Your next trip, last seen at €111
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The lowest fare we observed for each month. Open a month to see its days, then pick your outbound and return. A day with no price is one we will search for you.
Short answer
We have seen Southwest Airlines fares from St Louis to San Antonio, non-stop. The lowest fare our own searches returned is €111, seen on 14 Sep 2026. The average across the fares we caught is €159. November 2026 is the cheapest month in our observations, at €111. These are prices our searches returned on the dates shown, not quotes; run a live search for today's fare.
Short answer
We have seen Southwest Airlines fares from St Louis to San Antonio, non-stop. The lowest fare our own searches returned is €111, seen on 14 Sep 2026. The average across the fares we caught is €159. November 2026 is the cheapest month in our observations, at €111. These are prices our searches returned on the dates shown, not quotes; run a live search for today's fare.
About this route
Explore the fares we observed from St Louis to San Antonio. Prices move often, so pick your dates to see the latest options.
- Route distance
- 1,276 km
- Reported fastest flight
- 2h 10m
- Airlines seen
- Southwest Airlines
- Alternative airports
- SUS
Route-level information; individual journeys vary.
Published schedules report non-stop service with Southwest Airlines. Check current timetables.
A clearer picture of your fare
Frequently asked
How much is a flight from St Louis to San Antonio?
The lowest fare we have observed is €111, found on 14 Sep 2026. Prices move, so read it as a floor rather than a quote.
When is the cheapest month to fly from St Louis to San Antonio?
In our observations November 2026 is the cheapest month so far, at €111.
Are there direct flights from St Louis to San Antonio?
Yes. We have seen non-stop flights on this route, flown by Southwest Airlines.
Which airlines fly from St Louis to San Antonio?
These are the carriers we have seen on the route: Southwest Airlines.
How observed prices work, what "No data" means and what a fare includes: Read the flight price guide
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Recently observed fares. Prices may change.
Last checked: 30 Sep 2026