Cheap flights from San Antonio to St. Louis

Good to know

Flight information for San Antonio to St. Louis to help you plan your next trip.
Cheapest round-trip flight $108
Frontier 1 stop 28 hr Nov 14 — Nov 18
The cheapest round-trip flight from San Antonio to St. Louis is currently $108
Cheapest one-way flight $60
Frontier 1 stop 13 hr Nov 13
The cheapest one-way flight from San Antonio to St. Louis is currently $60
Fastest flight 2 hr The fastest nonstop flight from San Antonio to St. Louis takes 2 hr
Nonstop flights Every day There are direct flights on this route every day.

When is the cheapest time to fly?

The cheapest month to fly from San Antonio to St. Louis is typically September. The most expensive one is typically July.
September
Cheapest
Typical prices: $125–255
July
Most expensive
Typical prices: $225–335

Popular airports near San Antonio

  • San Antonio International Airport (SAT)
    San Antonio 19 min 7 mi
  • Austin-Bergstrom International Airport (AUS)
    Austin 1 hr 23 min 72 mi
  • George Bush Intercontinental Airport (IAH)
    Houston 3 hr 11 min 193 mi
  • William P. Hobby Airport (HOU)
    Houston 3 hr 15 min 193 mi

Popular airports near St. Louis

  • St. Louis Lambert International Airport (STL)
    St. Louis 22 min 12 mi
  • General Wayne A. Downing Peoria International Airport (PIA)
    Peoria 2 hr 34 min 143 mi
  • Indianapolis International Airport (IND)
    Indianapolis 3 hr 29 min 222 mi
  • Evansville Regional Airport (EVV)
    Evansville 2 hr 32 min 150 mi

Frequently asked questions about flying from San Antonio to St. Louis

How long does it take to fly from San Antonio to St. Louis?
2 hr is the shortest flight time from San Antonio to St. Louis.
When are the cheapest days to fly from San Antonio to St. Louis?
The cheapest days to fly are usually in September. Typical prices range from $125 to $255.
Which airlines provide the cheapest flights from San Antonio to St. Louis?
The best round-trip deal recently found on Google Flights from San Antonio to St. Louis was with Frontier from $108. The best one-way deal was with Frontier from $60.
When are direct flights from San Antonio to St. Louis available?
There are direct flights from San Antonio to St. Louis on a daily basis.
Which airlines have direct flights from San Antonio to St. Louis?
Southwest flies direct from San Antonio to St. Louis.
What are the cheapest flights from San Antonio to St. Louis?
The cheapest round-trip flight from San Antonio to St. Louis starts at $108 from Thu, Nov 14 to Mon, Nov 18. The cheapest one-way flight starts at $60 and departs on Wed, Nov 13.
When should you visit St. Louis?
Apr–Sep is the most popular time to visit, coinciding with hot, humid summer and events like Fair St. Louis, a huge Fourth of July festival at Forest Park, and the Taste of St. Louis food festival (Sep). Weather in winter is cold, with occasional snow.
How do I find cheap dates to fly from San Antonio to St. Louis
It's easy to use Google Flights to find the cheapest days to fly from San Antonio to St. Louis.
Just click the Departure label near the top of the page to open the calendar. Choose a start date and a return date to see how the round-trip fare changes on those specific days.
Adjust the trip type to see one-way fares. The cheapest available flights are highlighted and easy to spot. Once you settle on dates, click the Search button to see flight options and book the deal.

You can also turn on price tracking to get alerts if the price changes for a route or flight.

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