$108 Find Cheap Flights from San Antonio to St. Louis - Compare and Save

These are the earliest and latest flight times available from San Antonio to St. Louis:

• Earliest: departs at 6:40 am and lands at 8:46 am
• Latest: departs at 6:00 pm and lands at 8:06 pm.

The flight takes about 2h 06m.

Two cabin classes are available on flights from San Antonio to St. Louis:

• Economy Class
• First Class

A nonstop flight from San Antonio to St. Louis takes 2h 06m, covering 786 miles.

No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID or another TSA-accepted form of identification.

Round-trip flights from San Antonio to St. Louis range from $350 to $552, with an average of $442 over the past 12 months. Anything below $350 counts as a good deal.

On this route, layover flights are cheaper than nonstop options on average. Layover fares average $242 round-trip via Las Vegas Harry Reid Intl (LAS), compared to $491 for nonstop.

There is no standard. Checked-bag policies vary by airline on this route. Most carriers charge $45–$90 for the first checked bag in economy. Premium fares and elite-status bookings typically include a free checked bag.

The Airbus A220-300 family is used most often on this route, operated mainly by Delta. Other aircraft seen on the route include Boeing 737 MAX 8 variants.

Morning is the busiest departure period on San Antonio to St. Louis flights, with 50% of flights leaving in that window. Afternoon departures account for 50%, evening flights for 0%, and night flights for 0%.

Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $226 to $1,122. That means the highest observed fare was about 5x higher than the lowest one.

One-way fares from San Antonio to St. Louis are currently lower than usual. Average one-way flight prices are about $129, which is 46% below the typical average for this route.

Lambert-St Louis Airport (STL) hosts 5 major car rental companies, with daily rates starting from around $31 for economy cars. Top options include:

• Hertz
• Budget
• Alamo
• Enterprise Rent-A-Car
• Payless

Flights from San Antonio to St. Louis usually depart from San Antonio (SAT) and arrive at Lambert-St Louis (STL).

One-stop flights from San Antonio to St. Louis most commonly connect through:

• Dallas/Fort Worth (DFW) - 70% of one-stop connections
• Atlanta Hartsfield-Jackson (ATL) - 9% of one-stop connections
• Houston George Bush Intcntl (IAH) - 8% of one-stop connections
• Houston Hobby (HOU) - 5% of one-stop connections

Yes. Flexible dates can save you up to 28% on flights from San Antonio to St. Louis. Saturday is the cheapest departure day at $386 round-trip on average, while Monday is the most expensive at $529, a difference of $143.

Cheaper weekend fares like these are typical of routes dominated by weekday business travel.

Only Southwest operates flights between San Antonio and St. Louis.

Flying via Dallas Love Field (DAL) gives the shortest average 1-stop total travel time at 3h 56m, compared with 4h 23m via Dallas/Fort Worth (DFW) and 4h 30m via Houston George Bush Intcntl (IAH).

Some of the most popular sights in St. Louis are Busch Stadium, Enterprise Center and America's Center Convention Complex. These are among the most viewed places in St. Louis on KAYAK.

Among airlines operating San Antonio to St. Louis flights:

• Southwest: offers free seat selection

Extra legroom and free seat selection availability depends on fare class and route.

Here are some options for this route, based on selected ticket types and cabin classes:

• Southwest: a cabin bag in Economy Class class

Bag allowance can vary by ticket type, cabin class, route and airline, so always check the fare details before booking.