
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/256:00 amDCA - YOW
2 stops18h 22mMultiple Airlines
Fri 8/15:55 amYOW - DCA
1 stop13h 47mMultiple Airlines
Deal found 6/10$460
This oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/136:45 pmIAD - YOW
1 stop12h 00mWestJet
Mon 8/185:55 amYOW - IAD
2 stops10h 35mWestJet
Deal found 6/10$626
This oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/37:40 pmDCA - YOW
2 stops28h 42mWestJet
Sat 7/55:55 amYOW - DCA
2 stops17h 02mWestJet
Deal found 6/11$695
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/238:45 amDCA - YOW
2 stops15h 37mDelta
Wed 7/305:55 amYOW - DCA
2 stops13h 00mDelta
Deal found 6/9$761
This oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/231:34 pmBWI - YOW
2 stops10h 48mWestJet
Wed 6/255:55 amYOW - BWI
2 stops17h 53mWestJet
Deal found 6/11$768

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 June 12, 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

Fri 10/31

6:30 pm-9:54 pm

1 stop3h 24m

Ottawa

Mon 11/3

9:40 am-12:59 pm

1 stop3h 19m

$255

Washington, D.C.Ottawa

DCA - YOW

DCAYOW

Washington, D.C. Reagan-National

Fri 7/25

12:55 pm-2:27 pm

Nonstop1h 32m

Ottawa

Fri 8/1

10:25 am-12:03 pm

Nonstop1h 38m

$299

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Wed 7/9

4:10 pm-12:22 am

1 stop8h 12m

Ottawa

Thu 7/17

11:00 am-2:56 pm

1 stop3h 56m

$309

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Sat 9/6

9:45 am-1:51 pm

1 stop4h 06m

Ottawa

Mon 9/8

2:40 pm-9:05 pm

1 stop6h 25m

$321

BaltimoreOttawa

BWI - YOW

BWIYOW

Baltimore/Washington

Wed 7/9

8:40 am-5:06 pm

1 stop8h 26m

Ottawa

Thu 7/17

5:00 pm-10:21 pm

1 stop5h 21m

$389

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Thu 7/3

8:18 am-9:58 am

Nonstop1h 40m

Ottawa

Wed 7/23

9:50 am-11:29 am

Nonstop1h 39m

$413

Washington, D.C.Ottawa

DCA - YOW

DCAYOW

Washington, D.C. Reagan-National

Thu 7/3

12:55 pm-2:27 pm

Nonstop1h 32m

Ottawa

Thu 7/3

5:25 pm-10:42 pm

1 stop5h 17m

$454

Washington, D.C.Ottawa

DCA - YOW

DCAYOW

Washington, D.C. Reagan-National

Fri 7/25

6:00 am-12:22 am

2 stops18h 22m

Ottawa

Fri 8/1

5:55 am-7:42 pm

1 stop13h 47m

$460

Washington, D.C.Ottawa

IAD - YOW

IADYOW

Washington, D.C. Dulles Intl

Wed 8/13

6:45 pm-6:45 am

1 stop12h 00m

Ottawa

Mon 8/18

5:55 am-4:30 pm

2 stops10h 35m

$626

Washington, D.C.Ottawa

DCA - YOW

DCAYOW

Washington, D.C. Reagan-National

Thu 7/3

7:40 pm-12:22 am

2 stops28h 42m

Ottawa

Sat 7/5

5:55 am-10:57 pm

2 stops17h 02m

$695

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

Showing 1-10 of 29 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 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 June 9, 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, 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 September is currently the most expensive (average of $428). 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 June 12, 2025.

It’s optimal to fly from Washington, D.C. to Ottawa in the morning. By choosing this option you can save up to 31% 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 June 12, 2025.

The most flights from WAS to YOW are scheduled on a Wednesday (9 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (7 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 June 12, 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
288 reviews

Food

7.6

Boarding

8.2

Comfort

8.1

Overall

8.0

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

Food

7.6

Boarding

8.2

Comfort

8.1

Overall

8.0

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
7,950 reviews
Porter Airlines
8.0
Very good
288 reviews

Food

7.6

Boarding

8.2

Comfort

8.1

Overall

8.0

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

Food

7.6

Boarding

8.2

Comfort

8.1

Overall

8.0

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

Food

7.6

Boarding

8.2

Comfort

8.1

Overall

8.0

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
9,531 reviews
Porter Airlines
8.0
Very good
288 reviews

Food

7.6

Boarding

8.2

Comfort

8.1

Overall

8.0

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 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 $255. Additional round-trip tickets that might be worth considering are offered by Air Canada and United Airlines, with the lowest prices starting at $299 and $413, respectively. You may be able to fly from Washington, D.C. to Ottawa for 34% 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?

    $102 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 United Airlines, with prices starting from $120 and $178, 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.

  • 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 September is currently the most expensive (average of $428). 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
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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$155Average$527FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$176Average$642FlexibilityNo cancel feeOn-time69%
Porter AirlinesCheapest$201Average$358FlexibilityNo cancel feeOn-time52%
Air TransatCheapest$347Average$348FlexibilityNo cancel feeOn-time50%

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