DLH - SEA

$258 Find Cheap Flights from Duluth to Seattle

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Duluth to Seattle departing on 9/4. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Seattle

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Duluth to Seattle, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Duluth to Seattle, as well as popular online travel agencies
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Flights Deals

Cheap Flights from Duluth to Seattle (DLH-SEA)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Duluth to Seattle that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Duluth to Seattle

Thu, Sep 4 - Tue, Sep 9
Delta Logo
5:10 am - 8:48 amDLH-SEA
5h 38m1 stop
Delta Logo
11:55 pm - 10:15 amSEA-DLH
8h 20m1 stop
$258Delta
Find Deal
Sun, Aug 31 - Tue, Sep 9
Delta Logo
5:10 am - 8:48 amDLH-SEA
5h 38m1 stop
Delta Logo
11:55 pm - 10:15 amSEA-DLH
8h 20m1 stop
$283Delta
Find Deal
Thu, Sep 4 - Wed, Sep 10
Delta Logo
5:10 am - 8:48 amDLH-SEA
5h 38m1 stop
Delta Logo
11:55 pm - 10:07 amSEA-DLH
8h 12m1 stop
$322Delta
Find Deal
Thu, Sep 4 - Fri, Sep 12
Delta Logo
5:10 am - 8:48 amDLH-SEA
5h 38m1 stop
Delta Logo
7:25 am - 10:02 amSEA-DLH
24h 37m2 stops
$327Delta
Find Deal
Wed, Sep 3 - Sun, Sep 7
Delta Logo
7:50 am - 10:14 pmDLH-SEA
16h 24m2 stops
Delta Logo
11:55 pm - 10:15 amSEA-DLH
8h 20m1 stop
$332Delta
Find Deal
Tue, Sep 2 - Tue, Sep 9
Delta Logo
7:50 am - 8:08 pmDLH-SEA
14h 18m2 stops
Delta Logo
11:55 pm - 10:15 amSEA-DLH
8h 20m1 stop
$337Delta
Find Deal
Sat, Aug 30 - Tue, Sep 9
United Airlines Logo
8:00 am - 8:42 pmDLH-SEA
14h 42m2 stops
United Airlines Logo
11:54 pm - 10:45 amSEA-DLH
8h 51m1 stop
$344United Airlines
Find Deal
Tue, Sep 2 - Mon, Sep 8
Delta Logo
5:10 am - 8:48 amDLH-SEA
5h 38m1 stop
Delta Logo
11:55 pm - 10:15 amSEA-DLH
8h 20m1 stop
$347Delta
Find Deal
Sat, Aug 30 - Tue, Sep 9
United Airlines Logo
8:00 am - 8:42 pmDLH-SEA
14h 42m2 stops
United Airlines Logo
5:35 pm - 10:45 amSEA-DLH
15h 10m2 stops
$349United Airlines
Find Deal
Sun, Aug 31 - Thu, Sep 11
Delta Logo
5:10 am - 8:48 amDLH-SEA
5h 38m1 stop
Delta Logo
9:25 am - 10:07 amSEA-DLH
22h 42m2 stops
$352Delta
Find Deal
Booking Insights

KAYAK's insights & trends for Duluth to Seattle flights

Get data-powered insights and trends into flights from Duluth to Seattle to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Duluth to Seattle?

What’s the cheapest day of the week to fly from Duluth to Seattle?

The average price of all round-trip flights from Duluth to Seattle clicked on KAYAK for each day over the last 12 months.

For Duluth to Seattle, Tuesday is the cheapest day to fly on average and Saturday is the most expensive. Flying from Seattle back to Duluth, the best deals are generally found on Wednesday, with Friday being the most expensive.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Duluth to Seattle, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Duluth to Seattle is September, where tickets cost $258 (return) on average. On the other hand, the most expensive months are December and August, where the average cost of round-trip tickets is $556 and $516 respectively.

Good to know

Low seasonJune
Cheapest flight$258
Best time to beat the crowds but there is an average 5% increase in price.
Most popular time to fly with an average 24% increase in price.
Flight from Duluth to Seattle

When to book flights from Duluth to Seattle

Are your dates flexible? Find out the best times to travel from Duluth to Seattle based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Duluth to Seattle

  • What is the cheapest flight from Duluth to Seattle?

    In the last 3 days, the lowest price for a flight from Duluth to Seattle was $538 for a one-way ticket and $258 for a round-trip.

  • Do I need a passport to fly between Duluth and Seattle?

    No, a passport isn't needed to fly from Duluth to Seattle. However, local authorities might ask for an official ID.

  • Which aircraft models fly most regularly from Duluth to Seattle?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Duluth to Seattle?

    SkyTeam, and Star Alliance are the airline alliances operating flights between Duluth and Seattle, with SkyTeam being the most commonly used for this route.

  • How does KAYAK find such low prices on flights from Duluth to Seattle?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Duluth to Seattle.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Duluth to Seattle?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Seattle from Duluth is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Duluth to Seattle?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Seattle with an airline and back to Duluth with another airline. Booking your flights between Duluth and SEA can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Duluth to Seattle?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Seattle from Duluth up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airlines flying from Duluth to Seattle

 
See real verified KAYAK customer reviews for airlines flying from Duluth to Seattle. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Duluth to Seattle? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
DeltaOverall score based on 7980 reviews
7.9Entertainment
7.3Food
8.5Crew
8.2Boarding
7.9Comfort
Airline reviews

Delayed and took off even later than the scheduled delay time

8.0 ExcellentAnonymous, Jul 2025DTW - SEA
Read more Delta reviews

Delayed and took off even later than the scheduled delay time

There was a security issue at the airport and we were unable to land. We circled endlessly and then landed at another airfield for fuel. We then circled the airport again, almost landed but didn’t fully touch down before circling again. I am thankful to the crew for keeping us safe- the issue was the airline and staff at the airport getting us seats on our connecting flights. That part was hours of searching for someone and getting in double my steps.

Boarding was organised and relaxed. Crew were fantastic! Seats were lacking padding causing butt pain and stiffness.

The flight was scheduled for 2:30 PM. Early in the morning we got a text message saying the flight was delayed and rescheduled for 3:00 PM. We got to the airport with that in mind. Then we got a message during check-in at the flight was rescheduled again for 2:30 PM. We almost missed our flight. In fact, our bags Were told that they would not make it. At the end, everything worked out. But it is very stressful.

Great overall. There was a bit of turbulence so they could only serve water because too much turbulence for the carts. Was glad they prioritized safety though

Food from the flight from Atlanta to Santiago was very poor..

Flight was delayed due to weather. Crew did a nice job of making us comfortable. No complain complaints.

The worst part was I was NOT allowed in the lounge even though I was holding a first class ticket and have a premium American Express card. I have flown Business or First Class with many airlines. Delta is the ONLY one who does not extend this courtesy to anyone except people who hold the very expensive American Express card. As a result, I won’t fly Delta if I have any other choice.

Thank you for not flipping the plane on the run way. You guys get a 5 star rating for the flight!!!

This was the second flight this week with flight attendant Marcus I’m not sure if his last name is Lane or Lang but this guy is awesome. He funny, attentive and his service is 5 stars. Marcus makes business travel more enjoyable !

The plane was freezing cold. Asked for a blanket and there were none. Was told twice that the pilots would warm the plane and it never happened Worst experience flying ever

Multiple delays because they screwed up on the crew schedule and had to wait for over an hour for more people to come.

It was good. Basic flight. Drinks only. Pay budget. Get budget and I’m good with that. I want to get where I need to go. Not hard to please. Female First Officer is an absolute bonus for me!

The Wi-Fi was off, the arm rests are hard plastic.

The assistance with the wheel chairs was fabulous. All the people were so very friendly and helpful. I want to thank them all.

We almost missed our return flight. We got to the gate one minute from closing the cabin door, and the agent got us aboard the plane! We are so very grateful!!!!!

I already filled out a survey for this flight. We booked through KAYAK with airfare assist, and airfare assist did not confirm or honor our flight. Therefore, we had to go to a different place with a different travel agency. I tried very hard with airfare assist, They also promoted this on cheapair.com, but it was a bait and switch in both instances.

Boarded flight, issues with the place and had to get off the plane, wait, and then board a different plane at a different gate. This impacted my short trip negatively. A worker died outside of the plane window and we sat there the entire time while they tried to revive him, unsuccessfully, which was traumatic.

The flight there was frustrating but the flight home was very good.

Flight was delayed in phoenix by 1 hour. When Kenny got to minneapolis st paul, Kenny missed his connecting flight to Duluth on Sun country air. Sun country customer service did nothing to help Kenny get home to Duluth. We will not fly with sun country ever again.

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

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