£198 Cheap Flights from Des Moines (DSM) to Seattle (SEA)

View £198 flight on Tue, 16 Jun 2026Opens in a new window

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Popular airlines from Des Moines International Airport (DSM) to Seattle-Tacoma International Airport (SEA)

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Cheap Flights from Des Moines (DSM) to Seattle (SEA)

Prices were available within the past 7 days and start at £198 for one-way flights and £396 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Tue, 16 Jun - Tue, 23 Jun
DSM
Des Moines
SEA
Seattle
£396 Return, found 6 days ago
£396
Return
found 6 days ago
Select Alaska Airlines flight, departing Tue, 16 Jun from Des Moines to Seattle, returning Tue, 23 Jun, priced at £396 found 6 days ago
Alaska Airlines
Sun, 21 Jun - Sun, 28 Jun
DSM
Des Moines
SEA
Seattle
£412 Return, found 2 days ago
£412
Return
found 2 days ago
Select Alaska Airlines flight, departing Sun, 21 Jun from Des Moines to Seattle, returning Sun, 28 Jun, priced at £412 found 2 days ago
Alaska Airlines
Tue, 16 Jun - Tue, 23 Jun
DSM
Des Moines
SEA
Seattle
£427 Return, found 6 days ago
£427
Return
found 6 days ago
Select Alaska Airlines flight, departing Tue, 16 Jun from Des Moines to Seattle, returning Tue, 23 Jun, priced at £427 found 6 days ago
Alaska Airlines
Tue, 16 Jun - Tue, 23 Jun
DSM
Des Moines
SEA
Seattle
£442 Return, found 6 days ago
£442
Return
found 6 days ago
Select Alaska Airlines flight, departing Tue, 16 Jun from Des Moines to Seattle, returning Tue, 23 Jun, priced at £442 found 6 days ago
Alaska Airlines
Sun, 21 Jun - Sun, 28 Jun
DSM
Des Moines
SEA
Seattle
£458 Return, found 2 days ago
£458
Return
found 2 days ago
Select Alaska Airlines flight, departing Sun, 21 Jun from Des Moines to Seattle, returning Sun, 28 Jun, priced at £458 found 2 days ago
Alaska Airlines
Thu, 18 Jun - Thu, 25 Jun
DSM
Des Moines
SEA
Seattle
£471 Return, found 4 days ago
£471
Return
found 4 days ago
Select Alaska Airlines flight, departing Thu, 18 Jun from Des Moines to Seattle, returning Thu, 25 Jun, priced at £471 found 4 days ago
Alaska Airlines
Thu, 18 Jun - Thu, 25 Jun
DSM
Des Moines
SEA
Seattle
£472 Return, found 4 days ago
£472
Return
found 4 days ago
Select Alaska Airlines flight, departing Thu, 18 Jun from Des Moines to Seattle, returning Thu, 25 Jun, priced at £472 found 4 days ago
Alaska Airlines
Tue, 16 Jun - Tue, 23 Jun
DSM
Des Moines
SEA
Seattle
£473 Return, found 6 days ago
£473
Return
found 6 days ago
Select Alaska Airlines flight, departing Tue, 16 Jun from Des Moines to Seattle, returning Tue, 23 Jun, priced at £473 found 6 days ago
Alaska Airlines
Tue, 16 Jun - Tue, 23 Jun
DSM
Des Moines
SEA
Seattle
£486 Return, found 6 days ago
£486
Return
found 6 days ago
Select Alaska Airlines flight, departing Tue, 16 Jun from Des Moines to Seattle, returning Tue, 23 Jun, priced at £486 found 6 days ago
Alaska Airlines
Sun, 21 Jun - Sun, 28 Jun
DSM
Des Moines
SEA
Seattle
£499 Return, found 2 days ago
£499
Return
found 2 days ago
Select Alaska Airlines flight, departing Sun, 21 Jun from Des Moines to Seattle, returning Sun, 28 Jun, priced at £499 found 2 days ago

Frequently asked questions

What is the cheapest month to fly from Des Moines, IA (DSM-Des Moines Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
January is typically the cheapest month to fly from Des Moines, IA (DSM-Des Moines Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.), with average return fares of approximately £273. This is about 18% lower than the average price throughout the year. January sees lower prices because it falls after the holiday travel rush, when demand drops and airlines compete for bookings. Other cheap months to fly from Des Moines, IA (DSM-Des Moines Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) include September and October.*Averages based on flights available on Expedia in the last year.
How do I find cheap flights from Des Moines, IA (DSM-Des Moines Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
To find a cheap flight from Des Moines, IA (DSM-Des Moines 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 Des Moines, IA (DSM-Des Moines Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
Based on booking data from the past year, the cheapest months to fly from Des Moines International Airport (DSM) to Seattle - Tacoma International Airport (SEA) are typically January and October. You can expect average return flight prices around £273 during these times. While these months offer great value, they might not always align with the most popular travel periods, so consider what's most important for your trip.*Prices based on flights available on Expedia in the last year.
How many flights per day from Des Moines, IA (DSM-Des Moines Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
There are approximately 47 connecting flights per day from Des Moines Intl. (DSM) to Seattle - Tacoma Intl. (SEA). Some common connection points include O'Hare Intl. (ORD), Denver Intl. (DEN), and Minneapolis - St. Paul Intl. (MSP).
What is the earliest flight from Des Moines, IA (DSM-Des Moines Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
The earliest flight from Des Moines, IA (DSM-Des Moines Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) typically departs at approximately 5:00 AM local time, operated by American Airlines. This is a seasonal service active in March and April. An early departure like this can help maximise 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 Des Moines, IA (DSM-Des Moines Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
You'll typically find the most flights from Des Moines Intl. (DSM) to Seattle - Tacoma Intl. (SEA) on a Sunday, with around 44 flights available. This gives you plenty of options for your travel plans. Major airlines on this route include American Airlines, United Airlines, and Alaska Airlines. Flight schedules are consistent throughout the week.
What are the most popular departure times for flights from Des Moines, IA (DSM-Des Moines Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
The most popular departure times for flights from Des Moines, IA (DSM-Des Moines Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) are in the afternoon, from 12pm to 3pm. About 21% of passengers prefer this time. Many major carriers, including American Airlines, United Airlines and Delta Air Lines, offer flights during this window. This timing works well because it allows you to have a productive morning before heading to the airport, and you'll arrive in Seattle with plenty of time to settle in.
How long does it take to fly from Des Moines, IA (DSM-Des Moines Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
Flying from DSM to SEA with a connection usually takes about 9 hours 50 minutes, traveling roughly 1,461 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 Des Moines, IA (DSM-Des Moines Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
Select the "Business class" and "First class" filters when looking for DSM 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 Des Moines, IA (DSM-Des Moines Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) flight with Expedia?
It's easy to earn miles on a Des Moines, IA (DSM-Des Moines 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 Des Moines Intl. (DSM)?
From Des Moines Intl. (DSM), you can fly into Seattle - Tacoma Intl. (SEA) to reach Seattle. Some flights may connect through major hubs like Denver Intl. (DEN), O'Hare Intl. (ORD), Harry Reid Intl. (LAS) 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 Des Moines, IA (DSM-Des Moines Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) at the last minute?
Typically, booking a last minute flight from Des Moines, IA (DSM-Des Moines 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 Des Moines, IA (DSM-Des Moines Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) flight and hotel package?
Securing a Des Moines, IA (DSM-Des Moines 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 Des Moines, IA (DSM-Des Moines Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.)?
If you booked your Des Moines, IA (DSM-Des Moines 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
Des Moines Intl.
Destination airport
Seattle - Tacoma Intl.
Return price
£396
Distance
2337 km

Book with confidence

Compare flights from Des Moines to Seattle easily and book with confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from Des Moines to Seattle. Operating between them flights per day, 20 airlines cover the route. And fly direct, getting you to Seattle - Tacoma Intl. in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Des Moines Intl. to Seattle - Tacoma Intl..  

To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights. 

Grab a great deal on your flight from Des Moines Intl. (DSM) to Seattle - Tacoma Intl. (SEA)

The easiest way to view the best deals on flights from Des Moines to Seattle today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from Des Moines Intl. to Seattle - Tacoma Intl. start at just £396 and range up to £499.  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near Des Moines and Seattle
  • booking your flight during June, the cheapest month on this route
  • varying your flight times – early morning and late at night are sometimes cheaper 

Why you should book your Des Moines to Seattle flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Des Moines Intl. to Seattle - Tacoma Intl. for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.  

Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.  

Compare flights from Des Moines to Seattle easily and book with confidence

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*Available to Expedia members.