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Cheap flights from Seattle to Thunder Bay from $163

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 4/25. 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
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
3:20 pm - 7:00 pm
SEA
-
YQT
24h 40m
1 stop
WestJet Logo
11:00 am - 6:45 pm
YQT
-
SEA
10h 45m
2 stops
$383WestJet
Sat, Apr 25 - Sat, May 2
WestJet Logo
7:35 pm - 7:00 pm
SEA
-
YQT
20h 25m
1 stop
WestJet Logo
7:50 pm - 6:45 pm
YQT
-
SEA
25h 55m
1 stop
$436WestJet
Wed, Apr 29 - Sun, May 3
Multiple Airlines Logo
3:20 pm - 7:00 pm
SEA
-
YQT
24h 40m
1 stop
Multiple Airlines Logo
10:10 am - 7:23 pm
YQT
-
SEA
12h 13m
1 stop
$444Multiple Airlines
Sat, Apr 25 - Sat, May 2
Multiple Airlines Logo
3:10 pm - 8:55 am
SEA
-
YQT
38h 45m
2 stops
Multiple Airlines Logo
7:50 pm - 9:40 am
YQT
-
SEA
16h 50m
1 stop
$446Multiple Airlines
Thu, Apr 23 - Thu, Apr 30
WestJet Logo
7:35 pm - 7:00 pm
SEA
-
YQT
20h 25m
1 stop
WestJet Logo
7:50 pm - 6:45 pm
YQT
-
SEA
25h 55m
1 stop
$475WestJet
Wed, Apr 29 - Sun, May 3
WestJet Logo
3:20 pm - 7:00 pm
SEA
-
YQT
24h 40m
1 stop
WestJet Logo
11:00 am - 9:40 am
YQT
-
SEA
25h 40m
3 stops
$488WestJet
Sat, Apr 25 - Sat, May 2
WestJet Logo
7:35 pm - 7:00 pm
SEA
-
YQT
20h 25m
1 stop
WestJet Logo
11:00 am - 6:45 pm
YQT
-
SEA
10h 45m
2 stops
$502WestJet
Wed, Apr 29 - Sun, May 3
WestJet Logo
7:35 pm - 7:00 pm
SEA
-
YQT
20h 25m
1 stop
WestJet Logo
11:00 am - 6:45 pm
YQT
-
SEA
10h 45m
2 stops
$510WestJet
Wed, Apr 29 - Sun, May 3
WestJet Logo
7:35 pm - 7:00 pm
SEA
-
YQT
20h 25m
1 stop
WestJet Logo
7:50 pm - 6:45 pm
YQT
-
SEA
25h 55m
1 stop
$526WestJet
Wed, Apr 29 - Sun, May 3
Multiple Airlines Logo
7:55 am - 9:30 pm
SEA
-
YQT
10h 35m
1 stop
Multiple Airlines Logo
7:50 pm - 9:40 am
YQT
-
SEA
16h 50m
1 stop
$533Multiple Airlines
Thu, Apr 23 - Thu, Apr 30

WestJet flights from Seattle to Thunder Bay

Our best WestJet deals on Seattle to Thunder Bay flight tickets
WestJet
Apr 25
SEA3:20 pmSeattle/Tacoma Intl
24h 40m
1 stop
YQT7:00 pmThunder Bay
May 2
YQT11:00 amThunder Bay
10h 45m
2 stops
SEA6:45 pmSeattle/Tacoma Intl
$383
WestJet
Apr 29
SEA7:35 pmSeattle/Tacoma Intl
20h 25m
1 stop
YQT7:00 pmThunder Bay
May 3
YQT7:50 pmThunder Bay
25h 55m
1 stop
SEA6:45 pmSeattle/Tacoma Intl
$436
WestJet
Apr 29
SEA7:35 pmSeattle/Tacoma Intl
20h 25m
1 stop
YQT7:00 pmThunder Bay
May 3
YQT7:50 pmThunder Bay
25h 55m
1 stop
SEA6:45 pmSeattle/Tacoma Intl
$475

Air Canada flights from Seattle to Thunder Bay

Our best Air Canada deals on Seattle to Thunder Bay flight tickets
Air Canada
Apr 29
SEA8:00 pmSeattle/Tacoma Intl
11h 05m
2 stops
YQT10:05 amThunder Bay
May 3
YQT5:05 amThunder Bay
12h 15m
2 stops
SEA2:20 pmSeattle/Tacoma Intl
$563
Air Canada
Apr 29
SEA8:00 pmSeattle/Tacoma Intl
11h 05m
2 stops
YQT10:05 amThunder Bay
May 3
YQT5:05 amThunder Bay
12h 15m
2 stops
SEA2:20 pmSeattle/Tacoma Intl
$573
Air Canada
Apr 29
SEA5:40 amSeattle/Tacoma Intl
14h 20m
2 stops
YQT11:00 pmThunder Bay
May 3
YQT6:25 pmThunder Bay
18h 25m
2 stops
SEA9:50 amSeattle/Tacoma Intl
$582

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 March 12, 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

Sat 4/25

3:20 pm-7:00 pm

1 stop24h 40m

Thunder Bay

Sat 5/2

11:00 am-6:45 pm

2 stops10h 45m

$383

SeattleThunder Bay

SEA - YQT

SEAYQT

Seattle/Tacoma Intl

Wed 4/29

7:35 pm-7:00 pm

1 stop20h 25m

Thunder Bay

Sun 5/3

7:50 pm-6:45 pm

1 stop25h 55m

$436

SeattleThunder Bay

SEA - YQT

SEAYQT

Seattle/Tacoma Intl

Sat 4/25

3:20 pm-7:00 pm

1 stop24h 40m

Thunder Bay

Sat 5/2

10:10 am-7:23 pm

1 stop12h 13m

$444

SeattleThunder Bay

SEA - YQT

SEAYQT

Seattle/Tacoma Intl

Thu 4/23

3:10 pm-8:55 am

2 stops38h 45m

Thunder Bay

Thu 4/30

7:50 pm-9:40 am

1 stop16h 50m

$446

SeattleThunder Bay

SEA - YQT

SEAYQT

Seattle/Tacoma Intl

Wed 4/29

7:35 pm-7:00 pm

1 stop20h 25m

Thunder Bay

Sun 5/3

7:50 pm-6:45 pm

1 stop25h 55m

$475

SeattleThunder Bay

SEA - YQT

SEAYQT

Seattle/Tacoma Intl

Sat 4/25

3:20 pm-7:00 pm

1 stop24h 40m

Thunder Bay

Sat 5/2

11:00 am-9:40 am

3 stops25h 40m

$488

SeattleThunder Bay

SEA - YQT

SEAYQT

Seattle/Tacoma Intl

Wed 4/29

7:35 pm-7:00 pm

1 stop20h 25m

Thunder Bay

Sun 5/3

11:00 am-6:45 pm

2 stops10h 45m

$502

SeattleThunder Bay

SEA - YQT

SEAYQT

Seattle/Tacoma Intl

Wed 4/29

7:35 pm-7:00 pm

1 stop20h 25m

Thunder Bay

Sun 5/3

11:00 am-6:45 pm

2 stops10h 45m

$510

SeattleThunder Bay

SEA - YQT

SEAYQT

Seattle/Tacoma Intl

Wed 4/29

7:35 pm-7:00 pm

1 stop20h 25m

Thunder Bay

Sun 5/3

7:50 pm-6:45 pm

1 stop25h 55m

$526
Quickest round-trip

SeattleThunder Bay

SEA - YQT

SEAYQT

Seattle/Tacoma Intl

Thu 4/23

7:55 am-9:30 pm

1 stop10h 35m

Thunder Bay

Thu 4/30

7:50 pm-9:40 am

1 stop16h 50m

$533

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 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

What is the cheapest airline that flies from Seattle/Tacoma Intl to Thunder Bay?

WestJet and Air Canada are the most popular carriers operating from Seattle/Tacoma Intl to Thunder Bay

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

28h 05m

Direct flights

None
The fastest flight from Seattle to Thunder Bay takes 28h 05m
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 28h 05m 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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