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Thunder Bay

$222+ Cheap flights from Seattle (SEA) to Thunder Bay (YQT)

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 4/20. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — YQT
Apr 10 — Apr 171
Fri 4/10
Fri 4/17
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 March 11, 2026.

This WestJet deal was found by Cheapflights users on 3/8. 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 WestJet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/297:35 pm
SEA
-
YQT
1 stop20h 25m
WestJet
Sun 5/37:50 pm
YQT
-
SEA
1 stop25h 55m
WestJet
Deal found 3/8$436
This Kiwi.com deal was found by Cheapflights users on 3/9. 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.
Thu 4/233:10 pm
SEA
-
YQT
2 stops38h 45m
Multiple Airlines
Thu 4/307:50 pm
YQT
-
SEA
1 stop16h 50m
Multiple Airlines
Deal found 3/9$446
This Kiwi.com deal was found by Cheapflights users on 3/6. 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 4/218:05 am
SEA
-
YQT
1 stop10h 25m
Multiple Airlines
Tue 4/287:20 pm
YQT
-
SEA
2 stops17h 20m
Multiple Airlines
Deal found 3/6$528
This Kiwi.com deal was found by Cheapflights users on 3/6. 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 6/247:00 am
SEA
-
YQT
1 stop9h 00m
WestJet
Sat 6/2711:00 am
YQT
-
SEA
2 stops13h 00m
WestJet
Deal found 3/6$546
This Mytrip deal was found by Cheapflights users on 3/9. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/233:10 pm
SEA
-
YQT
2 stops21h 01m
WestJet
Thu 4/307:20 pm
YQT
-
SEA
2 stops17h 20m
WestJet
Deal found 3/9$560

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 March 11, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$436
(WestJet)

One-way from

$222
(Kiwi.com)
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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One-way flight 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 March 11, 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

Wed 4/29

7:35 pm-7:00 pm

1 stop20h 25m

Thunder Bay

Sun 5/3

7:50 pm-6:45 pm

1 stop25h 55m

$436

SeattleThunder Bay

SEA - YQT

SEAYQT

Seattle/Tacoma Intl

Thu 4/23

3:10 pm-8:55 am

2 stops38h 45m

Thunder Bay

Thu 4/30

7:50 pm-9:40 am

1 stop16h 50m

$446

SeattleThunder Bay

SEA - YQT

SEAYQT

Seattle/Tacoma Intl

Thu 4/23

3:10 pm-3:11 pm

2 stops21h 01m

Thunder Bay

Thu 4/30

7:20 pm-9:40 am

2 stops17h 20m

$560
Quickest round-trip

SeattleThunder Bay

SEA - YQT

SEAYQT

Seattle/Tacoma Intl

Wed 4/29

8:00 pm-10:05 am

2 stops11h 05m

Thunder Bay

Sun 5/3

5:05 am-2:20 pm

2 stops12h 15m

$563

SeattleThunder Bay

SEA - YQT

SEAYQT

Seattle/Tacoma Intl

Wed 6/24

7:20 pm-10:54 am

2 stops12h 34m

Thunder Bay

Sat 6/27

6:20 pm-9:52 am

2 stops18h 32m

$582
Cheapest one-way

SeattleThunder Bay

SEA - YQT

SEAYQT

Seattle/Tacoma Intl

Mon 4/20

8:45 pm-8:55 am

3 stops57h 10m

$222

SeattleThunder Bay

SEA - YQT

SEAYQT

Seattle/Tacoma Intl

Thu 4/23

5:40 am-11:00 pm

2 stops14h 20m

$277
Quickest one-way

SeattleThunder Bay

SEA - YQT

SEAYQT

Seattle/Tacoma Intl

Sat 7/11

7:20 pm-10:44 am

2 stops12h 24m

$277

SeattleThunder Bay

SEA - YQT

SEAYQT

Seattle/Tacoma Intl

Sat 7/11

7:00 am-10:25 am

3 stops24h 25m

$322

SeattleThunder Bay

SEA - YQT

SEAYQT

Seattle/Tacoma Intl

Thu 4/23

12:08 pm-11:00 pm

3 stops31h 52m

$354

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/9

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 25m. 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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