How long is the flight from Duluth to Seattle?

A quick flight from Duluth to Seattle can take about 6h 22m. Delta provides one of the quickest options available for as low as $328. There are 1406 mi between Duluth and Seattle.

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

Currently priced at $93, Sun Country Air will fly you from Duluth to Seattle and back. In addition to Sun Country Air, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Delta and United Airlines - these airlines can fly you to your destination from $258 and $258, respectively. Sun Country Air is 77% cheaper than the average price of flights available within the next 90 days to this destination.

In terms of precipitation, rainfall in Seattle ranges from 0.7 - 6.6 inches per month. November is typically the wettest month, when rainfall can reach 6.6 in. July is typically the driest time to visit Seattle when rainfall is around 0.7 in.

If weather is an important factor for your trip to Seattle, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 66.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 41.0 F).

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

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

What is the cheapest time of day to fly from DLH to SEA?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Duluth to Seattle as you normally would.

Most accurate provider : When it comes to deals on Duluth-Seattle flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Duluth-Seattle flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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.

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.

$144+ Flights from Duluth to Seattle

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Find flight deals from Duluth to Seattle

Cheapest flights from Duluth to Seattle
Explore the most affordable flight options available from Duluth to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 20, 2025.

Sat 12/612:01 pmDLH - SEA

1 stop6h 59mDelta

Wed 12/1011:15 pmSEA - DLH

2 stops22h 44mDelta

Deal found 11/17

$358

Thu 12/47:55 amDLH - SEA

2 stops12h 37mUnited Airlines

Mon 12/810:40 amSEA - DLH

1 stop9h 19mUnited Airlines

Deal found 11/19

$508

Wed 12/37:45 amDLH - SEA

1 stop7h 13mDelta

Sun 12/76:00 amSEA - DLH

1 stop7h 44mDelta

Deal found 11/18

$618

Wed 12/32:57 pmDLH - SEA

3 stops23h 21mUnited Airlines

Sun 12/711:59 pmSEA - DLH

2 stops20h 00mUnited Airlines

Deal found 11/18

$866

Best flights from Duluth to Seattle
Discover carefully curated flight deals from Duluth to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 20, 2025.

Thu 1/294:24 pmDLH - SEA

1 stop6h 22mDelta

Mon 2/23:35 pmSEA - DLH

1 stop6h 17mDelta

Deal found 11/19

$328

Thu 12/47:55 amDLH - SEA

2 stops12h 37mUnited Airlines

Mon 12/810:40 amSEA - DLH

1 stop9h 19mUnited Airlines

Deal found 11/19

$508

Thu 2/54:24 pmDLH - SEA

1 stop6h 22mDelta

Mon 2/96:05 amSEA - DLH

1 stop7h 39mDelta

Deal found 11/20

$338

Sat 12/612:01 pmDLH - SEA

1 stop6h 59mDelta

Wed 12/1011:15 pmSEA - DLH

2 stops22h 44mDelta

Deal found 11/17

$358

Thu 12/412:01 pmDLH - SEA

1 stop6h 59mDelta

Mon 12/86:00 amSEA - DLH

1 stop7h 44mDelta

Deal found 11/19

$358

Thu 2/57:40 amDLH - SEA

1 stop10h 21mUnited Airlines

Mon 2/98:10 amSEA - DLH

2 stops11h 49mUnited Airlines

Deal found 11/20

$512

Last-minute flights from Duluth to Seattle
Discover last-minute flight deals from Duluth to Seattle. Data last updated November 20, 2025 and is based on user searches.

Wed 12/37:45 amDLH - SEA

1 stop7h 13mDelta

Sun 12/76:00 amSEA - DLH

1 stop7h 44mDelta

Deal found 11/18

$618

Wed 12/32:57 pmDLH - SEA

3 stops23h 21mUnited Airlines

Sun 12/711:59 pmSEA - DLH

2 stops20h 00mUnited Airlines

Deal found 11/18

$866

Thu 12/47:55 amDLH - SEA

2 stops12h 37mUnited Airlines

Mon 12/810:40 amSEA - DLH

1 stop9h 19mUnited Airlines

Deal found 11/19

$508

Sat 12/612:01 pmDLH - SEA

1 stop6h 59mDelta

Wed 12/1011:15 pmSEA - DLH

2 stops22h 44mDelta

Deal found 11/17

$358

One-way flights from Duluth to Seattle
Search for one-way flight options from Duluth to Seattle. Find affordable one-way fares based on user searches. Data last updated November 20, 2025.

Sat 12/135:00 amDLH - SEA

1 stop7h 54mDelta

Deal found 11/18

$144

Sat 12/132:57 pmDLH - SEA

2 stops11h 53mUnited Airlines

Deal found 11/18

$179

Thu 12/254:10 pmDLH - SEA

1 stop6h 35mDelta

Deal found 11/19

$244

Tue 12/235:00 amDLH - SEA

1 stop7h 45mDelta

Deal found 11/19

$324

Mon 12/224:10 pmDLH - SEA

1 stop25h 41mDelta

Deal found 11/19

$342

Wed 12/243:03 pmDLH - SEA

2 stops20h 52mUnited Airlines

Deal found 11/19

$367

Fri 12/264:10 pmDLH - SEA

1 stop9h 21mDelta

Deal found 11/19

$432

Thu 12/253:03 pmDLH - SEA

2 stops10h 09mUnited Airlines

Deal found 11/19

$439

Sat 12/275:00 amDLH - SEA

1 stop20h 31mDelta

Deal found 11/19

$542

Cheap flight deals from Duluth to Seattle

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$328 (Delta)
One-way from	$144 (Delta)
Popular in	August
Cheapest in	September
Average price	$441

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

One-way flight from Duluth Intl to Seattle/Tacoma Intl

Search Deals

Highest demand for flights based on searches. 0% potential increase in price ($2 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($13 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in November 2025

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

DuluthSeattle

DLH - SEA

DLHSEA

Duluth Intl

Thu 1/29

4:24 pm-8:46 pm

1 stop6h 22m

Seattle/Tacoma Intl

Mon 2/2

3:35 pm-11:52 pm

1 stop6h 17m

$328

DuluthSeattle

DLH - SEA

DLHSEA

Duluth Intl

Thu 2/5

4:24 pm-8:46 pm

1 stop6h 22m

Seattle/Tacoma Intl

Mon 2/9

6:05 am-3:44 pm

1 stop7h 39m

$338

DuluthSeattle

DLH - SEA

DLHSEA

Duluth Intl

Sat 12/6

12:01 pm-5:00 pm

1 stop6h 59m

Seattle/Tacoma Intl

Wed 12/10

11:15 pm-11:59 pm

2 stops22h 44m

$358

DuluthSeattle

DLH - SEA

DLHSEA

Duluth Intl

Thu 12/4

12:01 pm-5:00 pm

1 stop6h 59m

Seattle/Tacoma Intl

Mon 12/8

6:00 am-3:44 pm

1 stop7h 44m

$358

DuluthSeattle

DLH - SEA

DLHSEA

Duluth Intl

Thu 12/4

7:55 am-6:32 pm

2 stops12h 37m

Seattle/Tacoma Intl

Mon 12/8

10:40 am-9:59 pm

1 stop9h 19m

$508

DuluthSeattle

DLH - SEA

DLHSEA

Duluth Intl

Thu 2/5

7:40 am-4:01 pm

1 stop10h 21m

Seattle/Tacoma Intl

Mon 2/9

8:10 am-9:59 pm

2 stops11h 49m

$512

DuluthSeattle

DLH - SEA

DLHSEA

Duluth Intl

Sat 12/13

5:00 am-10:54 am

1 stop7h 54m

$144

DuluthSeattle

DLH - SEA

DLHSEA

Duluth Intl

Sat 12/13

2:57 pm-12:50 am

2 stops11h 53m

$179

DuluthSeattle

DLH - SEA

DLHSEA

Duluth Intl

Tue 12/23

5:00 am-10:45 am

1 stop7h 45m

$324

DuluthSeattle

DLH - SEA

DLHSEA

Duluth Intl

Mon 12/22

4:10 pm-3:51 pm

1 stop25h 41m

$342

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/18

Showing 1-10 of 15 results

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 November.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy2 stars	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*1 star
eDreams	Price Accuracy3 stars	Trust 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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Duluth-Seattle flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Duluth to Seattle

What is the cheapest month to book a flight from Duluth to Seattle?

Currently, May is the cheapest month in which you can book a flight from Duluth to Seattle (average of $119). Flying from Duluth to Seattle in June is currently the most expensive (average of $409). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing Seattle

Read reviews from past customers who have flown Delta, United Airlines, and Sun Country Air 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

7.9

Good

8,002 reviews

Reviews

1 / 20

8.0

Excellent

Rona,Feb 2024

MSP - DEN

It was a good experience other than a short delay.

Delta

7.9

Good

8,002 reviews

Delta

7.9

Good

8,002 reviews

Reviews

1 / 20

8.0

Excellent

Rona,Feb 2024

MSP - DEN

It was a good experience other than a short delay.

United Airlines

7.4

Good

9,029 reviews

Delta

7.9

Good

8,002 reviews

Reviews

1 / 20

8.0

Excellent

Rona,Feb 2024

MSP - DEN

It was a good experience other than a short delay.

Sun Country Air

6.9

Okay

334 reviews

Delta

7.9

Good

8,002 reviews

Reviews

1 / 20

8.0

Excellent

Rona,Feb 2024

MSP - DEN

It was a good experience other than a short delay.

Related info for your journey

How long is the flight from Duluth to Seattle?
A quick flight from Duluth to Seattle can take about 6h 22m. Delta provides one of the quickest options available for as low as $328. There are 1406 mi between Duluth and Seattle.
What are the cheapest airlines flying from Duluth to Seattle round-trip?
Currently priced at $93, Sun Country Air will fly you from Duluth to Seattle and back. In addition to Sun Country Air, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Delta and United Airlines - these airlines can fly you to your destination from $258 and $258, respectively. Sun Country Air is 77% cheaper than the average price of flights available within the next 90 days to this destination.
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.
What is the cheapest month to book a flight from Duluth to Seattle?
Currently, May is the cheapest month in which you can book a flight from Duluth to Seattle (average of $119). Flying from Duluth to Seattle in June is currently the most expensive (average of $409). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Other flights to Seattle

Top 3 airlines flying from Duluth to Seattle

Airline	Cheapest	Average	Flexibility	On-time
Sun Country Air	Cheapest$93	Average$221	FlexibilityNo cancel fee	On-time83%
United Airlines	Cheapest$258	Average$411	FlexibilityNo cancel fee	On-time69%
Delta	Cheapest$258	Average$401	FlexibilityNo cancel fee	On-timeN/A

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$144+ Cheap flights from Duluth to Seattle (DLH - SEA)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/13. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Duluth to Seattle with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Find flight deals from Duluth to Seattle

Cheapest flights from Duluth to SeattleExplore the most affordable flight options available from Duluth to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 20, 2025.

Explore the most affordable flight options available from Duluth to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 20, 2025.

Cheap flight deals from Duluth to Seattle

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

Use the filters below to find and compare flights from Duluth to Seattle that are best for you.

Compare providers for flights from Duluth to Seattle

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Duluth to Seattle in November.

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.

Cheapflights Insights

Everything you need to know about your flight from Duluth to Seattle

What is the cheapest month to book a flight from Duluth to Seattle?

Reviews of airlines servicing Seattle

Read reviews from past customers who have flown Delta, United Airlines, and Sun Country Air 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.

Related info for your journey

Find useful and relevant information for your journey from Duluth to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

How long is the flight from Duluth to Seattle?

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

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

How can I find direct flights from Duluth to Seattle?

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

What is the cheapest month to book a flight from Duluth to Seattle?

Traveling to a place near Seattle?

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Duluth to Seattle

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Top 3 airlines flying from Duluth to Seattle

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Cheapest flights from Duluth to Seattle
Explore the most affordable flight options available from Duluth to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 20, 2025.