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Cheap flights from Seattle to Duluth from $188

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 Duluth departing on 4/7. 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 Duluth

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
11:59 pm - 10:38 am
SEA
-
DLH
8h 39m
1 stop
United Airlines Logo
6:57 pm - 12:34 am
DLH
-
SEA
7h 37m
1 stop
$318United Airlines
Fri, Apr 17 - Mon, Apr 20
United Airlines Logo
11:59 pm - 10:43 am
SEA
-
DLH
8h 44m
1 stop
United Airlines Logo
3:08 pm - 10:37 pm
DLH
-
SEA
9h 29m
1 stop
$323United Airlines
Tue, Mar 24 - Tue, Mar 31
United Airlines Logo
11:35 am - 12:29 am
SEA
-
DLH
10h 54m
2 stops
United Airlines Logo
6:57 pm - 12:34 am
DLH
-
SEA
7h 37m
1 stop
$324United Airlines
Fri, Apr 17 - Mon, Apr 20
United Airlines Logo
11:59 pm - 10:43 am
SEA
-
DLH
8h 44m
1 stop
United Airlines Logo
11:19 am - 11:27 pm
DLH
-
SEA
14h 08m
2 stops
$329United Airlines
Tue, Mar 24 - Tue, Mar 31
United Airlines Logo
10:53 pm - 10:34 am
SEA
-
DLH
9h 41m
1 stop
United Airlines Logo
6:44 pm - 11:59 pm
DLH
-
SEA
7h 15m
1 stop
$349United Airlines
Fri, May 15 - Mon, May 18
United Airlines Logo
11:59 pm - 10:39 am
SEA
-
DLH
8h 40m
1 stop
United Airlines Logo
5:00 am - 2:46 pm
DLH
-
SEA
11h 46m
2 stops
$350United Airlines
Mon, Apr 13 - Sat, Apr 18
United Airlines Logo
11:59 pm - 10:39 am
SEA
-
DLH
8h 40m
1 stop
United Airlines Logo
3:08 pm - 10:42 pm
DLH
-
SEA
9h 34m
1 stop
$378United Airlines
Sat, Apr 18 - Wed, Apr 22
United Airlines Logo
11:59 pm - 10:29 am
SEA
-
DLH
8h 30m
1 stop
United Airlines Logo
11:19 am - 7:00 pm
DLH
-
SEA
9h 41m
1 stop
$379United Airlines
Mon, Mar 30 - Sun, Apr 5
United Airlines Logo
7:37 pm - 10:39 am
SEA
-
DLH
13h 02m
2 stops
United Airlines Logo
3:08 pm - 10:42 pm
DLH
-
SEA
9h 34m
1 stop
$384United Airlines
Sat, Apr 18 - Wed, Apr 22
United Airlines Logo
7:37 pm - 10:39 am
SEA
-
DLH
13h 02m
2 stops
United Airlines Logo
7:25 am - 8:53 pm
DLH
-
SEA
15h 28m
2 stops
$389United Airlines
Sat, Apr 18 - Wed, Apr 22

United Airlines flights from Seattle to Duluth

Our best United Airlines deals on Seattle to Duluth flight tickets
United Airlines
Apr 17
SEA11:59 pmSeattle/Tacoma Intl
8h 39m
1 stop
DLH10:38 amDuluth Intl
Apr 20
DLH6:57 pmDuluth Intl
7h 37m
1 stop
SEA12:34 amSeattle/Tacoma Intl
$318
United Airlines
Mar 24
SEA11:59 pmSeattle/Tacoma Intl
8h 44m
1 stop
DLH10:43 amDuluth Intl
Mar 31
DLH3:08 pmDuluth Intl
9h 29m
1 stop
SEA10:37 pmSeattle/Tacoma Intl
$323
United Airlines
Apr 17
SEA11:35 amSeattle/Tacoma Intl
10h 54m
2 stops
DLH12:29 amDuluth Intl
Apr 20
DLH6:57 pmDuluth Intl
7h 37m
1 stop
SEA12:34 amSeattle/Tacoma Intl
$324

Delta flights from Seattle to Duluth

Our best Delta deals on Seattle to Duluth flight tickets
Delta
Jun 23
SEA1:45 pmSeattle/Tacoma Intl
7h 53m
1 stop
DLH11:38 pmDuluth Intl
Jun 25
DLH4:20 pmDuluth Intl
6h 04m
1 stop
SEA8:24 pmSeattle/Tacoma Intl
$708
Delta
Mar 23
SEA9:00 amSeattle/Tacoma Intl
11h 47m
2 stops
DLH10:47 pmDuluth Intl
Mar 27
DLH12:37 pmDuluth Intl
10h 22m
2 stops
SEA8:59 pmSeattle/Tacoma Intl
$1,645

momondo Fare Finder

 
Customize your flight search to find flights from Seattle to Duluth 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 10, 2026.
Use the filters below to find and compare flights from Seattle to Duluth that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

SeattleDuluth

SEA - DLH

SEADLH

Seattle/Tacoma Intl

Fri 4/17

11:59 pm-10:38 am

1 stop8h 39m

Duluth Intl

Mon 4/20

6:57 pm-12:34 am

1 stop7h 37m

$318

SeattleDuluth

SEA - DLH

SEADLH

Seattle/Tacoma Intl

Tue 3/24

11:59 pm-10:43 am

1 stop8h 44m

Duluth Intl

Tue 3/31

3:08 pm-10:37 pm

1 stop9h 29m

$323

SeattleDuluth

SEA - DLH

SEADLH

Seattle/Tacoma Intl

Fri 4/17

11:35 am-12:29 am

2 stops10h 54m

Duluth Intl

Mon 4/20

6:57 pm-12:34 am

1 stop7h 37m

$324

SeattleDuluth

SEA - DLH

SEADLH

Seattle/Tacoma Intl

Tue 3/24

11:59 pm-10:43 am

1 stop8h 44m

Duluth Intl

Tue 3/31

11:19 am-11:27 pm

2 stops14h 08m

$329

SeattleDuluth

SEA - DLH

SEADLH

Seattle/Tacoma Intl

Fri 5/15

10:53 pm-10:34 am

1 stop9h 41m

Duluth Intl

Mon 5/18

6:44 pm-11:59 pm

1 stop7h 15m

$349

SeattleDuluth

SEA - DLH

SEADLH

Seattle/Tacoma Intl

Mon 4/13

11:59 pm-10:39 am

1 stop8h 40m

Duluth Intl

Sat 4/18

5:00 am-2:46 pm

2 stops11h 46m

$350

SeattleDuluth

SEA - DLH

SEADLH

Seattle/Tacoma Intl

Sat 4/18

11:59 pm-10:39 am

1 stop8h 40m

Duluth Intl

Wed 4/22

3:08 pm-10:42 pm

1 stop9h 34m

$378

SeattleDuluth

SEA - DLH

SEADLH

Seattle/Tacoma Intl

Mon 3/30

11:59 pm-10:29 am

1 stop8h 30m

Duluth Intl

Sun 4/5

11:19 am-7:00 pm

1 stop9h 41m

$379

SeattleDuluth

SEA - DLH

SEADLH

Seattle/Tacoma Intl

Sat 4/18

7:37 pm-10:39 am

2 stops13h 02m

Duluth Intl

Wed 4/22

3:08 pm-10:42 pm

1 stop9h 34m

$384

SeattleDuluth

SEA - DLH

SEADLH

Seattle/Tacoma Intl

Sat 4/18

7:37 pm-10:39 am

2 stops13h 02m

Duluth Intl

Wed 4/22

7:25 am-8:53 pm

2 stops15h 28m

$389

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 Duluth from

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 January. Flight prices, which tend to average around $313, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of January, then book flights to Duluth from Seattle during November instead. Flights to Duluth in November, while not as cheap as those in January, still average around $328.

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

7h 32m

Direct flights

None
The fastest flight from Seattle to Duluth takes 7h 32m
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. 7h 32m 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?

  • 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?

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
United AirlinesPriceFrom $233Free CancellationRating
7.4
9,409 reviews
Search United Airlines flights
DeltaPriceFrom $258Free CancellationRating
7.9
8,276 reviews
Search Delta flights

Traveling to a place near Duluth?

Book flights to Duluth if you plan to visit one of these locations
Two Harbors
Superior
Hayward
Cloquet

Why use momondo?

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.

An easier way to manage your Duluth trip

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