SAT - STL

$125 Find Cheap Flights from San Antonio to St. Louis - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from San Antonio to St. Louis departing on 10/7. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$258
Typical prices: $236-$386
American Airlines
Thu 8/20Tue 8/25
SAT - STL • 1 stop
Cheapest non-stop
$274
Typical prices: $386-$481
Southwest
Sat 8/8Wed 8/12
SAT - STL • Non-stop
Nonstop flights
Every day
You can fly direct with Southwest. Average duration is 2h 08m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
Top layover airports
Las Vegas (LAS)
Cheapest • Avg $242 (round-trip)
Dallas (DAL)
Shortest trip • 4h 08m (one-way)
Insights
Insights
Insights
Insights
When to travel
February
Cheapest • 28% price drop
March
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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We hope you love your trip to St. Louis!
Flight Deals
Booking Insights
Expert advice
Flight Deals

Cheap Flights from San Antonio to St. Louis (SAT-STL)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from San Antonio to St. Louis that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from San Antonio to St. Louis

Thu, Aug 20 - Tue, Aug 25
American Airlines Logo
5:00 am - 9:24 am
SAT
-
STL
4h 24m
1 stop
American Airlines Logo
5:42 am - 10:01 am
STL
-
SAT
4h 19m
1 stop
$258American Airlines
Sat, Aug 8 - Mon, Aug 10
Frontier Logo
4:26 pm - 11:59 pm
SAT
-
STL
7h 33m
1 stop
Frontier Logo
7:10 pm - 8:37 pm
STL
-
SAT
25h 27m
1 stop
$259Frontier
Sat, Aug 8 - Wed, Aug 12
Southwest Logo
7:20 am - 9:25 am
SAT
-
STL
2h 05mnonstop
Southwest Logo
8:45 pm - 10:55 pm
STL
-
SAT
2h 10mnonstop
$274Southwest
Sat, Aug 8 - Wed, Aug 12
Southwest Logo
7:20 am - 9:25 am
SAT
-
STL
2h 05mnonstop
Southwest Logo
8:35 am - 2:35 pm
STL
-
SAT
6h 00m
1 stop
$278Southwest
Wed, Aug 5 - Sat, Aug 8
Frontier Logo
9:32 pm - 6:15 pm
SAT
-
STL
20h 43m
1 stop
Frontier Logo
8:08 pm - 6:54 pm
STL
-
SAT
22h 46m
1 stop
$281Frontier
Tue, Oct 13 - Thu, Oct 15
Frontier Logo
12:16 pm - 7:15 pm
SAT
-
STL
6h 59m
1 stop
Frontier Logo
8:34 pm - 9:39 am
STL
-
SAT
13h 05m
1 stop
$289Frontier
Sun, Sep 13 - Thu, Sep 17
Frontier Logo
10:34 pm - 11:51 am
SAT
-
STL
13h 17m
1 stop
Frontier Logo
8:34 pm - 9:02 am
STL
-
SAT
12h 28m
1 stop
$290Frontier
Sat, Aug 8 - Wed, Aug 12
Southwest Logo
12:55 pm - 7:45 pm
SAT
-
STL
6h 50m
1 stop
Southwest Logo
2:50 pm - 9:25 pm
STL
-
SAT
6h 35m
2 stops
$293Southwest
Mon, Oct 12 - Thu, Oct 15
Frontier Logo
12:43 pm - 1:17 am
SAT
-
STL
12h 34m
1 stop
Frontier Logo
8:34 pm - 9:39 am
STL
-
SAT
13h 05m
1 stop
$294Frontier
Thu, Sep 3 - Tue, Sep 8
Southwest Logo
3:30 pm - 5:40 pm
SAT
-
STL
2h 10mnonstop
Southwest Logo
8:40 am - 10:50 am
STL
-
SAT
2h 10mnonstop
$297Southwest
Booking Insights

KAYAK's insights & trends for San Antonio to St. Louis flights

Get data-powered insights and trends into flights from San Antonio to St. Louis to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from San Antonio to St. Louis?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from San Antonio to St. Louis departing in August.

What’s the cheapest day of the week to fly from San Antonio to St. Louis?

The average price of all round-trip flights from San Antonio to St. Louis clicked on KAYAK for each day over the last 12 months.

Your flight ticket price will generally be cheaper if you fly to St. Louis on a Thursday and more expensive on a Sunday. On your return trip to San Antonio, you should consider flying back on a Saturday, and avoid Sundays for better deals.

What is the cheapest month to fly from San Antonio to St. Louis?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from San Antonio to St. Louis, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from San Antonio to St. Louis is February, where tickets cost $313 (return) on average. On the other hand, the most expensive months are November and June, where the average cost of round-trip tickets is $558 and $549 respectively.

Can I save money by flying with a layover from San Antonio to St. Louis?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $417, prices are generally cheapest when you fly direct.

Find deals
Expert advice

Expert advice for your flight from San Antonio to St. Louis

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Brandon Schultz

Brandon Schultz

Expert on SAT

Brandon Schultz is an award-winning food and travel writer based in New York City. His work has appeared in Forbes, AAA, Thrillist, Travel + Leisure, and The Daily Meal, among many others, and he is the author of 6 books, including 3 cookbooks.

Read more
Yulia Denisyuk

Yulia Denisyuk

Expert on STL

Yulia is a freelance journalist who’s dispatched from 90+ countries. Her work focuses on cultures, adventure trips and air travel, appearing in NatGeo, NYT, CNTraveler, and more. For past assignments, she’s stayed with nomads in Mongolia and learned the art of Imigongo in Rwanda. She’s based in Chicago; in winter she often questions that decision.

Read more

Good to know

Low seasonJune
Cheapest flight$125
Best time to beat the crowds but there is an average 27% increase in price.
Most popular time to fly with an average 12% increase in price.
Flight from San Antonio to St. Louis

When to book flights from San Antonio to St. Louis

Are your dates flexible? Find out the best times to travel from San Antonio to St. Louis based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from San Antonio to St. Louis

  • What is the cheapest flight from San Antonio to St. Louis?

    In the last 5 days, the lowest price for a flight from San Antonio to St. Louis was $126 for a one-way ticket and $258 for a round-trip.

  • Do I need a passport to fly between San Antonio and St. Louis?

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

  • Which airports will I be using when flying from San Antonio to St. Louis?

    San Antonio airport is called San Antonio and the only airport in St. Louis is Lambert-St Louis.

  • Which airlines offer Wi-Fi service onboard planes from San Antonio to St. Louis?

    American Airlines, Delta, and JetBlue offer inflight Wi-Fi service on the San Antonio to St. Louis flight route.

  • Which aircraft models fly most regularly from San Antonio to St. Louis?

    The Airbus A319 is the aircraft model that flies most regularly on the San Antonio to St. Louis flight route.

  • Which airline alliances offer flights from San Antonio to St. Louis?

    Star Alliance, and oneworld are the airline alliances operating flights between San Antonio and St. Louis, with Star Alliance being the most commonly used for this route.

  • On which days can I fly direct from San Antonio to St. Louis?

    There are nonstop flights from San Antonio to St. Louis on a daily basis.

  • Which is the best airline for flights from San Antonio to St. Louis, Southwest or United Airlines?

    The two airlines most popular with KAYAK users for flights from San Antonio to St. Louis are Southwest and United Airlines. With an average price for the route of $436 and an overall rating of 8.0, Southwest is the most popular choice. United Airlines is also a great choice for the route, with an average price of $348 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from San Antonio to St. Louis?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from San Antonio to St. Louis.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from San Antonio to St. Louis?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to St. Louis from San Antonio is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from San Antonio to St. Louis?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to St. Louis with an airline and back to San Antonio with another airline. Booking your flights between San Antonio and STL can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from San Antonio to St. Louis?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to St. Louis from San Antonio up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from San Antonio to St. Louis

  • Looking for a cheap flight? 25% of our users found flights on this route for $199 or less one-way and $348 or less round-trip.

Prefer to fly direct from San Antonio to St. Louis?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from San Antonio to Lambert-St Louis.
Find which airlines fly direct from San Antonio Airport to Lambert-St Louis Airport, which days they fly and book direct flights.

Direct departures

San Antonio to Lambert-St Louis

Monday

Southwest

Southwest

Tuesday

Southwest

Southwest

Wednesday

Southwest

Southwest

Thursday

Southwest

Southwest

Friday

Southwest

Southwest

Saturday

Southwest

Southwest

Sunday

Southwest

Southwest

See more direct flights

Direct returns

Lambert-St Louis to San Antonio

Monday

Southwest

Southwest

Tuesday

Southwest

Southwest

Wednesday

Southwest

Southwest

Thursday

Southwest

Southwest

Friday

Southwest

Southwest

Saturday

Southwest

Southwest

Sunday

Southwest

Southwest

See more direct flights

Everything you need to know for your flight from San Antonio to St. Louis

Information on your arrival and departure airports

San Antonio (SAT)
St. Louis (STL)