How long is the flight from Duluth to Seattle?

A quick flight from Duluth to Seattle can take about 6h 09m. Delta provides one of the quickest options available for as low as $351. There are 1406 mi between Duluth and Seattle. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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.

$204+ Flights from Duluth to Seattle

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Cheap 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 December 27, 2025.

Mon 12/293:03 pmDLH - SEA

1 stop9h 44mUnited Airlines

Wed 12/3111:15 pmSEA - DLH

2 stops13h 13mUnited Airlines

Deal found 12/25

$1,268

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 December 27, 2025.

Fri 4/244:30 pmDLH - SEA

1 stop6h 09mDelta

Tue 4/286:00 amSEA - DLH

1 stop12h 01mDelta

Deal found 12/27

$351

Wed 4/223:08 pmDLH - SEA

1 stop9h 29mUnited Airlines

Mon 4/2711:59 pmSEA - DLH

1 stop8h 30mUnited Airlines

Deal found 12/27

$358

Fri 4/2411:19 amDLH - SEA

1 stop9h 41mUnited Airlines

Mon 4/2711:59 pmSEA - DLH

1 stop8h 30mUnited Airlines

Deal found 12/27

$358

Wed 4/223:08 pmDLH - SEA

1 stop9h 29mUnited Airlines

Tue 4/2811:59 pmSEA - DLH

1 stop8h 30mUnited Airlines

Deal found 12/27

$358

Thu 4/2311:19 amDLH - SEA

1 stop9h 41mUnited Airlines

Tue 4/2811:59 pmSEA - DLH

1 stop8h 30mUnited Airlines

Deal found 12/27

$358

Thu 4/2311:19 amDLH - SEA

1 stop9h 41mUnited Airlines

Mon 4/2711:59 pmSEA - DLH

1 stop8h 30mUnited Airlines

Deal found 12/27

$358

Fri 4/2411:19 amDLH - SEA

1 stop9h 41mUnited Airlines

Tue 4/287:37 pmSEA - DLH

2 stops12h 52mUnited Airlines

Deal found 12/27

$364

Last-minute flights from Duluth to Seattle
Discover last-minute flight deals from Duluth to Seattle. Data last updated December 27, 2025 and is based on user searches.

Mon 12/293:03 pmDLH - SEA

1 stop9h 44mUnited Airlines

Wed 12/3111:15 pmSEA - DLH

2 stops13h 13mUnited Airlines

Deal found 12/25

$1,268

Thu 1/83:05 pmDLH - SEA

1 stop9h 38mUnited Airlines

Thu 1/1510:58 amSEA - DLH

1 stop9h 01mUnited Airlines

Deal found 12/25

$492

Fri 1/97:40 amDLH - SEA

1 stop10h 21mUnited Airlines

Tue 1/1311:45 pmSEA - DLH

2 stops12h 45mUnited Airlines

Deal found 12/25

$414

Fri 1/233:05 pmDLH - SEA

1 stop9h 38mUnited Airlines

Tue 1/2711:45 pmSEA - DLH

2 stops12h 45mUnited Airlines

Deal found 12/26

$483

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 December 27, 2025.

Sat 3/144:32 pmDLH - SEA

1 stop6h 16mDelta

Deal found 12/27

$204

Sat 3/143:07 pmDLH - SEA

2 stops33h 52mUnited Airlines

Deal found 12/27

$335

Tue 1/64:24 pmDLH - SEA

1 stop6h 22mDelta

Deal found 12/26

$448

Tue 1/63:05 pmDLH - SEA

2 stops24h 52mUnited Airlines

Deal found 12/26

$522

Find flight deals from Duluth to Seattle

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$414 (United Airlines)
One-way from	$204 (Delta)
Popular in	August
Cheapest in	September
Average price	$273

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. 3% potential price decrease ($13 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in December 2025

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

DuluthSeattle

DLH - SEA

DLHSEA

Duluth Intl

Fri 4/24

4:30 pm-8:39 pm

1 stop6h 09m

Seattle/Tacoma Intl

Tue 4/28

6:00 am-8:01 pm

1 stop12h 01m

$351

DuluthSeattle

DLH - SEA

DLHSEA

Duluth Intl

Wed 4/22

3:08 pm-10:37 pm

1 stop9h 29m

Seattle/Tacoma Intl

Mon 4/27

11:59 pm-10:29 am

1 stop8h 30m

$358

DuluthSeattle

DLH - SEA

DLHSEA

Duluth Intl

Fri 4/24

11:19 am-7:00 pm

1 stop9h 41m

Seattle/Tacoma Intl

Mon 4/27

11:59 pm-10:29 am

1 stop8h 30m

$358

DuluthSeattle

DLH - SEA

DLHSEA

Duluth Intl

Wed 4/22

3:08 pm-10:37 pm

1 stop9h 29m

Seattle/Tacoma Intl

Tue 4/28

11:59 pm-10:29 am

1 stop8h 30m

$358

DuluthSeattle

DLH - SEA

DLHSEA

Duluth Intl

Thu 4/23

11:19 am-7:00 pm

1 stop9h 41m

Seattle/Tacoma Intl

Tue 4/28

11:59 pm-10:29 am

1 stop8h 30m

$358

DuluthSeattle

DLH - SEA

DLHSEA

Duluth Intl

Thu 4/23

11:19 am-7:00 pm

1 stop9h 41m

Seattle/Tacoma Intl

Mon 4/27

11:59 pm-10:29 am

1 stop8h 30m

$358

DuluthSeattle

DLH - SEA

DLHSEA

Duluth Intl

Fri 4/24

11:19 am-7:00 pm

1 stop9h 41m

Seattle/Tacoma Intl

Tue 4/28

7:37 pm-10:29 am

2 stops12h 52m

$364

DuluthSeattle

DLH - SEA

DLHSEA

Duluth Intl

Sat 3/14

4:32 pm-8:48 pm

1 stop6h 16m

$204

DuluthSeattle

DLH - SEA

DLHSEA

Duluth Intl

Sat 3/14

3:07 pm-10:59 pm

2 stops33h 52m

$335

DuluthSeattle

DLH - SEA

DLHSEA

Duluth Intl

Tue 1/6

4:24 pm-8:46 pm

1 stop6h 22m

$448

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/27

Showing 1-10 of 11 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 December.

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 $118). Flying from Duluth to Seattle in February is currently the most expensive (average of $500). 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

8,022 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

8,022 reviews

Delta

7.9

Good

8,022 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

9,117 reviews

Delta

7.9

Good

8,022 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

335 reviews

Delta

7.9

Good

8,022 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 09m. Delta provides one of the quickest options available for as low as $351. There are 1406 mi between Duluth and Seattle. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.
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 $118). Flying from Duluth to Seattle in February is currently the most expensive (average of $500). 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.

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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$449	FlexibilityNo cancel fee	On-timeN/A

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$204+ 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 3/14. 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

Cheap 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 December 27, 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 December 27, 2025.

Find 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 December.

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?

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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 December 27, 2025.