How long is the flight from Seattle to Thunder Bay?

Departing from Seattle to Thunder Bay will take you 13h 05m. Airlines will cover a distance of 1516 mi. This flight may include one or multiple stops.

In terms of precipitation, rainfall in Thunder Bay ranges from 0.4 - 3.5 inches per month. July is typically the wettest month, when rainfall can reach 3.5 in. February is typically the driest time to visit Thunder Bay when rainfall is around 0.4 in.

If weather is an important factor for your trip to Thunder Bay, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 6.8 F).

What is the cheapest time of day to fly from SEA to YQT?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Seattle to Thunder Bay as you normally would.

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.

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.

$621+ Flights from Seattle to Thunder Bay

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

Find cheap flights from Seattle to Thunder Bay with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 January 27, 2026.

Thu 6/117:35 pm

SEA

YQT

1 stop20h 25m

Multiple Airlines

Mon 6/157:50 pm

YQT

SEA

1 stop14h 00m

Multiple Airlines

Deal found 1/25

$621

Thu 6/117:35 pm

SEA

YQT

2 stops19h 50m

WestJet

Mon 6/157:35 pm

YQT

SEA

2 stops17h 05m

WestJet

Deal found 1/25

$636

Fri 2/68:00 pm

SEA

YQT

2 stops24h 50m

Air Canada

Tue 2/107:25 pm

YQT

SEA

2 stops22h 06m

Air Canada

Deal found 1/26

$862

Fri 2/67:00 am

SEA

YQT

2 stops13h 05m

United Airlines

Tue 2/107:25 pm

YQT

SEA

2 stops25h 49m

United Airlines

Deal found 1/25

$881

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 January 27, 2026.

Thu 6/117:35 pm

SEA

YQT

1 stop20h 25m

Multiple Airlines

Mon 6/157:50 pm

YQT

SEA

1 stop14h 00m

Multiple Airlines

Deal found 1/25

$621

Thu 6/117:35 pm

SEA

YQT

2 stops19h 50m

WestJet

Mon 6/157:35 pm

YQT

SEA

2 stops17h 05m

WestJet

Deal found 1/25

$636

Fri 2/68:00 pm

SEA

YQT

2 stops24h 50m

Air Canada

Tue 2/107:25 pm

YQT

SEA

2 stops22h 06m

Air Canada

Deal found 1/26

$862

Fri 2/67:00 am

SEA

YQT

2 stops13h 05m

United Airlines

Tue 2/107:25 pm

YQT

SEA

2 stops25h 49m

United Airlines

Deal found 1/25

$881

Last-minute flights from Seattle to Thunder Bay
Discover last-minute flight deals from Seattle to Thunder Bay. Data last updated January 27, 2026 and is based on user searches.

Fri 2/68:00 pm

SEA

YQT

2 stops24h 50m

Air Canada

Tue 2/107:25 pm

YQT

SEA

2 stops22h 06m

Air Canada

Deal found 1/26

$862

Fri 2/67:00 am

SEA

YQT

2 stops13h 05m

United Airlines

Tue 2/107:25 pm

YQT

SEA

2 stops25h 49m

United Airlines

Deal found 1/25

$881

Find flight deals from Seattle to Thunder Bay

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$621 (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

Search Deals

Cheapflights Fare Finder

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

SeattleThunder Bay

SEA - YQT

SEAYQT

Seattle/Tacoma Intl

Thu 6/11

7:35 pm-7:00 pm

1 stop20h 25m

Thunder Bay

Mon 6/15

7:50 pm-6:50 am

1 stop14h 00m

$621

SeattleThunder Bay

SEA - YQT

SEAYQT

Seattle/Tacoma Intl

Thu 6/11

7:35 pm-6:25 pm

2 stops19h 50m

Thunder Bay

Mon 6/15

7:35 pm-9:40 am

2 stops17h 05m

$636

SeattleThunder Bay

SEA - YQT

SEAYQT

Seattle/Tacoma Intl

Fri 2/6

8:00 pm-11:50 pm

2 stops24h 50m

Thunder Bay

Tue 2/10

7:25 pm-2:31 pm

2 stops22h 06m

$862

SeattleThunder Bay

SEA - YQT

SEAYQT

Seattle/Tacoma Intl

Fri 2/6

7:00 am-11:05 pm

2 stops13h 05m

Thunder Bay

Tue 2/10

7:25 pm-6:14 pm

2 stops25h 49m

$881

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/25

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

How long is the flight from Seattle to Thunder Bay?
Departing from Seattle to Thunder Bay will take you 13h 05m. 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

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Seattle to Thunder Bay

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

$621+ 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 6/11. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Seattle to Thunder Bay with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Seattle to Thunder Bay

Cheapest flights from Seattle to Thunder BayExplore 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 January 27, 2026.

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 January 27, 2026.

Find flight deals from Seattle to Thunder Bay

Most accurate provider

Most trusted provider

Round-trip from

Cheapflights Fare Finder

Use the filters below to find and compare flights from Seattle to Thunder Bay that are best for you.

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.

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?

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

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

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Seattle to Thunder Bay

See prices for flight routes from nearby airports that may be better suited for you.

100% Free

Book with Flexibility

Travel Smart

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 January 27, 2026.