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$124+ Cheap flights from Washington 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 10/3. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — YOW
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
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Cheap flight deals from Washington to Ottawa

Keep the following information in mind while searching for Washington to Ottawa flight deals. Data was last updated September 15, 2025.

Round-trip from

$238
(United Airlines)

One-way from

$124
(United Airlines)

Popular in

February

Cheapest in

September

Average price

$401
From Washington to Ottawa
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One-way flight from Washington to Ottawa
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Highest demand for flights based on searches. 9% potential increase in price ($50 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($14 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Washington to Ottawa

Cheapest flights from Washington to Ottawa
Explore the most affordable flight options available from Washington to Ottawa. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 15, 2025.

This oojo deal was found by Cheapflights users on 9/14. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/111:50 pmSEA - YOW
1 stop7h 50mWestJet
Wed 10/155:55 amYOW - SEA
2 stops10h 04mWestJet
Deal found 9/14$264
This oojo deal was found by Cheapflights users on 9/13. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/178:40 amSEA - YOW
2 stops12h 42mWestJet
Mon 10/205:55 amYOW - SEA
2 stops10h 04mWestJet
Deal found 9/13$269
This Kiwi.com deal was found by Cheapflights users on 9/13. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/81:50 pmSEA - YOW
1 stop13h 55mWestJet
Mon 10/205:55 amYOW - SEA
2 stops10h 04mWestJet
Deal found 9/13$271
This United Airlines deal was found by Cheapflights users on 9/15. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/297:37 pmSEA - YOW
2 stops13h 08mUnited Airlines
Tue 9/302:45 pmYOW - SEA
1 stop8h 59mUnited Airlines
Deal found 9/15$284
This oojo deal was found by Cheapflights users on 9/14. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/128:40 amSEA - YOW
2 stops28h 39mWestJet
Sun 10/195:55 amYOW - SEA
2 stops34h 04mWestJet
Deal found 9/14$285
This oojo deal was found by Cheapflights users on 9/12. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/178:40 amSEA - YOW
2 stops12h 42mWestJet
Sun 10/195:55 amYOW - SEA
2 stops34h 04mWestJet
Deal found 9/12$292
This United Airlines deal was found by Cheapflights users on 9/13. 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.
Sat 10/116:00 amSEA - YOW
1 stop7h 43mUnited Airlines
Wed 10/155:25 pmYOW - SEA
1 stop8h 05mUnited Airlines
Deal found 9/13$302
This Air Canada deal was found by Cheapflights users on 9/13. 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.
Sat 10/117:40 pmPDX - YOW
1 stop9h 43mAir Canada
Sat 10/186:00 pmYOW - PDX
1 stop8h 01mAir Canada
Deal found 9/13$313
This United Airlines deal was found by Cheapflights users on 9/13. 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.
Sat 10/115:15 pmPDX - YOW
2 stops12h 56mUnited Airlines
Sat 10/182:48 pmYOW - PDX
1 stop9h 38mUnited Airlines
Deal found 9/13$327
This Air Canada deal was found by Cheapflights users on 9/13. 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.
Sun 12/77:00 pmPDX - YOW
1 stop8h 43mAir Canada
Fri 12/127:45 amYOW - PDX
1 stop10h 00mAir Canada
Deal found 9/13$453
This United Airlines deal was found by Cheapflights users on 9/13. 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 10/2811:59 pmPDX - YOW
1 stop7h 27mUnited Airlines
Tue 11/49:45 amYOW - PDX
1 stop13h 44mUnited Airlines
Deal found 9/13$468
This Kiwi.com deal was found by Cheapflights users on 9/13. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2810:38 amPDX - YOW
1 stop22h 57mMultiple Airlines
Tue 11/46:00 amYOW - PDX
2 stops17h 50mMultiple Airlines
Deal found 9/13$474

Cheapflights Fare Finder

 
Customize your flight search to find flights from Washington 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 September 15, 2025.
Use the filters below to find and compare flights from Washington to Ottawa that are best for you.

Fly from

Washington

Fly to

Ottawa

Route

Depart

Return

Price

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Tue 3/10

1:55 pm-10:07 am

2 stops17h 12m

Ottawa

Wed 3/11

2:05 pm-12:51 am

2 stops13h 46m

$244

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Sat 10/11

1:50 pm-12:40 am

1 stop7h 50m

Ottawa

Wed 10/15

5:55 am-12:59 pm

2 stops10h 04m

$264

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Fri 10/17

8:40 am-12:22 am

2 stops12h 42m

Ottawa

Mon 10/20

6:00 am-12:59 pm

1 stop9h 59m

$264

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Wed 10/8

1:50 pm-6:45 am

1 stop13h 55m

Ottawa

Mon 10/20

5:55 am-12:59 pm

2 stops10h 04m

$271

PortlandOttawa

PDX - YOW

PDXYOW

Portland

Sat 10/11

7:40 pm-8:23 am

1 stop9h 43m

Ottawa

Sat 10/18

6:00 pm-11:01 pm

1 stop8h 01m

$313

PortlandOttawa

PDX - YOW

PDXYOW

Portland

Sat 10/11

5:15 pm-9:11 am

2 stops12h 56m

Ottawa

Sat 10/18

2:48 pm-9:26 pm

1 stop9h 38m

$327

PortlandOttawa

PDX - YOW

PDXYOW

Portland

Tue 3/10

7:00 pm-6:43 am

1 stop8h 43m

Ottawa

Wed 3/11

9:15 am-6:30 pm

2 stops12h 15m

$437

PortlandOttawa

PDX - YOW

PDXYOW

Portland

Tue 3/10

11:55 pm-10:07 am

1 stop7h 12m

Ottawa

Wed 3/11

2:05 pm-10:08 pm

2 stops11h 03m

$451

PortlandOttawa

PDX - YOW

PDXYOW

Portland

Sun 12/7

7:00 pm-6:43 am

1 stop8h 43m

Ottawa

Fri 12/12

7:45 am-2:45 pm

1 stop10h 00m

$453

PortlandOttawa

PDX - YOW

PDXYOW

Portland

Tue 10/28

11:59 pm-10:26 am

1 stop7h 27m

Ottawa

Tue 11/4

9:45 am-8:29 pm

1 stop13h 44m

$468

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Showing 1-10 of 27 results
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Best time to book a flight from Washington to Ottawa

Have a flexible travel schedule? Discover the best time to fly to Ottawa from Washington 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 to Ottawa

What is the cheapest month to book a flight from State of Washington to Ottawa?

Currently, January is the cheapest month in which you can book a flight from State of Washington to Ottawa (average of $294). Flying from State of Washington to Ottawa in September is currently the most expensive (average of $419). 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 WA to YOW?

Find hourly flight availability from Washington 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 September 15, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from State of Washington to Ottawa as you normally would.

Related info for your journey

Find useful and relevant information for your journey from Washington 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?

    Most people fly into Ottawa (YOW) if they book a flight to Ottawa from Washington. Ottawa is conveniently located just 6.6 mi from Ottawa’s city center.

  • How long is the flight from State of Washington to Ottawa?

    Airlines like United Airlines and Air Canada fly from State of Washington to Ottawa in about 9h 43m. The time it takes to get you to your destination can typically vary by up to 7h 29m. The distance from State of Washington to Ottawa is about 2240 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines to fly from State of Washington to Ottawa one-way?

    For one-way options, check prices for United Airlines. According to our data, you can fly for as low as $124. Users have also found prices from $125 and $144 on Air Canada and WestJet, respectively.

  • What are the most popular routes from State of Washington to Ottawa?

    Most travelers choose Seattle/Tacoma Intl - Ottawa, Portland - Ottawa or Bellingham - Ottawa when deciding on the best route from State of Washington to Ottawa.

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

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

  • How can I find direct flights from Washington to Ottawa?

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

  • Can I find deals for business class flights from Washington to Ottawa?

    Yes. Cheapflights offers flight deals from Washington 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 State of Washington to Ottawa?

    Currently, January is the cheapest month in which you can book a flight from State of Washington to Ottawa (average of $294). Flying from State of Washington to Ottawa in September is currently the most expensive (average of $419). 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 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 to Ottawa

Discover the top 3 airlines that operate flights from Washington 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 September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$256Average$541FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$282Average$869FlexibilityNo cancel feeOn-time69%
WestJetCheapest$294Average$403FlexibilityNo cancel feeOn-time60%

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