Find flights
Deals
Insights
When to book
FAQs & Tips
Airlines

DLH - SEA

$346 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 10/11. 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
0 bags
Fri 6/21
Fri 6/28

Search 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
In the last 7 days travelers have searched 43,423,329 times on KAYAK, and here is why:

Save 21% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Bundle and saveSave money when you bundle your flight + hotel.

Cheap flight deals 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 and deals for you by selecting your travel dates.
Choose your dates
2:45 pm - 8:10 pmDLH-SEA
7h 25m1 stop
12:35 am - 9:49 amSEA-DLH
7h 14m1 stop
$346Delta
Find Deal
Fri, Oct 11 - Mon, Oct 14
3:07 pm - 6:41 pmDLH-SEA
29h 34m1 stop
6:45 am - 10:00 pmSEA-DLH
13h 15m2 stops
$457United Airlines
Find Deal
Fri, Oct 11 - Tue, Oct 15
6:24 pm - 9:48 amDLH-SEA
17h 24m1 stop
6:45 pm - 2:25 pmSEA-DLH
17h 40m2 stops
$486United Airlines
Find Deal
Fri, Aug 23 - Fri, Aug 30
8:00 am - 10:22 pmDLH-SEA
16h 22m2 stops
6:45 am - 10:00 pmSEA-DLH
13h 15m2 stops
$492United Airlines
Find Deal
Fri, Oct 11 - Tue, Oct 15
10:57 am - 10:25 pmDLH-SEA
13h 28m2 stops
6:00 am - 2:12 pmSEA-DLH
6h 12m1 stop
$496Delta
Find Deal
Thu, Jul 4 - Tue, Jul 9
11:14 am - 9:48 amDLH-SEA
24h 34m1 stop
5:00 pm - 10:39 amSEA-DLH
15h 39m1 stop
$502United Airlines
Find Deal
Fri, Aug 23 - Fri, Aug 30
10:57 am - 10:25 pmDLH-SEA
13h 28m2 stops
6:21 pm - 10:17 amSEA-DLH
13h 56m2 stops
$505Delta
Find Deal
Thu, Jul 4 - Mon, Jul 8
5:20 am - 8:48 amDLH-SEA
5h 28m1 stop
6:00 am - 2:12 pmSEA-DLH
6h 12m1 stop
$506Delta
Find Deal
Mon, Jul 1 - Tue, Jul 9
3:13 pm - 8:02 amDLH-SEA
18h 49m2 stops
7:00 am - 9:37 pmSEA-DLH
12h 37m1 stop
$511United Airlines
Find Deal
Tue, Jul 2 - Tue, Jul 9
5:20 am - 8:48 amDLH-SEA
5h 28m1 stop
9:00 am - 10:17 amSEA-DLH
23h 17m2 stops
$516Delta
Find Deal
Mon, Jul 1 - Mon, Jul 8

Flights from Duluth to Seattle - Travel Insights & Trends

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

The average price of all flights from Duluth to Seattle clicked on KAYAK for each day over the last 12 months.
When flying from Duluth to Seattle, you should consider leaving on a Tuesday and avoid Saturdays if you are looking for the best rates. For your return to Duluth, you’ll find the best rates on Mondays and the most expensive ones on Fridays.

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 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 May, where tickets cost $274 on average. On the other hand, the most expensive months are June and October, where the average cost of tickets is $937 and $892 respectively.

Which airlines provide the cheapest flights from Duluth to Seattle?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the last 72 hours, the best return deals on flights connecting Duluth to Seattle were found on Delta ($346) and United Airlines ($457). United Airlines proposed the cheapest one-way flight at $351.

Good to know

Low season

February

High season

July

Cheapest flight

$346
Best time to beat the crowds with an average 40% drop in price.
Most popular time to fly and prices are also 0% 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 $351 for a one-way ticket and $346 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 SkyTeam 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 $526 and an overall rating of 8.0, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $692 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.

See more FAQs

Top 3 airlines serving 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 10585 reviews
8.6Crew
7.4Food
8.0Entertainment
8.2Boarding
7.9Comfort
Airline reviews

Delta crushed it. Flight attendant in first was attentive and just never stopped. Honestly one of the best domestic flights I’ve been on.

10.0 ExcellentDonald, May 2024FLL - SEA
Read more about Delta reviews

Delta crushed it. Flight attendant in first was attentive and just never stopped. Honestly one of the best domestic flights I’ve been on.

Delta is one of the best airlines I have flown

It was a Red-Eye flight so was not comfortable enough to sleep, but seat was as expected. Crew was great and in-flight entertainment was excellent. Flight was smooth

Standard economy seats on Deltas 767 were better than Alaska premium seats on their 737 MAX9; more legroom, wider seats. Entertainment was great, no ipad or phone required. Could have included a meal service.

Plane was turned around due to fog half way into the flight, Delta did not properly direct passengers to stay on same flight and instead failed to properly rebook on Alaska

The boarding process was terrible especially with an indirect flight Chicago to Seattle to San Diego was terrible talking about we overbooked a flight idk if I’d take this airline ever again we got off our flight from Chicago to Seattle and we traveled for business and they told us our connecting flight was over booked and their was no seats asking people to take a delayed next flight and they don’t tell anyone coughing to wear masks seats 30A-B were terrible during the flight no one wants to sit next to people coughing all around I don’t want to be sick traveling for work or get sick anytime it’s very upsetting the staff doesn’t take this stuff serious to tell them to wear masks when they see people coughing and sneezing

Flight was on time, the crew was personable & professional, & the plane arrived early which was nice.

This flight landed early, but deplaned late. We were stuck sitting and waiting for a gate for over an hour

My flight was very clean and the location was comfortable. The service was great. A satisfying flight!

I appreciated being upgraded. I was very disappointed with my 13 hr layover in Seattle to geg, while my friends who flew Alaska made it home as scheduled. I had to reserve a hotel on my dime.

Fantastic. Smooth boarding with an infant. Never experienced it with any other carriers.

This was a Lufthansa flight, not United. The CSA at the counter, Ashley, was not only incompetent, but quite rude. Me and two other PAX waited over 7 minutes standing in front of her and another CSA and they ignored us. We joked that we must have accidently taken invisibility pills. She could have at least said "I'll be with you in a moment, I'm currently....". I could go on about how rude she and the other CSAs were (whispering, not communicating with me, blaming the situation on others, etc.). She would not work for me. Then, she gave me literally the worst seat on the plane. the worst. My seat kept getting bumped (rammed twice by the crew with their carts and about every 5 minutes by someone using the bathroom), listening to the bathroom all night, crowded seat, etc.

My seat was broken. WiFi didn’t work. Gate crew at HOU were rude and condescending. Treated all the passengers badly. Bad experience, United.

First flight of the day… MINIMUM FUEL! 15 minute landing delay at HOU due to fog turned into a 2+ hour delay! Rather than circle, they had to divert to another city to refuel! Sat on tarmac at Austin to refuel. We ALL missed our connections! The crew, including pilots, were clueless. Crew was really a mess. At HOU, Untied employees were exceedingly rude to all. It was pitiful.

An hour and a half late is UNACCEPTABLE. The negative impact to our family is unconscionable. And for the price we were forced to pay...

No lounge access with “United First” ticket. False alarm about late flight, jeopardizing connection. Wrong meal. Loose power socket would not hold plug, could not charge device. In-flight access to text messaging did not work. Toilet seat on plane would not stay up.

We ended up with seats in the very back. So they did not recline. Have no idea why, we reserved and checked in very early. The isles were very narrow and the seats had very little leg room. But they did give us water, and a snack.

Check in etc was very good. As for on the plane, it was like flying in a freezer. It was so cold, i have flown for years and never been so cold on a plane. Staff on board said its always cold when flying which is a load of rubbish. They wouldnt put any heating on and now i have the flu because of this .

I’ve had a couple flights this week on United that were delayed by an hour or more

Surprisingly easy! I was hesitant to try this, but the cost swayed me. I actually felt like I had less stress than all the taxiing and possible delays that occur with short regional flights where you spend less time in the air than getting to and from the plane..

They were flexible and let my daughter and I sit in the back of the plane.

A flight attendant appeared to not be in a good mood that served us; felt she was being short. Overhead announcements were very loud compared to other airlines and the message was not friendly and was a little confusing. This flight was particularly over all was not satisfying compared to previous Sun Country flights.

Airlines should have to add their fees to their fares

I am upset with the hidden fees for bringing on an overhead carryon onto flight and also having to pay for my seat selection. This should all be part of the original price of the ticket. Very poor customer service

Sun country Wi-Fi was not working. Flight was overbooked by two people. Had to pay extra for carryons day before flight and I don’t like hidden fees like that.

WiFi did not work. Woman flight attendant in the rear of the plane was moody.

Flight delayed over 3 hrs due to unexplained issue. No text message to notify.

Well we did not realize at first it was a ground transfer, but we really enjoyed it and would definitely recommend to friends and family. Our driver was awesome and the ride was wonderful. A bathroom on board would have been nice, but at least we were warned that there wasn't one so we went ahead of time.

We were on a fairly long flight and they offered nothing for a snack (unless you paid) and then quickly gave you a drink and were never to be seen again. I would have loved a refill on my water but that was not an option. The flight attendants were standing on ther phone when we boarded and left and never even greeted us. Any other flight I have been on they would have welcomed us on the plane and again greeted us as we got off. Our landline transfer from MSP to Rochester on the other hand was FANTASTIC! We would highly recommend!

Took forever to get the plane loaded and unloaded. Longest I have ever had. I was in the middle of the plane and it almost took a hour after landing to get off of the plane.

Book cheap flights from Duluth to Seattle

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Duluth to Seattle found on KAYAK in the last 72 hours.
5/28Tue
2 stopsUnited Airlines
22h 40mDLH-SEA
$351
5/28Tue
1 stopDelta
5h 14mDLH-SEA
$478
5/28Tue
3 stopsUnited Airlines
32h 58mDLH-SEA
$502

Search by stops

Search by airline

Search by price

Duluth - Seattle Flights

Departure:

Duluth (undefined)United States

Destination:

Seattle (SEA)United States

Return flight deals:

Seattle - Duluth

Cabin classes: