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$84+ Cheap flights from Des Moines to Seattle (DSM - SEA)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/15. Fares are subject to change and may not be available on all flights or dates of travel.
DSM — SEA
Aug 3 — Aug 101
Sun 8/3
Sun 8/10
1 adult, Economy
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Cheapflights Tip: The best prices from Des Moines to Seattle/Tacoma Intl are usually found in January or September, booked 66 days in advance, depart on a Tuesday or Wednesday and return on a Wednesday

Cheap flight deals from Des Moines to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Des Moines (DSM) to Seattle (SEA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated July 29, 2025.

Round-trip from

$297
(Delta)

One-way from

$84
(Trip.com)

Popular in

December

Cheapest in

January

Average price

$478
From Des Moines to Seattle/Tacoma Intl
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One-way flight from Des Moines to Seattle/Tacoma Intl
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High demand for flights, 0% potential price rise
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Cheapest flight prices on average. 1% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find flight deals from Des Moines to Seattle

Cheapest flights from Des Moines to Seattle
Explore the most affordable flight options available from Des Moines to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2025.

This Delta deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/1610:55 amDSM - SEA
1 stop7h 34mDelta
Sat 10/411:40 pmSEA - DSM
1 stop8h 34mDelta
Deal found 7/28$297
This United Airlines deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/276:00 amDSM - SEA
1 stop5h 59mUnited Airlines
Tue 10/71:00 pmSEA - DSM
2 stops8h 56mUnited Airlines
Deal found 7/28$302
This Southwest deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/213:00 pmDSM - SEA
2 stops9h 45mSouthwest
Tue 10/287:10 amSEA - DSM
2 stops11h 45mSouthwest
Deal found 7/29$307
This Frontier deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/83:30 pmDSM - SEA
1 stop9h 32mFrontier
Mon 10/136:00 amSEA - DSM
1 stop11h 59mFrontier
Deal found 7/29$308
This American Airlines deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/277:08 amDSM - SEA
1 stop8h 51mAmerican Airlines
Sun 9/285:26 amSEA - DSM
1 stop7h 52mAmerican Airlines
Deal found 7/29$321

Cheapflights Fare Finder

 
Customize your flight search to find flights from Des Moines to Seattle that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 29, 2025.
Use the filters below to find and compare flights from Des Moines to Seattle that are best for you.

Fly from

Des Moines

Fly to

Seattle

Route

Depart

Return

Price

Des MoinesSeattle

DSM - SEA

DSMSEA

Des Moines

Tue 9/16

10:55 am-4:29 pm

1 stop7h 34m

Seattle/Tacoma Intl

Sat 9/20

11:40 pm-10:14 am

1 stop8h 34m

$297

Des MoinesSeattle

DSM - SEA

DSMSEA

Des Moines

Sat 9/27

6:00 am-9:59 am

1 stop5h 59m

Seattle/Tacoma Intl

Tue 10/7

1:00 pm-11:56 pm

2 stops8h 56m

$302

Des MoinesSeattle

DSM - SEA

DSMSEA

Des Moines

Tue 10/21

3:00 pm-10:45 pm

2 stops9h 45m

Seattle/Tacoma Intl

Tue 10/28

7:10 am-8:55 pm

2 stops11h 45m

$307

Des MoinesSeattle

DSM - SEA

DSMSEA

Des Moines

Wed 10/8

3:30 pm-11:02 pm

1 stop9h 32m

Seattle/Tacoma Intl

Mon 10/13

6:00 am-7:59 pm

1 stop11h 59m

$308

Des MoinesSeattle

DSM - SEA

DSMSEA

Des Moines

Sat 9/27

7:08 am-1:59 pm

1 stop8h 51m

Seattle/Tacoma Intl

Sun 9/28

5:26 am-3:18 pm

1 stop7h 52m

$321

Des MoinesSeattle

DSM - SEA

DSMSEA

Des Moines

Wed 10/15

3:30 pm-11:02 pm

1 stop9h 32m

$84

Des MoinesSeattle

DSM - SEA

DSMSEA

Des Moines

Sat 8/23

5:30 am-10:25 am

1 stop6h 55m

$149

Des MoinesSeattle

DSM - SEA

DSMSEA

Des Moines

Sat 8/23

11:35 am-9:17 pm

2 stops11h 42m

$154

Des MoinesSeattle

DSM - SEA

DSMSEA

Des Moines

Thu 10/16

11:45 am-10:45 pm

2 stops13h 00m

$255

Des MoinesSeattle

DSM - SEA

DSMSEA

Des Moines

Sat 11/29

5:35 pm-11:34 pm

1 stop7h 59m

$259

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/26

Showing 1-10 of 11 results
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Best time to book a flight from Des Moines to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Des Moines with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Des Moines to Seattle

How far ahead should I book a flight from Des Moines to Seattle?

Use this chart to determine the optimal time to book a round-trip flight from Des Moines to Seattle. Price data was last updated on July 25, 2025.

To ensure you get the cheapest price possible for a flight from Des Moines to Seattle, you should look to book at least 66 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Des Moines to Seattle?

Currently, January is the cheapest month in which you can book a flight from Des Moines to Seattle (average of $238). Flying from Des Moines to Seattle in June is currently the most expensive (average of $389). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from DSM to SEA?

Find hourly flight availability from Des Moines to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 29, 2025.

It’s optimal to fly from Des Moines to Seattle in the evening. By choosing this option you can save up to 18% on the cost of your flight, compared to a flight in the morning.

What is the cheapest day to fly from Des Moines to Seattle?

Use this chart to determine the cheapest time to fly round-trip from Des Moines to Seattle. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Des Moines to Seattle flight should consider departing on Wednesday evenings when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Seattle

Get insights into the airlines that provide service to Seattle. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Seattle. Reviews last updated July 29, 2025.
Read reviews from past customers who have flown Alaska Airlines, Southwest, and Delta from Des Moines to Seattle. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Crew

8.5

Boarding

8.1

Entertainment

7.1

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Crew

8.5

Boarding

8.1

Entertainment

7.1

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.
Southwest
8.0
Very good
4,238 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Crew

8.5

Boarding

8.1

Entertainment

7.1

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.
Delta
8.0
Very good
7,977 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Crew

8.5

Boarding

8.1

Entertainment

7.1

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.
United Airlines
7.4
Good
8,899 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Crew

8.5

Boarding

8.1

Entertainment

7.1

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Crew

8.5

Boarding

8.1

Entertainment

7.1

Food

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

EUG - SEA

Mobility support was fabulous No flight entertainment that I was aware of.

Related info for your journey

Find useful and relevant information for your journey from Des Moines to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines flying from Des Moines to Seattle round-trip?

    Delta, at $297, was found to be the cheapest airline from Des Moines to Seattle.Alternate airlines to your destination round-trip include United Airlines and Southwest. Delta is priced at 34% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from Des Moines to Seattle one-way?

    The cheapest airline one-way is Frontier, with whom users have recently found tickets for as low as $84. However, be on the lookout for offers from American Airlines and United Airlines, as they are both options that can get you from Des Moines to Seattle for a low price.

  • Can I find deals for flights from Des Moines to Seattle that include hotel bookings?

    Yes. In addition to deals on Des Moines to Seattle flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Des Moines to Seattle?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Des Moines to Seattle.

  • Can I find deals for business class flights from Des Moines to Seattle?

    Yes. Cheapflights offers flight deals from Des Moines to Seattle by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Des Moines to Seattle?

    Currently, January is the cheapest month in which you can book a flight from Des Moines to Seattle (average of $238). Flying from Des Moines to Seattle in June is currently the most expensive (average of $389). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
SeaTac
Tukwila
Tacoma
Ocean Shores
Lakewood
Lynnwood
Lacey
Leavenworth
Renton
Olympia
Puyallup
Kent
Cle Elum
Chehalis
Kirkland
Issaquah
Aberdeen
Shoreline
Federal Way
Shelton

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Top 6 airlines flying from Des Moines to Seattle

Discover the top 6 airlines that operate flights from Des Moines to Seattle. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$120Average$270FlexibilityNo cancel feeOn-time62%
DeltaCheapest$252Average$393FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$306Average$421FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$330Average$496FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$334Average$485FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$487Average$611FlexibilityNo cancel feeOn-time75%

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