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Thunder Bay

$536+ 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 3/11. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — YQT
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
1 adult, Economy
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Cheap flight deals from Seattle to Thunder Bay

Best flights from Seattle to Thunder Bay
Discover carefully curated flight deals from Seattle to Thunder Bay that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 12, 2025.

This Kiwi.com deal was found by Cheapflights users on 12/11. 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.
Wed 3/117:55 amSEA - YQT
1 stop10h 35mMultiple Airlines
Wed 3/186:20 amYQT - SEA
1 stop15h 45mMultiple Airlines
Deal found 12/11$536
This oojo deal was found by Cheapflights users on 12/11. 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 3/113:10 pmSEA - YQT
2 stops21h 01mWestJet
Wed 3/183:45 pmYQT - SEA
2 stops25h 34mWestJet
Deal found 12/11$545
This Air Canada deal was found by Cheapflights users on 12/10. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/28:10 amSEA - YQT
1 stop11h 55mAir Canada
Tue 3/35:00 amYQT - SEA
2 stops13h 01mAir Canada
Deal found 12/10$553
This United Airlines deal was found by Cheapflights users on 12/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/25:00 amSEA - YQT
2 stops15h 05mUnited Airlines
Tue 3/35:00 amYQT - SEA
3 stops16h 03mUnited Airlines
Deal found 12/9$776
This United Airlines deal was found by Cheapflights users on 12/11. 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.
Wed 3/1111:59 pmSEA - YQT
2 stops15h 26mUnited Airlines
Wed 3/1811:15 amYQT - SEA
3 stops15h 13mUnited Airlines
Deal found 12/11$998

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 December 12, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
1 star

Round-trip from

$526
(Expedia)
Provider with most accurate pricing for Seattle/Tacoma Intl-Thunder Bay flight deals.
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Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Thunder Bay flights.
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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 December 12, 2025.
Use the filters below to find and compare flights from Seattle to Thunder Bay that are best for you.

Fly from

Seattle

Fly to

Thunder Bay

Route

Depart

Return

Price

SeattleThunder Bay

SEA - YQT

SEAYQT

Seattle/Tacoma Intl

Wed 3/11

7:55 am-9:30 pm

1 stop10h 35m

Thunder Bay

Wed 3/18

6:20 am-7:05 pm

1 stop15h 45m

$536

SeattleThunder Bay

SEA - YQT

SEAYQT

Seattle/Tacoma Intl

Wed 3/11

3:10 pm-3:11 pm

2 stops21h 01m

Thunder Bay

Wed 3/18

3:45 pm-2:19 pm

2 stops25h 34m

$545

SeattleThunder Bay

SEA - YQT

SEAYQT

Seattle/Tacoma Intl

Mon 3/2

8:10 am-11:05 pm

1 stop11h 55m

Thunder Bay

Tue 3/3

5:00 am-3:01 pm

2 stops13h 01m

$553

SeattleThunder Bay

SEA - YQT

SEAYQT

Seattle/Tacoma Intl

Mon 3/2

5:00 am-11:05 pm

2 stops15h 05m

Thunder Bay

Tue 3/3

5:00 am-6:03 pm

3 stops16h 03m

$776

SeattleThunder Bay

SEA - YQT

SEAYQT

Seattle/Tacoma Intl

Wed 3/11

11:59 pm-6:25 pm

2 stops15h 26m

Thunder Bay

Wed 3/18

11:15 am-11:28 pm

3 stops15h 13m

$998

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/11

  • 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 11h 55m. Airlines will cover a distance of 1516 mi. This flight may include one or multiple stops.

  • 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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