$118 American Airlines Cheap Flights from St. Louis to Seattle

Find The Best Day To Fly from St. Louis to Seattle

Amazing American Airlines STL to SEA Flight Deals

The cheapest flights to Seattle - Tacoma Intl. found within the past 7 days were $177 round trip and $118 one way. Prices and availability subject to change. Additional terms may apply.

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Frequently asked questions

Can I catch a flight from Lambert-St. Louis Intl. Airport (STL) to SEA right now?
For any current Seattle - Tacoma Intl. Airport (SEA) quarantine requirements and travel advice, go to the Covid-19 Travel Advisor. Check before you arrange your flight, so you don’t get caught out.
What terminal is American Airlines at St. Louis Lambert International Airport?
If you’re flying from STL to Sea-Tac Airport with American Airlines, you’ll probably be departing from terminal 1. Your airline should be able to let you know exactly which terminal you’ll be hopping off the plane at.
Are there American Airlines non-stop flights from STL to SEA?
There aren’t any nonstop flights with American Airlines from Lambert-St. Louis Intl. Airport (STL) to Seattle - Tacoma Intl. Airport (SEA). You will have at least one stopover, so use the time to wander around and stretch those legs before boarding your connecting flight.
How long is an American Airlines flight from STL to SEA?
Indulge in some in-flight shut-eye and start your vacation relaxed and refreshed. You’ll have enough time to do so when traveling with American Airlines between Lambert Field and Sea-Tac Airport, with the flight taking on average 6 hours and 31 minutes.
What type of aircraft does American Airlines fly from STL to SEA?
When you take to the skies between STL and SEA with American Airlines, you’ll usually be doing it aboard the Boeing 737-900. The airline also operates the Boeing 737-900 on this route.
How many direct and indirect flights does American Airlines fly from STL to SEA?
You can take your pick of roughly 5 flights every day with American Airlines from Lambert Field to Sea-Tac Airport.
If I am not able to travel due to COVID-19, can I change my booking to a later date?
For more info about changing your flight to Seattle - Tacoma Intl. Airport (SEA), please visit our Customer Service Portal.
What is the best day to buy a plane ticket?
This just in! Airfares offered on Thursdays tend to be the cheapest, according to flight demand on Travelocity in 2021. Tuesday and Wednesday prices are also good, but you may want to prepare your budget if booking during the weekend, as data shows that is when prices are generally at their highest.
What are the cheapest days to fly?
Frequent travelers may already know this, but earlier in the week can be the cheapest time to fly. In 2021, flights departing on a Monday were generally the cheapest of the week, whereas you may pay a premium for weekend flights when demand is usually high. On average, tickets were most expensive for Saturday departures, so if you need to fly out on a weekend, you might look for deals ahead of time.
How far in advance can you book a flight?
Trying to figure out how early you should book your flight? It’s possible to start comparing international airfares on Travelocity up to 12 months in advance. However, it does depend on the carrier as not all airlines release their prices that far out. According to our 2021 flight demand trends, last minute planners can still bag a bargain with some of the cheapest fares appearing 0-2 weeks prior to their travel dates.*According to flight demand on Travelocity.com from January to December 2021. Savings are subject to change based on departure location, date and destination.

Discover our best American Airlines flight from St. Louis STL to Seattle SEA 

To find the best deals on flights to St. Louis from Seattle with American Airlines, just enter your travel dates, filter by American Airlines, and hit search. You’ll find 1 flights to choose from and can sort by price, flight duration, and arrival or departure time.  

 

Return flights from St. Louis STL to Seattle SEA with American Airlines 

If you’re planning a round trip, booking return flights with American Airlines is usually the most cost-effective option. With airfares ranging from $177 to $247, it’s easy to find a flight that suits your budget. Prices and availability subject to change. Additional terms may apply. 

 

Book one-way American Airlines flights from St. Louis STL to Seattle SEA 

A one-way ticket gives you much greater flexibility—allowing you to choose your return date, destination, and time whenever you’re ready. By booking in advance you can find great deals on one-way tickets too. Right now, a one-way American Airlines flight from St. Louis to Seattle costs from $118. Prices and availability subject to change. Additional terms may apply. 

 

The easy way to find cheap flights to Seattle SEA from  St. Louis STL with American Airlines 

To find a cheap American Airlines flight from St. Louis STL to Seattle SEA, sort your search results by price or filter by budget. Thanks to Travelocity’s Price Match Promise, if you find a better airfare deal anywhere else within 24 hours, we’ll credit or refund the difference. 

 

How to find our best airfare deals on American Airlines flights from St. Louis STL to Seattle SEA 

If you’re looking for cheap flights, it helps to be flexible when it comes to your travel dates. You’ll usually find lower cost tickets when you travel during quieter months such as January, or if you book a flight with a stopover. 

 

Find nonstop flights from St. Louis STL to Seattle SEA with American Airlines 

If you’re keen to be on Seattle soil fast, don’t waste time with a stopover—filter your search results to show direct American Airlines flights only. The journey takes around 4 hour(s) 41 min(s) – so you’ll be there before you know it. 

 

Flexible airline tickets for American Airlines flights from St. Louis STL to Seattle SEA 

Make sure you’re not out of pocket if plans change by choosing a flexible ticket with penalty-free amendment and cancellation options. Use our ‘no change fee’ filter to see which flights have this option.  

 

There are a lot of reasons to book your flights to Seattle SEA from  St. Louis STL with American Airlines on Travelocity 

At Travelocity our vast and up-to-the-minute inventory puts all of our best flight deals in one place. So, whether you’re traveling on business or jetting off with friends and family, you can trust Travelocity to get you there.

American Airlines Airports
Hop on a(n) American Airlines flight today by flying to many destinations out of these domestic and international airports:
Airport Code
Country
Airport Name
Number of Flights
DFWUSADallas-Fort Worth Intl.599
CLTUSACharlotte-Douglas Intl.536
ORDUSAO'Hare Intl.317
PHLUSAPhiladelphia Intl.247
MIAUSAMiami Intl.193
DCAUSARonald Reagan Washington National152
PHXUSASky Harbor Intl.141
LAXUSALos Angeles Intl.81
LGAUSALaGuardia72
BOSUSALogan Intl.57

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