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Cheap flights from Seattle to Thunder Bay from $176

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Thunder Bay departing on 9/20. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from Seattle to Thunder Bay

Cheap round-trip flights

Enter your travel dates to find the best prices.
WestJet Logo
7:35 pm - 7:00 pmSEA  Seattle/Tacoma Intl-YQT Thunder Bay
20h 25m1 stop Calgary
WestJet Logo
7:20 pm - 2:20 pmYQT  Thunder Bay-SEA Seattle/Tacoma Intl
46h 00m2 stops Winnipeg Calgary
$569WestJet
Thu, Oct 15 - Sat, Oct 24
WestJet Logo
7:35 pm - 7:00 pmSEA  Seattle/Tacoma Intl-YQT Thunder Bay
20h 25m1 stop Calgary
WestJet Logo
7:50 pm - 6:45 pmYQT  Thunder Bay-SEA Seattle/Tacoma Intl
25h 55m1 stop Calgary
$599WestJet
Thu, Oct 15 - Mon, Oct 19
WestJet Logo
7:35 pm - 7:00 pmSEA  Seattle/Tacoma Intl-YQT Thunder Bay
20h 25m1 stop Calgary
WestJet Logo
7:50 pm - 6:45 pmYQT  Thunder Bay-SEA Seattle/Tacoma Intl
25h 55m1 stop Calgary
$610WestJet
Thu, Oct 15 - Mon, Oct 19
Air Canada Logo
7:20 pm - 10:48 amSEA  Seattle/Tacoma Intl-YQT Thunder Bay
12h 28m2 stops Vancouver Intl Toronto Pearson Intl
Air Canada Logo
5:15 am - 2:22 pmYQT  Thunder Bay-SEA Seattle/Tacoma Intl
12h 07m2 stops Toronto Pearson Intl Vancouver Intl
$656Air Canada
Thu, Oct 15 - Sat, Oct 24
WestJet Logo
7:35 pm - 7:00 pmSEA  Seattle/Tacoma Intl-YQT Thunder Bay
20h 25m1 stop Calgary
WestJet Logo
11:00 am - 6:45 pmYQT  Thunder Bay-SEA Seattle/Tacoma Intl
10h 45m2 stops Winnipeg Calgary
$668WestJet
Thu, Oct 15 - Mon, Oct 19
WestJet Logo
7:35 pm - 7:00 pmSEA  Seattle/Tacoma Intl-YQT Thunder Bay
20h 25m1 stop Calgary
WestJet Logo
11:00 am - 6:45 pmYQT  Thunder Bay-SEA Seattle/Tacoma Intl
10h 45m2 stops Winnipeg Calgary
$675WestJet
Thu, Oct 15 - Mon, Oct 19
WestJet Logo
7:35 pm - 7:00 pmSEA  Seattle/Tacoma Intl-YQT Thunder Bay
20h 25m1 stop Calgary
WestJet Logo
7:20 pm - 9:40 amYQT  Thunder Bay-SEA Seattle/Tacoma Intl
17h 20m2 stops Winnipeg Calgary
$676WestJet
Thu, Oct 1 - Sat, Oct 3
Multiple Airlines Logo
7:35 pm - 7:00 pmSEA  Seattle/Tacoma Intl-YQT Thunder Bay
20h 25m1 stop Calgary
Multiple Airlines Logo
8:15 am - 7:26 pmYQT  Thunder Bay-SEA Seattle/Tacoma Intl
14h 11m1 stop Toronto Island
$683Multiple Airlines
Thu, Oct 15 - Sat, Oct 24
Air Canada Logo
7:45 am - 10:36 pmSEA  Seattle/Tacoma Intl-YQT Thunder Bay
11h 51m1 stop Toronto Pearson Intl
Air Canada Logo
11:15 am - 8:59 pmYQT  Thunder Bay-SEA Seattle/Tacoma Intl
12h 44m1 stop Toronto Pearson Intl
$694Air Canada
Thu, Jan 14 - Tue, Jan 19
Air Canada Logo
7:20 pm - 10:48 amSEA  Seattle/Tacoma Intl-YQT Thunder Bay
12h 28m2 stops Vancouver Intl Toronto Pearson Intl
Air Canada Logo
5:15 am - 2:22 pmYQT  Thunder Bay-SEA Seattle/Tacoma Intl
12h 07m2 stops Toronto Pearson Intl Vancouver Intl
$798Air Canada
Thu, Oct 15 - Mon, Oct 19

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WestJet flights from Seattle to Thunder Bay

Our best WestJet deals on Seattle to Thunder Bay flight tickets
WestJet
Oct 15
SEA7:35 pmSeattle/Tacoma Intl
20h 25m
1 stop
YQT7:00 pmThunder Bay
Oct 24
YQT7:20 pmThunder Bay
46h 00m
2 stops
SEA2:20 pmSeattle/Tacoma Intl
$569
WestJet
Oct 15
SEA7:35 pmSeattle/Tacoma Intl
20h 25m
1 stop
YQT7:00 pmThunder Bay
Oct 19
YQT7:50 pmThunder Bay
25h 55m
1 stop
SEA6:45 pmSeattle/Tacoma Intl
$599
WestJet
Oct 15
SEA7:35 pmSeattle/Tacoma Intl
20h 25m
1 stop
YQT7:00 pmThunder Bay
Oct 19
YQT7:50 pmThunder Bay
25h 55m
1 stop
SEA6:45 pmSeattle/Tacoma Intl
$610

Air Canada flights from Seattle to Thunder Bay

Our best Air Canada deals on Seattle to Thunder Bay flight tickets
Air Canada
Oct 15
SEA7:20 pmSeattle/Tacoma Intl
12h 28m
2 stops
YQT10:48 amThunder Bay
Oct 24
YQT5:15 amThunder Bay
12h 07m
2 stops
SEA2:22 pmSeattle/Tacoma Intl
$656
Air Canada
Jan 14
SEA7:45 amSeattle/Tacoma Intl
11h 51m
1 stop
YQT10:36 pmThunder Bay
Jan 19
YQT11:15 amThunder Bay
12h 44m
1 stop
SEA8:59 pmSeattle/Tacoma Intl
$694
Air Canada
Oct 15
SEA7:20 pmSeattle/Tacoma Intl
12h 28m
2 stops
YQT10:48 amThunder Bay
Oct 19
YQT5:15 amThunder Bay
12h 07m
2 stops
SEA2:22 pmSeattle/Tacoma Intl
$798

momondo 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, momondo users made 832,500 searches. Data last updated August 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 Seattle/Tacoma Intl - YQT Thunder Bay

SEAYQT

Seattle/Tacoma Intl

Thu 10/15

7:35 pm-7:00 pm

1 stop20h 25m

Thunder Bay

Sat 10/24

7:20 pm-2:20 pm

2 stops46h 00m

$569

SeattleThunder Bay

SEA Seattle/Tacoma Intl - YQT Thunder Bay

SEAYQT

Seattle/Tacoma Intl

Thu 10/15

7:35 pm-7:00 pm

1 stop20h 25m

Thunder Bay

Mon 10/19

7:50 pm-6:45 pm

1 stop25h 55m

$599

SeattleThunder Bay

SEA Seattle/Tacoma Intl - YQT Thunder Bay

SEAYQT

Seattle/Tacoma Intl

Thu 10/15

7:35 pm-7:00 pm

1 stop20h 25m

Thunder Bay

Mon 10/19

7:50 pm-6:45 pm

1 stop25h 55m

$610
Quickest round-trip

SeattleThunder Bay

SEA Seattle/Tacoma Intl - YQT Thunder Bay

SEAYQT

Seattle/Tacoma Intl

Thu 10/15

7:20 pm-10:48 am

2 stops12h 28m

Thunder Bay

Sat 10/24

5:15 am-2:22 pm

2 stops12h 07m

$656

SeattleThunder Bay

SEA Seattle/Tacoma Intl - YQT Thunder Bay

SEAYQT

Seattle/Tacoma Intl

Thu 10/15

7:35 pm-7:00 pm

1 stop20h 25m

Thunder Bay

Mon 10/19

11:00 am-6:45 pm

2 stops10h 45m

$668

SeattleThunder Bay

SEA Seattle/Tacoma Intl - YQT Thunder Bay

SEAYQT

Seattle/Tacoma Intl

Thu 10/15

7:35 pm-7:00 pm

1 stop20h 25m

Thunder Bay

Mon 10/19

11:00 am-6:45 pm

2 stops10h 45m

$675

SeattleThunder Bay

SEA Seattle/Tacoma Intl - YQT Thunder Bay

SEAYQT

Seattle/Tacoma Intl

Thu 10/1

7:35 pm-7:00 pm

1 stop20h 25m

Thunder Bay

Sat 10/3

7:20 pm-9:40 am

2 stops17h 20m

$676

SeattleThunder Bay

SEA Seattle/Tacoma Intl - YQT Thunder Bay

SEAYQT

Seattle/Tacoma Intl

Thu 10/15

7:35 pm-7:00 pm

1 stop20h 25m

Thunder Bay

Sat 10/24

8:15 am-7:26 pm

1 stop14h 11m

$683

SeattleThunder Bay

SEA Seattle/Tacoma Intl - YQT Thunder Bay

SEAYQT

Seattle/Tacoma Intl

Thu 1/14

7:45 am-10:36 pm

1 stop11h 51m

Thunder Bay

Tue 1/19

11:15 am-8:59 pm

1 stop12h 44m

$694

SeattleThunder Bay

SEA Seattle/Tacoma Intl - YQT Thunder Bay

SEAYQT

Seattle/Tacoma Intl

Thu 10/15

7:20 pm-10:48 am

2 stops12h 28m

Thunder Bay

Mon 10/19

5:15 am-2:22 pm

2 stops12h 07m

$798

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 resultsSorted by cheapest first
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How to get the cheapest flight ticket from Seattle to Thunder Bay

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Can stopping save me money on Seattle to Thunder Bay flights?

You could potentially save up to 43% on your flight if you consider stops on a Seattle to Thunder Bay flight.

When to book flights from Seattle to Thunder Bay

Are you open to changing your travel dates? Check out the ideal times to fly from Seattle to Thunder Bay according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Seattle to Thunder Bay (SEA to YQT) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to Thunder Bay

Fastest flight time

12h 48m

Direct flights

None
The fastest flight from Seattle to Thunder Bay takes 12h 48m
There are no direct flights from Seattle to Thunder Bay. There are no popular flight routes from Seattle to Thunder Bay.
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Frequently asked questions about flying from Seattle to Thunder Bay

  • How far is Seattle/Tacoma Intl to Thunder Bay by plane?

    The distance between Seattle/Tacoma Intl and Thunder Bay is about 1517.8 mi. Typically, this will take 12h 48m by plane in normal conditions.

  • When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Thunder Bay Airport?

    Prices for flights from Seattle/Tacoma Intl Airport to Thunder Bay Airport are updated daily.

  • How old do you have to be to fly from Seattle/Tacoma Intl Airport to Thunder Bay Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Thunder Bay Airport.

  • What documentation or ID do you need to fly to Thunder Bay Airport?

    The required travel and health documents for your Thunder Bay Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Thunder Bay Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Why use momondo?

Why should I use momondo to find a flight deal from Seattle to Thunder Bay?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Seattle to Thunder Bay for you.

Can I find flights from Seattle to Thunder Bay with flexible booking policies on momondo?

momondo does allow users to show only those flights to Thunder Bay from Seattle which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from Seattle to Thunder Bay?

Once all potential Seattle to Thunder Bay flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Seattle to Thunder Bay right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Seattle to Thunder Bay flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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