Book Cheap Alaska Airlines flight from St. Louis (STL) to Seattle (SEA) from CA $171

Find The Best Day to Book a Cheap Alaska Airlines Flights From St. Louis to Seattle

Cheapest Alaska Airlines Flights from St. Louis (STL) to Seattle (SEA)

The cheapest flights to Seattle - Tacoma Intl. found within the past 7 days were CA $541 round trip and CA $171 one way. Prices and availability subject to change. Additional terms may apply.

Frequently asked questions

Can I catch a flight from St. Louis Lambert International Airport to Seattle - Tacoma Intl. Airport (SEA) right now?
For info on any present Sea-Tac Airport quarantine requirements and travel advice, go to the Covid-19 Travel Advisor. Look before you arrange your flight, so you don’t get caught out.
What terminal is Alaska Airlines at St. Louis Lambert International Airport?
If you’re flying between Lambert Field and Sea-Tac Airport with Alaska Airlines, there’s a good chance you’ll be setting off from terminal 1. Your airline should be able to let you know which terminal you’ll be hopping off the plane at.
Are there Alaska Airlines non-stop flights from STL to SEA?
With Alaska Airlines offering direct services between STL and Seattle - Tacoma Intl. Airport (SEA), you can’t go wrong. Kiss goodbye to the stress, hassle and baggage diversions that often come with layovers, and book your ticket today.
How long is an Alaska Airlines flight from STL to SEA?
Your Alaska Airlines flight from STL to SEA will take approximately 5 hours and 32 minutes. But there are tons of things you can do to pass the time. Talking to the person beside you about their travels is one of them. If you’d prefer a different sort of in-flight entertainment, you could always read a book.
What type of aircraft does Alaska Airlines fly from STL to SEA?
Alaska Airlines usually uses either the Boeing 737-900 or the Boeing 737-900 on the route between St. Louis Lambert International Airport and SEA.
How many direct and indirect flights does Alaska Airlines fly from STL to SEA?
If you want to book a jaunt from STL to SEA, you can pick from approximately 3 Alaska Airlines flights every day.
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 Sea-Tac Airport, 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.

Grab a great Alaska Airlines flight from STL to SEA 

To find a great deal on Alaska Airlines flights with Travelocity, simply enter your origin and destination airports, pick your travel dates, and hit search. From here, you can sort by price, flight duration, and arrival/departure time. You can also filter to find nonstop flights. 

Flying Alaska Airlines St. Louis to Seattle gives you 2 fights to choose from. With that direct flight time of 37, you’ll be touching down before you know it.  

 

Find cheap flights with Alaska Airlines between St. Louis and Seattle 

Alaska Airlines has a range of great fares on stacks of flights, and to find the most affordable for you, there are a few tricks you can try. Booking in advance, for example, is a great way to grab a fantastic deal. Also, choose the cheapest month, if you can. One-way flights from St. Louis to Seattle with Alaska Airlines are January.  

The more flexible you are, the more affordable flights you’re likely to find. Consider one-way flights and connecting flights, as well as standard roundtrip and direct options. Even if you’re flying today, cheap last-minute flights are easy to find by entering your travel dates and hitting search.  

 

Reasons to book your Alaska Airlines flights with Travelocity 

Travelocity makes it easy to book a seat, anywhere in the world. The vast inventory, fast search, and advanced filters put some of the best deals on the planet in one place. Whether you’re traveling on business, with friends, family, or on your own, take your pick from some fantastic options. And with free cancellation and pay later options, you can travel more and worry less.  

Alaska Airlines Airports
Hop on a(n) Alaska Airlines flight today by flying to many destinations out of these domestic and international airports:
Airport code
Country
Airport name
Number of flights
SEAUSASeattle - Tacoma Intl.115
ORDUSAO'Hare Intl.44
LAXUSALos Angeles Intl.24
PDXUSAPortland Intl.23
ANCUSATed Stevens Anchorage Intl.22
SFOUSASan Francisco Intl.21
SANUSASan Diego Intl.18
JNUUSAJuneau Intl.10
SJCUSANorman Y. Mineta San Jose Intl.10
GEGUSASpokane Intl.7

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