HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Seattle

$348+ Cheap flights from Duluth to Seattle (DLH - SEA)

DLH — SEA
Nov 11 — Nov 181
Wed 11/11
Wed 11/18
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Duluth to Seattle with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Duluth to Seattle

Cheapest flights from Duluth to Seattle

Fri 12/45:00 am -
1 stop7h 45m
Mon 12/71:45 pm -
1 stop7h 13m
Deal found 10/7$364
Fri 10/237:45 am -
1 stop10h 06m
Tue 10/2710:56 pm -
1 stop9h 45m
Deal found 10/7$418
Thu 10/2911:16 am -
1 stop9h 47m
Sun 11/110:56 pm -
1 stop9h 45m
Deal found 10/8$421
Mon 10/193:10 pm -
1 stop9h 43m
Sat 10/2411:13 pm -
1 stop9h 28m
Deal found 10/8$453
Fri 10/2311:18 am -
1 stop9h 34m
Fri 10/3010:56 pm -
1 stop9h 43m
Deal found 10/9$493
Fri 12/183:22 pm -
1 stop9h 10m
Fri 12/252:10 pm -
1 stop7h 18m
Deal found 10/9$501
Sat 12/55:54 am -
1 stop7h 50m
Wed 12/92:05 pm -
1 stop7h 04m
Deal found 10/7$502

Find flight deals from Duluth to Seattle

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$348
(United Airlines)
Provider with most accurate pricing for Duluth Intl-Seattle/Tacoma Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Duluth Intl-Seattle/Tacoma Intl flights.
Search Deals
From Duluth Intl to Seattle/Tacoma Intl
Search Deals

Cheapflights Fare Finder

 
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 Duluth Intl - SEA Seattle/Tacoma Intl

DLHSEA

Duluth Intl

Fri 1/22

5:50 am-11:47 am

1 stop7h 57m

Seattle/Tacoma Intl

Sun 1/24

10:52 am-9:50 pm

1 stop8h 58m

$348

DuluthSeattle

DLH Duluth Intl - SEA Seattle/Tacoma Intl

DLHSEA

Duluth Intl

Fri 10/23

3:10 pm-10:59 pm

2 stops9h 49m

Seattle/Tacoma Intl

Tue 10/27

7:35 pm-10:41 am

2 stops13h 06m

$440

DuluthSeattle

DLH Duluth Intl - SEA Seattle/Tacoma Intl

DLHSEA

Duluth Intl

Fri 10/23

11:18 am-6:52 pm

1 stop9h 34m

Seattle/Tacoma Intl

Fri 10/30

10:56 pm-10:39 am

1 stop9h 43m

$493

DuluthSeattle

DLH Duluth Intl - SEA Seattle/Tacoma Intl

DLHSEA

Duluth Intl

Sat 12/5

5:54 am-6:24 pm

2 stops14h 30m

Seattle/Tacoma Intl

Wed 12/9

2:05 pm-11:09 pm

1 stop7h 04m

$508

DuluthSeattle

DLH Duluth Intl - SEA Seattle/Tacoma Intl

DLHSEA

Duluth Intl

Thu 10/29

11:16 am-11:18 pm

2 stops14h 02m

Seattle/Tacoma Intl

Sun 11/1

8:35 pm-10:41 am

2 stops12h 06m

$613

DuluthSeattle

DLH Duluth Intl - SEA Seattle/Tacoma Intl

DLHSEA

Duluth Intl

Fri 12/4

12:18 pm-5:10 pm

1 stop6h 52m

Seattle/Tacoma Intl

Mon 12/7

9:40 am-10:58 pm

2 stops11h 18m

$625

DuluthSeattle

DLH Duluth Intl - SEA Seattle/Tacoma Intl

DLHSEA

Duluth Intl

Mon 12/28

7:00 am-9:49 am

2 stops28h 49m

Seattle/Tacoma Intl

Wed 12/31

12:00 am-2:00 am

Nonstop0h 00m

$828

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/8

Sorted by cheapest first

Compare providers for flights from Duluth to Seattle

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Duluth to Seattle in October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Duluth-Seattle flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Duluth-Seattle flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Duluth-Seattle flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Duluth-Seattle flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Duluth-Seattle flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Duluth to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Duluth with our price prediction graph.
Estimated round-trip price

Reviews of airlines servicing Seattle

Read reviews from past customers who have flown Delta and United Airlines from Duluth to Seattle. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.8
Good
8,653 reviews

Crew

8.5

Food

7.2

Overall

7.8

Boarding

8.1

Comfort

7.8

Entertainment

7.8

Reviews

1 / 20
8.0
Excellent

Lesley,Aug 2023

LIH - SEA

It was a red eye flight . And after take off and the first service the flight attendants were no where to be found except in the galley. When I went to the bathroom, the entrance was blocked by a FA sitting and he basically exhaled loudly as he had to move his legs so I could get in. Never mind I was a comfort plus passenger and traveled to the back of the plane to go to the bathroom. I know I can go up to first class because there are no rules to prohibit me but it followed the “air” rules and was the flight attendants were rude as if I was putting them out. I will always fly delta but get your crew in check. I’m a former flight attendant and the crew is not priviledged. They are hired and paid to do a service.
Delta
7.8
Good
8,653 reviews
Delta
7.8
Good
8,653 reviews

Crew

8.5

Food

7.2

Overall

7.8

Boarding

8.1

Comfort

7.8

Entertainment

7.8

Reviews

1 / 20
8.0
Excellent

Lesley,Aug 2023

LIH - SEA

It was a red eye flight . And after take off and the first service the flight attendants were no where to be found except in the galley. When I went to the bathroom, the entrance was blocked by a FA sitting and he basically exhaled loudly as he had to move his legs so I could get in. Never mind I was a comfort plus passenger and traveled to the back of the plane to go to the bathroom. I know I can go up to first class because there are no rules to prohibit me but it followed the “air” rules and was the flight attendants were rude as if I was putting them out. I will always fly delta but get your crew in check. I’m a former flight attendant and the crew is not priviledged. They are hired and paid to do a service.
United Airlines
7.4
Good
10,350 reviews
Delta
7.8
Good
8,653 reviews

Crew

8.5

Food

7.2

Overall

7.8

Boarding

8.1

Comfort

7.8

Entertainment

7.8

Reviews

1 / 20
8.0
Excellent

Lesley,Aug 2023

LIH - SEA

It was a red eye flight . And after take off and the first service the flight attendants were no where to be found except in the galley. When I went to the bathroom, the entrance was blocked by a FA sitting and he basically exhaled loudly as he had to move his legs so I could get in. Never mind I was a comfort plus passenger and traveled to the back of the plane to go to the bathroom. I know I can go up to first class because there are no rules to prohibit me but it followed the “air” rules and was the flight attendants were rude as if I was putting them out. I will always fly delta but get your crew in check. I’m a former flight attendant and the crew is not priviledged. They are hired and paid to do a service.

Related info for your journey

  • How long is the flight from Duluth to Seattle?

    A quick flight from Duluth to Seattle can take about 7h 57m. United Airlines provides one of the quickest options available for as low as $348. There are 1406 mi between Duluth and Seattle.

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

    Currently priced at $273, Delta will fly you from Duluth to Seattle and back. In addition to Delta, many other airlines offer competitively priced options for your trip. Check Cheapflights for deals on United Airlines for as low as $307.

  • Can I find deals for flights from Duluth to Seattle that include hotel bookings?

    Yes. In addition to deals on Duluth to Seattle flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Duluth to Seattle?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Duluth to Seattle.

  • Can I find deals for business class flights from Duluth to Seattle?

    Yes. Cheapflights offers flight deals from Duluth to Seattle by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
SeaTac
Renton
Tacoma
Lacey
Leavenworth
Olympia
Tukwila
Snoqualmie
Puyallup
Lynnwood
Centralia
Kent
Tumwater
Ocean Shores
Ellensburg
Issaquah
Lakewood
Poulsbo
Marysville
Shoreline

Browse thousands of different options on Cheapflights for your next trip

Top 2 airlines flying from Duluth to Seattle

AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$273Average$448FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$307Average$496FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
Site
©2026 Cheapflights