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$153+ Cheap flights from Seattle (SEA) 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 9/28. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — YOW
Aug 26 — Sep 21
Wed 8/26
Wed 9/2
1 adult, Economy
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Cheap flight deals from Seattle to Ottawa

Cheapest flights from Seattle to Ottawa
Explore the most affordable flight options available from Seattle to Ottawa. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 27, 2026.

This Trip.com deal was found by Cheapflights users on 7/25. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/247:35 pm
SEA
-
YOW
1 stop7h 00m
WestJet
Mon 9/2812:25 pm
YOW
-
SEA
2 stops9h 20m
WestJet
Deal found 7/25$346
This Kiwi.com deal was found by Cheapflights users on 7/26. 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 9/157:35 pm
SEA
-
YOW
1 stop7h 00m
WestJet
Sat 9/261:20 pm
YOW
-
SEA
1 stop8h 25m
WestJet
Deal found 7/26$369
This Mytrip deal was found by Cheapflights users on 7/27. 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 10/227:35 pm
SEA
-
YOW
1 stop7h 00m
WestJet
Sat 10/246:55 am
YOW
-
SEA
2 stops14h 50m
WestJet
Deal found 7/27$382
This oojo deal was found by Cheapflights users on 7/27. 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 9/97:35 pm
SEA
-
YOW
1 stop7h 00m
WestJet
Sat 9/191:20 pm
YOW
-
SEA
1 stop8h 25m
WestJet
Deal found 7/27$385
This Trip.com deal was found by Cheapflights users on 7/27. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/187:35 pm
SEA
-
YOW
1 stop7h 00m
WestJet
Fri 9/258:15 pm
YOW
-
SEA
1 stop25h 30m
WestJet
Deal found 7/27$391

Find flight deals from Seattle to Ottawa

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) 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 July 27, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$346
(Trip.com)

One-way from

$153
(Kiwi.com)

Popular in

July

Cheapest in

April

Average price

$760
Provider with most accurate pricing for Seattle/Tacoma Intl-Ottawa flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Ottawa flights.
Search Deals
From Seattle/Tacoma Intl to Ottawa
Search Deals
One-way flight from Seattle/Tacoma Intl to Ottawa
Search Deals
Highest demand for flights based on searches. 19% potential increase in price ($133 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($23 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle 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 27, 2026.
Use the filters below to find and compare flights from Seattle to Ottawa that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Thu 9/24

7:35 pm-5:35 am

1 stop7h 00m

Ottawa

Mon 9/28

8:15 pm-9:40 am

1 stop16h 25m

$370

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Fri 10/16

7:35 pm-5:35 am

1 stop7h 00m

Ottawa

Sun 10/18

6:55 am-6:45 pm

2 stops14h 50m

$421

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Sun 9/6

7:35 pm-5:35 am

1 stop7h 00m

Ottawa

Sun 9/13

4:15 pm-9:40 am

1 stop20h 25m

$455

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Thu 8/13

7:00 am-5:15 pm

1 stop7h 15m

Ottawa

Thu 8/20

12:25 pm-6:45 pm

2 stops9h 20m

$458

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Wed 8/26

10:30 am-12:40 am

1 stop11h 10m

Ottawa

Wed 9/2

12:25 pm-9:00 pm

2 stops11h 35m

$458

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Fri 9/4

7:35 pm-5:35 am

1 stop7h 00m

Ottawa

Fri 9/11

4:15 pm-6:45 pm

1 stop29h 30m

$475

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Fri 9/4

7:35 pm-12:40 am

1 stop26h 05m

Ottawa

Sat 9/12

1:20 pm-6:45 pm

1 stop8h 25m

$480

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Mon 8/10

7:35 pm-5:35 pm

2 stops19h 00m

Ottawa

Thu 8/13

12:25 pm-9:40 am

2 stops24h 15m

$515

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Thu 8/20

7:00 am-5:15 pm

1 stop7h 15m

Ottawa

Mon 9/14

1:20 pm-6:45 pm

1 stop8h 25m

$551
Quickest round-trip

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Tue 9/22

7:35 pm-5:35 am

1 stop7h 00m

Ottawa

Thu 9/24

1:20 pm-6:45 pm

1 stop8h 25m

$556

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/27

Showing 1-10 of 18 resultsSorted by cheapest first
1
2

Compare providers for flights from Seattle 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 Seattle to Ottawa in July.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice 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 Seattle-Ottawa flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Ottawa flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-Ottawa flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Seattle-Ottawa flights, Cheapflights users trust FlightHub the most. FlightHub 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 Seattle-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 Seattle to Ottawa

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

How much does it cost to fly round-trip from Seattle to Ottawa?

Airfare is below average for this route at the moment.

Seattle to Ottawa flights typically cost between $550 and $826 in September.
The cheapest round-trip price found within the last 5 days was $346 on WestJet (Sep 24-Sep 28).

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 27, 2026.
Read reviews from past customers who have flown United Airlines,WestJet, andAir Canada from Seattle to Ottawa. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
10,046 reviews

Entertainment

7.1

Overall

7.4

Comfort

7.3

Boarding

7.7

Food

6.6

Crew

8.1

Reviews

1 / 20
6.0
Good

Miz,Oct 2024

EWR - YYZ

I booked on United but it was really Air Canada. It was very confusing when I went to the airport. The ride to NY was very turbulent and shaky. The ride back was better. It would be nicer with more leg room and to get rid of the tilting the seat back thing. Fine for an hour flight but any longer would have been not great. Please put subtitles on the programs so we don;t have t use headphones if we forget them.
United Airlines
7.4
Good
10,046 reviews
United Airlines
7.4
Good
10,046 reviews

Entertainment

7.1

Overall

7.4

Comfort

7.3

Boarding

7.7

Food

6.6

Crew

8.1

Reviews

1 / 20
6.0
Good

Miz,Oct 2024

EWR - YYZ

I booked on United but it was really Air Canada. It was very confusing when I went to the airport. The ride to NY was very turbulent and shaky. The ride back was better. It would be nicer with more leg room and to get rid of the tilting the seat back thing. Fine for an hour flight but any longer would have been not great. Please put subtitles on the programs so we don;t have t use headphones if we forget them.
WestJet
7.2
Good
3,415 reviews
United Airlines
7.4
Good
10,046 reviews

Entertainment

7.1

Overall

7.4

Comfort

7.3

Boarding

7.7

Food

6.6

Crew

8.1

Reviews

1 / 20
6.0
Good

Miz,Oct 2024

EWR - YYZ

I booked on United but it was really Air Canada. It was very confusing when I went to the airport. The ride to NY was very turbulent and shaky. The ride back was better. It would be nicer with more leg room and to get rid of the tilting the seat back thing. Fine for an hour flight but any longer would have been not great. Please put subtitles on the programs so we don;t have t use headphones if we forget them.
Air Canada
7.1
Good
11,398 reviews
United Airlines
7.4
Good
10,046 reviews

Entertainment

7.1

Overall

7.4

Comfort

7.3

Boarding

7.7

Food

6.6

Crew

8.1

Reviews

1 / 20
6.0
Good

Miz,Oct 2024

EWR - YYZ

I booked on United but it was really Air Canada. It was very confusing when I went to the airport. The ride to NY was very turbulent and shaky. The ride back was better. It would be nicer with more leg room and to get rid of the tilting the seat back thing. Fine for an hour flight but any longer would have been not great. Please put subtitles on the programs so we don;t have t use headphones if we forget them.

Related info for your journey

Find useful and relevant information for your journey from Seattle to Ottawa. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Seattle to Ottawa?

    There are many flights that can get you from Seattle to Ottawa in 7h. Fly via WestJet to get the fastest option. Seattle and Ottawa are separated by a distance of 2193 mi.

  • What are the cheapest airlines flying from Seattle to Ottawa round-trip?

    According to our current data, WestJet ($266), Air Canada ($354), and United Airlines ($362) offers the cheapest pricing from Seattle to Ottawa. Users have found that WestJet is 50% cheaper than the other options available to this destination.

  • What are the cheapest airlines to fly from Seattle to Ottawa one-way?

    The cheapest airlines for a one-way flight from Seattle to Ottawa are United Airlines ($129), Air Canada ($145), and WestJet ($150).

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Seattle 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.

See more FAQs

Traveling to a place near Ottawa?

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Gatineau

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Top 3 airlines flying from Seattle to Ottawa

Discover the top 3 airlines that operate flights from Seattle 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 27, 2026.
AirlineCheapestAverageFlexibilityOn-time
WestJetCheapest$266Average$426FlexibilityNo cancel feeOn-time60%
Air CanadaCheapest$354Average$578FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$362Average$614FlexibilityNo cancel feeOn-time69%

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