Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Seattle to Duluth from $233

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 11/24. 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

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Seattle to Duluth

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
11:30 pm - 10:38 amSEA-DLH
9h 08m1 stop
United Airlines Logo
11:14 am - 6:52 pmDLH-SEA
9h 38m1 stop
$290United Airlines
Find Deal
Thu, Nov 13 - Thu, Nov 20
United Airlines Logo
11:30 pm - 10:38 amSEA-DLH
9h 08m1 stop
United Airlines Logo
11:14 am - 9:13 pmDLH-SEA
11h 59m2 stops
$295United Airlines
Find Deal
Thu, Nov 13 - Thu, Nov 20
United Airlines Logo
9:04 am - 9:59 pmSEA-DLH
10h 55m2 stops
United Airlines Logo
11:14 am - 9:13 pmDLH-SEA
11h 59m2 stops
$339United Airlines
Find Deal
Thu, Nov 13 - Thu, Nov 20
Delta Logo
6:10 pm - 10:07 amSEA-DLH
13h 57m2 stops
Delta Logo
4:20 pm - 11:35 pmDLH-SEA
9h 15m1 stop
$405Delta
Find Deal
Sat, Mar 7 - Wed, Mar 11
Delta Logo
6:10 pm - 10:07 amSEA-DLH
13h 57m2 stops
Delta Logo
4:20 pm - 8:32 pmDLH-SEA
6h 12m1 stop
$418Delta
Find Deal
Sat, Mar 7 - Wed, Mar 11
United Airlines Logo
11:59 pm - 10:38 amSEA-DLH
8h 39m1 stop
United Airlines Logo
7:55 am - 8:51 pmDLH-SEA
14h 56m3 stops
$429United Airlines
Find Deal
Fri, Oct 31 - Tue, Nov 4
United Airlines Logo
9:04 am - 9:59 pmSEA-DLH
10h 55m2 stops
United Airlines Logo
7:55 am - 8:51 pmDLH-SEA
14h 56m3 stops
$434United Airlines
Find Deal
Fri, Oct 31 - Tue, Nov 4
Delta Logo
12:00 pm - 2:24 pmSEA-DLH
24h 24m1 stop
Delta Logo
4:20 pm - 11:35 pmDLH-SEA
9h 15m1 stop
$441Delta
Find Deal
Sat, Mar 7 - Wed, Mar 11
Delta Logo
9:30 am - 10:07 amSEA-DLH
22h 37m2 stops
Delta Logo
12:00 pm - 4:19 pmDLH-SEA
6h 19m1 stop
$456Delta
Find Deal
Sat, Mar 7 - Wed, Mar 11
Delta Logo
1:35 pm - 10:43 pmSEA-DLH
7h 08m1 stop
Delta Logo
4:10 pm - 8:20 pmDLH-SEA
6h 10m1 stop
$508Delta
Find Deal
Fri, Oct 31 - Tue, Nov 4

Delta flights from Seattle to Duluth

Our best Delta deals on Seattle to Duluth flight tickets
Delta
Mar 7
SEA6:10 pmSeattle/Tacoma Intl
13h 57m
2 stops
DLH10:07 amDuluth Intl
Mar 11
DLH4:20 pmDuluth Intl
9h 15m
1 stop
SEA11:35 pmSeattle/Tacoma Intl
$405
Find similar
Delta
Mar 7
SEA6:10 pmSeattle/Tacoma Intl
13h 57m
2 stops
DLH10:07 amDuluth Intl
Mar 11
DLH4:20 pmDuluth Intl
6h 12m
1 stop
SEA8:32 pmSeattle/Tacoma Intl
$418
Find similar
Delta
Mar 7
SEA12:00 pmSeattle/Tacoma Intl
24h 24m
1 stop
DLH2:24 pmDuluth Intl
Mar 11
DLH4:20 pmDuluth Intl
9h 15m
1 stop
SEA11:35 pmSeattle/Tacoma Intl
$441
Find similar

United Airlines flights from Seattle to Duluth

Our best United Airlines deals on Seattle to Duluth flight tickets
United Airlines
Nov 13
SEA11:30 pmSeattle/Tacoma Intl
9h 08m
1 stop
DLH10:38 amDuluth Intl
Nov 20
DLH11:14 amDuluth Intl
9h 38m
1 stop
SEA6:52 pmSeattle/Tacoma Intl
$290
Find similar
United Airlines
Nov 13
SEA11:30 pmSeattle/Tacoma Intl
9h 08m
1 stop
DLH10:38 amDuluth Intl
Nov 20
DLH11:14 amDuluth Intl
11h 59m
2 stops
SEA9:13 pmSeattle/Tacoma Intl
$295
Find similar
United Airlines
Oct 25
SEA7:00 amSeattle/Tacoma Intl
9h 37m
1 stop
DLH6:37 pmDuluth Intl
Oct 29
DLH11:14 amDuluth Intl
9h 38m
1 stop
SEA6:52 pmSeattle/Tacoma Intl
$338
Find similar

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 October 16, 2025.
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

SeattleDuluth

SEA - DLH

SEADLH

Seattle/Tacoma Intl

Thu 11/13

11:30 pm-10:38 am

1 stop9h 08m

Duluth Intl

Thu 11/20

11:14 am-6:52 pm

1 stop9h 38m

$290

SeattleDuluth

SEA - DLH

SEADLH

Seattle/Tacoma Intl

Thu 11/13

11:30 pm-10:38 am

1 stop9h 08m

Duluth Intl

Thu 11/20

11:14 am-9:13 pm

2 stops11h 59m

$295

SeattleDuluth

SEA - DLH

SEADLH

Seattle/Tacoma Intl

Thu 11/13

9:04 am-9:59 pm

2 stops10h 55m

Duluth Intl

Thu 11/20

11:14 am-9:13 pm

2 stops11h 59m

$339

SeattleDuluth

SEA - DLH

SEADLH

Seattle/Tacoma Intl

Sat 3/7

6:10 pm-10:07 am

2 stops13h 57m

Duluth Intl

Wed 3/11

4:20 pm-11:35 pm

1 stop9h 15m

$405

SeattleDuluth

SEA - DLH

SEADLH

Seattle/Tacoma Intl

Sat 3/7

6:10 pm-10:07 am

2 stops13h 57m

Duluth Intl

Wed 3/11

4:20 pm-8:32 pm

1 stop6h 12m

$418

SeattleDuluth

SEA - DLH

SEADLH

Seattle/Tacoma Intl

Fri 10/31

11:59 pm-10:38 am

1 stop8h 39m

Duluth Intl

Tue 11/4

7:55 am-8:51 pm

3 stops14h 56m

$429

SeattleDuluth

SEA - DLH

SEADLH

Seattle/Tacoma Intl

Fri 10/31

9:04 am-9:59 pm

2 stops10h 55m

Duluth Intl

Tue 11/4

7:55 am-8:51 pm

3 stops14h 56m

$434

SeattleDuluth

SEA - DLH

SEADLH

Seattle/Tacoma Intl

Sat 3/7

12:00 pm-2:24 pm

1 stop24h 24m

Duluth Intl

Wed 3/11

4:20 pm-11:35 pm

1 stop9h 15m

$441

SeattleDuluth

SEA - DLH

SEADLH

Seattle/Tacoma Intl

Sat 3/7

9:30 am-10:07 am

2 stops22h 37m

Duluth Intl

Wed 3/11

12:00 pm-4:19 pm

1 stop6h 19m

$456

SeattleDuluth

SEA - DLH

SEADLH

Seattle/Tacoma Intl

Fri 10/31

1:35 pm-10:43 pm

1 stop7h 08m

Duluth Intl

Tue 11/4

4:10 pm-8:20 pm

1 stop6h 10m

$508

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 resultsSorted by cheapest first
1
2

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 November. Flight prices, which tend to average around $193, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of November, then book flights to Duluth from Seattle during March instead. Flights to Duluth in March, while not as cheap as those in November, still average around $295.

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

Direct flights

None
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 08m 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
DeltaPriceFrom $258Free CancellationRating
7.9
7,984 reviews
Search Delta flights
United AirlinesPriceFrom $301Free CancellationRating
7.4
8,982 reviews
Search United Airlines flights

Traveling to a place near Duluth?

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

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sat 11/15
Sat 11/22
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States