San Antonio to St Louis runs about 6 times a day, with the first departure around 06:36 and the last around 14:49. One passenger pays between €109.88 and €130.53, every fee included, depending on the operator and the way you travel. The fastest door to door is 5h 14m over 1,314 km, on services run by 1 operator across 1 mode.
What one seat costs
The spread between the cheapest and dearest typical fare on this corridor, across 1 operator and 1 way of making the journey. The operator sets the price on the day.
Typical fares
€109.88 to €130.53
- 122%Moves across the booking window
When it runs, leaving San Antonio
No operator has filed a timetable for this direction yet, so the first and last departure below follow the pattern of the corridor. Read them as the shape of the service day rather than as times to turn up for.
- 06:36First departure
- 14:49Last departure
- 6Services per day
- 33%Run direct
Fares by date
What this journey usually costs, by departure date. It shows which days run dearer.
Typical fares
- about €196.02Tue15
- about €229.65Wed16
- about €225.52Thu17
- about €198.38Fri18
- about €219.03Sat19
- about €200.74Sun20
- about €164.16Mon21
- about €144.10Tue22
- about €154.13Wed23
- about €173.01Thu24
- about €188.94Fri25
- about €178.32Sat26
- about €180.09Sun27
- about €130.53Mon28
- about €125.81Tue29
- about €153.54Wed30
- about €151.77Thu1
- about €147.05Fri2
- about €158.85Sat3
- about €122.27Sun4
- about €109.88Mon5
Based on what this route has cost recently. The operator sets the price on the day, and the live fare is confirmed when you book.
The flight gets you into St Louis. It does not get you a bed, and neither do we.
A room in St Louis for the night the flight gets in
Sort by distance from Union Station and you can see which places are ten minutes on foot and which are not.
Search St Louis on Booking.comOr compare on Expedia
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When to book San Antonio to St Louis
The same search run across the whole booking window, so the shape of the curve is visible rather than described.
- €141.1590 days
- €114.6060 days
- €121.6845 days
- €101.6230 days
- €109.8821 days
- €130.5314 days
- €164.167 days
- €225.523 days
- €196.021 days
- Cheapest lead time
- Fares bottom out around 30 days ahead, at €101.62.
- How much it moves
- The gap between the cheapest and most expensive lead time is 122 percent. The most expensive point is €225.52, 3 days out.
- What that means
- Today sits inside the cheap window, which closes about 30 days before departure. Waiting from here has usually cost money on this corridor rather than saved it.
Book now Fares on this route are lowest around 30 days ahead. You are inside that window.
This corridor, specifically
Facts that apply to San Antonio to St Louis and to no other route on the site.
Clocks
Both ends keep the same time, so the arrival is the departure plus the journey.
The shape of it
1,314 km
1,276 km as the crow flies, 3% further by the route services actually take. The bearing runs north-east.
Who lives at each end
1,526,656 → 279,695
Population at the departure city and at the arrival city, which is usually what decides how often anything runs.
How we know
Observed
Every operator on this corridor is named in a carrier record.
The route
What the journey actually looks like
Direct or connecting, how far the route really runs, and what happens when a connection is missed.
- Direct or connecting
- 33% of the services we sell on this corridor run through without a change. The remaining 67% involve one connection.
- How far it really runs
- The route covers 1,314 km against 1,276 km in a straight line, a detour of 3 percent. Track and road geometry account for the difference.
- Where the change is
- Connections are made at Louisville, Dallas, Houston, Nashville. The gap between arriving and leaving is 47 minutes, of which about 5 is walking.
- If the connection is missed
- The tightest connection we sell here has a 20 percent chance of not being made on the timetable alone. Part of this journey is a self transfer between separate tickets, so leave more time than the minimum and expect to check in again.
Who runs this route
The flight gets in hours before any room is ready. Holding a bag is not what we sell.
Baggage storage near Union Station
Most of the points near Union Station open before the first train and close after the last one.
Check St Louis on StasherOr try Bounce
Partner links. We do not run these networks. We earn a commission on a booking, and the price is the same as going direct.
Questions about San Antonio to St Louis
The questions people actually ask about this trip, answered from the same prices and times the page above is built on rather than written once and left to go stale.
How long does it take to get from San Antonio to St Louis?
The fastest journey from San Antonio to St Louis takes 5h 14m door to door, of which 2h 8m is spent moving, on the flight. Most services take around 5h 22m, because that average includes slower stopping services and journeys with a connection. Times include reaching the terminal and leaving it at the far end.
How much does it cost to travel from San Antonio to St Louis?
The cheapest fare from San Antonio to St Louis is €109.88, as of September 14, 2026. A typical fare across the next three weeks is €178.03. Both figures are the total for one passenger, including taxes, supplier fees and our service fee, so nothing is added at checkout.
What is the cheapest way to get from San Antonio to St Louis?
The cheapest way from San Antonio to St Louis is by flight, at €130.53 for one passenger on October 5, 2026. That journey takes 5h 18m door to door. Cheaper is rarely faster on this corridor, and the comparison table on this page shows what each mode costs against what it saves.
When should I book San Antonio to St Louis?
Fares from San Antonio to St Louis bottom out around 30 days before departure, at €101.62. Across the whole booking window the gap between the cheapest and the most expensive lead time is 122 percent, measured on September 14, 2026. Booking inside the last week has consistently cost more on this corridor.
Which day of the week is cheapest for San Antonio to St Louis?
Monday is the cheapest day to depart from San Antonio to St Louis, at €130.53. That is the median of 21 priced departure days across the next three weeks, as of September 14, 2026. Shifting a departure by one day is usually worth more than shifting the booking by one week.
Which month is cheapest for San Antonio to St Louis?
February is the cheapest of the next 6 months to travel from San Antonio to St Louis, at €89.23 for one passenger. Each month is priced on its fifteenth, so the comparison is like for like rather than a mix of weekends and midweek departures.
Who runs service from San Antonio to St Louis?
1 operators sell services from San Antonio to St Louis across 1 mode: Southwest Airlines. Journey times, fares and fare conditions differ between them, and the operator table on this page compares all of them on speed, flexibility and what is provided on board.
Is there a direct service from San Antonio to St Louis?
33 percent of the services we sell from San Antonio to St Louis are direct. The rest connect at Louisville, Dallas, Houston, Nashville, with about 47 minutes between the two services. Both legs are sold on one booking, so a missed connection is rebooked at no charge.
Which station or terminal do services from San Antonio to St Louis use?
Services from San Antonio to St Louis by flight leave from San Antonio SAT and arrive at St. Louis STL. Allow about 3h 10m in total for reaching the departure terminal and leaving the arrival one, which is already included in every door to door time on this page.
Can I change or refund a ticket from San Antonio to St Louis?
0 of the 1 operators we sell from San Antonio to St Louis allow a change or a refund. A change on a changeable fare costs €5.00. The operator table on this page names which is which, and the condition is shown again before you pay.
Where these numbers come from
Places, coordinates, operators, which operator serves which pair, and every distance on this page are real and come from open data. Where a corridor has a filed timetable the departure times are real too, and ferry fares are the prices the operators publish themselves.
Observed service A carrier record shows this named operator serving this named pair, and we carry that through unchanged.
Where no operator publishes a fare for a corridor, the price here is our own estimate, worked out from the real distance and the real operator through a fare curve that follows lead time, day of the week and season. It tells you roughly what the journey costs. It is not a seat anyone has agreed to sell, and the payment step will not take it.
Defined in full at Door to door, Fares, The booking window, Carbon, Distances
- On this page
- Every figure above was computed for San Antonio to St Louis on September 14, 2026: 1314 km of route against 1276 km in a straight line, 6 services a day, 1 operator a cheapest fare of €109.88, and 5h 14m door to door on the fastest mode. The return direction is computed separately and its numbers are not these numbers.
The flight is the simple part. What you do once you are in St Louis is somebody else's catalog.
Day trips out of St Louis and across United States
Day trips that leave St Louis in the morning and cover a good part of United States by evening.
See St Louis on GetYourGuideOr browse Viator
Partner links. We do not sell tours or tickets. We earn a commission on a booking, and it never changes the price.
The two ends, compared
San Antonio reaches 35 places in 3 countries on services we hold, over distances from 210 to 2,874 km. St Louis reaches 76 places in 5 countries, from 42 to 3,065 km.
Other ways to make this journey
Leaving San Antonio
- 35Places you can leave for
- 3Countries
- 16Operators
Arriving in St Louis
Leaving St Louis
- 76Places you can leave for
- 5Countries
- 22Operators