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$129+ 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 6/6. Fares are subject to change and may not be available on all flights or dates of travel.
DSM — SEA
May 3 — May 101
Sat 5/3
Sat 5/10
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 April 28, 2025.

Most accurate provider

Mytrip
3 stars

Most trusted provider

Mytrip
3 stars

Round-trip from

$299
(Delta)

One-way from

$150
(Delta)

Popular in

June

Cheapest in

January

Average price

$431
Provider with most accurate pricing for Des Moines-Seattle/Tacoma Intl flight deals.
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Provider most trusted by Cheapflights users for Des Moines-Seattle/Tacoma Intl flights.
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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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Highest demand for flights based on searches. 12% potential increase in price ($65 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($9 potential savings vs. average RT price).
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Average for round-trip flights in April 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 April 28, 2025.

This Delta deal was found by Cheapflights users on 4/28. 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 6/105:23 pmDSM - SEA
1 stop8h 30mDelta
Tue 6/1711:53 pmSEA - DSM
1 stop8h 26mDelta
Deal found 4/28$299
This Mytrip deal was found by Cheapflights users on 4/27. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/62:45 pmDSM - SEA
2 stops25h 40mMultiple Airlines
Thu 6/123:58 pmSEA - DSM
1 stop18h 36mMultiple Airlines
Deal found 4/27$301
This Southwest deal was found by Cheapflights users on 4/28. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/133:25 pmDSM - SEA
2 stops10h 40mSouthwest
Thu 8/215:00 amSEA - DSM
1 stop6h 00mSouthwest
Deal found 4/28$322
This American Airlines deal was found by Cheapflights users on 4/28. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/265:32 amDSM - SEA
1 stop6h 43mAmerican Airlines
Sun 6/11:10 amSEA - DSM
1 stop9h 11mAmerican Airlines
Deal found 4/28$335
This United Airlines deal was found by Cheapflights users on 4/27. 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.
Tue 7/295:12 pmDSM - SEA
1 stop6h 21mUnited Airlines
Tue 8/125:10 amSEA - DSM
2 stops9h 05mUnited Airlines
Deal found 4/27$345
This Booking.com deal was found by Cheapflights users on 4/26. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/158:43 pmDSM - SEA
1 stop28h 59mFrontier
Sun 8/177:48 pmSEA - DSM
1 stop22h 10mFrontier
Deal found 4/26$422
This Alaska Airlines deal was found by Cheapflights users on 4/27. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/225:32 amDSM - SEA
1 stop6h 55mAlaska Airlines
Sat 8/236:00 amSEA - DSM
1 stop7h 01mAlaska Airlines
Deal found 4/27$472

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 April 28, 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 6/10

5:23 pm-11:53 pm

1 stop8h 30m

Seattle/Tacoma Intl

Tue 6/17

11:53 pm-10:19 am

1 stop8h 26m

$299

Des MoinesSeattle

DSM - SEA

DSMSEA

Des Moines

Fri 6/6

2:45 pm-2:25 pm

2 stops25h 40m

Seattle/Tacoma Intl

Thu 6/12

3:58 pm-12:34 pm

1 stop18h 36m

$301

Des MoinesSeattle

DSM - SEA

DSMSEA

Des Moines

Wed 8/13

3:25 pm-12:05 am

2 stops10h 40m

Seattle/Tacoma Intl

Thu 8/21

5:00 am-1:00 pm

1 stop6h 00m

$322

Des MoinesSeattle

DSM - SEA

DSMSEA

Des Moines

Mon 5/26

5:32 am-10:15 am

1 stop6h 43m

Seattle/Tacoma Intl

Sun 6/1

1:10 am-12:21 pm

1 stop9h 11m

$335

Des MoinesSeattle

DSM - SEA

DSMSEA

Des Moines

Tue 7/29

5:12 pm-9:33 pm

1 stop6h 21m

Seattle/Tacoma Intl

Tue 8/12

5:10 am-4:15 pm

2 stops9h 05m

$345

Des MoinesSeattle

DSM - SEA

DSMSEA

Des Moines

Fri 8/15

8:43 pm-11:42 pm

1 stop28h 59m

Seattle/Tacoma Intl

Sun 8/17

7:48 pm-7:58 pm

1 stop22h 10m

$422

Des MoinesSeattle

DSM - SEA

DSMSEA

Des Moines

Thu 5/22

5:32 am-10:27 am

1 stop6h 55m

Seattle/Tacoma Intl

Tue 8/19

6:00 am-3:01 pm

1 stop7h 01m

$472

Des MoinesSeattle

DSM - SEA

DSMSEA

Des Moines

Fri 6/6

8:38 pm-12:34 am

1 stop5h 56m

$129

Des MoinesSeattle

DSM - SEA

DSMSEA

Des Moines

Wed 7/9

11:24 am-6:47 pm

1 stop9h 23m

$150

Des MoinesSeattle

DSM - SEA

DSMSEA

Des Moines

Mon 5/26

5:32 am-10:15 am

1 stop6h 43m

$168

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/27

Showing 1-10 of 13 results
1
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Compare providers for flights from Des Moines to Seattle

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Des Moines to Seattle in April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
MytripPrice Accuracy3 starsTrust Score*3 stars
Kiwi.comPrice Accuracy3 starsTrust Score*3 stars
CheapTicketsDealPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Des Moines-Seattle flights, users find the pricing of Mytrip to be most consistent on Cheapflights vs. Mytrip Users can find the same prices on Des Moines-Seattle flight deals on Cheapflights vs. Mytrip >95% of the time. Price accuracy is based on data collected from Des Moines-Seattle flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Des Moines-Seattle flights, Cheapflights users trust Mytrip the most. Mytrip has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Des Moines-Seattle flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 April 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 July is currently the most expensive (average of $405). 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 April 28, 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.

Rainfall in Seattle by month

Plan your trip to Seattle by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Seattle ranges from 0.7 - 6.6 inches per month. November is typically the wettest month, when rainfall can reach 6.6 in. July is typically the driest time to visit Seattle when rainfall is around 0.7 in.

Temperature in Seattle by month

Plan your trip to Seattle by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Seattle, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 66.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 41.0 F).

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 April 28, 2025.
To help decide which airline to fly from Des Moines to Seattle, see what other customers have to say about Alaska Airlines, Southwest and Delta. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,949 reviews

Boarding

8.2

Crew

8.5

Comfort

7.9

Overall

8.0

Entertainment

7.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Alaska Airlines
8.0
Very good
9,949 reviews
Alaska Airlines
8.0
Very good
9,949 reviews

Boarding

8.2

Crew

8.5

Comfort

7.9

Overall

8.0

Entertainment

7.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Southwest
8.0
Very good
4,292 reviews
Alaska Airlines
8.0
Very good
9,949 reviews

Boarding

8.2

Crew

8.5

Comfort

7.9

Overall

8.0

Entertainment

7.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Delta
8.0
Very good
7,929 reviews
Alaska Airlines
8.0
Very good
9,949 reviews

Boarding

8.2

Crew

8.5

Comfort

7.9

Overall

8.0

Entertainment

7.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
United Airlines
7.4
Good
8,696 reviews
Alaska Airlines
8.0
Very good
9,949 reviews

Boarding

8.2

Crew

8.5

Comfort

7.9

Overall

8.0

Entertainment

7.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
9,949 reviews

Boarding

8.2

Crew

8.5

Comfort

7.9

Overall

8.0

Entertainment

7.1

Food

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

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 $299, was found to be the cheapest airline from Des Moines to Seattle.Alternate airlines to your destination round-trip include United Airlines and American Airlines. Delta is priced at 35% 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 Delta, with whom users have recently found tickets for as low as $150. However, be on the lookout for offers from United Airlines and American 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 July is currently the most expensive (average of $405). 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 Des Moines?

Book flights to Des Moines if you plan to visit one of these locations
SeaTac
Tukwila
Tacoma
Renton
Lakewood
Ocean Shores
Lacey
Leavenworth
Federal Way
Olympia
Shoreline
Cle Elum
Centralia
Kent
Aberdeen
Lynnwood
Shelton
Silverdale
Redmond
Issaquah

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Des Moines to Seattle

See prices for flight routes from nearby airports that may be better suited for you.
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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 April 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$127Average$268FlexibilityNo cancel feeOn-time62%
DeltaCheapest$296Average$420FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$296Average$421FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$321Average$496FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$336Average$489FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$486Average$576FlexibilityNo cancel feeOn-time75%

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