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$185+ 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 7/14. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — YOW
Jul 11 — Jul 181
Sat 7/11
Sat 7/18
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 June 11, 2026.

This Booking.com deal was found by Cheapflights users on 6/7. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/167:00 am
SEA
-
YOW
1 stop9h 20m
WestJet
Thu 7/231:20 pm
YOW
-
SEA
1 stop8h 25m
WestJet
Deal found 6/7$403
This CheapOair deal was found by Cheapflights users on 6/8. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/157:00 am
SEA
-
YOW
1 stop7h 15m
WestJet
Thu 8/271:20 pm
YOW
-
SEA
1 stop8h 25m
WestJet
Deal found 6/8$422
This Booking.com deal was found by Cheapflights users on 6/8. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/77:35 pm
SEA
-
YOW
1 stop7h 00m
WestJet
Tue 7/141:20 pm
YOW
-
SEA
1 stop8h 25m
WestJet
Deal found 6/8$423
This Trip.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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/187:35 pm
SEA
-
YOW
1 stop7h 00m
WestJet
Mon 7/271:20 pm
YOW
-
SEA
1 stop8h 25m
WestJet
Deal found 6/10$441
This Trip.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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/37:35 pm
SEA
-
YOW
1 stop7h 00m
WestJet
Mon 9/71:20 pm
YOW
-
SEA
1 stop8h 25m
WestJet
Deal found 6/10$442
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.
Fri 9/47:35 pm
SEA
-
YOW
1 stop7h 00m
WestJet
Mon 9/71:20 pm
YOW
-
SEA
1 stop8h 25m
WestJet
Deal found 6/10$449
This Booking.com deal was found by Cheapflights users on 6/8. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/97:35 pm
SEA
-
YOW
1 stop7h 00m
WestJet
Thu 7/164:15 pm
YOW
-
SEA
1 stop20h 25m
WestJet
Deal found 6/8$452
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/217:00 am
SEA
-
YOW
1 stop7h 15m
WestJet
Thu 7/231:20 pm
YOW
-
SEA
1 stop8h 25m
WestJet
Deal found 6/9$455
This CheapOair deal was found by Cheapflights users on 6/8. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/2510:30 am
SEA
-
YOW
2 stops10h 50m
WestJet
Sat 8/14:15 pm
YOW
-
SEA
1 stop20h 25m
WestJet
Deal found 6/8$466
This FlightHub deal was found by Cheapflights users on 6/8. 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.
Thu 7/167:00 am
SEA
-
YOW
1 stop9h 20m
WestJet
Thu 8/271:20 pm
YOW
-
SEA
1 stop8h 25m
WestJet
Deal found 6/8$470

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 June 11, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$403
(Booking.com)

One-way from

$185
(CheapOair)

Popular in

June

Cheapest in

April

Average price

$764
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. 12% potential increase in price ($75 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($26 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 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 June 11, 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

Tue 7/7

7:35 pm-7:20 pm

1 stop20h 45m

Ottawa

Tue 7/14

6:55 am-6:45 pm

2 stops14h 50m

$465

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Fri 9/4

7:35 pm-5:35 am

1 stop7h 00m

Ottawa

Mon 9/7

6:55 am-6:45 pm

2 stops14h 50m

$476

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Wed 6/24

10:30 am-12:20 am

2 stops10h 50m

Ottawa

Tue 7/7

1:20 pm-9:00 pm

1 stop10h 40m

$500

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Tue 7/21

7:00 am-3:20 pm

1 stop29h 20m

Ottawa

Thu 7/23

4:00 pm-9:40 am

3 stops20h 40m

$511

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Sun 6/28

10:30 am-5:35 am

1 stop16h 05m

Ottawa

Fri 7/3

4:15 pm-9:40 am

1 stop20h 25m

$512

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Wed 10/21

8:10 am-11:54 pm

1 stop12h 44m

Ottawa

Sun 10/25

2:10 pm-8:54 pm

1 stop9h 44m

$557

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Wed 9/23

11:04 pm-9:56 am

1 stop7h 52m

Ottawa

Sat 9/26

6:00 am-4:06 pm

3 stops13h 06m

$569

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Wed 10/21

10:30 am-5:15 pm

1 stop27h 45m

Ottawa

Sun 10/25

6:00 am-2:20 pm

1 stop11h 20m

$592
Quickest round-trip

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Thu 7/16

7:00 am-7:20 pm

1 stop9h 20m

Ottawa

Thu 7/23

1:20 pm-6:45 pm

1 stop8h 25m

$606

SeattleOttawa

SEA - YOW

SEAYOW

Seattle/Tacoma Intl

Thu 8/27

11:04 pm-9:56 am

1 stop7h 52m

Ottawa

Sat 8/29

6:00 am-7:07 pm

3 stops16h 07m

$647

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/8

Showing 1-10 of 16 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 June.
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?

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 11, 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
9,804 reviews

Entertainment

7.1

Food

6.6

Boarding

7.7

Crew

8.1

Overall

7.4

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.
United Airlines
7.4
Good
9,804 reviews
United Airlines
7.4
Good
9,804 reviews

Entertainment

7.1

Food

6.6

Boarding

7.7

Crew

8.1

Overall

7.4

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.
WestJet
7.2
Good
3,356 reviews
United Airlines
7.4
Good
9,804 reviews

Entertainment

7.1

Food

6.6

Boarding

7.7

Crew

8.1

Overall

7.4

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.
Air Canada
7.1
Good
11,163 reviews
United Airlines
7.4
Good
9,804 reviews

Entertainment

7.1

Food

6.6

Boarding

7.7

Crew

8.1

Overall

7.4

Comfort

7.3

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.

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 20h 45m. 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 ($357), and United Airlines ($368) offers the cheapest pricing from Seattle to Ottawa. Users have found that WestJet is 48% 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 ($150), 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?

Book flights to Ottawa if you plan to visit one of these locations
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 June 11, 2026.
AirlineCheapestAverageFlexibilityOn-time
WestJetCheapest$266Average$394FlexibilityNo cancel feeOn-time60%
Air CanadaCheapest$357Average$570FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$368Average$614FlexibilityNo cancel feeOn-time69%

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