$154 Cheap Flights from Seattle (SEA) to Des Moines (DSM)

View $154 flight on Wed, Oct 29, 2025Opens 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 $154 for one-way flights and $228 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Wed, Sep 24 - Wed, Oct 15
SEA
Seattle
DSM
Des Moines
$228 Roundtrip, found 3 days ago
$228
Roundtrip
found 3 days ago
Select Frontier Airlines flight, departing Wed, Sep 24 from Seattle to Des Moines, returning Wed, Oct 15, priced at $228 found 3 days ago
Frontier Airlines
Fri, Sep 5 - Mon, Sep 15
SEA
Seattle
DSM
Des Moines
$248 Roundtrip, found 1 day ago
$248
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Fri, Sep 5 from Seattle to Des Moines, returning Mon, Sep 15, priced at $248 found 1 day ago
Frontier Airlines
Fri, Sep 26 - Sun, Oct 5
SEA
Seattle
DSM
Des Moines
$259 Roundtrip, found 6 days ago
$259
Roundtrip
found 6 days ago
Select Frontier Airlines flight, departing Fri, Sep 26 from Seattle to Des Moines, returning Sun, Oct 5, priced at $259 found 6 days ago
Frontier Airlines
Sun, Oct 26 - Fri, Oct 31
SEA
Seattle
DSM
Des Moines
$260 Roundtrip, found 6 days ago
$260
Roundtrip
found 6 days ago
Select Frontier Airlines flight, departing Sun, Oct 26 from Seattle to Des Moines, returning Fri, Oct 31, priced at $260 found 6 days ago
Frontier Airlines
Sat, Nov 1 - Sun, Nov 2
SEA
Seattle
DSM
Des Moines
$268 Roundtrip, found 6 days ago
$268
Roundtrip
found 6 days ago
Select Frontier Airlines flight, departing Sat, Nov 1 from Seattle to Des Moines, returning Sun, Nov 2, priced at $268 found 6 days ago
Frontier Airlines
Wed, Sep 24 - Sun, Oct 5
SEA
Seattle
DSM
Des Moines
$268 Roundtrip, found 3 days ago
$268
Roundtrip
found 3 days ago
Select Frontier Airlines flight, departing Wed, Sep 24 from Seattle to Des Moines, returning Sun, Oct 5, priced at $268 found 3 days ago
Southwest Airlines
Wed, Sep 10 - Sun, Sep 14
SEA
Seattle
DSM
Des Moines
$278 Roundtrip, found 3 days ago
$278
Roundtrip
found 3 days ago
Select Southwest Airlines flight, departing Wed, Sep 10 from Seattle to Des Moines, returning Sun, Sep 14, priced at $278 found 3 days ago
United
Wed, Sep 24 - Fri, Oct 3
SEA
Seattle
DSM
Des Moines
$283 Roundtrip, found 1 day ago
$283
Roundtrip
found 1 day ago
Select United flight, departing Wed, Sep 24 from Seattle to Des Moines, returning Fri, Oct 3, priced at $283 found 1 day ago
American Airlines
Sat, Sep 20 - Mon, Sep 29
SEA
Seattle
DSM
Des Moines
$293 Roundtrip, found 1 day ago
$293
Roundtrip
found 1 day ago
Select American Airlines flight, departing Sat, Sep 20 from Seattle to Des Moines, returning Mon, Sep 29, priced at $293 found 1 day ago
Delta
Mon, Sep 29 - Tue, Sep 30
SEA
Seattle
DSM
Des Moines
$303 Roundtrip, found 3 days ago
$303
Roundtrip
found 3 days ago
Select Delta flight, departing Mon, Sep 29 from Seattle to Des Moines, returning Tue, Sep 30, priced at $303 found 3 days ago

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

September is typically the cheapest month to fly

From $166 - $576 per traveler.

Graph displaying average flight prices per month

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 $461
DSM
Des Moines Intl.
CheapestClosest
Average driving time to city center10 min
Flights from $461
Flights from Seattle (SEA) to Des Moines (DSM)
Origin airport
Seattle - Tacoma Intl.
Destination airport
Des Moines Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Southwest Airlines, United
Roundtrip price
$207
Distance
1460 mi

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 September. 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 2025. You can also book with separate airlines for your outbound and return journeys, from $154 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.

 

Frequently asked questions

How much does a flight from Seattle - Tacoma Intl. Airport (SEA) to Des Moines Intl. Airport (DSM) cost?
Grab a cheap one-way flight from $154 or cheap return flight from $228 from Seattle - Tacoma Intl. Airport (SEA) to Des Moines Intl. Airport (DSM) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Seattle - Tacoma Intl. Airport (SEA) to Des Moines Intl. Airport (DSM)?
September is the least expensive month to fly from SEA to DSM. Planning your trip for the off-season is often the key to scoring lower fares.
What is the cheapest airline that flies from Seattle - Tacoma Intl. Airport (SEA) to Des Moines Intl. Airport (DSM)?
Expedia's filter tool lets you easily compare airlines, flight times and fares all in one place. Customize the search to your preferences, then sort by "Price (lowest to highest)" to find out which carrier offers the cheapest SEA to DSM flight.
How many flights per day from Seattle - Tacoma Intl. Airport (SEA) to Des Moines Intl. Airport (DSM)?
Nonstop flights from Seattle - Tacoma Intl. Airport (SEA) to Des Moines Intl. Airport (DSM) aren't available daily, so you'll need to take a flight with a layover. Explore your options with Expedia's filters. Enter your travel details and select either "1 Stop" or "2+ Stops."
What day of the week has the most flights from SEA to DSM?
Friday is usually the busiest day for flights, while Tuesday tends to be the quietest.* Keep in mind that flight schedules can change based on a range of factors, including the time of year and airline.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Seattle - Tacoma Intl. Airport (SEA) to Des Moines Intl. Airport (DSM)?
To avoid potential delays on the Seattle - Tacoma Intl. Airport (SEA) to Des Moines Intl. Airport (DSM) route, travel before 3 PM. Flights after this time have a 22% higher chance of being canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Seattle - Tacoma Intl. Airport (SEA) to Des Moines Intl. Airport (DSM) last-minute?
Last-minute bookings from SEA to DSM are typically more expensive. To secure the cheapest rates, start searching for flights well ahead of time. That being said, if you're flexible with your travel plans, you may find a cheap ticket right before your journey.
Is it cheaper to book a SEA to DSM flight and hotel package?
Opting for a SEA to DSM flight and hotel package tends to be cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our impressive range of accommodations and then add car rentals, flights and activities to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Seattle - Tacoma Intl. Airport (SEA) to Des Moines Intl. Airport (DSM)?
It's usually possible to cancel or reschedule your SEA to DSM flight. However, for bookings made more than 24 hours ago, additional fees may apply. Check your airline's policies in your itinerary to see what changes are possible and whether any costs are involved. You'll also find further details on our Customer Service portal.

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*Available to One Key members.