HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Ottawa

$132+ 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 9/16. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — YOW
Aug 5 — Aug 121
Tue 8/5
Tue 8/12
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Washington to Ottawa with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 July 31, 2025.

Round-trip from

$345
(oojo)

One-way from

$132
(Trip.com)

Popular in

October

Cheapest in

September

Average price

$546
From Washington to Ottawa
Search Deals
One-way flight from Washington to Ottawa
Search Deals
High demand for flights, 0% potential price rise
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($18 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2025
Search Deals

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 July 31, 2025.

This oojo deal was found by Cheapflights users on 7/31. 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 9/131:50 pmSEA - YOW
2 stops23h 29mWestJet
Sat 9/207:15 pmYOW - SEA
2 stops20h 18mWestJet
Deal found 7/31$345
This Kiwi.com deal was found by Cheapflights users on 7/30. 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.
Fri 9/51:45 pmPDX - YOW
1 stop20h 15mMultiple Airlines
Tue 9/93:35 pmYOW - PDX
2 stops22h 37mMultiple Airlines
Deal found 7/30$399
This deal was found by Cheapflights users on 7/29. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1810:00 amPDX - YOW
1 stop7h 53mAir Canada
Mon 9/229:35 amYOW - PDX
1 stop8h 11mAir Canada
Deal found 7/29$413
This Mytrip deal was found by Cheapflights users on 7/31. 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.
Sat 9/131:50 pmSEA - YOW
3 stops24h 31mMultiple Airlines
Sat 9/207:15 pmYOW - SEA
2 stops20h 18mMultiple Airlines
Deal found 7/31$441
This Mytrip deal was found by Cheapflights users on 7/30. 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.
Thu 8/286:00 amBLI - YOW
2 stops21h 45mMultiple Airlines
Thu 9/46:00 amYOW - BLI
3 stops18h 42mMultiple Airlines
Deal found 7/30$461
This United Airlines deal was found by Cheapflights users on 7/30. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1210:44 pmPDX - YOW
1 stop10h 01mUnited Airlines
Sun 9/146:33 amYOW - PDX
1 stop8h 16mUnited Airlines
Deal found 7/30$533
This FlightHub deal was found by Cheapflights users on 7/28. 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.
Sat 9/201:45 pmPDX - YOW
2 stops23h 34mWestJet
Wed 9/245:15 pmYOW - PDX
2 stops22h 50mWestJet
Deal found 7/28$619
This United Airlines deal was found by Cheapflights users on 7/31. 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.
Sun 8/1712:20 amSEA - YOW
1 stop10h 44mUnited Airlines
Thu 8/285:15 amYOW - SEA
1 stop8h 45mUnited Airlines
Deal found 7/31$826

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 July 31, 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

Sat 9/13

1:50 pm-4:19 pm

2 stops23h 29m

Ottawa

Sat 9/20

7:15 pm-12:33 pm

2 stops20h 18m

$345

PortlandOttawa

PDX - YOW

PDXYOW

Portland

Fri 9/5

1:45 pm-1:00 pm

1 stop20h 15m

Ottawa

Tue 9/9

3:35 pm-11:12 am

2 stops22h 37m

$399

PortlandOttawa

PDX - YOW

PDXYOW

Portland

Thu 9/18

10:00 am-8:53 pm

1 stop7h 53m

Ottawa

Mon 9/22

9:35 am-2:46 pm

1 stop8h 11m

$413

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Sat 9/13

1:50 pm-5:21 pm

3 stops24h 31m

Ottawa

Sat 9/20

7:15 pm-12:33 pm

2 stops20h 18m

$441

BellinghamOttawa

BLI - YOW

BLIYOW

Bellingham

Thu 8/28

6:00 am-6:45 am

2 stops21h 45m

Ottawa

Thu 9/4

6:00 am-9:42 pm

3 stops18h 42m

$461

PortlandOttawa

PDX - YOW

PDXYOW

Portland

Fri 9/12

10:44 pm-11:45 am

1 stop10h 01m

Ottawa

Sun 9/14

6:33 am-11:49 am

1 stop8h 16m

$533

PortlandOttawa

PDX - YOW

PDXYOW

Portland

Sat 9/20

1:45 pm-4:19 pm

2 stops23h 34m

Ottawa

Wed 9/24

5:15 pm-1:05 pm

2 stops22h 50m

$619

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Sun 8/17

12:20 am-2:04 pm

1 stop10h 44m

Ottawa

Thu 8/28

5:15 am-11:00 am

1 stop8h 45m

$826

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Tue 9/16

7:05 am-6:20 pm

1 stop8h 15m

$132

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Tue 9/16

2:05 pm-1:03 pm

2 stops19h 58m

$141

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/31

Showing 1-10 of 13 results
1
2

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 $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 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 July 31, 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.

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 July 31, 2025.
Peruse reviews from past customers who have flown with United Airlines, WestJet, and Air Canada from Washington to Ottawa to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,900 reviews

Overall

7.4

Boarding

7.7

Food

6.6

Entertainment

7.1

Comfort

7.3

Crew

8.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
United Airlines
7.4
Good
8,900 reviews
United Airlines
7.4
Good
8,900 reviews

Overall

7.4

Boarding

7.7

Food

6.6

Entertainment

7.1

Comfort

7.3

Crew

8.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
WestJet
7.2
Good
2,978 reviews
United Airlines
7.4
Good
8,900 reviews

Overall

7.4

Boarding

7.7

Food

6.6

Entertainment

7.1

Comfort

7.3

Crew

8.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
Air Canada
7.1
Good
9,851 reviews
United Airlines
7.4
Good
8,900 reviews

Overall

7.4

Boarding

7.7

Food

6.6

Entertainment

7.1

Comfort

7.3

Crew

8.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

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.

  • 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 $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 Ottawa?

Book flights to Ottawa if you plan to visit one of these locations
Gatineau
Petawawa

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Washington to Ottawa

See prices for flight routes from nearby airports that may be better suited for you.
Newark to Pearson Intl flights
Newark to Toronto Island flights
John F Kennedy Intl to Pearson Intl flights
John F Kennedy Intl to Pierre Elliott Trudeau Intl flights
Boston to Pearson Intl flights
LaGuardia to Pierre Elliott Trudeau Intl flights
LaGuardia to Pearson Intl flights
Newark to Pierre Elliott Trudeau Intl flights
O'Hare Intl to Pearson Intl flights
Dulles Intl to Pearson Intl flights
Reagan-National to Pearson Intl flights
Los Angeles to Pearson Intl flights
Boston to Toronto Island flights
Dallas/Fort Worth to Pearson Intl flights
San Francisco to Pearson Intl flights
Hobby to Pearson Intl flights
O'Hare Intl to Pierre Elliott Trudeau Intl flights
Dulles Intl to Toronto Island flights
Fort Lauderdale to Pearson Intl flights
Dulles Intl to Pierre Elliott Trudeau Intl flights
Seattle to Pearson Intl flights
Reagan-National to Pierre Elliott Trudeau Intl flights
Atlanta to Pearson Intl flights
John F Kennedy Intl to Toronto Island flights
San Francisco to Pierre Elliott Trudeau Intl flights
Baltimore to Pearson Intl flights
Los Angeles to Pierre Elliott Trudeau Intl flights
George Bush Intcntl to Pearson Intl flights
Minneapolis to Pearson Intl flights
Midway to Toronto Island flights
Boston to Pierre Elliott Trudeau Intl flights
Midway to Pearson Intl flights
Philadelphia to Pearson Intl flights
Orlando to Pearson Intl flights
Philadelphia to Pierre Elliott Trudeau Intl flights
O'Hare Intl to Toronto Island flights
Fort Lauderdale to Pierre Elliott Trudeau Intl flights
Raleigh to Pearson Intl flights
Atlanta to Pierre Elliott Trudeau Intl flights
Denver to Pierre Elliott Trudeau Intl flights
Baltimore to Pierre Elliott Trudeau Intl flights
Miami to Pearson Intl flights
San Diego to Pearson Intl flights
Seattle to Pierre Elliott Trudeau Intl flights
Denver to Pearson Intl flights
LaGuardia to Toronto Island flights
Charlotte to Pearson Intl flights
Dallas/Fort Worth to Pierre Elliott Trudeau Intl flights
Tampa to Pearson Intl flights
Nashville to Pearson Intl flights

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 July 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$244Average$524FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$282Average$887FlexibilityNo cancel feeOn-time69%
WestJetCheapest$294Average$390FlexibilityNo cancel feeOn-time60%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.