C$185 Cheap Flights from Des Moines (DSM) to Seattle (SEAA)

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Find the cheapest month to fly from Des Moines to Seattle

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Des Moines to Seattle flights are currently cheapest in August.

Des Moines to Seattle: Flight information

The things to know before you go.
Cheapest flight foundC$185
Cheapest month to flyAugust

Finding cheap flights from Des Moines to Seattle: Frequently asked questions

There are 4 airports in Seattle: Seattle Lake Union SPB, Seattle Boeing Fld, Seattle / Tacoma International, and Paine Field.
The best price we found for a return flight from Des Moines to Seattle is C$362. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from Des Moines to Seattle. But we found flights with one or more stops from C$362.
As of July 2026, there are no flights flying from Des Moines to Seattle.
The cheapest month to fly from Des Moines to Seattle is usually August.
If you're flying from Des Moines Airport, the cheapest airport near Seattle is Seattle / Tacoma International – which is 19.5 km away from the centre of Seattle. We've found flights into this airport from C$362.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Des Moines Airport to Seattle on Friday, August 14, 2026.
No airlines currently offer direct flights between Des Moines Airport and Seattle. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Seattle but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Seattle is around 40 days in advance, so don’t leave your flight to the last minute.

In July, the average temperature is usually around 17°C. August is typically the warmest month in Seattle, when it usually averages around 23°C. You can expect the least rain in July. The coldest month is December, with temperatures averaging 0°C. The rainiest month is November.
Currently, Allegiant Air offers the cheapest flight tickets to Seattle.

Travelling from Des Moines International Airport (DSM) to Seattle: what you need to know

  • Des Moines International Airport is located in Des Moines. Based in the UTC-8 timezone, Seattle is two hours behind Des Moines.

  • To avoid rushing for your DSM to Seattle flight, leave enough time for things like baggage drop and finding your gate. Arriving two hours before international departures and one hour before domestic flights is the general rule.

  • Travelling during a peak month like July? Public holidays and other popular seasons can lead to longer queues and delays at check-in and security. Play it safe and get there up to four hours ahead of an international flight and two hours before a domestic departure.

  • Located around 6 kilometres from the centre of Des Moines, DSM can be reached in about 15 minutes by car (depending on traffic). The journey on public transport will take roughly 30 minutes.

  • Have an early flight from Des Moines International Airport to Seattle? Avoid the last-minute rush to the airport (and sneak in some extra snooze time) by choosing one of these hotels close to DSM:

  • When it comes to the on-time performance of Des Moines International Airport, 77% of flights complete their journey on time.

  • The address for DSM is 5800 Fleur Drive, Suite 201.

How to find the cheapest flights from Des Moines International Airport (DSM) to Seattle

  • C$185 is currently the best price for a one-way Des Moines International Airport to Seattle flight. Return plane tickets start at C$362. These fares can change based on demand.

  • Don't leave everything to the last moment. You're more likely to land cheap flights from DSM to Seattle if you book in advance. Airlines often have some amazing early bird deals.

  • Landing cheap tickets from Des Moines International Airport to Seattle is easier if you're flexible with your travel plans. Use the 'Whole month' tool to get the lowest fares across the month and snap up a sweet deal.

  • Snapping up a cheap flight from DSM to Seattle is easy with Price Alerts. Simply set up one of these automatic notifications and we'll notify you when a new discount appears.

  • Select your ideal arrival and departure times, airlines and number of stops with our filters. Then, sort the results for your flight from Des Moines International Airport to Seattle by 'Best,' 'Fastest' or 'Cheapest.'

Airports in Seattle

Seattle-Tacoma International Airport (SEA)

  • Seattle-Tacoma International Airport (SEA) to the centre of Seattle takes around 25 minutes by car. The centre is roughly 23 kilometres away.

  • If you're travelling by public transport, expect a journey time of about 35 minutes.

  • Book a hotel close to SEA if you have a late flight from Des Moines International Airport to Seattle. Settle into one of these accommodation options and make arrival day easier:

  • Booking your ride from Seattle-Tacoma International Airport about one week ahead of your flight from DSM to Seattle can help you get the lowest rate.

Seattle Paine Field International Airport (PAE)

  • Once your flight from Des Moines International Airport to Seattle has landed, you can reach the city centre in around 40 minutes by car. Central Seattle is roughly 40 kilometres from Seattle Paine Field International Airport (PAE).

  • The journey will take roughly 1 hour 30 minutes on public transport.

  • Hang up the 'Do not disturb' sign and rest at a hotel close to PAE. Here are a few options where you can check in after your DSM to Seattle flight:

  • Get the vehicle you actually want, not just what's left over, by booking your ride from PAE before your arrival. You'll also avoid paying more than you need to, especially during busy airport times.

King County International Airport (BFI)

  • Find your way to the city centre after your flight from Des Moines International Airport to Seattle has landed. Central Seattle is about 11 kilometres from King County International Airport (BFI) and takes roughly 20 minutes to get to by car.

  • The journey will take about 35 minutes if you use public transport.

  • If you don't want to travel to the centre, find a hotel near BFI. Make yourself comfortable at one of these options after your DSM to Seattle flight:

  • Booking a couple of weeks in advance of your flight from Des Moines International Airport to Seattle is always smart. Along with better deals, you'll be able to choose the vehicle make and model you prefer at BFI.

Best time to go to Seattle

  • December is the quietest month for flights from Des Moines International Airport to Seattle, while July is the most popular. Choose the ideal time to go to Seattle based on whether you want a bustling atmosphere or a more laid-back vibe.

  • The warmest month in Seattle is August, with temperatures ranging between 12ºC (54ºF) and 28ºC (82ºF). Lock in your Des Moines International Airport to Seattle plane ticket then if that's your definition of good weather.

  • Search for cheap tickets from DSM to Seattle in February if you want to travel in cooler conditions. Temperatures are at their lowest then, ranging between -1ºC (30ºF) and 11ºC (52ºF) on average.

More about Seattle

  • Once you've booked your flight from Des Moines International Airport to Seattle, find a hotel that offers both comfort and a great location. Make one of these options your base for exploring Seattle:

  • There are so many things to do and see in this city it can be hard to know where to begin. Pike Place Market, Space Needle and Seattle Skyline are top attractions which should be on any good Seattle itinerary.

Explore more of the United States

  • Portland is just one of the many cities in the United States waiting to be explored after you've seen Seattle. Around 241 kilometres away to the south, popular attractions include Portland Japanese Garden, Peninsula Park Rose Garden and Beyond Van Gogh Portland.

  • If there's time to check out another well-known destination in the United States, head for Spokane, roughly 370 kilometres east of Seattle. Riverside State Park, Spokane Falls (Upper Falls) and Cathedral of Our Lady of Lourdes are among its highlights.

Prices shown on this page are estimated lowest prices only. Found in the last 12 days.