CA $189 Cheap Flights from Duluth (DLH) to Seattle (SEA)

View CA $189 flight on Mon, Aug 24, 2026Opens in a new window

Popular airlines from Duluth, MN (DLH-Duluth Intl.) to Seattle-Tacoma International Airport (SEA)

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Cheap flights from Duluth (DLH) to Seattle (SEA)

Prices were available within the past 7 days and start at CA $189 for one-way flights and CA $484 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Sun Country Airlines
Mon, Jun 1 - Fri, Aug 28
DLH
Duluth
SEA
Seattle
CA $484 Roundtrip, found 3 days ago
CA $484
Roundtrip
found 3 days ago
Select Sun Country Airlines flight, departing Mon, Jun 1 from Duluth to Seattle, returning Fri, Aug 28, priced at CA $484 found 3 days ago
United
Wed, Jul 22 - Wed, Jul 29
DLH
Duluth
SEA
Seattle
CA $650 Roundtrip, found 6 days ago
CA $650
Roundtrip
found 6 days ago
Select United flight, departing Wed, Jul 22 from Duluth to Seattle, returning Wed, Jul 29, priced at CA $650 found 6 days ago
United
Tue, Jul 21 - Wed, Jul 29
DLH
Duluth
SEA
Seattle
CA $692 Roundtrip, found 6 days ago
CA $692
Roundtrip
found 6 days ago
Select United flight, departing Tue, Jul 21 from Duluth to Seattle, returning Wed, Jul 29, priced at CA $692 found 6 days ago
Sun Country Airlines
Fri, Jul 24 - Mon, Jul 27
DLH
Duluth
SEA
Seattle
CA $706 Roundtrip, found 6 days ago
CA $706
Roundtrip
found 6 days ago
Select Sun Country Airlines flight, departing Fri, Jul 24 from Duluth to Seattle, returning Mon, Jul 27, priced at CA $706 found 6 days ago
Delta
Tue, Jul 21 - Tue, Jul 28
DLH
Duluth
SEA
Seattle
CA $717 Roundtrip, found 6 days ago
CA $717
Roundtrip
found 6 days ago
Select Delta flight, departing Tue, Jul 21 from Duluth to Seattle, returning Tue, Jul 28, priced at CA $717 found 6 days ago
United
Thu, Jul 23 - Wed, Jul 29
DLH
Duluth
SEA
Seattle
CA $745 Roundtrip, found 6 days ago
CA $745
Roundtrip
found 6 days ago
Select United flight, departing Thu, Jul 23 from Duluth to Seattle, returning Wed, Jul 29, priced at CA $745 found 6 days ago
Delta
Mon, Jun 1 - Fri, Aug 28
DLH
Duluth
SEA
Seattle
CA $766 Roundtrip, found 3 days ago
CA $766
Roundtrip
found 3 days ago
Select Delta flight, departing Mon, Jun 1 from Duluth to Seattle, returning Fri, Aug 28, priced at CA $766 found 3 days ago
Delta
Wed, Jul 22 - Tue, Jul 28
DLH
Duluth
SEA
Seattle
CA $779 Roundtrip, found 6 days ago
CA $779
Roundtrip
found 6 days ago
Select Delta flight, departing Wed, Jul 22 from Duluth to Seattle, returning Tue, Jul 28, priced at CA $779 found 6 days ago
United
Wed, Jul 22 - Fri, Jul 24
DLH
Duluth
SEA
Seattle
CA $791 Roundtrip, found 6 days ago
CA $791
Roundtrip
found 6 days ago
Select United flight, departing Wed, Jul 22 from Duluth to Seattle, returning Fri, Jul 24, priced at CA $791 found 6 days ago
Delta
Mon, Jun 1 - Fri, Aug 28
DLH
Duluth
SEA
Seattle
CA $797 Roundtrip, found 3 days ago
CA $797
Roundtrip
found 3 days ago
Select Delta flight, departing Mon, Jun 1 from Duluth to Seattle, returning Fri, Aug 28, priced at CA $797 found 3 days ago

Frequently asked questions

What is the cheapest month to fly from Duluth, MN (DLH-Duluth Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
October is typically the cheapest month to fly from Duluth, MN (DLH-Duluth Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.), with average round-trip fares around 819 CAD. This is about 35% lower than the average price throughout the year. October often sees lower prices as the peak summer travel season has ended, and holiday travel has not yet begun, leading to reduced demand. January and December are also good months to find deals on this route.
How do I find cheap flights from Duluth, MN (DLH-Duluth Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
To find a cheap flight from Duluth, MN (DLH-Duluth Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Duluth, MN (DLH-Duluth Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
Based on booking data from the past year, if you're looking for the best time to fly from Duluth, MN (DLH-Duluth Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.), you'll find the cheapest flights in October or December, with average prices around 819 CAD for a round-trip. August is the most popular month to travel, meaning there are plenty of flight options available, but prices might be higher. If you prioritize savings, aim for the autumn or winter months.
How many flights per day from Duluth, MN (DLH-Duluth Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
There are approximately 17 connecting flights per day from Duluth International (DLH) to Seattle - Tacoma International (SEA). Some common connection points include O'Hare International (ORD) and Minneapolis - St. Paul International (MSP).
What is the earliest flight from Duluth, MN (DLH-Duluth Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
The earliest flight from Duluth, MN (DLH-Duluth Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) typically departs at approximately 5:00 AM local time, operated by Delta. This is a seasonal service active in February. An early departure like this can help you maximize your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Duluth, MN (DLH-Duluth Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
You'll typically find the most flights from Duluth Intl. (DLH) to Seattle - Tacoma Intl. (SEA) on a Sunday, with around 8 flights available. This gives you a good selection for your travel plans. Major airlines on this route include Delta Air Lines, United Airlines, and Sun Country Airlines.
What are the most popular departure times for flights from Duluth, MN (DLH-Duluth Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
The most popular departure times for flights from Duluth, MN (DLH-Duluth Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) are in the early morning, from 6am to 9am. About 26% of passengers prefer this time. Many major carriers, including United Airlines and Delta Air Lines, offer flights during this window. This timing works well because it allows you to get an early start on your travel day and arrive at your destination with plenty of time left.
How long does it take to fly from Duluth, MN (DLH-Duluth Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
Flying from DLH to SEA with a connection usually takes about 6 hours 20 minutes, traveling roughly 1,407 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Duluth, MN (DLH-Duluth Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
Select the "Business class" and "First class" filters when looking for DLH to SEA flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How do I earn miles on a Duluth, MN (DLH-Duluth Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) flight with Expedia?
It's easy to earn miles on a Duluth, MN (DLH-Duluth Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia. *Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Seattle from Duluth Intl. (DLH)?
From Duluth Intl. (DLH), you can fly directly into Seattle - Tacoma Intl. (SEA) to reach Seattle. Some flights may connect through major hubs like O'Hare Intl. (ORD), Minneapolis - St. Paul Intl. (MSP) before reaching Seattle. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Duluth, MN (DLH-Duluth Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) at the last minute?
Typically, booking a last minute flight from Duluth, MN (DLH-Duluth Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Duluth, MN (DLH-Duluth Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) flight and hotel package?
Securing a Duluth, MN (DLH-Duluth Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Duluth, MN (DLH-Duluth Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
If you booked your Duluth, MN (DLH-Duluth Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Duluth Intl.
Destination airport
Seattle - Tacoma Intl.
Roundtrip price
CA $484
Distance
2251 km

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Duluth to Seattle Flights

The easy way to book your flights from Duluth to Seattle 

With Expedia, it’s simple to find and book flights to Seattle from Duluth whether you’re traveling for business or pleasure. Enter your travel dates, hit search, and choose your flight from 20 airlines that cover this route. There are nonstop flights to Seattle - Tacoma Intl., too.  

Choose your preferred carrier and cabin class with the advanced search tool and select your ideal departure time. Then, if you want, you can see just nonstop or refundable flights. And if you’re traveling last minute, just enter the date to check out flights from Duluth to Seattle today, tomorrow, or this week.  

 

Save dollars with cheap flights from Duluth Intl., DLH to Seattle - Tacoma Intl., SEA 

Sort your search results by price to find great deals on your flight from Duluth to Seattle—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to Seattle from Duluth currently is just CA $484 rising to CA $797.  

Here are more money-saving tips: 

  • Fly in June when flight prices are normally at their lowest 
  • Book about a month to 6 weeks before you travel for the best prices to Seattle  
  • Avoid peak season and weekends when flights can cost more
  • Early morning and late-night flights are sometimes cheaper, so try varying your travel times 
  • One surefire way to save money on your flight is to book your flight and hotel together with Expedia. Sometimes, the savings are so large that the flight is basically free! 

 

Reasons to choose Expedia for your flight to Seattle from Duluth 

Whatever your destination, budget, or reason to travel, in just one quick search, you can choose from loads of flights, airlines, and cabin classes. The filters make it quick and easy to find your ideal flights, and if you choose one of the flexible options, you won’t be charged to change your flight. So book your flight to Seattle with Expedia today.

Duluth to Seattle Flights

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