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Cheap flights from Seattle to Thunder Bay from $274

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 9/21. 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

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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 pm
SEA
-
YQT
20h 25m
1 stop
WestJet Logo
7:50 pm - 9:40 am
YQT
-
SEA
16h 50m
1 stop
$417WestJet
Wed, Sep 23 - Sun, Sep 27
WestJet Logo
7:00 am - 7:00 pm
SEA
-
YQT
9h 00m
1 stop
WestJet Logo
7:50 pm - 9:00 pm
YQT
-
SEA
28h 10m
1 stop
$495WestJet
Fri, Jul 17 - Fri, Jul 24
Multiple Airlines Logo
7:35 pm - 7:00 pm
SEA
-
YQT
20h 25m
1 stop
Multiple Airlines Logo
10:10 am - 6:45 pm
YQT
-
SEA
35h 35m
2 stops
$514Multiple Airlines
Wed, Sep 23 - Sun, Sep 27
WestJet Logo
7:00 am - 7:00 pm
SEA
-
YQT
9h 00m
1 stop
WestJet Logo
7:50 pm - 9:40 am
YQT
-
SEA
16h 50m
1 stop
$564WestJet
Tue, Aug 25 - Sat, Aug 29
Multiple Airlines Logo
7:35 pm - 7:00 pm
SEA
-
YQT
20h 25m
1 stop
Multiple Airlines Logo
10:10 am - 6:45 pm
YQT
-
SEA
35h 35m
3 stops
$572Multiple Airlines
Wed, Sep 23 - Sun, Sep 27
Multiple Airlines Logo
11:00 pm - 6:28 pm
SEA
-
YQT
16h 28m
2 stops
Multiple Airlines Logo
7:50 pm - 9:40 am
YQT
-
SEA
16h 50m
1 stop
$578Multiple Airlines
Sun, Jul 5 - Tue, Jul 7
WestJet Logo
7:00 am - 7:00 pm
SEA
-
YQT
9h 00m
1 stop
WestJet Logo
7:50 pm - 9:40 am
YQT
-
SEA
16h 50m
1 stop
$585WestJet
Tue, Aug 25 - Sat, Aug 29
WestJet Logo
7:00 am - 6:45 pm
SEA
-
YQT
8h 45m
2 stops
WestJet Logo
7:50 pm - 9:00 pm
YQT
-
SEA
28h 10m
1 stop
$591WestJet
Sun, Jul 5 - Tue, Jul 7
WestJet Logo
7:00 am - 10:25 am
SEA
-
YQT
24h 25m
2 stops
WestJet Logo
7:50 pm - 6:45 pm
YQT
-
SEA
25h 55m
1 stop
$624WestJet
Tue, Aug 25 - Sat, Aug 29
Multiple Airlines Logo
9:54 pm - 7:00 pm
SEA
-
YQT
18h 06m
3 stops
Multiple Airlines Logo
10:10 am - 6:45 pm
YQT
-
SEA
35h 35m
2 stops
$634Multiple Airlines
Wed, Sep 23 - Sun, Sep 27

Air Canada flights from Seattle to Thunder Bay

Our best Air Canada deals on Seattle to Thunder Bay flight tickets
Air Canada
Aug 25
SEA7:20 pmSeattle/Tacoma Intl
11h 54m
2 stops
YQT10:14 amThunder Bay
Aug 29
YQT5:10 amThunder Bay
16h 22m
2 stops
SEA6:32 pmSeattle/Tacoma Intl
$654
Air Canada
Aug 25
SEA8:00 amSeattle/Tacoma Intl
12h 29m
1 stop
YQT11:29 pmThunder Bay
Aug 29
YQT5:10 amThunder Bay
18h 57m
1 stop
SEA9:07 pmSeattle/Tacoma Intl
$674
Air Canada
Oct 20
SEA8:00 amSeattle/Tacoma Intl
11h 48m
1 stop
YQT10:48 pmThunder Bay
Oct 22
YQT11:45 amThunder Bay
12h 19m
1 stop
SEA9:04 pmSeattle/Tacoma Intl
$751

WestJet flights from Seattle to Thunder Bay

Our best WestJet deals on Seattle to Thunder Bay flight tickets
WestJet
Sep 23
SEA7:35 pmSeattle/Tacoma Intl
20h 25m
1 stop
YQT7:00 pmThunder Bay
Sep 27
YQT7:50 pmThunder Bay
16h 50m
1 stop
SEA9:40 amSeattle/Tacoma Intl
$417
WestJet
Jul 17
SEA7:00 amSeattle/Tacoma Intl
9h 00m
1 stop
YQT7:00 pmThunder Bay
Jul 24
YQT7:50 pmThunder Bay
28h 10m
1 stop
SEA9:00 pmSeattle/Tacoma Intl
$495
WestJet
Aug 25
SEA7:00 amSeattle/Tacoma Intl
9h 00m
1 stop
YQT7:00 pmThunder Bay
Aug 29
YQT7:50 pmThunder Bay
16h 50m
1 stop
SEA9:40 amSeattle/Tacoma Intl
$564

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 June 5, 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 9/23

7:35 pm-7:00 pm

1 stop20h 25m

Thunder Bay

Sun 9/27

7:50 pm-9:40 am

1 stop16h 50m

$417

SeattleThunder Bay

SEA - YQT

SEAYQT

Seattle/Tacoma Intl

Fri 7/17

7:00 am-7:00 pm

1 stop9h 00m

Thunder Bay

Fri 7/24

7:50 pm-9:00 pm

1 stop28h 10m

$495

SeattleThunder Bay

SEA - YQT

SEAYQT

Seattle/Tacoma Intl

Wed 9/23

7:35 pm-7:00 pm

1 stop20h 25m

Thunder Bay

Sun 9/27

10:10 am-6:45 pm

2 stops35h 35m

$514
Quickest round-trip

SeattleThunder Bay

SEA - YQT

SEAYQT

Seattle/Tacoma Intl

Tue 8/25

7:00 am-7:00 pm

1 stop9h 00m

Thunder Bay

Sat 8/29

7:50 pm-9:40 am

1 stop16h 50m

$564

SeattleThunder Bay

SEA - YQT

SEAYQT

Seattle/Tacoma Intl

Wed 9/23

7:35 pm-7:00 pm

1 stop20h 25m

Thunder Bay

Sun 9/27

10:10 am-6:45 pm

3 stops35h 35m

$572

SeattleThunder Bay

SEA - YQT

SEAYQT

Seattle/Tacoma Intl

Sun 7/5

11:00 pm-6:28 pm

2 stops16h 28m

Thunder Bay

Tue 7/7

7:50 pm-9:40 am

1 stop16h 50m

$578

SeattleThunder Bay

SEA - YQT

SEAYQT

Seattle/Tacoma Intl

Tue 8/25

7:00 am-7:00 pm

1 stop9h 00m

Thunder Bay

Sat 8/29

7:50 pm-9:40 am

1 stop16h 50m

$585

SeattleThunder Bay

SEA - YQT

SEAYQT

Seattle/Tacoma Intl

Sun 7/5

7:00 am-6:45 pm

2 stops8h 45m

Thunder Bay

Tue 7/7

7:50 pm-9:00 pm

1 stop28h 10m

$591

SeattleThunder Bay

SEA - YQT

SEAYQT

Seattle/Tacoma Intl

Tue 8/25

7:00 am-10:25 am

2 stops24h 25m

Thunder Bay

Sat 8/29

7:50 pm-6:45 pm

1 stop25h 55m

$624

SeattleThunder Bay

SEA - YQT

SEAYQT

Seattle/Tacoma Intl

Wed 9/23

9:54 pm-7:00 pm

3 stops18h 06m

Thunder Bay

Sun 9/27

10:10 am-6:45 pm

2 stops35h 35m

$634

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 16 resultsSorted by cheapest first
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See travel insights to Thunder Bay from

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 49% 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

16h 28m

Direct flights

None
The fastest flight from Seattle to Thunder Bay takes 16h 28m
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 16h 28m 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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