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Cheap flights from Seattle to Thunder Bay from $650

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 4/4. 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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Cheap round-trip flights

Enter your travel dates to find the best prices.
Air Canada Logo
5:50 am - 10:59 pm
SEA
-
YQT
14h 09m
2 stops
Air Canada Logo
5:00 am - 3:05 pm
YQT
-
SEA
13h 05m
2 stops
$650Air Canada
Sat, Apr 4 - Sat, Apr 11
Multiple Airlines Logo
3:20 pm - 3:11 pm
SEA
-
YQT
20h 51m
2 stops
Multiple Airlines Logo
11:50 am - 10:25 am
YQT
-
SEA
25h 35m
3 stops
$1,000Multiple Airlines
Sat, Apr 4 - Sat, Apr 11

Air Canada flights from Seattle to Thunder Bay

Our best Air Canada deals on Seattle to Thunder Bay flight tickets
Air Canada
Apr 4
SEA8:00 amSeattle/Tacoma Intl
11h 59m
1 stop
YQT10:59 pmThunder Bay
Apr 11
YQT5:00 amThunder Bay
13h 05m
2 stops
SEA3:05 pmSeattle/Tacoma Intl
$650
Air Canada
Feb 28
SEA8:00 amSeattle/Tacoma Intl
12h 05m
1 stop
YQT11:05 pmThunder Bay
Mar 3
YQT7:35 pmThunder Bay
17h 00m
2 stops
SEA9:35 amSeattle/Tacoma Intl
$949
Air Canada
Feb 28
SEA8:00 amSeattle/Tacoma Intl
12h 05m
1 stop
YQT11:05 pmThunder Bay
Mar 3
YQT11:15 amThunder Bay
14h 01m
1 stop
SEA10:16 pmSeattle/Tacoma Intl
$997

United Airlines flights from Seattle to Thunder Bay

Our best United Airlines deals on Seattle to Thunder Bay flight tickets
United Airlines
Feb 28
SEA11:59 pmSeattle/Tacoma Intl
20h 51m
2 stops
YQT11:50 pmThunder Bay
Mar 3
YQT11:15 amThunder Bay
12h 41m
2 stops
SEA8:56 pmSeattle/Tacoma Intl
$973
United Airlines
Feb 28
SEA5:00 amSeattle/Tacoma Intl
15h 05m
2 stops
YQT11:05 pmThunder Bay
Mar 3
YQT5:00 amThunder Bay
16h 03m
3 stops
SEA6:03 pmSeattle/Tacoma Intl
$1,037
United Airlines
Feb 20
SEA7:00 amSeattle/Tacoma Intl
13h 05m
2 stops
YQT11:05 pmThunder Bay
Feb 24
YQT5:00 amThunder Bay
16h 03m
3 stops
SEA6:03 pmSeattle/Tacoma Intl
$1,309

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 19, 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

Sat 4/4

5:50 am-10:59 pm

2 stops14h 09m

Thunder Bay

Sat 4/11

5:00 am-3:05 pm

2 stops13h 05m

$650

SeattleThunder Bay

SEA - YQT

SEAYQT

Seattle/Tacoma Intl

Sat 4/4

3:20 pm-3:11 pm

2 stops20h 51m

Thunder Bay

Sat 4/11

11:50 am-10:25 am

3 stops25h 35m

$1,000

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

11h 59m

Direct flights

None
The fastest flight from Seattle to Thunder Bay takes 11h 59m
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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  • 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 11h 59m 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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