¥17,545 Cheap Flights from Seattle (SEA) to St. Louis (STL)

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Cheap Flights from Seattle to St. Louis (SEA-STL)

Prices were available within the past 7 days and start at ¥17,545 for one-way flights and ¥42,170 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Delta
American Airlines
Delta
Delta
Delta
United
Delta
Delta
American Airlines
Flights from Seattle (SEA) to St. Louis (STL)
Origin airport
Seattle - Tacoma Intl.
Destination airport
Lambert-St. Louis Intl.
Roundtrip price
¥42,170
Distance
2728 km
Average flight time
5 hours 59 mins

Seattle to St. Louis 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 Seattle to 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 St. Louis.

Whether you’re flying for business or jet-setting on your personal time, you’ve come to the right place. Here at Expedia.com, we’ll pair you up with SEA to STL flights that won’t make your bank account wince. Ready to temporarily leave behind Seattle 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 STL 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.

Frequently asked questions

How much is a flight from Sea-Tac Airport to Lambert-St. Louis Intl. Airport (STL)?
If you’re traveling from SEA to Lambert-St. Louis Intl. Airport (STL), round-trip flights start from ¥42,170. This figure is based on fares advertised within the last 7 days on Expedia for flights departing within the next year, so don’t let a good deal pass you by. Book now and save yourself money and time. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Sea-Tac Airport to Lambert-St. Louis Intl. Airport (STL)?
This differs between airlines, as each has its own terms and conditions. Visit the Customer Service Portal, where there are instructions on how to cancel your flight online.
How do I find cheap flights from Sea-Tac Airport to Lambert Field that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you’re searching for Seattle - Tacoma Intl. Airport (SEA) to Lambert Field flights, you’ll see a “no change fees” filter for you to select.
How many hours is the flight from Sea-Tac Airport to Lambert-St. Louis Intl. Airport (STL)?
Lasting around 6 hours and 41 minutes, the flight between Seattle - Tacoma Intl. Airport (SEA) and Lambert-St. Louis Intl. Airport (STL) is a great opportunity to do some last-minute trip planning. Why not use some of this time to work on your itinerary for St. Louis?
How far is the flight from Sea-Tac Airport to St. Louis Lambert International Airport?
You’ll be up above the clouds for a while, as the flight distance from SEA to Lambert-St. Louis Intl. Airport (STL) is 2,700 kilometers. Create a playlist of your favorite podcasts before you leave home to keep yourself entertained during the journey.
Which airlines fly direct from Seattle - Tacoma Intl. Airport (SEA) to St. Louis Lambert International Airport?
Offering 86 flights monthly, Alaska Airlines (AS) is a popular choice when flying straight from SEA to Lambert-St. Louis Intl. Airport (STL).
Are Seattle - Tacoma Intl. Airport (SEA) to STL flight tickets cheaper when they're purchased at the last minute?
Booking last minute from Sea-Tac Airport to STL can be hit-or-miss. It is possible to score a bargain, but you could also completely miss out! If you’d rather start planning ahead of time, Expedia compares flight deals up to a year in advance. Just bear in mind that not all airlines publish their prices so far in advance. Our suggestion? Check back often as updates are made frequently.
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