What are the cheapest airlines flying from Duluth to Seattle round-trip?

Currently priced at $355, United Airlines will fly you from Duluth to Seattle and back. In addition to United Airlines, many other airlines offer competitively priced options for your trip. Check Cheapflights for deals on Delta for as low as $397. United Airlines is 35% cheaper than the average price of flights available within the next 90 days to this destination.

What are the most popular airlines that fly from Duluth to Seattle?

The most popular airlines flying from Duluth to Seattle are Delta, Sun Country Air and United Airlines. Something to consider prior to booking your flight.

Can I find flights from Duluth to Seattle for under $400 on Cheapflights?

Yes, there are multiple flights from Duluth to Seattle for under $400. The cheapest flight booked recently is on United Airlines for just $355, but on average you can expect to pay $459.

Which airlines flying from Duluth Intl to Seattle/Tacoma Intl have flexible cancellations due to COVID-19?

Due to the rapidly changing circumstances due to COVID-19, airlines like Delta, United Airlines, and Sun Country Air flying from Duluth Intl to Seattle/Tacoma Intl have implemented new flexible cancellation policies.

What is the cheapest day to fly round-trip from Duluth to Seattle?

Saturday flights are generally found to be more expensive for flights from Duluth to Seattle. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Seattle.

What is the cheapest month to fly from Duluth to Seattle?

Due to multiple factors, expect to potentially pay more when booking in July. For low rates, April can be a great choice for travel to Seattle. Flights to Seattle from Duluth in April are about $551 on average during April, but can be found for as low as $327.

When is the cheapest time to fly from Duluth to Seattle (DLH - SEA)?

When flying from Duluth to Seattle, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 61% versus a flight in the evening.

What does DLH to SEA mean?

DLH and SEA are unique codes to identify airports used in the aviation industry. They are defined by IATA (International Air Transport Association) and are commonly called IATA codes. DLH to SEA refers to a flight route from Duluth Intl Airport to Seattle/Tacoma Intl Airport.

Flights from Duluth, MN to Seattle, WA from $268

How to find the cheapest flight from Duluth (DLH) to Seattle (SEA)

Popular in	July
Cheapest in	April
Average price	$497
Round-trip from	$237

High demand for flights, 47% potential price rise

Search Deals

Best time to find cheap flights, 39% potential price drop

Search Deals

Average for round-trip flights in June 2023

Search Deals

From Duluth Intl to Seattle/Tacoma Intl

Search Deals

DLH - SEA Price	$237 - $574
SEA Temperature	41 - 66.2 °F
SEA Rainfall	0.7 - 6.6 inches

DLH - SEA

Price

$237 - $574

SEA

Temperature

41 - 66.2 °F

SEA

Rainfall

0.7 - 6.6 inches

Cheap flights from Duluth to Seattle in June, July 2023

These are some of the best deals we've found on flights to Seattle in 2023 at this time. More deals are always being added, so be sure to check back regularly.

Jun 23 - Jun 26

DLH

Duluth Intl

SEA

Seattle/Tacoma Intl

1 stop

19h 33m

SEA

Seattle/Tacoma Intl

DLH

Duluth Intl

1 stop

19h 39m

$600

United Airlines

Deal found 5/31

Jul 13 - Jul 21

DLH

Duluth Intl

SEA

Seattle/Tacoma Intl

1 stop

7h 39m

SEA

Seattle/Tacoma Intl

DLH

Duluth Intl

1 stop

6h 08m

$603

Delta

Deal found 6/1

Jul 13 - Jul 21

DLH

Duluth Intl

SEA

Seattle/Tacoma Intl

1 stop

7h 55m

SEA

Seattle/Tacoma Intl

DLH

Duluth Intl

1 stop

6h 08m

$613

Delta

Deal found 5/31

Jul 31 - Aug 6

DLH

Duluth Intl

SEA

Seattle/Tacoma Intl

1 stop

7h 55m

SEA

Seattle/Tacoma Intl

DLH

Duluth Intl

1 stop

7h 11m

$629

Delta

Deal found 5/30

Jul 31 - Aug 7

DLH

Duluth Intl

SEA

Seattle/Tacoma Intl

1 stop

7h 55m

SEA

Seattle/Tacoma Intl

DLH

Duluth Intl

1 stop

5h 57m

$668

Delta

Deal found 5/30

Jul 6 - Jul 10

DLH

Duluth Intl

SEA

Seattle/Tacoma Intl

1 stop

19h 31m

SEA

Seattle/Tacoma Intl

DLH

Duluth Intl

2 stops

17h 57m

$670

United Airlines

Deal found 5/31

Jun 23 - Jun 26

DLH

Duluth Intl

SEA

Seattle/Tacoma Intl

1 stop

19h 33m

SEA

Seattle/Tacoma Intl

DLH

Duluth Intl

2 stops

23h 08m

$698

United Airlines

Deal found 5/31

Jul 6 - Jul 10

DLH

Duluth Intl

SEA

Seattle/Tacoma Intl

1 stop

19h 31m

SEA

Seattle/Tacoma Intl

DLH

Duluth Intl

1 stop

15h 20m

$718

United Airlines

Deal found 5/31

Jul 31 - Aug 7

DLH

Duluth Intl

SEA

Seattle/Tacoma Intl

1 stop

7h 55m

SEA

Seattle/Tacoma Intl

DLH

Duluth Intl

2 stops

9h 11m

$722

Delta

Deal found 5/30

Duluth to Seattle 2023 flight deals

These are some of the best deals we've found on flights to Seattle in 2023 at this time. More deals are always being added, so be sure to check back regularly.

Aug 23 - Aug 28

DLH

Duluth Intl

SEA

Seattle/Tacoma Intl

1 stop

19h 36m

SEA

Seattle/Tacoma Intl

DLH

Duluth Intl

1 stop

19h 10m

$355

United Airlines

Deal found 6/1

Aug 23 - Aug 28

DLH

Duluth Intl

SEA

Seattle/Tacoma Intl

1 stop

10h 32m

SEA

Seattle/Tacoma Intl

DLH

Duluth Intl

2 stops

17h 01m

$365

United Airlines

Deal found 6/1

Aug 24 - Aug 28

DLH

Duluth Intl

SEA

Seattle/Tacoma Intl

1 stop

8h 59m

SEA

Seattle/Tacoma Intl

DLH

Duluth Intl

2 stops

17h 01m

$386

United Airlines

Deal found 5/31

Oct 12 - Oct 14

DLH

Duluth Intl

SEA

Seattle/Tacoma Intl

1 stop

7h 36m

SEA

Seattle/Tacoma Intl

DLH

Duluth Intl

1 stop

7h 47m

$397

Delta

Deal found 6/1

Aug 23 - Aug 28

DLH

Duluth Intl

SEA

Seattle/Tacoma Intl

2 stops

17h 40m

SEA

Seattle/Tacoma Intl

DLH

Duluth Intl

2 stops

17h 01m

$405

United Airlines

Deal found 6/1

Aug 24 - Aug 28

DLH

Duluth Intl

SEA

Seattle/Tacoma Intl

1 stop

8h 59m

SEA

Seattle/Tacoma Intl

DLH

Duluth Intl

1 stop

19h 10m

$411

United Airlines

Deal found 5/31

Sep 25 - Oct 3

DLH

Duluth Intl

SEA

Seattle/Tacoma Intl

1 stop

20h 26m

SEA

Seattle/Tacoma Intl

DLH

Duluth Intl

1 stop

9h 00m

$436

United Airlines

Deal found 6/1

Aug 23 - Aug 27

DLH

Duluth Intl

SEA

Seattle/Tacoma Intl

1 stop

10h 32m

SEA

Seattle/Tacoma Intl

DLH

Duluth Intl

1 stop

18h 37m

$450

United Airlines

Deal found 6/1

Aug 24 - Aug 27

DLH

Duluth Intl

SEA

Seattle/Tacoma Intl

1 stop

8h 59m

SEA

Seattle/Tacoma Intl

DLH

Duluth Intl

1 stop

11h 46m

$471

United Airlines

Deal found 5/31

Cheap Delta flights from Duluth to Seattle

Consider these cheap Delta flights we've found departing from Duluth to Seattle. Be sure to come back soon if the deals available don't appeal to you at this time.

Oct 12 - Oct 14

DLH

Duluth Intl

SEA

Seattle/Tacoma Intl

1 stop

7h 36m

SEA

Seattle/Tacoma Intl

DLH

Duluth Intl

1 stop

7h 47m

$397

Delta

Deal found 6/1

Sep 24 - Oct 2

DLH

Duluth Intl

SEA

Seattle/Tacoma Intl

2 stops

14h 59m

SEA

Seattle/Tacoma Intl

DLH

Duluth Intl

1 stop

7h 47m

$496

Delta

Deal found 6/1

Oct 27 - Oct 30

DLH

Duluth Intl

SEA

Seattle/Tacoma Intl

1 stop

5h 55m

SEA

Seattle/Tacoma Intl

DLH

Duluth Intl

1 stop

4h 44m

$498

Delta

Deal found 6/1

Sep 22 - Oct 3

DLH

Duluth Intl

SEA

Seattle/Tacoma Intl

2 stops

14h 59m

SEA

Seattle/Tacoma Intl

DLH

Duluth Intl

1 stop

7h 30m

$521

Delta

Deal found 6/1

Sep 23 - Oct 4

DLH

Duluth Intl

SEA

Seattle/Tacoma Intl

2 stops

13h 01m

SEA

Seattle/Tacoma Intl

DLH

Duluth Intl

1 stop

7h 30m

$526

Delta

Deal found 6/1

Sep 23 - Oct 1

DLH

Duluth Intl

SEA

Seattle/Tacoma Intl

1 stop

7h 31m

SEA

Seattle/Tacoma Intl

DLH

Duluth Intl

1 stop

7h 47m

$532

Delta

Deal found 6/1

Sep 22 - Oct 3

DLH

Duluth Intl

SEA

Seattle/Tacoma Intl

1 stop

10h 48m

SEA

Seattle/Tacoma Intl

DLH

Duluth Intl

1 stop

7h 47m

$536

Delta

Deal found 6/1

Sep 23 - Oct 1

DLH

Duluth Intl

SEA

Seattle/Tacoma Intl

2 stops

16h 05m

SEA

Seattle/Tacoma Intl

DLH

Duluth Intl

2 stops

24h 52m

$540

Delta

Deal found 6/1

Sep 23 - Oct 2

DLH

Duluth Intl

SEA

Seattle/Tacoma Intl

2 stops

13h 47m

SEA

Seattle/Tacoma Intl

DLH

Duluth Intl

2 stops

22h 42m

$545

Delta

Deal found 6/1

Cheap United Airlines flights from Duluth to Seattle

To aid your search, here are some of the cheapest United Airlines flights we've found from Duluth to Seattle. If these deals don't fit your criteria, make sure to check back soon as new deals are always added.

Aug 23 - Aug 28

DLH

Duluth Intl

SEA

Seattle/Tacoma Intl

1 stop

19h 36m

SEA

Seattle/Tacoma Intl

DLH

Duluth Intl

1 stop

19h 10m

$355

United Airlines

Deal found 6/1

Aug 23 - Aug 28

DLH

Duluth Intl

SEA

Seattle/Tacoma Intl

1 stop

10h 32m

SEA

Seattle/Tacoma Intl

DLH

Duluth Intl

2 stops

17h 01m

$365

United Airlines

Deal found 6/1

Aug 24 - Aug 28

DLH

Duluth Intl

SEA

Seattle/Tacoma Intl

1 stop

8h 59m

SEA

Seattle/Tacoma Intl

DLH

Duluth Intl

2 stops

17h 01m

$386

United Airlines

Deal found 5/31

Aug 23 - Aug 28

DLH

Duluth Intl

SEA

Seattle/Tacoma Intl

2 stops

17h 40m

SEA

Seattle/Tacoma Intl

DLH

Duluth Intl

2 stops

17h 01m

$405

United Airlines

Deal found 6/1

Aug 24 - Aug 28

DLH

Duluth Intl

SEA

Seattle/Tacoma Intl

1 stop

8h 59m

SEA

Seattle/Tacoma Intl

DLH

Duluth Intl

1 stop

19h 10m

$411

United Airlines

Deal found 5/31

Sep 25 - Oct 3

DLH

Duluth Intl

SEA

Seattle/Tacoma Intl

1 stop

20h 26m

SEA

Seattle/Tacoma Intl

DLH

Duluth Intl

1 stop

9h 00m

$436

United Airlines

Deal found 6/1

Aug 23 - Aug 27

DLH

Duluth Intl

SEA

Seattle/Tacoma Intl

1 stop

10h 32m

SEA

Seattle/Tacoma Intl

DLH

Duluth Intl

1 stop

18h 37m

$450

United Airlines

Deal found 6/1

Aug 24 - Aug 27

DLH

Duluth Intl

SEA

Seattle/Tacoma Intl

1 stop

8h 59m

SEA

Seattle/Tacoma Intl

DLH

Duluth Intl

1 stop

11h 46m

$471

United Airlines

Deal found 5/31

Sep 25 - Oct 2

DLH

Duluth Intl

SEA

Seattle/Tacoma Intl

1 stop

20h 26m

SEA

Seattle/Tacoma Intl

DLH

Duluth Intl

1 stop

15h 59m

$475

United Airlines

Deal found 6/1

One-way flights to Seattle from Duluth

Take a look at some of the one-way flights we've detected from Duluth to Seattle. For those needing a return trip from Duluth, there is a search form available above.

Aug 28

DLH

Duluth Intl

SEA

Seattle/Tacoma Intl

1 stop

8h 59m

$268

United Airlines

Deal found 5/31

Aug 28

DLH

Duluth Intl

SEA

Seattle/Tacoma Intl

2 stops

22h 49m

$328

United Airlines

Deal found 5/31

Aug 28

DLH

Duluth Intl

SEA

Seattle/Tacoma Intl

3 stops

32h 36m

$333

United Airlines

Deal found 5/31

Jun 6

DLH

Duluth Intl

SEA

Seattle/Tacoma Intl

1 stop

5h 40m

$339

Delta

Deal found 5/31

Jul 30

DLH

Duluth Intl

SEA

Seattle/Tacoma Intl

1 stop

7h 55m

$359

Delta

Deal found 5/31

Jul 30

DLH

Duluth Intl

SEA

Seattle/Tacoma Intl

2 stops

8h 34m

$483

Delta

Deal found 5/31

Jun 6

DLH

Duluth Intl

SEA

Seattle/Tacoma Intl

2 stops

10h 29m

$523

Multiple Airlines

Deal found 5/31

Jun 8

DLH

Duluth Intl

SEA

Seattle/Tacoma Intl

1 stop

9h 21m

$540

United Airlines

Deal found 5/31

Jun 8

DLH

Duluth Intl

SEA

Seattle/Tacoma Intl

2 stops

14h 27m

$588

Multiple Airlines

Deal found 5/31

Find flights from Duluth to Seattle within your budget

Fly from

Fly to

Budget

$355 - $521

Route

Depart

Return

Price

Duluth IntlSeattle/Tacoma Intl

DLH - SEA

DLHSEA

Duluth Intl

Wed 8/23

1 stop19h 36m

Seattle/Tacoma Intl

Mon 8/28

1 stop19h 10m

$355

Pick Dates

Duluth IntlSeattle/Tacoma Intl

DLH - SEA

DLHSEA

Duluth Intl

Wed 8/23

1 stop10h 32m

Seattle/Tacoma Intl

Mon 8/28

2 stops17h 01m

$365

Pick Dates

Duluth IntlSeattle/Tacoma Intl

DLH - SEA

DLHSEA

Duluth Intl

Thu 8/24

1 stop8h 59m

Seattle/Tacoma Intl

Mon 8/28

2 stops17h 01m

$386

Pick Dates

Duluth IntlSeattle/Tacoma Intl

DLH - SEA

DLHSEA

Duluth Intl

Thu 10/12

1 stop7h 36m

Seattle/Tacoma Intl

Sat 10/14

1 stop7h 47m

$397

Pick Dates

Duluth IntlSeattle/Tacoma Intl

DLH - SEA

DLHSEA

Duluth Intl

Wed 8/23

2 stops17h 40m

Seattle/Tacoma Intl

Mon 8/28

2 stops17h 01m

$405

Pick Dates

Duluth IntlSeattle/Tacoma Intl

DLH - SEA

DLHSEA

Duluth Intl

Thu 8/24

1 stop8h 59m

Seattle/Tacoma Intl

Mon 8/28

1 stop19h 10m

$411

Pick Dates

Duluth IntlSeattle/Tacoma Intl

DLH - SEA

DLHSEA

Duluth Intl

Sun 9/24

2 stops14h 59m

Seattle/Tacoma Intl

Mon 10/2

1 stop7h 47m

$496

Pick Dates

Duluth IntlSeattle/Tacoma Intl

DLH - SEA

DLHSEA

Duluth Intl

Fri 10/27

1 stop5h 55m

Seattle/Tacoma Intl

Mon 10/30

1 stop4h 44m

$498

Pick Dates

Duluth IntlSeattle/Tacoma Intl

DLH - SEA

DLHSEA

Duluth Intl

Fri 9/22

2 stops14h 59m

Seattle/Tacoma Intl

Tue 10/3

1 stop7h 30m

$521

Pick Dates

Flights are sorted by cheapest first

Deals found on 6/1

Reviews of Airlines Servicing Seattle

See what other customers who have flown with Delta and United Airlines from Duluth to Seattle have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Delta

8.0

Very good

2,369 reviews

Check prices

Reviews

1 / 10

Over head compartment seemed a little small but wasn’t overloaded. The Airbus plane had 2 seats on one side and 3 on the other. My wife especially liked the fact we only had 2 seats on our side of the plane. I like being at the window she likes being on the aisle not middle seat. She appreciated have her own video screen with lots of movies available on the back of the seat in front of us. She also appreciated that the flight was on time. The crew was great.

Delta

8.0

Very good

2,369 reviews

Delta

8.0

Very good

2,369 reviews

Check prices

Reviews

1 / 10

Over head compartment seemed a little small but wasn’t overloaded. The Airbus plane had 2 seats on one side and 3 on the other. My wife especially liked the fact we only had 2 seats on our side of the plane. I like being at the window she likes being on the aisle not middle seat. She appreciated have her own video screen with lots of movies available on the back of the seat in front of us. She also appreciated that the flight was on time. The crew was great.

United Airlines

7.6

Good

1,531 reviews

Delta

8.0

Very good

2,369 reviews

Check prices

Reviews

1 / 10

Over head compartment seemed a little small but wasn’t overloaded. The Airbus plane had 2 seats on one side and 3 on the other. My wife especially liked the fact we only had 2 seats on our side of the plane. I like being at the window she likes being on the aisle not middle seat. She appreciated have her own video screen with lots of movies available on the back of the seat in front of us. She also appreciated that the flight was on time. The crew was great.

Related info for your journey

Alternative routes for Duluth to Seattle

Minneapolis to Seattlefrom $197 pp

Minneapolis to Spokanefrom $234 pp

Minneapolis to Pascofrom $454 pp

Top 3 airlines flying from Duluth to Seattle

Airline	Cheapest	Average	Flexibility	On-time	COVID-19 safety
Sun Country Air	Cheapest$202	Average$373	FlexibilityNo cancel fee	On-time83%	COVID-19 safety	Search Sun Country Air flights
Delta	Cheapest$246	Average$582	FlexibilityNo cancel fee	On-timeN/A	COVID-19 safety	Search Delta flights
United Airlines	Cheapest$318	Average$532	FlexibilityNo cancel fee	On-time69%	COVID-19 safety	Search United Airlines flights

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Duluth to San Francisco flights

Cheap flights from Duluth to Seattle (DLH - SEA) from $268

This is the cheapest one-way flight price, found on 5/31. Prices may vary by date and flight preferences.

How to find the cheapest flight from Duluth (DLH) to Seattle (SEA)

All the information you need to plan the best DLH to SEA flight in 2023: compare Duluth to Seattle flight prices with the expected peak season, weather and rainfall in Seattle.

Popular in

Cheapest in

Average price

Round-trip from

What is the cheapest day to fly round-trip from Duluth to Seattle?

What is the cheapest month to fly from Duluth to Seattle?

When is the cheapest time to fly from Duluth to Seattle (DLH - SEA)?

Cheap flights from Duluth to Seattle in June, July 2023

The best prices found for DLH to SEA flights for June, July

These are some of the best deals we've found on flights to Seattle in 2023 at this time. More deals are always being added, so be sure to check back regularly.

Duluth to Seattle 2023 flight deals

Cheap flights to Seattle from Duluth found for this year

These are some of the best deals we've found on flights to Seattle in 2023 at this time. More deals are always being added, so be sure to check back regularly.

Cheap Delta flights from Duluth to Seattle

Consider these cheap Delta flights we've found departing from Duluth to Seattle. Be sure to come back soon if the deals available don't appeal to you at this time.

Cheap United Airlines flights from Duluth to Seattle

To aid your search, here are some of the cheapest United Airlines flights we've found from Duluth to Seattle. If these deals don't fit your criteria, make sure to check back soon as new deals are always added.

One-way flights to Seattle from Duluth

The cheapest one-way flights from Duluth to Seattle

Take a look at some of the one-way flights we've detected from Duluth to Seattle. For those needing a return trip from Duluth, there is a search form available above.

Find flights from Duluth to Seattle within your budget

Use the slider to find flights from Duluth to Seattle that fit your budget.

Reviews of Airlines Servicing Seattle

See what other customers who have flown with Delta and United Airlines from Duluth to Seattle have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Useful info, stats and facts about Duluth to Seattle flights.

Which airlines flying from Duluth Intl to Seattle/Tacoma Intl have flexible cancellations due to COVID-19?

Can I find flights from Duluth to Seattle for under $400 on Cheapflights?

What are the cheapest airlines flying from Duluth to Seattle round-trip?

What are the most popular airlines that fly from Duluth to Seattle?

What does DLH to SEA mean?

Other flights from Duluth

Other flights to Seattle

Flights to Seattle from Duluth

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Alternative routes for Duluth to Seattle

See prices for flight routes from nearby airports that may be better suited for you.

Top 3 airlines flying from Duluth to Seattle

The chart below displays the airlines Cheapflights users traveling from Duluth to Seattle choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.

Popular flight searches

Check out other popular destinations found by fellow travelers in 2023

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