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Thunder Bay

$562+ Cheap flights from Seattle (SEA) to Thunder Bay (YQT)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/5. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — YQT
Aug 22 — Aug 291
Sat 8/22
Sat 8/29
1 adult, Economy
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Cheap flight deals from Seattle to Thunder Bay

Cheapest flights from Seattle to Thunder Bay
Explore the most affordable flight options available from Seattle to Thunder Bay. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 23, 2026.

This Kiwi.com deal was found by Cheapflights users on 7/22. 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.
Sat 9/57:35 pm
SEA
-
YQT
1 stop20h 25m
Multiple Airlines
Sat 9/126:30 am
YQT
-
SEA
2 stops15h 15m
Multiple Airlines
Deal found 7/22$562
This WestJet deal was found by Cheapflights users on 7/18. 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 WestJet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/207:35 pm
SEA
-
YQT
2 stops20h 10m
WestJet
Sat 10/247:20 pm
YQT
-
SEA
2 stops22h 00m
WestJet
Deal found 7/18$717
This Air Canada deal was found by Cheapflights users on 7/20. 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.
Tue 10/205:40 am
SEA
-
YQT
2 stops14h 08m
Air Canada
Sat 10/2411:45 am
YQT
-
SEA
2 stops13h 57m
Air Canada
Deal found 7/20$777

Find flight deals from Seattle to Thunder Bay

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Thunder Bay (YQT). 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 23, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$562
(Kiwi.com)
Provider with most accurate pricing for Seattle/Tacoma Intl-Thunder Bay flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Thunder Bay flights.
Search Deals
From Seattle/Tacoma Intl to Thunder Bay
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle to Thunder Bay 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 23, 2026.
Use the filters below to find and compare flights from Seattle to Thunder Bay that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleThunder Bay

SEA - YQT

SEAYQT

Seattle/Tacoma Intl

Sat 9/5

7:35 pm-7:00 pm

1 stop20h 25m

Thunder Bay

Sat 9/12

6:30 am-6:45 pm

2 stops15h 15m

$562

SeattleThunder Bay

SEA - YQT

SEAYQT

Seattle/Tacoma Intl

Tue 10/20

7:35 pm-6:45 pm

2 stops20h 10m

Thunder Bay

Sat 10/24

7:20 pm-2:20 pm

2 stops46h 00m

$751
Quickest round-trip

SeattleThunder Bay

SEA - YQT

SEAYQT

Seattle/Tacoma Intl

Tue 10/20

8:00 am-10:48 pm

1 stop11h 48m

Thunder Bay

Sat 10/24

5:15 am-2:22 pm

2 stops12h 07m

$796

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/22

Sorted by cheapest first
  • Most accurate provider: When it comes to deals on Seattle-Thunder Bay flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Thunder Bay flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-Thunder Bay flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Seattle-Thunder Bay 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-Thunder Bay 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 Thunder Bay

Have a flexible travel schedule? Discover the best time to fly to Thunder Bay 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.

Related info for your journey

Find useful and relevant information for your journey from Seattle to Thunder Bay. 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 Thunder Bay?

    Departing from Seattle to Thunder Bay will take you 20h 10m. Airlines will cover a distance of 1516 mi.

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

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

  • How can I find direct flights from Seattle to Thunder Bay?

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

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

    Yes. Cheapflights offers flight deals from Seattle to Thunder Bay 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

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