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Cheap flights from Seattle to Thunder Bay from $581

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Thunder Bay departing on 3/22. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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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.
Air Canada Logo
8:00 am - 11:50 pm
SEA
-
YQT
12h 50m
1 stop
Air Canada Logo
5:00 am - 3:03 pm
YQT
-
SEA
13h 03m
2 stops
$581Air Canada
Sun, Mar 22 - Sun, Mar 29
Multiple Airlines Logo
7:55 am - 9:24 pm
SEA
-
YQT
10h 29m
1 stop
Multiple Airlines Logo
6:20 am - 7:15 pm
YQT
-
SEA
15h 55m
1 stop
$594Multiple Airlines
Thu, Mar 19 - Thu, Mar 26
Multiple Airlines Logo
7:55 am - 9:25 pm
SEA
-
YQT
34h 30m
2 stops
Multiple Airlines Logo
6:20 am - 7:15 pm
YQT
-
SEA
15h 55m
1 stop
$598Multiple Airlines
Thu, Mar 19 - Thu, Mar 26
Multiple Airlines Logo
8:25 am - 9:24 pm
SEA
-
YQT
9h 59m
2 stops
Multiple Airlines Logo
6:20 am - 7:03 pm
YQT
-
SEA
15h 43m
2 stops
$651Multiple Airlines
Thu, Mar 19 - Thu, Mar 26
Air Canada Logo
8:00 am - 11:50 pm
SEA
-
YQT
12h 50m
1 stop
Air Canada Logo
5:00 am - 3:01 pm
YQT
-
SEA
13h 01m
2 stops
$661Air Canada
Fri, Mar 20 - Fri, Mar 27
Air Canada Logo
5:50 am - 11:05 pm
SEA
-
YQT
14h 15m
2 stops
Air Canada Logo
11:15 am - 7:22 pm
YQT
-
SEA
11h 07m
2 stops
$672Air Canada
Fri, Feb 20 - Tue, Feb 24
Multiple Airlines Logo
11:55 am - 10:21 am
SEA
-
YQT
19h 26m
3 stops
Multiple Airlines Logo
6:20 am - 2:19 pm
YQT
-
SEA
34h 59m
2 stops
$679Multiple Airlines
Sun, Mar 22 - Sun, Mar 29
Air Canada Logo
8:00 am - 11:50 pm
SEA
-
YQT
12h 50m
1 stop
Air Canada Logo
11:15 am - 10:16 pm
YQT
-
SEA
14h 01m
1 stop
$680Air Canada
Fri, Mar 20 - Fri, Mar 27
Multiple Airlines Logo
11:55 am - 10:21 am
SEA
-
YQT
19h 26m
3 stops
Multiple Airlines Logo
6:20 am - 2:19 pm
YQT
-
SEA
34h 59m
3 stops
$683Multiple Airlines
Sun, Mar 22 - Sun, Mar 29
Air Canada Logo
8:00 am - 11:05 pm
SEA
-
YQT
12h 05m
1 stop
Air Canada Logo
5:00 am - 2:31 pm
YQT
-
SEA
12h 31m
2 stops
$692Air Canada
Fri, Feb 20 - Tue, Feb 24

Air Canada flights from Seattle to Thunder Bay

Our best Air Canada deals on Seattle to Thunder Bay flight tickets
Air Canada
Mar 22
SEA8:00 amSeattle/Tacoma Intl
12h 50m
1 stop
YQT11:50 pmThunder Bay
Mar 29
YQT5:00 amThunder Bay
13h 03m
2 stops
SEA3:03 pmSeattle/Tacoma Intl
$581
Air Canada
Mar 20
SEA8:00 amSeattle/Tacoma Intl
12h 50m
1 stop
YQT11:50 pmThunder Bay
Mar 27
YQT5:00 amThunder Bay
13h 01m
2 stops
SEA3:01 pmSeattle/Tacoma Intl
$661
Air Canada
Feb 20
SEA5:50 amSeattle/Tacoma Intl
14h 15m
2 stops
YQT11:05 pmThunder Bay
Feb 24
YQT11:15 amThunder Bay
11h 07m
2 stops
SEA7:22 pmSeattle/Tacoma Intl
$672

United Airlines flights from Seattle to Thunder Bay

Our best United Airlines deals on Seattle to Thunder Bay flight tickets
United Airlines
Feb 20
SEA12:32 pmSeattle/Tacoma Intl
27h 03m
3 stops
YQT6:35 pmThunder Bay
Feb 24
YQT7:25 pmThunder Bay
29h 48m
2 stops
SEA10:13 pmSeattle/Tacoma Intl
$731
United Airlines
Mar 22
SEA5:00 amSeattle/Tacoma Intl
15h 50m
2 stops
YQT11:50 pmThunder Bay
Mar 29
YQT5:00 amThunder Bay
20h 56m
2 stops
SEA10:56 pmSeattle/Tacoma Intl
$787
United Airlines
Feb 20
SEA12:32 pmSeattle/Tacoma Intl
27h 03m
3 stops
YQT6:35 pmThunder Bay
Feb 24
YQT5:00 amThunder Bay
40h 26m
3 stops
SEA6:26 pmSeattle/Tacoma Intl
$811

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 February 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

SeattleThunder Bay

SEA - YQT

SEAYQT

Seattle/Tacoma Intl

Sun 3/22

8:00 am-11:50 pm

1 stop12h 50m

Thunder Bay

Sun 3/29

5:00 am-3:03 pm

2 stops13h 03m

$581

SeattleThunder Bay

SEA - YQT

SEAYQT

Seattle/Tacoma Intl

Thu 3/19

7:55 am-9:24 pm

1 stop10h 29m

Thunder Bay

Thu 3/26

6:20 am-7:15 pm

1 stop15h 55m

$594

SeattleThunder Bay

SEA - YQT

SEAYQT

Seattle/Tacoma Intl

Thu 3/19

7:55 am-9:25 pm

2 stops34h 30m

Thunder Bay

Thu 3/26

6:20 am-7:15 pm

1 stop15h 55m

$598

SeattleThunder Bay

SEA - YQT

SEAYQT

Seattle/Tacoma Intl

Thu 3/19

8:25 am-9:24 pm

2 stops9h 59m

Thunder Bay

Thu 3/26

6:20 am-7:03 pm

2 stops15h 43m

$651

SeattleThunder Bay

SEA - YQT

SEAYQT

Seattle/Tacoma Intl

Fri 3/20

8:00 am-11:50 pm

1 stop12h 50m

Thunder Bay

Fri 3/27

5:00 am-3:01 pm

2 stops13h 01m

$661

SeattleThunder Bay

SEA - YQT

SEAYQT

Seattle/Tacoma Intl

Fri 2/20

5:50 am-11:05 pm

2 stops14h 15m

Thunder Bay

Tue 2/24

11:15 am-7:22 pm

2 stops11h 07m

$672

SeattleThunder Bay

SEA - YQT

SEAYQT

Seattle/Tacoma Intl

Sun 3/22

11:55 am-10:21 am

3 stops19h 26m

Thunder Bay

Sun 3/29

6:20 am-2:19 pm

2 stops34h 59m

$679

SeattleThunder Bay

SEA - YQT

SEAYQT

Seattle/Tacoma Intl

Fri 3/20

8:00 am-11:50 pm

1 stop12h 50m

Thunder Bay

Fri 3/27

11:15 am-10:16 pm

1 stop14h 01m

$680

SeattleThunder Bay

SEA - YQT

SEAYQT

Seattle/Tacoma Intl

Sun 3/22

11:55 am-10:21 am

3 stops19h 26m

Thunder Bay

Sun 3/29

6:20 am-2:19 pm

3 stops34h 59m

$683

SeattleThunder Bay

SEA - YQT

SEAYQT

Seattle/Tacoma Intl

Fri 2/20

8:00 am-11:05 pm

1 stop12h 05m

Thunder Bay

Tue 2/24

5:00 am-2:31 pm

2 stops12h 31m

$692

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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 11m

Direct flights

None
The fastest flight from Seattle to Thunder Bay takes 16h 11m
There are no direct flights from Seattle to Thunder Bay. There are no popular flight routes from Seattle to Thunder Bay.
Search flight deals

  • 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 11m 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.

  • How do I get Price Alerts for flights from Seattle to Thunder Bay?

    Price Alerts will notify you by email when the price for flights to Thunder Bay from Seattle decreases. To activate this, select your desired travel dates and search for offers. While browsing through offers you’ll see the Price Alert widget toggle. Click it to turn on notifications.

  • How can I save money on flights from Seattle to Thunder Bay with momondo?

    By using tools like our “Price Calendar”, you can see the best day to fly round-trip for your travels. Our “Price Forecast” tool uses AI to predict whether you should purchase or hold off on booking for potentially cheaper prices. Explore shows you all flight options from a city or airport to build your own unique adventure. The Discover blog also provides valuable insights for saving money while booking your experience. After searching you can toggle on “Price Alerts” to track prices for your desired flight and book at the ideal moment.

  • How does momondo find its flight prices?

    We compare prices from 700+ competitors to help you find the price that works best for you. momondo operates in over 30 international markets, bringing you access to a wide range of fares and deals. Search for your travel using momondo for a diverse range of options from airlines and OTAs.

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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