When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Duluth Intl Airport?

Prices for flights from Seattle/Tacoma Intl Airport to Duluth Intl Airport refresh daily.

How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Duluth Intl Airport?

There are 2 operators available for flights from Seattle/Tacoma Intl Airport to Duluth Intl Airport as of December 2025.

How old do you have to be to fly from Seattle/Tacoma Intl Airport to Duluth Intl Airport?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Seattle/Tacoma Intl Airport to Duluth Intl Airport.

What documentation or ID do you need to fly to Duluth Intl Airport?

The necessary travel and health documents for your Duluth Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$118 Cheap Flights from Seattle to Duluth in 2025/26

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Find the cheapest flights from Seattle to Duluth

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Cheap round-trip flights

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3:35 pm - 11:52 pm

SEA

DLH

6h 17m1 stop

8:00 am - 2:45 pm

DLH

SEA

8h 45m1 stop

$258Delta

Tue, Jan 6 - Sat, Jan 10

11:15 pm - 3:44 pm

SEA

DLH

14h 29m2 stops

8:00 am - 2:45 pm

DLH

SEA

8h 45m1 stop

$305Delta

Tue, Jan 6 - Sat, Jan 10

5:55 pm - 11:16 am

SEA

DLH

15h 21m2 stops

5:00 am - 6:55 pm

DLH

SEA

15h 55m2 stops

$365Delta

Tue, Jan 6 - Sat, Jan 10

2:10 pm - 2:30 pm

SEA

DLH

22h 20m1 stop

3:05 pm - 9:55 am

DLH

SEA

20h 50m2 stops

$432United Airlines

Tue, Jan 6 - Sat, Jan 10

3:30 pm - 9:59 pm

SEA

DLH

28h 29m2 stops

3:05 pm - 9:55 am

DLH

SEA

20h 50m2 stops

$438United Airlines

Tue, Jan 6 - Sat, Jan 10

12:00 pm - 7:35 pm

SEA

DLH

5h 35m1 stop

4:24 pm - 8:46 pm

DLH

SEA

6h 22m1 stop

$447Delta

Wed, Feb 4 - Sun, Feb 8

2:10 pm - 9:59 pm

SEA

DLH

29h 49m1 stop

3:05 pm - 11:32 am

DLH

SEA

22h 27m1 stop

$463United Airlines

Tue, Jan 6 - Sat, Jan 10

10:58 am - 9:59 pm

SEA

DLH

9h 01m1 stop

7:40 am - 8:57 pm

DLH

SEA

15h 17m2 stops

$498United Airlines

Wed, Feb 4 - Sun, Feb 8

8:20 am - 9:59 pm

SEA

DLH

11h 39m2 stops

7:40 am - 8:57 pm

DLH

SEA

15h 17m2 stops

$513United Airlines

Wed, Feb 4 - Sun, Feb 8

11:59 pm - 10:43 am

SEA

DLH

8h 44m1 stop

11:20 am - 7:03 pm

DLH

SEA

9h 43m1 stop

$662United Airlines

Fri, Mar 20 - Sat, Mar 28

Delta flights from Seattle to Duluth

Our best Delta deals on Seattle to Duluth flight tickets

Delta

Feb 4

SEA12:00 pmSeattle/Tacoma Intl

5h 35m

1 stop

DLH7:35 pmDuluth Intl

Feb 8

DLH4:24 pmDuluth Intl

6h 22m

1 stop

SEA8:46 pmSeattle/Tacoma Intl

$447

Find similar

Delta

Jan 2

SEA6:10 amSeattle/Tacoma Intl

7h 20m

1 stop

DLH3:30 pmDuluth Intl

Jan 9

DLH4:24 pmDuluth Intl

6h 22m

1 stop

SEA8:46 pmSeattle/Tacoma Intl

$487

Find similar

Delta

Dec 8

SEA1:45 pmSeattle/Tacoma Intl

8h 14m

1 stop

DLH11:59 pmDuluth Intl

Dec 15

DLH5:00 amDuluth Intl

7h 54m

1 stop

SEA10:54 amSeattle/Tacoma Intl

$503

Find similar

United Airlines flights from Seattle to Duluth

Our best United Airlines deals on Seattle to Duluth flight tickets

United Airlines

Jan 27

SEA10:58 amSeattle/Tacoma Intl

9h 01m

1 stop

DLH9:59 pmDuluth Intl

Jan 31

DLH7:40 amDuluth Intl

15h 32m

3 stops

SEA9:12 pmSeattle/Tacoma Intl

$413

Find similar

United Airlines

Jan 28

SEA10:58 amSeattle/Tacoma Intl

9h 01m

1 stop

DLH9:59 pmDuluth Intl

Jan 30

DLH3:05 pmDuluth Intl

9h 38m

1 stop

SEA10:43 pmSeattle/Tacoma Intl

$417

Find similar

United Airlines

Jan 27

SEA9:00 amSeattle/Tacoma Intl

10h 59m

2 stops

DLH9:59 pmDuluth Intl

Jan 31

DLH7:40 amDuluth Intl

15h 32m

3 stops

SEA9:12 pmSeattle/Tacoma Intl

$418

Find similar

Fly from

Fly to

Route

Depart

Return

Price

SeattleDuluth

SEA - DLH

SEADLH

Seattle/Tacoma Intl

Tue 1/6

3:35 pm-11:52 pm

1 stop6h 17m

Duluth Intl

Sat 1/10

8:00 am-2:45 pm

1 stop8h 45m

$258

SeattleDuluth

SEA - DLH

SEADLH

Seattle/Tacoma Intl

Tue 1/6

11:15 pm-3:44 pm

2 stops14h 29m

Duluth Intl

Sat 1/10

8:00 am-2:45 pm

1 stop8h 45m

$305

SeattleDuluth

SEA - DLH

SEADLH

Seattle/Tacoma Intl

Tue 1/6

5:55 pm-11:16 am

2 stops15h 21m

Duluth Intl

Sat 1/10

5:00 am-6:55 pm

2 stops15h 55m

$365

SeattleDuluth

SEA - DLH

SEADLH

Seattle/Tacoma Intl

Tue 1/6

2:10 pm-2:30 pm

1 stop22h 20m

Duluth Intl

Sat 1/10

3:05 pm-9:55 am

2 stops20h 50m

$432

SeattleDuluth

SEA - DLH

SEADLH

Seattle/Tacoma Intl

Tue 1/6

3:30 pm-9:59 pm

2 stops28h 29m

Duluth Intl

Sat 1/10

3:05 pm-9:55 am

2 stops20h 50m

$438

SeattleDuluth

SEA - DLH

SEADLH

Seattle/Tacoma Intl

Wed 2/4

12:00 pm-7:35 pm

1 stop5h 35m

Duluth Intl

Sun 2/8

4:24 pm-8:46 pm

1 stop6h 22m

$447

SeattleDuluth

SEA - DLH

SEADLH

Seattle/Tacoma Intl

Tue 1/6

2:10 pm-9:59 pm

1 stop29h 49m

Duluth Intl

Sat 1/10

3:05 pm-11:32 am

1 stop22h 27m

$463

SeattleDuluth

SEA - DLH

SEADLH

Seattle/Tacoma Intl

Wed 2/4

10:58 am-9:59 pm

1 stop9h 01m

Duluth Intl

Sun 2/8

7:40 am-8:57 pm

2 stops15h 17m

$498

SeattleDuluth

SEA - DLH

SEADLH

Seattle/Tacoma Intl

Wed 2/4

8:20 am-9:59 pm

2 stops11h 39m

Duluth Intl

Sun 2/8

7:40 am-8:57 pm

2 stops15h 17m

$513

SeattleDuluth

SEA - DLH

SEADLH

Seattle/Tacoma Intl

Fri 3/20

11:59 pm-10:43 am

1 stop8h 44m

Duluth Intl

Sat 3/28

11:20 am-7:03 pm

1 stop9h 43m

$662

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 15 resultsSorted by cheapest first

How to get the cheapest flight ticket from Seattle to Duluth

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 month to fly to Duluth?

The cheapest month to fly to Duluth from Seattle is in March. Flight prices, which tend to average around $295, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of March, then book flights to Duluth from Seattle during January instead. Flights to Duluth in January, while not as cheap as those in March, still average around $308.

What is the cheapest day to depart on your flight to Duluth?

The cheapest day to depart from Seattle to Duluth is on a Wednesday when prices can be found for as low as $438. On the other hand, Friday is the most expensive day to depart from Seattle because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $698.

What is the cheapest time of day to depart on your flight to Duluth?

Flying to Duluth from Seattle in the morning is the least expensive time of day to depart. momondo users have found prices as low as $428 when looking at flights departing in the morning. In contrast, the most expensive time of day to depart to Duluth is at noon when prices are around $677.

When to book flights from Seattle to Duluth

Are you open to changing your travel dates? Check out the ideal times to fly from Seattle to Duluth according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Seattle to Duluth (SEA to DLH) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to Duluth

Fastest flight time	5h 35m
Direct flights	None

The fastest flight from Seattle to Duluth takes 5h 35m

There are no direct flights from Seattle to Duluth. There are no popular flight routes from Seattle to Duluth.

Search flight deals

How far is Seattle/Tacoma Intl to Duluth Intl by plane?
A flight from Seattle/Tacoma Intl to Duluth Intl will travel around 1410.5 mi. 5h 35m is a normal flight duration for this route.
When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Duluth Intl Airport?
Prices for flights from Seattle/Tacoma Intl Airport to Duluth Intl Airport refresh daily.
How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Duluth Intl Airport?
There are 2 operators available for flights from Seattle/Tacoma Intl Airport to Duluth Intl Airport as of December 2025.
How old do you have to be to fly from Seattle/Tacoma Intl Airport to Duluth Intl Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Seattle/Tacoma Intl Airport to Duluth Intl Airport.
What documentation or ID do you need to fly to Duluth Intl Airport?
The necessary travel and health documents for your Duluth Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from Seattle to Duluth?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Seattle to Duluth is Delta (81% of total bookings). The next most popular airline is United Airlines (19%).

Best airlines flying from Seattle to Duluth

Compare and see reviews for airlines that fly from Seattle to Duluth with momondo

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $258	Free Cancellation	Rating 7.9 8,010 reviews		Search Delta flights
United Airlines	PriceFrom $301	Free Cancellation	Rating 7.4 9,063 reviews		Search United Airlines flights

Two Harbors

Hayward

Superior

Cloquet

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Why should I use momondo to find a flight deal from Seattle to Duluth?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Seattle to Duluth. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Seattle to Duluth with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Seattle to Duluth flights to just show those with flexible booking policies.

How can momondo help me find flights from Seattle to Duluth?

Once all potential Seattle to Duluth 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 Duluth right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Seattle to Duluth flights. All you need is a valid email address and we will do the rest; it is that quick and easy.