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Cheap flights from Seattle to Thunder Bay from $271

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 10/28. 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
10:30 am - 6:45 pmSEA  Seattle/Tacoma Intl-YQT Thunder Bay
29h 15m2 stops Calgary Winnipeg
WestJet Logo
7:20 pm - 9:40 amYQT  Thunder Bay-SEA Seattle/Tacoma Intl
17h 20m2 stops Winnipeg Calgary
$456WestJet
Sun, Sep 27 - Sun, Oct 4
WestJet Logo
10:30 am - 6:45 pmSEA  Seattle/Tacoma Intl-YQT Thunder Bay
29h 15m2 stops Calgary Winnipeg
WestJet Logo
7:50 pm - 6:45 pmYQT  Thunder Bay-SEA Seattle/Tacoma Intl
25h 55m1 stop Calgary
$462WestJet
Sun, Sep 27 - Sun, Oct 4
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
$473WestJet
Sun, Sep 27 - Sun, Oct 4
Multiple Airlines Logo
9:45 pm - 6:45 pmSEA  Seattle/Tacoma Intl-YQT Thunder Bay
42h 00m2 stops Las Vegas Harry Reid Intl Winnipeg
Multiple Airlines Logo
7:50 pm - 9:40 amYQT  Thunder Bay-SEA Seattle/Tacoma Intl
16h 50m1 stop Calgary
$521Multiple Airlines
Sun, Sep 13 - Sun, Sep 20
Multiple Airlines Logo
10:30 am - 6:45 pmSEA  Seattle/Tacoma Intl-YQT Thunder Bay
29h 15m3 stops Calgary Edmonton Winnipeg
Multiple Airlines Logo
10:10 am - 6:45 pmYQT  Thunder Bay-SEA Seattle/Tacoma Intl
35h 35m2 stops Toronto Pearson Intl Calgary
$538Multiple Airlines
Sun, Sep 27 - Sun, Oct 4
WestJet Logo
10:30 am - 6:45 pmSEA  Seattle/Tacoma Intl-YQT Thunder Bay
29h 15m3 stops Calgary Edmonton Winnipeg
WestJet Logo
7:20 pm - 9:40 amYQT  Thunder Bay-SEA Seattle/Tacoma Intl
17h 20m3 stops Winnipeg Edmonton Calgary
$552WestJet
Sun, Sep 27 - Sun, Oct 4
WestJet Logo
7:35 pm - 6:45 pmSEA  Seattle/Tacoma Intl-YQT Thunder Bay
20h 10m3 stops Calgary Saskatoon Winnipeg
WestJet Logo
7:20 pm - 9:40 amYQT  Thunder Bay-SEA Seattle/Tacoma Intl
17h 20m2 stops Winnipeg Calgary
$556WestJet
Sun, Sep 13 - Sun, Sep 20
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
$569WestJet
Wed, Sep 30 - Sat, Oct 3
Multiple Airlines Logo
8:30 am - 7:00 pmSEA  Seattle/Tacoma Intl-YQT Thunder Bay
7h 30m1 stop Calgary
Multiple Airlines Logo
7:50 pm - 9:40 amYQT  Thunder Bay-SEA Seattle/Tacoma Intl
16h 50m1 stop Calgary
$628Multiple Airlines
Sun, Sep 13 - Sun, Sep 20
Air Canada Logo
5:50 am - 10:48 pmSEA  Seattle/Tacoma Intl-YQT Thunder Bay
13h 58m2 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
$809Air Canada
Wed, Sep 30 - Sat, Oct 3

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WestJet flights from Seattle to Thunder Bay

Our best WestJet deals on Seattle to Thunder Bay flight tickets
WestJet
Sep 27
SEA10:30 amSeattle/Tacoma Intl
29h 15m
2 stops
YQT6:45 pmThunder Bay
Oct 4
YQT7:20 pmThunder Bay
17h 20m
2 stops
SEA9:40 amSeattle/Tacoma Intl
$456
WestJet
Sep 27
SEA10:30 amSeattle/Tacoma Intl
29h 15m
2 stops
YQT6:45 pmThunder Bay
Oct 4
YQT7:50 pmThunder Bay
25h 55m
1 stop
SEA6:45 pmSeattle/Tacoma Intl
$462
WestJet
Sep 27
SEA7:35 pmSeattle/Tacoma Intl
20h 25m
1 stop
YQT7:00 pmThunder Bay
Oct 4
YQT7:50 pmThunder Bay
25h 55m
1 stop
SEA6:45 pmSeattle/Tacoma Intl
$473

Air Canada flights from Seattle to Thunder Bay

Our best Air Canada deals on Seattle to Thunder Bay flight tickets
Air Canada
Sep 30
SEA5:50 amSeattle/Tacoma Intl
13h 58m
2 stops
YQT10:48 pmThunder Bay
Oct 3
YQT5:15 amThunder Bay
12h 07m
2 stops
SEA2:22 pmSeattle/Tacoma Intl
$809
Air Canada
Sep 30
SEA8:00 amSeattle/Tacoma Intl
11h 48m
1 stop
YQT10:48 pmThunder Bay
Oct 3
YQT11:45 amThunder Bay
12h 19m
1 stop
SEA9:04 pmSeattle/Tacoma Intl
$847

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 17, 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

Sun 9/27

10:30 am-6:45 pm

2 stops29h 15m

Thunder Bay

Sun 10/4

7:20 pm-9:40 am

2 stops17h 20m

$456

SeattleThunder Bay

SEA Seattle/Tacoma Intl - YQT Thunder Bay

SEAYQT

Seattle/Tacoma Intl

Sun 9/27

10:30 am-6:45 pm

2 stops29h 15m

Thunder Bay

Sun 10/4

7:50 pm-6:45 pm

1 stop25h 55m

$462

SeattleThunder Bay

SEA Seattle/Tacoma Intl - YQT Thunder Bay

SEAYQT

Seattle/Tacoma Intl

Sun 9/27

7:35 pm-7:00 pm

1 stop20h 25m

Thunder Bay

Sun 10/4

7:50 pm-6:45 pm

1 stop25h 55m

$473

SeattleThunder Bay

SEA Seattle/Tacoma Intl - YQT Thunder Bay

SEAYQT

Seattle/Tacoma Intl

Sun 9/13

9:45 pm-6:45 pm

2 stops42h 00m

Thunder Bay

Sun 9/20

7:50 pm-9:40 am

1 stop16h 50m

$521

SeattleThunder Bay

SEA Seattle/Tacoma Intl - YQT Thunder Bay

SEAYQT

Seattle/Tacoma Intl

Sun 9/27

10:30 am-6:45 pm

3 stops29h 15m

Thunder Bay

Sun 10/4

10:10 am-6:45 pm

2 stops35h 35m

$538

SeattleThunder Bay

SEA Seattle/Tacoma Intl - YQT Thunder Bay

SEAYQT

Seattle/Tacoma Intl

Sun 9/27

10:30 am-6:45 pm

3 stops29h 15m

Thunder Bay

Sun 10/4

7:20 pm-9:40 am

3 stops17h 20m

$552

SeattleThunder Bay

SEA Seattle/Tacoma Intl - YQT Thunder Bay

SEAYQT

Seattle/Tacoma Intl

Sun 9/13

7:35 pm-6:45 pm

3 stops20h 10m

Thunder Bay

Sun 9/20

7:20 pm-9:40 am

2 stops17h 20m

$556

SeattleThunder Bay

SEA Seattle/Tacoma Intl - YQT Thunder Bay

SEAYQT

Seattle/Tacoma Intl

Wed 9/30

7:35 pm-7:00 pm

1 stop20h 25m

Thunder Bay

Sat 10/3

7:20 pm-9:40 am

2 stops17h 20m

$569
Quickest round-trip

SeattleThunder Bay

SEA Seattle/Tacoma Intl - YQT Thunder Bay

SEAYQT

Seattle/Tacoma Intl

Sun 9/13

8:30 am-7:00 pm

1 stop7h 30m

Thunder Bay

Sun 9/20

7:50 pm-9:40 am

1 stop16h 50m

$628

SeattleThunder Bay

SEA Seattle/Tacoma Intl - YQT Thunder Bay

SEAYQT

Seattle/Tacoma Intl

Wed 9/30

5:50 am-10:48 pm

2 stops13h 58m

Thunder Bay

Sat 10/3

5:15 am-2:22 pm

2 stops12h 07m

$809

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 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

Best Price Found

$271

Fastest flight time

12h 48m

Direct flights

None
The best one-way flight to Thunder Bay from Seattle in the past 72 hours is $271. The best round-trip flight deal from Seattle to Thunder Bay found on momondo in the last 72 hours is $456.
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.
Search flight deals

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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