$211 Cheap United flights St. Louis (STL) to San Antonio (SAT)

View $211 flight on Sat, Jan 17, 2026Opens in a new window

$211 Cheap United flights St. Louis (STL) to San Antonio (SAT)

Prices were available within the past 7 days and start at $211 for one-way flights and $305 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Sat, Jan 17 - Tue, Jan 20
STL
St. Louis
SAT
San Antonio
$305 Roundtrip, found 3 hours ago
$305
Roundtrip
found 3 hours ago
Select United flight, departing Sat, Jan 17 from St. Louis to San Antonio, returning Tue, Jan 20, priced at $305 found 3 hours ago
United
Sat, Jan 17 - Tue, Jan 20
STL
St. Louis
SAT
San Antonio
$310 Roundtrip, found 3 hours ago
$310
Roundtrip
found 3 hours ago
Select United flight, departing Sat, Jan 17 from St. Louis to San Antonio, returning Tue, Jan 20, priced at $310 found 3 hours ago
United
Sat, Jan 17 - Tue, Jan 20
STL
St. Louis
SAT
San Antonio
$337 Roundtrip, found 3 hours ago
$337
Roundtrip
found 3 hours ago
Select United flight, departing Sat, Jan 17 from St. Louis to San Antonio, returning Tue, Jan 20, priced at $337 found 3 hours ago
United
Sat, Jan 17 - Tue, Jan 20
STL
St. Louis
SAT
San Antonio
$343 Roundtrip, found 3 hours ago
$343
Roundtrip
found 3 hours ago
Select United flight, departing Sat, Jan 17 from St. Louis to San Antonio, returning Tue, Jan 20, priced at $343 found 3 hours ago
United
Sat, Jan 17 - Tue, Jan 20
STL
St. Louis
SAT
San Antonio
$345 Roundtrip, found 3 hours ago
$345
Roundtrip
found 3 hours ago
Select United flight, departing Sat, Jan 17 from St. Louis to San Antonio, returning Tue, Jan 20, priced at $345 found 3 hours ago
United
Sat, Jan 17 - Tue, Jan 20
STL
St. Louis
SAT
San Antonio
$367 Roundtrip, found 3 hours ago
$367
Roundtrip
found 3 hours ago
Select United flight, departing Sat, Jan 17 from St. Louis to San Antonio, returning Tue, Jan 20, priced at $367 found 3 hours ago

Find the cheapest month to fly from St. Louis (STL) to San Antonio (SAT)

November is typically the cheapest month to fly

From $150 - $473 per traveler.

Alternative airports near San Antonio

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to San Antonio Intl. SAT. Cheapest and Closest option available. Average driving time to city center is 11 minutes. Flights from $325
SAT
San Antonio Intl.
CheapestClosest
Average driving time to city center11 min
Flights from $325
Flights from St. Louis (STL) to San Antonio (SAT)
Origin airport
Lambert-St. Louis Intl.
Destination airport
San Antonio Intl.
Airlines serving
American Airlines, Delta, Southwest Airlines, United
Popular airline
American Airlines
Distance
1258 km
Average flight time
3 hours 58 mins