$209 Cheap Alaska Airlines flights Seattle (SEA) to Des Moines (DSM)

Finding cheap one-way Alaska Airlines flights from SEA to DSM from $209 on Expedia is a breeze — just filter by “Price (lowest to highest).” Or check out our affordable return fares from $365 for your next exciting getaway.**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.

January is one of the least expensive months to jet off to Des Moines with Alaska Airlines. You could also find fantastic deals on one-way and return fares in December.

Search for cheap Alaska Airlines flights from Seattle - Tacoma Intl. Airport (SEA) to Des Moines Intl. Airport (DSM) one to three months before your departure date. Travelers who book domestic flights 34 to 86 days in advance can save 25% compared to those who book just 6 to 12 days ahead. Regardless of fare type and itinerary, the best day to book a domestic flight is usually Sunday and the most expensive day tends to be Monday. Passengers who book on a Sunday can save 6% on average compared to those who book their travel on a Monday.**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.

Fill in your dates, hit search and select the “Nonstop” filter on Expedia to find any direct flights from SEA to DSM with Alaska Airlines or other carriers.

Browse Alaska Airlines’s earliest flights from SEA to DSM by selecting our “Morning” and “Early Morning” filters. Not only will you arrive sooner, early departures are also 20% less likely to be canceled.**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.

Catch an Alaska Airlines flight from Seattle - Tacoma Intl. Airport (SEA) to Des Moines, and you’ll most likely arrive at Des Moines Intl. Airport (DSM). This is the airline’s main hub in this city.

Flying from SEA to DSM with Alaska Airlines means enjoying a host of benefits, such as top-tier customer service and an excellent in-flight experience. Plus, when booking through Expedia, One Key™ members can earn OneKeyCash™* to spend on select future travel purchases. That’s on top of the Mileage Plan points you can earn with Alaska Airlines.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

Changes are usually free within 24 hours of making your booking, but your airline may charge a fee after that time. For more information about altering your flights, head to your “Trips,” select your flight and click on “Manage Booking.” If you’d like the flexibility to update your itinerary without being charged, apply the “Changes included” and “No cancel fee” filters when planning your next getaway.