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Cheap flights from Duluth to Seattle from $258

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Duluth to Seattle departing on 5/8. 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
1 adult, Economy, 0 bags

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Find the cheapest flights from Duluth to Seattle

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
12:00 pm - 4:13 pm
DLH
-
SEA
6h 13m
1 stop
Delta Logo
6:05 am - 3:44 pm
SEA
-
DLH
7h 39m
1 stop
$363Delta
Fri, Oct 2 - Sat, Oct 10
United Airlines Logo
6:10 pm - 12:14 am
DLH
-
SEA
8h 04m
1 stop
United Airlines Logo
7:32 pm - 10:44 am
SEA
-
DLH
13h 12m
2 stops
$364United Airlines
Fri, Oct 2 - Sat, Oct 10
United Airlines Logo
6:10 pm - 12:14 am
DLH
-
SEA
8h 04m
1 stop
United Airlines Logo
11:50 pm - 10:44 am
SEA
-
DLH
8h 54m
1 stop
$388United Airlines
Fri, Oct 2 - Sat, Oct 10
United Airlines Logo
2:57 pm - 10:47 pm
DLH
-
SEA
9h 50m
1 stop
United Airlines Logo
10:53 pm - 10:34 am
SEA
-
DLH
9h 41m
1 stop
$394United Airlines
Thu, May 7 - Thu, May 14
United Airlines Logo
6:10 pm - 11:59 pm
DLH
-
SEA
7h 49m
1 stop
United Airlines Logo
7:00 am - 5:34 pm
SEA
-
DLH
8h 34m
1 stop
$405United Airlines
Wed, May 27 - Sat, May 30
United Airlines Logo
3:08 pm - 10:42 pm
DLH
-
SEA
9h 34m
1 stop
United Airlines Logo
11:59 pm - 10:39 am
SEA
-
DLH
8h 40m
1 stop
$408United Airlines
Wed, Apr 22 - Sun, Apr 26
United Airlines Logo
5:00 am - 2:36 pm
DLH
-
SEA
11h 36m
2 stops
United Airlines Logo
11:53 pm - 10:34 am
SEA
-
DLH
8h 41m
1 stop
$410United Airlines
Thu, May 7 - Thu, May 14
United Airlines Logo
6:57 pm - 12:34 am
DLH
-
SEA
7h 37m
1 stop
United Airlines Logo
6:00 am - 10:06 pm
SEA
-
DLH
14h 06m
2 stops
$414United Airlines
Fri, Apr 24 - Tue, Apr 28
Delta Logo
12:00 pm - 4:13 pm
DLH
-
SEA
6h 13m
1 stop
Delta Logo
6:05 am - 3:44 pm
SEA
-
DLH
7h 39m
1 stop
$417Delta
Fri, Oct 2 - Sat, Oct 10
United Airlines Logo
3:08 pm - 10:33 pm
DLH
-
SEA
9h 25m
2 stops
United Airlines Logo
8:55 am - 10:06 pm
SEA
-
DLH
11h 11m
2 stops
$419United Airlines
Fri, Apr 24 - Tue, Apr 28

United Airlines flights from Duluth to Seattle

Our best United Airlines deals on Duluth to Seattle flight tickets
United Airlines
Oct 2
DLH6:10 pmDuluth Intl
8h 04m
1 stop
SEA12:14 amSeattle/Tacoma Intl
Oct 10
SEA7:32 pmSeattle/Tacoma Intl
13h 12m
2 stops
DLH10:44 amDuluth Intl
$364
United Airlines
Oct 2
DLH6:10 pmDuluth Intl
8h 04m
1 stop
SEA12:14 amSeattle/Tacoma Intl
Oct 10
SEA11:50 pmSeattle/Tacoma Intl
8h 54m
1 stop
DLH10:44 amDuluth Intl
$388
United Airlines
May 7
DLH2:57 pmDuluth Intl
9h 50m
1 stop
SEA10:47 pmSeattle/Tacoma Intl
May 14
SEA10:53 pmSeattle/Tacoma Intl
9h 41m
1 stop
DLH10:34 amDuluth Intl
$394

Delta flights from Duluth to Seattle

Our best Delta deals on Duluth to Seattle flight tickets
Delta
Oct 2
DLH12:00 pmDuluth Intl
6h 13m
1 stop
SEA4:13 pmSeattle/Tacoma Intl
Oct 10
SEA6:05 amSeattle/Tacoma Intl
7h 39m
1 stop
DLH3:44 pmDuluth Intl
$363
Delta
Oct 2
DLH12:00 pmDuluth Intl
6h 13m
1 stop
SEA4:13 pmSeattle/Tacoma Intl
Oct 10
SEA6:05 amSeattle/Tacoma Intl
7h 39m
1 stop
DLH3:44 pmDuluth Intl
$417
Delta
Oct 2
DLH12:00 pmDuluth Intl
6h 13m
1 stop
SEA4:13 pmSeattle/Tacoma Intl
Oct 11
SEA6:05 amSeattle/Tacoma Intl
7h 39m
1 stop
DLH3:44 pmDuluth Intl
$428

momondo Fare Finder

 
Customize your flight search to find flights from Duluth to Seattle 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 April 12, 2026.
Use the filters below to find and compare flights from Duluth to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

DuluthSeattle

DLH - SEA

DLHSEA

Duluth Intl

Fri 10/2

12:00 pm-4:13 pm

1 stop6h 13m

Seattle/Tacoma Intl

Sat 10/10

6:05 am-3:44 pm

1 stop7h 39m

$363

DuluthSeattle

DLH - SEA

DLHSEA

Duluth Intl

Fri 10/2

6:10 pm-12:14 am

1 stop8h 04m

Seattle/Tacoma Intl

Sat 10/10

7:32 pm-10:44 am

2 stops13h 12m

$364

DuluthSeattle

DLH - SEA

DLHSEA

Duluth Intl

Fri 10/2

6:10 pm-12:14 am

1 stop8h 04m

Seattle/Tacoma Intl

Sat 10/10

11:50 pm-10:44 am

1 stop8h 54m

$388

DuluthSeattle

DLH - SEA

DLHSEA

Duluth Intl

Thu 5/7

2:57 pm-10:47 pm

1 stop9h 50m

Seattle/Tacoma Intl

Thu 5/14

10:53 pm-10:34 am

1 stop9h 41m

$394

DuluthSeattle

DLH - SEA

DLHSEA

Duluth Intl

Wed 5/27

6:10 pm-11:59 pm

1 stop7h 49m

Seattle/Tacoma Intl

Sat 5/30

7:00 am-5:34 pm

1 stop8h 34m

$405

DuluthSeattle

DLH - SEA

DLHSEA

Duluth Intl

Wed 4/22

3:08 pm-10:42 pm

1 stop9h 34m

Seattle/Tacoma Intl

Sun 4/26

11:59 pm-10:39 am

1 stop8h 40m

$408

DuluthSeattle

DLH - SEA

DLHSEA

Duluth Intl

Thu 5/7

5:00 am-2:36 pm

2 stops11h 36m

Seattle/Tacoma Intl

Thu 5/14

11:53 pm-10:34 am

1 stop8h 41m

$410

DuluthSeattle

DLH - SEA

DLHSEA

Duluth Intl

Fri 4/24

6:57 pm-12:34 am

1 stop7h 37m

Seattle/Tacoma Intl

Tue 4/28

6:00 am-10:06 pm

2 stops14h 06m

$414

DuluthSeattle

DLH - SEA

DLHSEA

Duluth Intl

Fri 10/2

12:00 pm-4:13 pm

1 stop6h 13m

Seattle/Tacoma Intl

Sat 10/10

6:05 am-3:44 pm

1 stop7h 39m

$417

DuluthSeattle

DLH - SEA

DLHSEA

Duluth Intl

Fri 4/24

3:08 pm-10:33 pm

2 stops9h 25m

Seattle/Tacoma Intl

Tue 4/28

8:55 am-10:06 pm

2 stops11h 11m

$419

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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How to get the cheapest flight ticket from Duluth to Seattle

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 typical price of a round-trip flight between Duluth and Seattle?

When to book flights from Duluth to Seattle

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

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

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

Fastest flight time

7h 15m

Direct flights

None
The fastest flight from Duluth to Seattle takes 7h 15m
There are no direct flights from Duluth to Seattle. There are no popular flight routes from Duluth to Seattle.
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Frequently asked questions about flying from Duluth to Seattle

  • How far is Duluth Intl to Seattle/Tacoma Intl by plane?

    The distance between Duluth Intl and Seattle/Tacoma Intl is about 1410.5 mi. Flights usually cover this in 7h 15m, depending on flying conditions and air traffic around both airports.

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

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

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

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

  • What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

    The travel and health documents you'll need for your trip to Seattle/Tacoma Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Seattle/Tacoma Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Duluth to Seattle?

Best airlines flying from Duluth to Seattle

Compare and see reviews for airlines that fly from Duluth to Seattle with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $258Free CancellationRating
7.4
9,574 reviews
Search United Airlines flights
DeltaPriceFrom $258Free CancellationRating
7.9
8,408 reviews
Search Delta flights

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Tacoma
Leavenworth
SeaTac
Ocean Shores
Renton
Olympia
Lynnwood
Redmond
Kent
Marysville
Puyallup
Lakewood
Cle Elum
Tukwila
Federal Way
Centralia
Fife
Westport
Tumwater
Shoreline

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Duluth to Seattle. momondo saves you time and could save you money on your trip.

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

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

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

Once you have performed a search for Duluth to Seattle flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Duluth to Seattle right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Duluth to Seattle 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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