SEA - DLH

$306 Find Cheap Flights from Seattle to Duluth

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Seattle to Duluth departing on 2/24. 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, 0 bags

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

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Duluth, 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 Seattle to Duluth, as well as popular online travel agencies
Travelers love KAYAK
41.299.237 searches in the past 7 days on KAYAK

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Everything you should know

Cheapest round-trip
$306
Overall average: $406
Delta
Tue 2/24Tue 3/3
SEA - DLH • 1 stop
Cheapest one-way
Multiple Airlines
Wed 1/28
SEA - DLH • multi-stop
Top airlines
United Airlines
Cheapest • from $307 (round-trip)
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to travel
March
Cheapest • 36% price drop
February
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Duluth!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Seattle to Duluth (SEA-DLH)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Seattle to Duluth 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 Seattle to Duluth

Tue, Feb 24 - Tue, Mar 3
Delta Logo
6:10 am - 3:31 pm
SEA
-
DLH
7h 21m
1 stop
Delta Logo
4:15 pm - 8:46 pm
DLH
-
SEA
6h 31m
1 stop
$306Delta
Tue, Feb 24 - Tue, Mar 3
Delta Logo
6:10 am - 3:31 pm
SEA
-
DLH
7h 21m
1 stop
Delta Logo
4:15 pm - 8:46 pm
DLH
-
SEA
6h 31m
1 stop
$312Delta
Thu, Feb 19 - Tue, Feb 24
United Airlines Logo
11:59 pm - 10:43 am
SEA
-
DLH
8h 44m
1 stop
United Airlines Logo
11:20 am - 7:03 pm
DLH
-
SEA
9h 43m
1 stop
$313United Airlines
Fri, Feb 27 - Tue, Mar 3
Delta Logo
3:30 pm - 11:55 pm
SEA
-
DLH
6h 25m
1 stop
Delta Logo
4:15 pm - 8:46 pm
DLH
-
SEA
6h 31m
1 stop
$316Delta
Fri, Feb 27 - Tue, Mar 3
Delta Logo
6:10 am - 3:31 pm
SEA
-
DLH
7h 21m
1 stop
Delta Logo
4:15 pm - 8:46 pm
DLH
-
SEA
6h 31m
1 stop
$327Delta
Wed, Feb 25 - Wed, Mar 4
United Airlines Logo
11:59 pm - 10:43 am
SEA
-
DLH
8h 44m
1 stop
United Airlines Logo
11:20 am - 10:13 pm
DLH
-
SEA
12h 53m
2 stops
$331United Airlines
Fri, Mar 6 - Sat, Mar 14
United Airlines Logo
11:59 pm - 10:43 am
SEA
-
DLH
8h 44m
1 stop
United Airlines Logo
3:07 pm - 10:45 pm
DLH
-
SEA
9h 38m
1 stop
$353United Airlines
Tue, Feb 24 - Tue, Mar 3
United Airlines Logo
7:29 pm - 10:43 am
SEA
-
DLH
13h 14m
2 stops
United Airlines Logo
3:19 pm - 10:43 pm
DLH
-
SEA
9h 24m
1 stop
$378United Airlines
Tue, Feb 24 - Tue, Mar 3
United Airlines Logo
7:29 pm - 10:43 am
SEA
-
DLH
13h 14m
2 stops
United Airlines Logo
3:19 pm - 10:43 pm
DLH
-
SEA
9h 24m
1 stop
$386United Airlines
Fri, Mar 6 - Sat, Mar 14
United Airlines Logo
5:20 pm - 10:43 am
SEA
-
DLH
15h 23m
2 stops
United Airlines Logo
3:07 pm - 10:45 pm
DLH
-
SEA
9h 38m
1 stop
$392United Airlines
Booking Insights

KAYAK's insights & trends for Seattle to Duluth flights

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

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Seattle to Duluth, 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 Seattle to Duluth is March, where tickets cost $306 (return) on average. On the other hand, the most expensive months are May and April, where the average cost of round-trip tickets is $728 and $687 respectively.

Good to know

Low seasonNovember
Cheapest flight$306
Best time to beat the crowds with an average 32% drop in price.
Most popular time to fly and prices are also 16% lower on average.
Flight from Seattle to Duluth

When to book flights from Seattle to Duluth

Are your dates flexible? Find out the best times to travel from Seattle to Duluth 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 Seattle to Duluth

  • What is the cheapest flight from Seattle to Duluth?

    In the last 3 days, the lowest price for a flight from Seattle to Duluth was $307 for a round-trip ticket.

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

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

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

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

  • Which airline alliances offer flights from Seattle to Duluth?

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

  • Which is the best airline for flights from Seattle to Duluth, Delta or United Airlines?

    The two airlines most popular with KAYAK users for flights from Seattle to Duluth are Delta and United Airlines. With an average price for the route of $554 and an overall rating of 7.9, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $398 and an overall rating of 7.4.

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

    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 Seattle to Duluth.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Duluth from Seattle 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 Seattle to Duluth?

    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 Duluth with an airline and back to Seattle with another airline. Booking your flights between Seattle and DLH 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 Seattle to Duluth?

    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 Duluth from Seattle 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 Seattle to Duluth

 
See real verified KAYAK customer reviews for airlines flying from Seattle to Duluth. 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 Seattle to Duluth? 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.
7.9
DeltaOverall score based on 8124 reviews
7.2Food
7.8Entertainment
7.9Comfort
8.5Crew
8.1Boarding
Airline reviews

was sitting in the jet bridge for 10 minutes in -20 degree weather waiting for my bag

2.0 MediocreAndrea, Jan 2026
CMH - MSP
Read more Delta reviews

was sitting in the jet bridge for 10 minutes in -20 degree weather waiting for my bag

Probably not the fault of Delta but there was delay after delay after delay and I ended up getting home 4 hours later then I should have at 1:30 in the morning

Departure was delayed resulting in me missing my connection. Delta did not autimatically find me another flight.

A 12 hour flight during the day with one real meal service - are you kidding? Also the breakfast was one of the worst and not what was listed

The gate attendants and the crew were terrible. Because of high winds, they needed to carry more fuel, so they had to get volunteers to take the next flight at 6 am the next day. They did a terrible job of it - our flight ended up taking off just under 3 hours of the scheduled time. I hope to never fly Delta again.

Did not realize internet screen was hidden between seats and no info printed!!!!

Good seats in Main cabin, excellent service and excellent landing

Our flight from SFO to MSP was right on time on 11/15/2025. No delays. As we approached MSP at about 8 pm, we circled in the air until 8:40 pm so I don't call that efficient for MSP. I think the captain should announce the delay and why. (as if we all don't know that we are just circling around the area, slowing down, speeding up, slowing down.) Thank you. Marilyn Fischer

On time flight. Seat comfort could be better in the Comfort section.

The staff and the boarding procedure were all amazing . The one flight was not equipped with WIFI which now adays seems odd. All in all the experience was good

In overall it was a good experience, the only down point was that the entertainment screen was working properly.

HORRIBLE, my initial flight was cancelled, they made me pay $200 extra dollars and that got cancelled as well! After 6 cancellations I decided to get a refund because I needed to get home to my babies. Out of $1000+ dollars they offered me only $40 in refund! Totally unacceptable! The flight that they cancelled I was able to fly it on another airline. I had to spend $400 on one way tickets just to get home! I’m still getting the runaround.

First class ticket gets you a choice of chips or nuts. . Just like economy Southwest. Also no screen in the seats. This is first class???!

Seated dude next to me even though lots of empty rows. But main thing was we sat on the tarmac after landing for 30 minutes because of, in the words of the dude who sat next to me, “operational incompetence”. We got changing directions about where to pick up gate checked bags. Pilot and flight attendant were awesome though.

It was a pretty standard flight... until the almost hour and a half spent on the taxi way. I get that the weather has been poor but the delay had nothing to do with the weather and more to do with a plane with several issues tying up the gate. I get that that happens from time to time but this has been EVERY flight I've been on for the past 5 years and I fly 3 to 5 times a year. This isn't just United... it's American, it's Delta. It's an issue with the entire industry. I work for UPS and packages on a cargo plane get better service than people do these days. Anymore I HATE flying.

Flight arrived 30 min early and bag was waiting at the baggage pickup. United Club HNL was one of the nicest in the system

Unfortunately weather delayed our flight waiting for our plane to arrive and due to a little snow time was needed to deice the plane so departure was very delayed and I missed the connecting flight

Very good. Because of the delays with my previous flight, I missed my connection, but I was able to book another flight through the United app easily.

I wish there were outlets to charge my iPhone. The crew was great; we had a female pilot who was great with explaining what was happening and delays,

The flight crew where really good. Better then the crew from BNE to SFO

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

Information on your arrival and departure airports