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$156+ 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 7/19. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — YOW
May 24 — May 311
Sun 5/24
Sun 5/31
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 April 24, 2026.

This Trip.com deal was found by Cheapflights users on 4/19. 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 5/87:35 pm
SEA
-
YOW
1 stop7h 00m
WestJet
Thu 5/141:20 pm
YOW
-
SEA
1 stop8h 25m
WestJet
Deal found 4/19$337
This Trip.com deal was found by Cheapflights users on 4/22. 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.
Sat 7/410:30 am
SEA
-
YOW
2 stops10h 50m
WestJet
Sun 7/121:20 pm
YOW
-
SEA
1 stop8h 25m
WestJet
Deal found 4/22$340
This Trip.com deal was found by Cheapflights users on 4/22. 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 7/1610:30 am
SEA
-
YOW
2 stops10h 50m
WestJet
Mon 7/206:55 am
YOW
-
SEA
2 stops14h 50m
WestJet
Deal found 4/22$344
This Kiwi.com deal was found by Cheapflights users on 4/23. 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 5/267:35 pm
SEA
-
YOW
1 stop7h 00m
WestJet
Tue 6/21:20 pm
YOW
-
SEA
1 stop8h 25m
WestJet
Deal found 4/23$350
This Kiwi.com deal was found by Cheapflights users on 4/22. 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 7/177:35 pm
SEA
-
YOW
1 stop7h 00m
WestJet
Tue 7/211:20 pm
YOW
-
SEA
1 stop8h 25m
WestJet
Deal found 4/22$352
This Kiwi.com deal was found by Cheapflights users on 4/22. 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 5/177:35 pm
SEA
-
YOW
1 stop7h 00m
WestJet
Wed 6/241:20 pm
YOW
-
SEA
1 stop8h 25m
WestJet
Deal found 4/22$356
This Kiwi.com deal was found by Cheapflights users on 4/22. 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 5/197:35 pm
SEA
-
YOW
1 stop7h 00m
WestJet
Wed 6/241:20 pm
YOW
-
SEA
1 stop8h 25m
WestJet
Deal found 4/22$357
This Justfly.com deal was found by Cheapflights users on 4/22. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/157:35 pm
SEA
-
YOW
1 stop7h 00m
WestJet
Tue 7/211:20 pm
YOW
-
SEA
1 stop8h 25m
WestJet
Deal found 4/22$360
This Trip.com deal was found by Cheapflights users on 4/21. 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.
Sat 6/67:35 pm
SEA
-
YOW
1 stop7h 00m
WestJet
Sat 6/131:20 pm
YOW
-
SEA
1 stop8h 25m
WestJet
Deal found 4/21$363
This Kiwi.com deal was found by Cheapflights users on 4/21. 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 5/267:35 pm
SEA
-
YOW
1 stop7h 00m
WestJet
Mon 6/296:15 pm
YOW
-
SEA
2 stops18h 25m
WestJet
Deal found 4/21$366

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 April 24, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$337
(Trip.com)

One-way from

$156
(Trip.com)

Popular in

December

Cheapest in

October

Average price

$520
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. 11% potential increase in price ($64 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 April 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 April 24, 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
Quickest round-trip

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Fri 5/8

7:35 pm-5:35 am

1 stop7h 00m

Ottawa

Thu 5/14

1:20 pm-6:45 pm

1 stop8h 25m

$337

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Tue 5/26

7:35 pm-5:35 am

1 stop7h 00m

Ottawa

Mon 6/29

6:00 am-6:45 pm

1 stop15h 45m

$369

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Sun 5/17

7:35 pm-5:35 am

1 stop7h 00m

Ottawa

Wed 6/24

6:15 pm-9:40 am

2 stops18h 25m

$387

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Tue 8/4

7:35 pm-5:35 am

1 stop7h 00m

Ottawa

Mon 8/10

1:20 pm-6:45 pm

1 stop8h 25m

$401

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Sun 6/7

7:20 pm-6:00 am

1 stop7h 40m

Ottawa

Sun 6/14

5:05 am-10:05 am

1 stop8h 00m

$403

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Fri 6/5

10:30 am-12:20 am

2 stops10h 50m

Ottawa

Sun 6/7

4:15 pm-6:45 pm

1 stop29h 30m

$427

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Sat 7/25

7:35 pm-5:35 am

1 stop7h 00m

Ottawa

Sat 8/1

6:15 pm-9:40 am

2 stops18h 25m

$440

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Sat 5/30

7:35 pm-5:35 pm

2 stops19h 00m

Ottawa

Tue 6/2

1:20 pm-6:45 pm

1 stop8h 25m

$465

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Sat 5/30

7:20 pm-6:00 am

1 stop7h 40m

Ottawa

Tue 6/2

6:55 am-2:20 pm

1 stop10h 25m

$478
Cheapest one-way

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Tue 5/19

10:30 am-12:20 am

2 stops10h 50m

$175

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/22

Showing 1-10 of 19 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 April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
Trip.comPrice Accuracy1 starTrust 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 far ahead should I book a flight from Seattle to Ottawa?

The price you pay for your flight from Seattle to Ottawa may vary depending on when you book. For the best chance of a lower fare, look to book 83 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

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 24, 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
9,643 reviews

Entertainment

7.1

Comfort

7.3

Boarding

7.7

Food

6.6

Crew

8.1

Overall

7.4

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

DFW - EWR

The flight was on time. Crew was friendly. Will fly again. The seats was comfortable.
United Airlines
7.4
Good
9,643 reviews
United Airlines
7.4
Good
9,643 reviews

Entertainment

7.1

Comfort

7.3

Boarding

7.7

Food

6.6

Crew

8.1

Overall

7.4

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

DFW - EWR

The flight was on time. Crew was friendly. Will fly again. The seats was comfortable.
WestJet
7.2
Good
3,325 reviews
United Airlines
7.4
Good
9,643 reviews

Entertainment

7.1

Comfort

7.3

Boarding

7.7

Food

6.6

Crew

8.1

Overall

7.4

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

DFW - EWR

The flight was on time. Crew was friendly. Will fly again. The seats was comfortable.
Air Canada
7.1
Good
10,961 reviews
United Airlines
7.4
Good
9,643 reviews

Entertainment

7.1

Comfort

7.3

Boarding

7.7

Food

6.6

Crew

8.1

Overall

7.4

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

DFW - EWR

The flight was on time. Crew was friendly. Will fly again. The seats was comfortable.

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, United Airlines ($238), WestJet ($266), and Air Canada ($354) offers the cheapest pricing from Seattle to Ottawa. Users have found that United Airlines is 53% 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 WestJet ($126), United Airlines ($129), and Air Canada ($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?

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

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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 April 24, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$238Average$614FlexibilityNo cancel feeOn-time69%
WestJetCheapest$266Average$394FlexibilityNo cancel feeOn-time60%
Air CanadaCheapest$354Average$550FlexibilityNo cancel feeOn-time67%

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