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Cheap STL to SEA Flights

Prices found within past 7 days. Prices and availability subject to change. Additional terms may apply.

St. Louis to Seattle route information

Origin Airport Lambert-St. Louis Intl.
Destination Airport Seattle - Tacoma Intl.
Airlines Serving Alaska Airlines, American Airlines, Delta, Frontier Airlines, Sun Country Airlines, United
Flight Price $211
Distance 1,705 mi

Cheap STL to SEA Flights

  • What is the cheapest day to fly to Seattle?

    As of Sep 16th, the cheapest day to fly from Saint Louis to Seattle is Sep 17th. Tickets are currently being sold for $206, which is 36% below the average price.
  • Can I change the date of my flight?

    You sure can adjust your departure date and you may save money by changing when you leave. The lowest-cost day to fly in October is Saturday. Flexibility is key when booking travel to help keep costs down.
  • How much time do people spend in Seattle?

    The average time spent sightseeing in Seattle by passengers from Saint Louis is four days.
  • What is the cheapest airline flying from Saint Louis to Seattle?

    Frontier Airlines is your best bet for finding that sought-after low fare. They're offering fares as low as $206, while prices for similar flights can cost as much as $1,101.
  • How many flights are there per day from Saint Louis to Seattle?

    Each day is different, but on average, you can expect to see six available departure times. You won't have as many choices on this route as most others departing the United States.
  • How much is a plane ticket to Seattle (SEA) from Saint Louis (STL)?

    They can range from $206 to $1,101. Booking far in advance can usually help you get the cheapest rate. Prices tend to be lower the further out you book.
  • How long does it take to fly from Saint Louis to Seattle?

    Alaska Airlines currently holds the quickest travel time with four hours and 26 minutes. For example, you would arrive in Seattle at 9:46 PM PDT if you left Saint Louis at 7:20 PM CDT. Remember, there is a two-hour time change.

Missouri to Seattle Flights

Sometimes you just need to get out of town or maybe you’re looking for a change of scenery. Regardless of the reason, a flight from Missouri to Seattle will do just the trick! Go on, plan to see all the famous landmarks and eat your weight in the local cuisine. Your trip is beckoning, so answer the call by packing your suitcase and filling your travel itinerary with exploring Seattle.

Whether you’re flying for business or jet-setting on your personal time, you’ve come to the right place. Here at, we’ll pair you up with STL to SEA flights that won’t make your bank account wince. Ready to temporarily leave behind Missouri for new horizons? Browse through our cheap airfare, and filter by flight times and dates until you find just what you had in mind. From flights without layovers to ones that arrive early in the morning, you’ll come across plane tickets that suit your travel preferences. You can even bundle your flight to SEA with hotels and car rentals to score even bigger savings.

All set to hit the clouds? Book your travel arrangements with us today and have left-over money to put toward your travel outings and adventures.

Sep 8, 2019

I love Alaska airlines

Sep 5, 2019

Didn’t mention charge card but I’m interested

Aug 4, 2019

Got poor seat way back uncomfortable

Aug 2, 2019

I made a typo on my wife's name for the ticket and Alaska got it straightened out very quickly and professionally

Jun 23, 2019

The staff was very nice.

May 29, 2019

The staff was WONDERFUL

May 10, 2019

Online checkin was fine, until tried to print boarding passes. Had to use kiosk at airport, which worked well. Really liked getting an entire can of soda, instead of just a glass full.

Apr 11, 2019

Arrived a bit early; yay! Which was good bc I had quite a hike to get to my connecting flight.

Mar 17, 2019

Staff were kind enough to not charge for food since we had to sit in the back by the restrooms

Jan 3, 2019

Timely departure and arrival. Pilots talk to passengers