DLH - SEA

$248 Find Cheap Flights from Duluth to Seattle

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Duluth to Seattle departing on 7/9. 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 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
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
$393
Delta
Sat 5/16Sat 5/23
DLH - SEA • 1 stop
Cheapest one-way
$248
United Airlines
Thu 7/9
DLH - SEA • 1 stop
Top airlines
Cheapest • from $393 (round-trip)
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
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Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Duluth and Seattle. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $386 (round-trip)
Shortest trip • 6h 51m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 100% price drop
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 Seattle!
Flight Deals
Booking Insights
Flight 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

Sat, May 16 - Sat, May 23
Delta Logo
4:30 pm - 8:43 pm
DLH
-
SEA
6h 13m
1 stop
Delta Logo
6:00 am - 3:48 pm
SEA
-
DLH
7h 48m
1 stop
$393Delta
Wed, Sep 9 - Mon, Sep 21
Delta Logo
5:10 am - 8:50 am
DLH
-
SEA
5h 40m
1 stop
Delta Logo
6:05 am - 3:19 pm
SEA
-
DLH
7h 14m
1 stop
$458Delta
Fri, Aug 7 - Sat, Aug 15
United Airlines Logo
6:25 pm - 12:14 am
DLH
-
SEA
7h 49m
1 stop
United Airlines Logo
6:51 pm - 10:30 am
SEA
-
DLH
13h 39m
2 stops
$464United Airlines
Wed, Sep 9 - Mon, Sep 21
Delta Logo
5:10 am - 8:50 am
DLH
-
SEA
5h 40m
1 stop
Delta Logo
6:05 am - 3:19 pm
SEA
-
DLH
7h 14m
1 stop
$468Delta
Wed, Sep 9 - Mon, Sep 21
United Airlines Logo
5:00 am - 11:17 am
DLH
-
SEA
8h 17m
1 stop
United Airlines Logo
11:10 pm - 5:32 pm
SEA
-
DLH
16h 22m
2 stops
$493United Airlines
Wed, Sep 9 - Mon, Sep 21
United Airlines Logo
5:00 am - 2:22 pm
DLH
-
SEA
11h 22m
2 stops
United Airlines Logo
11:10 pm - 5:32 pm
SEA
-
DLH
16h 22m
2 stops
$498United Airlines
Thu, Aug 6 - Sat, Aug 15
United Airlines Logo
6:25 pm - 12:14 am
DLH
-
SEA
7h 49m
1 stop
United Airlines Logo
6:51 pm - 10:30 am
SEA
-
DLH
13h 39m
2 stops
$499United Airlines
Tue, May 26 - Sat, May 30
United Airlines Logo
5:00 am - 11:38 am
DLH
-
SEA
8h 38m
1 stop
United Airlines Logo
10:52 am - 9:46 pm
SEA
-
DLH
8h 54m
1 stop
$505United Airlines
Sat, May 16 - Sat, May 23
United Airlines Logo
6:04 am - 11:39 am
DLH
-
SEA
7h 35m
1 stop
United Airlines Logo
7:05 pm - 10:43 am
SEA
-
DLH
13h 38m
2 stops
$509United Airlines
Sat, May 16 - Sat, May 23
United Airlines Logo
6:04 am - 8:53 pm
DLH
-
SEA
16h 49m
2 stops
United Airlines Logo
5:06 pm - 10:43 am
SEA
-
DLH
15h 37m
2 stops
$543United Airlines
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.

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 February, where tickets cost $0 (return) on average. On the other hand, the most expensive months are August and May, where the average cost of round-trip tickets is $648 and $469 respectively.

Good to know

Low seasonSeptember
Cheapest flight$248
Best time to beat the crowds with an average 37% drop in price.
Most popular time to fly and prices are also 37% lower on average.
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 $248 for a one-way ticket and $393 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?

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

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

    The two airlines most popular with KAYAK users for flights from Duluth to Seattle are Delta and United Airlines. With an average price for the route of $396 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 $410 and an overall rating of 7.4.

  • 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.
7.9
DeltaOverall score based on 8465 reviews
8.1Boarding
8.5Crew
7.8Entertainment
7.9Comfort
7.2Food
Airline reviews

The only thing I would say is we tried to get on a standby earlier flight, but with our fair we couldn’t. That seems senseless to leave with open seats..

10.0 ExcellentJill, Apr 2026
MSP - LAS
Read more Delta reviews

The only thing I would say is we tried to get on a standby earlier flight, but with our fair we couldn’t. That seems senseless to leave with open seats..

Flight was delayed, we could have been notified earlier and in a consistent manner. App was not refreshing for another passenger to get the latest flight status. We could have stayed and waited at the hotel instead of waiting at the airport had we known the flight was going to delayed for more than 5 hours. The toilet is too tight, and needs to be cleaned more frequently (every hour). The entertainment screen froze, the touch screen not responding to touch. We were upgraded to comfort, it is more comfortable than regular economy seats.

My tray was broken so i had no place to work or eat except my lap. Flight attendant said I would get an email with some credit or miles, it was a complete waste of time as I could only function at about 20% of normal. I have not received anything yet.

I was told that they needed to check my bag at the gate and to pick it up at the gate in Richmond. No big deal. I know they can't control the weather, but we flew around RIC for 45 minutes to avoid the storm and were 25 minutes late leaving as well. Once we landed, we were told to go to baggage claim to pick up our luggage. I went to bathroom, paid for parking, and went to the assigned baggage claim location. United flight people came down with us as well. They got their luggage immediately. Next, South West people came down about 10 minutes later. They got their luggage next. We finally got our luggage around 30 minutes in waiting. Was not a wonderful experience. No reflection on Delta, but the ground crew was lousy at best.

It was fine. 55 minute flight. No snacks or beverage service offered. Boarding went smoothly and my walker was waiting for me on the jet way.

As previously noted, this flight was great: departure was timely, the crew was friendly and attentive, and wifi connectivity was seamless. In particular, I appreciated that the flight attendant just told me to stow the laptop right before takeoff/landing, and trusted me to do so (which I did!).

My flight was cencaled due with the bad weather on Sunday the crew was poorly mistaken my luggage supposed depart with my flight instead I didn’t have my luggage for almost 3 days the website is poorly respond to my complain until I have someone to do it my connection smooth their not even respon or email me even the have my luggage

8 hours late and the plane smelled like urine, that smell in the morning when your child wet the bed in the night.

Everything was good except wifi and a leaking drink chiller. The floor was all wet and my bag was soaked. Did not notice until debarking. Have not heard back from Delta. Even though this was leg one of an international flight in first class, they denied access to their Sky Club - very disappointing!

Prior to takeoff, the pilot told us there was a possibility of not being able to land and going to Portland. Well that happened, we took off and then did 8 loops around Spokane before the pilot told us we ran out of fuel and had to go to Portland. So for a 35 minute flight we have now been on the plane for 3 hours (boarded at 6:50 am and landed in Portland at 10:30). Then, we just sat in Portland's airport with no updates of when we can start heading back. All of a sudden, our pilots and crew just left, leaving us stranded in a different city and state. We continued to sit in Portland until we finally got a new crew assigned and boarded the plane (This was from 10:30-2). We then sat on the plane for an additional hour before take off because they had to count us multiple times. We finally landed in Spokane at 3:55 PM. So a flight that should have taken at max an hour took us 10 hours and we missed the majority of the recruiting event we went for.

Booked through Kayak Business, had a seat in middle and towards back due to booking rate, not comfortable.

Was great in general, try to respect time and excuses when slight changes have been made, appreciated!

A long delay. Don't travel late in the day.

Super friendly with lots of drink options an entertainment. Friendly crew.

Standard flight with a drinks and a snack- overall very quick flight. The flight attendants were very strict, bordered on rude.

Outstanding service, efficient & friendly crew, flight was safe, comfortable & on time

Delayed - weather wasn't bad at either end. Also sat on tarmac in ORD.

They told us yesterday APR21st that they were cleaning the plane and we got delayed. After that they said they didn't had any crew for the flight so they cancelled the flight till next day.

The crew was great. Very friendly and responsive. The plane was old, small and tight. We ran out of overhead space and I had to check. Middle seat was particularly tight.

The flight crew on this leg of my trip was very friendly and pleasant. Every one of them was humorous, as well as helpful and accommodating. This group was BY FAR the best crew I’ve flown with. They deserve kudos.

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

Information on your arrival and departure airports