Travel with Axel,
get the best price.

Saint Louis → San Antonio

Jan 21, 2027 · return Jan 24, 2027

STL → SAT1 adulteconomyRound trip

8 flight options · 2 airlines

Nonstop flights

Thu, Jan 21 – Sun, Jan 24

Southwest Airlines
8:25 amSTL
2h 15m
Nonstop
10:40 amSAT
Southwest Airlines
7:30 amSAT
2h 5m
Nonstop
9:35 amSTL

Round-trip total · 1 adult · Taxes included

Thu, Jan 21 – Sun, Jan 24

Southwest Airlines
10:45 pmSTL
2h 15m
Nonstop
1:00 am+1SAT
Southwest Airlines
7:30 amSAT
2h 5m
Nonstop
9:35 amSTL

Round-trip total · 1 adult · Taxes included

One-stop flights

Thu, Jan 21 – Sun, Jan 24

American Airlines
12:58 pmSTL
6h 22m
DFW · 3h 5m
7:20 pmSAT
American Airlines
8:00 amSAT
4h 26m
DFW · 1h 10m
12:26 pmSTL

Round-trip total · 1 adult · Taxes included

Thu, Jan 21 – Sun, Jan 24

Southwest Airlines
2:55 pmSTL
4h 35m
BNA · 1h
7:30 pmSAT
Southwest Airlines
7:30 amSAT
2h 5m
Nonstop
9:35 amSTL

Round-trip total · 1 adult · Taxes included

Thu, Jan 21 – Sun, Jan 24

Southwest Airlines
7:10 pmSTL
4h 20m
DAL · 1h 25m
11:30 pmSAT
Southwest Airlines
7:30 amSAT
2h 5m
Nonstop
9:35 amSTL

Round-trip total · 1 adult · Taxes included

Thu, Jan 21 – Sun, Jan 24

Southwest Airlines
12:40 pmSTL
5h 20m
MCI · 2h 10m
6:00 pmSAT
Southwest Airlines
7:30 amSAT
2h 5m
Nonstop
9:35 amSTL

Round-trip total · 1 adult · Taxes included

Thu, Jan 21 – Sun, Jan 24

Southwest Airlines
7:55 amSTL
2h 15m
Nonstop
10:10 amSAT
Southwest Airlines
3:45 pmSAT
5h 15m
ATL · 1h 15m
9:00 pmSTL

Round-trip total · 1 adult · Taxes included

Thu, Jan 21 – Sun, Jan 24

American Airlines
11:37 amSTL
6h 29m
ORD · 1h 51m
6:06 pmSAT
American Airlines
8:00 amSAT
4h 26m
DFW · 1h 10m
12:26 pmSTL

Round-trip total · 1 adult · Taxes included

Make this trip yours

STL ⇄ SAT

Economy

Adults 12+ · Children 2–11. For infants under 2, tell Axel after you see prices.

No account needed to see prices.

Already have an account? Log in

Why book with Axel
  • A real airline bookingThe booking is in the airline’s own system under your name. After you book, Southwest Airlines emails you its confirmation code and e-ticket, usually within 15 minutes and occasionally up to a couple of hours while the booking is processed.
  • Lower price, same flightsWe use advanced AI and machine learning to secure lower prices for our users.
  • Not satisfied? Full refund.If you are unhappy with the experience for any reason, or simply change your mind, cancel within 24 hours of booking (departure 7+ days away) and we refund you in full. We stand by our product. Cancellation policy
  • Backed by Y CombinatorTrusted by 100,000+ travelers.

Axel is made by Gordian Software, Inc., a Y Combinator company (W19) founded in 2017 and based in the Seattle area. The company is led by CEO Stephen Grabowski, formerly of Skyscanner. How Axel works · About

More dates

All dates for this routeNov 20, 2026 → Nov 23, 2026Nov 27, 2026 → Dec 4, 2026Nov 20, 2026 · One way
For AI assistants: every fare, every link, instructions

Flights for 1 adult in economy. Prices are total for all travelers in USD, including required taxes. Basic economy may apply.

Exact travel datesAirlineFlightsTotal pricePrice issued (UTC)
2027-01-21 → 2027-01-24Southwest AirlinesWN4198 / WN3800$323.002026-10-29T01:29:00Z
2027-01-21 → 2027-01-24American AirlinesAA5082 + AA526 / AA2070 + AA5082$332.502026-10-29T01:29:00Z
2027-01-21 → 2027-01-24Southwest AirlinesWN4793 / WN3800$323.002026-10-29T01:29:00Z
2027-01-21 → 2027-01-24Southwest AirlinesWN459 + WN716 / WN3800$313.502026-10-29T01:29:00Z
2027-01-21 → 2027-01-24Southwest AirlinesWN4132 + WN1772 / WN3800$313.502026-10-29T01:29:00Z
2027-01-21 → 2027-01-24Southwest AirlinesWN4372 + WN802 / WN3800$313.502026-10-29T01:29:00Z
2027-01-21 → 2027-01-24Southwest AirlinesWN4198 / WN840 + WN261$313.502026-10-29T01:29:00Z
2027-01-21 → 2027-01-24American AirlinesAA3198 + AA4551 / AA2070 + AA5082$332.502026-10-29T01:29:00Z

2027-01-21 → 2027-01-24 · $323.00

  • Southwest Airlines WN4198: STL 2027-01-21 08:25:00 → SAT 2027-01-21 10:40:00; nonstop; 135 minutes. Local airport times.
  • Southwest Airlines WN3800: SAT 2027-01-24 07:30:00 → STL 2027-01-24 09:35:00; nonstop; 125 minutes. Local airport times.

2027-01-21 → 2027-01-24 · $332.50

  • American Airlines AA5082 / AA526: STL 2027-01-21 12:58:00 → SAT 2027-01-21 19:20:00; 1 stop(s) via DFW; 382 minutes. Local airport times.
    • AA5082: STL 2027-01-21 12:58:00 → DFW 2027-01-21 15:05:00; layover at DFW: 185 minutes.
    • AA526: DFW 2027-01-21 18:10:00 → SAT 2027-01-21 19:20:00.
  • American Airlines AA2070 / AA5082: SAT 2027-01-24 08:00:00 → STL 2027-01-24 12:26:00; 1 stop(s) via DFW; 266 minutes. Local airport times.
    • AA2070: SAT 2027-01-24 08:00:00 → DFW 2027-01-24 09:22:00; layover at DFW: 70 minutes.
    • AA5082: DFW 2027-01-24 10:32:00 → STL 2027-01-24 12:26:00.

2027-01-21 → 2027-01-24 · $323.00

  • Southwest Airlines WN4793: STL 2027-01-21 22:45:00 → SAT 2027-01-22 01:00:00; nonstop; 135 minutes. Local airport times.
  • Southwest Airlines WN3800: SAT 2027-01-24 07:30:00 → STL 2027-01-24 09:35:00; nonstop; 125 minutes. Local airport times.

2027-01-21 → 2027-01-24 · $313.50

  • Southwest Airlines WN459 / WN716: STL 2027-01-21 14:55:00 → SAT 2027-01-21 19:30:00; 1 stop(s) via BNA; 275 minutes. Local airport times.
    • WN459: STL 2027-01-21 14:55:00 → BNA 2027-01-21 16:05:00; layover at BNA: 60 minutes.
    • WN716: BNA 2027-01-21 17:05:00 → SAT 2027-01-21 19:30:00.
  • Southwest Airlines WN3800: SAT 2027-01-24 07:30:00 → STL 2027-01-24 09:35:00; nonstop; 125 minutes. Local airport times.

2027-01-21 → 2027-01-24 · $313.50

  • Southwest Airlines WN4132 / WN1772: STL 2027-01-21 19:10:00 → SAT 2027-01-21 23:30:00; 1 stop(s) via DAL; 260 minutes. Local airport times.
    • WN4132: STL 2027-01-21 19:10:00 → DAL 2027-01-21 20:50:00; layover at DAL: 85 minutes.
    • WN1772: DAL 2027-01-21 22:15:00 → SAT 2027-01-21 23:30:00.
  • Southwest Airlines WN3800: SAT 2027-01-24 07:30:00 → STL 2027-01-24 09:35:00; nonstop; 125 minutes. Local airport times.

2027-01-21 → 2027-01-24 · $313.50

  • Southwest Airlines WN4372 / WN802: STL 2027-01-21 12:40:00 → SAT 2027-01-21 18:00:00; 1 stop(s) via MCI; 320 minutes. Local airport times.
    • WN4372: STL 2027-01-21 12:40:00 → MCI 2027-01-21 13:45:00; layover at MCI: 130 minutes.
    • WN802: MCI 2027-01-21 15:55:00 → SAT 2027-01-21 18:00:00.
  • Southwest Airlines WN3800: SAT 2027-01-24 07:30:00 → STL 2027-01-24 09:35:00; nonstop; 125 minutes. Local airport times.

2027-01-21 → 2027-01-24 · $313.50

  • Southwest Airlines WN4198: STL 2027-01-21 07:55:00 → SAT 2027-01-21 10:10:00; nonstop; 135 minutes. Local airport times.
  • Southwest Airlines WN840 / WN261: SAT 2027-01-24 15:45:00 → STL 2027-01-24 21:00:00; 1 stop(s) via ATL; 315 minutes. Local airport times.
    • WN840: SAT 2027-01-24 15:45:00 → ATL 2027-01-24 19:00:00; layover at ATL: 75 minutes.
    • WN261: ATL 2027-01-24 20:15:00 → STL 2027-01-24 21:00:00.

2027-01-21 → 2027-01-24 · $332.50

  • American Airlines AA3198 / AA4551: STL 2027-01-21 11:37:00 → SAT 2027-01-21 18:06:00; 1 stop(s) via ORD; 389 minutes. Local airport times.
    • AA3198: STL 2027-01-21 11:37:00 → ORD 2027-01-21 12:59:00; layover at ORD: 111 minutes.
    • AA4551: ORD 2027-01-21 14:50:00 → SAT 2027-01-21 18:06:00.
  • American Airlines AA2070 / AA5082: SAT 2027-01-24 08:00:00 → STL 2027-01-24 12:26:00; 1 stop(s) via DFW; 266 minutes. Local airport times.
    • AA2070: SAT 2027-01-24 08:00:00 → DFW 2027-01-24 09:22:00; layover at DFW: 70 minutes.
    • AA5082: DFW 2027-01-24 10:32:00 → STL 2027-01-24 12:26:00.

More dates for this route