$149 Cheap United flights Seattle (SEA) to Des Moines (DSM)

View $149 flight on Wed, Dec 3, 2025Opens in a new window

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$149 Cheap United flights Seattle (SEA) to Des Moines (DSM)

Prices were available within the past 7 days and start at $149 for one-way flights and $278 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Tue, Oct 7 - Sun, Oct 12
SEA
Seattle
DSM
Des Moines
$278 Roundtrip, found 2 days ago
$278
Roundtrip
found 2 days ago
Select United flight, departing Tue, Oct 7 from Seattle to Des Moines, returning Sun, Oct 12, priced at $278 found 2 days ago
United
Tue, Sep 16 - Sun, Sep 21
SEA
Seattle
DSM
Des Moines
$286 Roundtrip, found 2 days ago
$286
Roundtrip
found 2 days ago
Select United flight, departing Tue, Sep 16 from Seattle to Des Moines, returning Sun, Sep 21, priced at $286 found 2 days ago
United
Tue, Sep 16 - Wed, Sep 17
SEA
Seattle
DSM
Des Moines
$292 Roundtrip, found 9 hours ago
$292
Roundtrip
found 9 hours ago
Select United flight, departing Tue, Sep 16 from Seattle to Des Moines, returning Wed, Sep 17, priced at $292 found 9 hours ago
United
Tue, Sep 16 - Wed, Sep 17
SEA
Seattle
DSM
Des Moines
$300 Roundtrip, found 9 hours ago
$300
Roundtrip
found 9 hours ago
Select United flight, departing Tue, Sep 16 from Seattle to Des Moines, returning Wed, Sep 17, priced at $300 found 9 hours ago
United
Tue, Sep 16 - Wed, Sep 17
SEA
Seattle
DSM
Des Moines
$304 Roundtrip, found 9 hours ago
$304
Roundtrip
found 9 hours ago
Select United flight, departing Tue, Sep 16 from Seattle to Des Moines, returning Wed, Sep 17, priced at $304 found 9 hours ago
United
Tue, Sep 23 - Tue, Oct 7
SEA
Seattle
DSM
Des Moines
$307 Roundtrip, found 1 day ago
$307
Roundtrip
found 1 day ago
Select United flight, departing Tue, Sep 23 from Seattle to Des Moines, returning Tue, Oct 7, priced at $307 found 1 day ago
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
Popular airline
Alaska Airlines
Distance
1460 mi

Frequently asked questions

How much is a United Airlines flight from Seattle - Tacoma Intl. Airport (SEA) to Des Moines Intl. Airport (DSM)?
Use the "Price (lowest to highest)" filter on Expedia to look for cheap United Airlines round-trip flights from $278 from SEA to DSM. Affordable one-way options from $149 are also available.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
What is the cheapest month to fly from SEA to DSM with United Airlines?
Search for one-way or round-trip flights to Des Moines in January or December. You could find lower fares with United Airlines during these off-peak months.
What is the cheapest time to book flights from Seattle - Tacoma Intl. Airport (SEA) to Des Moines Intl. Airport (DSM) with United Airlines?
To find cheap United Airlines fares from Seattle - Tacoma Intl. Airport (SEA) to Des Moines Intl. Airport (DSM), start searching one to three months before your intended departure. Securing domestic flights 34 to 86 days in advance could save you 25% compared to booking just 6 to 12 days ahead. The day you book can also influence the cost. Sunday is generally the most affordable, while Monday is often the most expensive for domestic flights. You can save 6% on average by booking on a Sunday.**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.
Does United Airlines fly nonstop from Seattle - Tacoma Intl. Airport (SEA) to Des Moines Intl. Airport (DSM)?
Enter your dates, press search and select the "Nonstop" filter on Expedia to find any direct flights from SEA to DSM with United Airlines or other airlines.
What is the earliest United Airlines flight from SEA to DSM?
To find the earliest departures from SEA to DSM with United Airlines, sort your results by "Early Morning" and "Morning." Choosing an early flight generally means you're less likely to experience cancellations.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports does United Airlines fly into in Des Moines?
United Airlines flights from Seattle - Tacoma Intl. Airport (SEA) to Des Moines arrive at Des Moines Intl. Airport (DSM). This is the main entry point to this city.
Why fly with United Airlines from SEA to DSM?
A rewarding loyalty program and the ability to collect points through United Mileage Plus are the start of the reasons to leave from SEA to DSM with United Airlines. Plus, by joining Expedia's free One Key™ program, you can receive OneKeyCash™* alongside United Airlines's loyalty program earnings. It's yours to spend on future bookings.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.
Can I change or cancel my United Airlines flight from Seattle - Tacoma Intl. Airport (SEA) to Des Moines Intl. Airport (DSM)?
Depending on the ticket type you purchased, a fee will generally apply if you modify or cancel your booking more than 24 hours after it's been confirmed. To secure flexible plane tickets, select our "No cancel fee" or "Changes included" filter when you look for flights. For more information on changing or canceling your reservation, head to "Trips," select your flight and tick "Manage Booking."

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