$90 Cheap flights from Seattle - Tacoma Intl. to Lambert-St. Louis Intl. (SEA to STL)

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Find The Best Dates To Fly from Seattle - Tacoma Intl. to Lambert-St. Louis Intl.

Compare Flight Prices from Seattle to St. Louis

Affordable Airfare Tickets from SEA to STL Airport

The cheapest flights to Lambert-St. Louis Intl. found within the past 7 days were $187 round trip and $90 one way. Prices and availability subject to change. Additional terms may apply.

Wed, Aug 27 - Tue, Sep 2
SEA
Seattle
STL
St. Louis
$187 Roundtrip, found 4 days ago
$187
Roundtrip
found 4 days ago
Select United flight, departing Wed, Aug 27 from Seattle to St. Louis, returning Tue, Sep 2, priced at $187 found 4 days ago
Fri, Jun 13 - Tue, Jun 17
SEA
Seattle
STL
St. Louis
$189 Roundtrip, found 2 days ago
$189
Roundtrip
found 2 days ago
Select Southwest Airlines flight, departing Fri, Jun 13 from Seattle to St. Louis, returning Tue, Jun 17, priced at $189 found 2 days ago
Thu, Aug 28 - Tue, Sep 2
SEA
Seattle
STL
St. Louis
$189 Roundtrip, found 1 day ago
$189
Roundtrip
found 1 day ago
Select American Airlines flight, departing Thu, Aug 28 from Seattle to St. Louis, returning Tue, Sep 2, priced at $189 found 1 day ago
Thu, Aug 28 - Tue, Sep 2
SEA
Seattle
STL
St. Louis
$191 Roundtrip, found 1 day ago
$191
Roundtrip
found 1 day ago
Select Delta flight, departing Thu, Aug 28 from Seattle to St. Louis, returning Tue, Sep 2, priced at $191 found 1 day ago
Wed, May 21 - Tue, May 27
SEA
Seattle
STL
St. Louis
$200 Roundtrip, found 1 day ago
$200
Roundtrip
found 1 day ago
Select American Airlines flight, departing Wed, May 21 from Seattle to St. Louis, returning Tue, May 27, priced at $200 found 1 day ago
Thu, May 29 - Fri, May 30
SEA
Seattle
STL
St. Louis
$201 Roundtrip, found 2 days ago
$201
Roundtrip
found 2 days ago
Select Delta flight, departing Thu, May 29 from Seattle to St. Louis, returning Fri, May 30, priced at $201 found 2 days ago
Thu, Jun 12 - Mon, Jun 16
SEA
Seattle
STL
St. Louis
$203 Roundtrip, found 2 days ago
$203
Roundtrip
found 2 days ago
Select United flight, departing Thu, Jun 12 from Seattle to St. Louis, returning Mon, Jun 16, priced at $203 found 2 days ago
Wed, May 14 - Fri, May 16
SEA
Seattle
STL
St. Louis
$208 Roundtrip, found 3 days ago
$208
Roundtrip
found 3 days ago
Select Southwest Airlines flight, departing Wed, May 14 from Seattle to St. Louis, returning Fri, May 16, priced at $208 found 3 days ago
Thu, May 29 - Fri, May 30
SEA
Seattle
STL
St. Louis
$211 Roundtrip, found 2 days ago
$211
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Thu, May 29 from Seattle to St. Louis, returning Fri, May 30, priced at $211 found 2 days ago
Tue, May 20 - Sat, May 31
SEA
Seattle
STL
St. Louis
$213 Roundtrip, found 2 days ago
$213
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Tue, May 20 from Seattle to St. Louis, returning Sat, May 31, priced at $213 found 2 days ago

Lambert-St. Louis Intl. flight + hotel packages - economy flights

Price found within the past 48 hours. Click for updated prices.
River City Casino & Hotel

River City Casino & Hotel

4 out of 5
per person
May 27 - May 29
just found
Roundtrip non-stop flight included
Seattle (SEA) to St. Louis (STL)
The Wildwood Hotel

The Wildwood Hotel

3.5 out of 5
per person
May 27 - May 29
just found
Roundtrip non-stop flight included
Seattle (SEA) to St. Louis (STL)
Ameristar Casino Resort and Spa

Ameristar Casino Resort and Spa

4.5 out of 5
per person
May 27 - May 29
just found
Roundtrip non-stop flight included
Seattle (SEA) to St. Louis (STL)
Hilton Garden Inn Chesterfield

Hilton Garden Inn Chesterfield

3 out of 5
per person
May 27 - May 29
just found
Roundtrip non-stop flight included
Seattle (SEA) to St. Louis (STL)
DoubleTree by Hilton Hotel St. Louis - Chesterfield

DoubleTree by Hilton Hotel St. Louis - Chesterfield

4 out of 5
per person
May 27 - May 29
just found
Roundtrip non-stop flight included
Seattle (SEA) to St. Louis (STL)
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Frequently asked questions

Can I catch a flight from Sea-Tac Airport to Lambert Field right now?
It’s always wise to know about any travel advice reports and quarantine requirements in place in your destination city. Ensure you visit the Covid-19 Travel Advisor for up-to-date information on flying to Lambert-St. Louis Intl. Airport (STL).
Are there direct flights from Seattle - Tacoma Intl. Airport (SEA) to St. Louis Lambert International Airport?
If you’re hoping to get from SEA to St. Louis Lambert International Airport in the shortest possible time, you’ll be glad to know multiple airlines operate nonstop flights. Select your favorite seat with Southwest Airlines or Alaska Airlines.
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 St. Louis Lambert International Airport, please visit our Customer Service Portal.
How long is the flight from SEA to St. Louis Lambert International Airport?
If you’re flying from SEA to Lambert-St. Louis Intl. Airport (STL), you can expect the trip to take about 5 hours and 50 minutes. If this sounds longer than you anticipated, why not put it to good use? Read up on where you’re headed, organize some last-minute details and get as much shut-eye as possible before the adventure starts.
What is the flight distance from SEA to Lambert-St. Louis Intl. Airport (STL)?
Between Seattle - Tacoma Intl. Airport (SEA) and Lambert Field, the flight distance is roughly 1,700 mi. So, order a glass of Champagne and kick back. You have some tough decisions to make — start on a new series, finish your novel or catch forty winks?
What airlines fly from Seattle - Tacoma Intl. Airport (SEA) to Lambert-St. Louis Intl. Airport (STL)?
There are several airlines that offer direct flights from Seattle - Tacoma Intl. Airport (SEA) to Lambert-St. Louis Intl. Airport (STL). Southwest Airlines (WN) is among the best of them, and operates around 30 flights each month. You should also browse the deals on offer from Alaska Airlines (AS). Another popular airline, it operates 30 flights every month on the Seattle to St. Louis route. Be sure to compare the two to find your perfect fare.
What airlines have practices regarding COVID-19 in place and use social distancing?
From the moment you enter the departure terminal to when you leave the arrivals terminal, if you’re flying with Southwest Airlines, American Airlines or Delta you can be sure that COVID-19 measures and social distancing rules have been adhered to. Many airlines have introduced capped capacity flights and keeping the middle seat empty.
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.

Flight information from Seattle to St. Louis

 

Traveling From
Seattle - Tacoma Intl.
Traveling To
Lambert-St. Louis Intl.
Shortest Flight Time
 hours mins
Earliest Departure Time
Latest Departure Time
Lowest Flight Price
$187

Route Info

Flight path for flights from Seattle-Tacoma International Airport to Lambert-St. Louis International Airport


Origin:
SEA - Seattle-Tacoma International Airport
Destination:
STL - Lambert-St. Louis International Airport
Distance:
1,714.00 miles


Airlines & Aircraft Used on SEA to STL Flight Routes


Airline Carrier
Aircraft
Alaska Airlines
Airbus A320-100/200
Alaska Airlines
Boeing 737 all pax models
Alaska Airlines
De Havilland Canada DHC-8-300 Dash 8 / 8Q
American Airlines
Avro RJ100 Avroliner

Discover our best flights from Seattle SEA to St. Louis STL. 

With 20 airlines to choose from on Travelocity, you can easily find the best option for you. Use our filters to sort by price, compare airlines, and find the most convenient flight times. 

 

Find our best return flights from Seattle SEA to St. Louis STL at the right price  

Airfares to St. Louis STL from Seattle SEA currently cost between $187 and $213. It’s usually cheaper to book a round trip than two separate one-way flights. Prices and availability subject to change. Additional terms may apply. 

 

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

If you want to be flexible about when you return, or keep your travel options open ended, a one-way flight could be just the ticket! You’ll find one-way airfares from Seattle SEA to St. Louis STL on Travelocity starting at $90. Prices and availability subject to change. Additional terms may apply. 

 

Get to St. Louis STL from Seattle SEA quicker with direct flights. 

Get to St. Louis faster, without the hassle of changing planes and moving baggage, by booking a direct flight. Expect your direct flight to STL from SEA to take around hour(s) min(s).  

 

Find our cheapest airfares for flights from Seattle SEA to St. Louis STL

Find cheap flight deals by using our search filters to sort results starting with the lowest price airfares to STL from SEA. Our Price Match Promise means if you find a lower rate on Travelocity.com or on another US-based website within 24 hours of booking, we’ll credit or refund the difference.  

 

Get our best airfare deals for your flight from Seattle SEA to St. Louis STL today 

If you’re flexible about when you travel, August is usually the cheapest month to fly from Seattle SEA to St. Louis STL. If you need to be more specific, search by date and arrival and departure times.Then, compare prices across different airlines, and sort results by lowest price first. 

 

Book flexible airline tickets for flights to St. Louis STL from Seattle SEA 

Some airlines let you change your travel dates without charging a fee. Use our ‘no change fee’ filter to see which flights to STL from SEA have this option.  

 

Travel with confidence when you book flights to St. Louis STL from Seattle SEA with Travelocity 

We’ve secured fantastic deals with all the main airline carriers and it’s easy to compare, choose, and book with Travelocity. With 24/7 customer service and our free 'App', we’ll always keep you moving. 

*Price based on the lowest price found within past 24 hours and based upon one night stay for two adults over the next thirty days. Prices and availability subject to change. Additional terms may apply.