$125 Cheap Flights from Seattle (SEA) to Des Moines (DSM)

View $125 flight on Wed, Aug 26, 2026Opens in a new window

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

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

Prices were available within the past 7 days and start at $125 for one-way flights and $328 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Sat, Apr 11 - Wed, Apr 15
SEA
Seattle
DSM
Des Moines
$328 Roundtrip, found 5 days ago
$328
Roundtrip
found 5 days ago
Select American Airlines flight, departing Sat, Apr 11 from Seattle to Des Moines, returning Wed, Apr 15, priced at $328 found 5 days ago
American Airlines
Sat, Apr 11 - Wed, Apr 15
SEA
Seattle
DSM
Des Moines
$329 Roundtrip, found 5 days ago
$329
Roundtrip
found 5 days ago
Select American Airlines flight, departing Sat, Apr 11 from Seattle to Des Moines, returning Wed, Apr 15, priced at $329 found 5 days ago
Southwest Airlines
Sat, Apr 25 - Tue, Apr 28
SEA
Seattle
DSM
Des Moines
$335 Roundtrip, found 5 days ago
$335
Roundtrip
found 5 days ago
Select Southwest Airlines flight, departing Sat, Apr 25 from Seattle to Des Moines, returning Tue, Apr 28, priced at $335 found 5 days ago
Southwest Airlines
Tue, Apr 21 - Tue, Apr 28
SEA
Seattle
DSM
Des Moines
$338 Roundtrip, found 4 days ago
$338
Roundtrip
found 4 days ago
Select Southwest Airlines flight, departing Tue, Apr 21 from Seattle to Des Moines, returning Tue, Apr 28, priced at $338 found 4 days ago
American Airlines
Sat, Apr 11 - Wed, Apr 15
SEA
Seattle
DSM
Des Moines
$339 Roundtrip, found 5 days ago
$339
Roundtrip
found 5 days ago
Select American Airlines flight, departing Sat, Apr 11 from Seattle to Des Moines, returning Wed, Apr 15, priced at $339 found 5 days ago
American Airlines
Wed, May 20 - Wed, May 27
SEA
Seattle
DSM
Des Moines
$351 Roundtrip, found 3 days ago
$351
Roundtrip
found 3 days ago
Select American Airlines flight, departing Wed, May 20 from Seattle to Des Moines, returning Wed, May 27, priced at $351 found 3 days ago
United
Wed, May 20 - Wed, May 27
SEA
Seattle
DSM
Des Moines
$351 Roundtrip, found 3 days ago
$351
Roundtrip
found 3 days ago
Select United flight, departing Wed, May 20 from Seattle to Des Moines, returning Wed, May 27, priced at $351 found 3 days ago
Southwest Airlines
Wed, Jun 3 - Tue, Jun 9
SEA
Seattle
DSM
Des Moines
$361 Roundtrip, found 4 days ago
$361
Roundtrip
found 4 days ago
Select Southwest Airlines flight, departing Wed, Jun 3 from Seattle to Des Moines, returning Tue, Jun 9, priced at $361 found 4 days ago
Delta
Wed, Apr 29 - Sat, May 2
SEA
Seattle
DSM
Des Moines
$428 Roundtrip, just found
$428
Roundtrip
just found
Select Delta flight, departing Wed, Apr 29 from Seattle to Des Moines, returning Sat, May 2, priced at $428 just found
Alaska Airlines
Sun, Apr 26 - Wed, Apr 29
SEA
Seattle
DSM
Des Moines
$478 Roundtrip, found 4 days ago
$478
Roundtrip
found 4 days ago
Select Alaska Airlines flight, departing Sun, Apr 26 from Seattle to Des Moines, returning Wed, Apr 29, priced at $478 found 4 days ago

Alternative airports near Des Moines

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Des Moines Intl. DSM. Cheapest and Closest option available. Average driving time to city center is 10 minutes. Flights from $567
DSM
Des Moines Intl.
CheapestClosest
Average driving time to city center10 min
Flights from $567

Find the cheapest month to fly from Seattle (SEA) to Des Moines (DSM)

September is typically the cheapest month to fly

From $166 - $498 per traveler.

Frequently asked questions

How much does a flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Des Moines, IA (DSM-Des Moines Intl.) cost?
You can find cheap one-way flights from $125 and cheap return flights from $328 Seattle, WA (SEA-Seattle - Tacoma Intl.) to Des Moines, IA (DSM-Des Moines Intl.) with Expedia. One-way flights generally range between $188 and $950, and roundtrip flights usually range from $392 to $1482. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Seattle, WA (SEA-Seattle - Tacoma Intl.) to Des Moines, IA (DSM-Des Moines Intl.) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Des Moines, IA (DSM-Des Moines Intl.)?
September is the cheapest month to fly from Seattle, WA (SEA) to Des Moines, IA (DSM), with average round-trip fares around $392. This is about 17% lower than the average price throughout the year, likely due to a decrease in travel after the summer peak season. Other cheap months to fly from SEA to DSM include January and October.*Averages based on flights available on Expedia in the last year.
Which airlines fly direct from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Des Moines, IA (DSM-Des Moines Intl.)?
Enter SEA to DSM and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
What is the cheapest airline that flies from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Des Moines, IA (DSM-Des Moines Intl.)?
Frontier Airlines is one of the cheapest airlines offering connecting flights from Seattle, WA (SEA) to Des Moines, IA (DSM), with round-trip tickets starting from around $166. You can find great options for your travel plans. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.*Prices based on flights available on Expedia in the last year.
How do I find cheap flights from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Des Moines, IA (DSM-Des Moines Intl.)?
To find a cheap flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Des Moines, IA (DSM-Des Moines 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 Seattle, WA (SEA-Seattle - Tacoma Intl.) to Des Moines, IA (DSM-Des Moines Intl.)?
For flights from Seattle to Des Moines, September and October are your best bets. September offers return flights at about $392, making it an affordable choice as summer crowds thin out. October is also popular, providing a pleasant travel experience with mild weather. These months strike a nice balance between cost and availability, according to booking data from the past year.*Prices based on flights available on Expedia in the last year.
What is the earliest flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Des Moines, IA (DSM-Des Moines Intl.)?
The earliest flight from Seattle - Tacoma International Airport (SEA) to Des Moines International Airport (DSM) usually departs at around 12:05 AM local time, operated by American Airlines. This seasonal service is available in February and March, helping you get a head start on your trip to Des Moines. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What are the most popular departure times for flights from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Des Moines, IA (DSM-Des Moines Intl.)?
The most popular departure times for flights from Seattle-Tacoma International Airport (SEA) to Des Moines International (DSM) are in the early morning, from 6am to 9am. About 32% of passengers prefer this time window. Many major carriers, including Delta Airlines, United Airlines and American Airlines, offer flights during this window. This timing works well because it lets you arrive in Des Moines with a full day ahead of you.
How long does it take to fly from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Des Moines, IA (DSM-Des Moines Intl.)?
A flight from SEA to DSM with a layover takes around 8 hours 50 minutes, with the route covering approximately 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 Seattle, WA (SEA-Seattle - Tacoma Intl.) to Des Moines, IA (DSM-Des Moines Intl.)?
First class seats are offered on the SEA to DSM route. First class cabins are available on:

  • American Airlines
  • Delta Air Lines
  • United Airlines

How do I earn miles on a Seattle, WA (SEA-Seattle - Tacoma Intl.) to Des Moines, IA (DSM-Des Moines Intl.) flight with Expedia?
It's easy to earn miles on a Seattle, WA (SEA-Seattle - Tacoma Intl.) to Des Moines, IA (DSM-Des Moines 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 Des Moines from Seattle - Tacoma Intl. (SEA)?
If you're planning to travel to Des Moines from Seattle - Tacoma Intl. (SEA), you can fly into Des Moines Intl. (DSM) Some flights may connect through major hubs like San Francisco Intl. (SFO), Denver Intl. (DEN), Sacramento Intl. (SMF) before reaching Des Moines. 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 Seattle, WA (SEA-Seattle - Tacoma Intl.) to Des Moines, IA (DSM-Des Moines Intl.) at the last minute?
Typically, booking a last minute flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Des Moines, IA (DSM-Des Moines 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 Seattle, WA (SEA-Seattle - Tacoma Intl.) to Des Moines, IA (DSM-Des Moines Intl.) flight and hotel package?
Securing a Seattle, WA (SEA-Seattle - Tacoma Intl.) to Des Moines, IA (DSM-Des Moines Intl.) Des Moines Vacation Packages 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 Seattle, WA (SEA-Seattle - Tacoma Intl.) to Des Moines, IA (DSM-Des Moines Intl.)?
If you booked your Seattle, WA (SEA-Seattle - Tacoma Intl.) to Des Moines, IA (DSM-Des Moines 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
Seattle - Tacoma Intl.
Destination airport
Des Moines Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Southwest Airlines, United
Roundtrip price
$327
Distance
1460 mi

Book with confidence

Seattle to Des Moines Flights

The cheapest times to fly from Seattle to Des Moines

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Seattle to Des Moines are during the month of April. You can find some of the cheapest flights from Seattle to Des Moines with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Seattle to Des Moines

Sunday is one of the best days to book for cheap flights from Seattle to Des Moines: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Seattle to Des Moines

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Seattle to Des Moines in 2026. You can also book with separate airlines for your outbound and return journeys, from $125 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Seattle to Des Moines flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Seattle to Des Moines airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Seattle to Des Moines Flights

*Flight schedules are subject to change.

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*Available to One Key members.