SEA - DLH

$278 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 1/8. 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
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Everything you should know

Cheapest round-trip
$278
Overall average: $308
Delta
Thu 1/8Wed 1/21
SEA - DLH • 1 stop
Cheapest one-way
Multiple Airlines
Tue 12/16
SEA - DLH • multi-stop
Top airlines
Delta
Cheapest • from $278 (round-trip)
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to travel
March
Cheapest • 38% 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

Thu, Jan 8 - Wed, Jan 21
Delta Logo
6:05 am - 3:44 pm
SEA
-
DLH
7h 39m1 stop
Delta Logo
4:24 pm - 8:46 pm
DLH
-
SEA
6h 22m1 stop
$278Delta
Thu, Jan 8 - Wed, Jan 21
United Airlines Logo
10:58 am - 9:59 pm
SEA
-
DLH
9h 01m1 stop
United Airlines Logo
3:05 pm - 12:59 am
DLH
-
SEA
11h 54m2 stops
$398United Airlines
Thu, Jan 8 - Wed, Jan 21
United Airlines Logo
8:10 am - 9:59 pm
SEA
-
DLH
11h 49m2 stops
United Airlines Logo
3:05 pm - 12:59 am
DLH
-
SEA
11h 54m2 stops
$403United Airlines
Tue, Jan 6 - Sat, Jan 10
United Airlines Logo
11:45 pm - 2:30 pm
SEA
-
DLH
12h 45m2 stops
United Airlines Logo
3:05 pm - 11:32 am
DLH
-
SEA
22h 27m1 stop
$432United Airlines
Tue, Jan 6 - Sat, Jan 10
United Airlines Logo
11:45 pm - 2:30 pm
SEA
-
DLH
12h 45m2 stops
United Airlines Logo
3:05 pm - 9:55 am
DLH
-
SEA
20h 50m2 stops
$437United Airlines
Tue, Jan 6 - Sat, Jan 10
United Airlines Logo
11:45 pm - 2:30 pm
SEA
-
DLH
12h 45m2 stops
United Airlines Logo
3:05 pm - 11:32 am
DLH
-
SEA
22h 27m1 stop
$447United Airlines
Tue, Jan 6 - Sat, Jan 10
United Airlines Logo
11:00 am - 9:59 pm
SEA
-
DLH
8h 59m1 stop
United Airlines Logo
3:05 pm - 11:32 am
DLH
-
SEA
22h 27m1 stop
$461United Airlines
Tue, Jan 6 - Sat, Jan 10
United Airlines Logo
2:10 pm - 2:30 pm
SEA
-
DLH
22h 20m1 stop
United Airlines Logo
3:05 pm - 11:32 am
DLH
-
SEA
22h 27m1 stop
$495United Airlines
Tue, Jan 6 - Sat, Jan 10
United Airlines Logo
2:10 pm - 2:30 pm
SEA
-
DLH
22h 20m1 stop
United Airlines Logo
3:05 pm - 11:32 am
DLH
-
SEA
22h 27m1 stop
$510United Airlines
Thu, Jan 8 - Wed, Jan 21
United Airlines Logo
8:10 am - 9:59 pm
SEA
-
DLH
35h 49m3 stops
United Airlines Logo
3:05 pm - 12:59 am
DLH
-
SEA
11h 54m2 stops
$511United 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’s the cheapest day of the week to fly from Seattle to Duluth?

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

When flying from Seattle to Duluth, you should consider leaving on a Wednesday and avoid Fridays if you are looking for the best rates. For your return to Seattle, you’ll find the best rates on Tuesdays and the most expensive ones on Saturdays.

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 $295 (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$278
Best time to beat the crowds with an average 32% drop in price.
Most popular time to fly and prices are also 15% 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 $278 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 $473 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 8010 reviews
7.9Comfort
7.9Entertainment
7.3Food
8.1Boarding
8.5Crew
Airline reviews

Good seats in Main cabin, excellent service and excellent landing

10.0 ExcellentAnonymous, Dec 2025
SEA - MSP
Read more Delta reviews

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

Mechanic delay in addition to a 2 hour change in takeoff time was frustrating.

Food was surprisingly good but the WiFi was not great

Easy boarding with an extremely kind attendant. Seats were spacious and we had 3 seats for 2 people so we could stretch out. Comfortable air flow and very attentive and hospital attendants. Bathrooms and food were the only negative. Bathrooms were so small you could hardly get in and close the door. I don’t think an obese person would fit or a person with a movement disability. Food was the trending food for flights, nonexistent. We spent $40 getting sandwich and snack at airport for our 6 hour flught.

No one fussed at me about my pap machine as a 3rd pice on the plane. Boarding was pleasant and smooth. The boarding agent in Anchorage was a fun character- he could be in a movie. :~) The on-board crew were downright pleasant. No militant attitudes on Delta. Like all planes these days the seats are too narrow for standard Americans and at 5’2” there is barely enough leg room. I don’t know how tall people fold themselves into the seats. But that’s nothing specific to Delta

Excellent flight, the planes were newer, they did a nice job with boarding, great service overall.

Flight was delayed long enough that I was misding my connecting flight. The agents could not get me on a comparable flight, nor could they get me s Main Cabin seat I had paid for, nor could they get me on a comparable connecting flight. The gate agent would not issue meal vouchers, even though I was delayed over six hours! I had to spend over an hour and 15 minutes with customer service on the phone to See if they could get me on a better flight and get a meal voucher. Customer service was not helpful enough in trying to find alternate flights and it Ended up taking me 24 hours for a 12 hour trip!! Delta does not provide upgrades NOR will they even give you a pass for a few hours to their lounge. They claim that they do not issue daily passes to their lounge anymore. I call BS since this would be no extra cost to them to provide excellent customer service and give you a few hours to relax in comfort when you’re sitting in a crowded airport and your flight has been screwed up for that many hours.

The flight was on time. I generally don’t drink or eat on short flights and the seats were good and the flight attendants were friendly. That’s all I expect

It was nice to have gotten up upgraded to first class with a meal on a three hour flight

United have really come back. Airport and boarding process is clear and good, app and information also very good

Flight was delayed 8 times. We were sitting at the airport for 14 hours. We got 2 hours of sleep (if that) on what was not meant to be a red-eye.

After a delay at the gate, C3, at Ohare on Sunday, I left my Blk ski coat on the bench at the gate, lost! Please review my lob claim, thx.

Very bad! They kept delaying my flight and wouldn’t do anything about it

They brought an empty plane to the gate. Then a flight delay was announced for maintenance and waiting on a part. I was then put on a flight to San Francisco instead with a connecting flight to my final destination. Arrived at my final destination 2 hours late.

The only downside was my cell phone charger wouldn’t work in the charging port but everyone else’s would work in them all. My cell phone cable works fine in my hotel room in Frankfurt.

Flight team stood out for perzonal attention, kindness at bright cheery attitudes at 8am. Very helpful.

Ot was overall fine. Left on time and had basic snacks. Weather was finicky but that’s not the airlines fault.

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

Information on your arrival and departure airports