Austin (AUS) to Saint Louis (STL), Dec 11–13, 2026: from $135 one way

Austin (AUS) to Saint Louis (STL), Dec 11–13, 2026: from $135 one way on Axel, checked Oct 29, 2026. Lowest published fare: $135 one way, Axel-exclusive, Southwest Airlines, 1 stop, Dec 11, 2026, 1 adult, economy, checked Oct 29, 2026. Flights for 1 adult in economy. Prices are total for all travelers in USD, including required taxes. Basic economy may apply.

See flights for these dates: each price link opens AI flight search for that row's exact dates and travelers. Select the complete itinerary there.

Route overview: Austin to Saint Louis (STL) flight deals

2026-12-11 · one way · Axel-exclusive $145.00

• Southwest Airlines WN438: AUS 2026-12-11 15:15:00 → STL 2026-12-11 17:20:00; nonstop; 125 minutes. Local airport times.

2026-12-13 · one way · Axel-exclusive $155.00

• American Airlines AA3885 / AA2246: AUS 2026-12-13 15:00:00 → STL 2026-12-13 19:36:00; 1 stop(s) via DFW; 276 minutes. Local airport times.
  • AA3885: AUS 2026-12-13 15:00:00 → DFW 2026-12-13 16:15:00; layover at DFW: 100 minutes.
  • AA2246: DFW 2026-12-13 17:55:00 → STL 2026-12-13 19:36:00.

2026-12-13 · one way · Axel-exclusive $165.00

• United Airlines UA1966 / UA4556: AUS 2026-12-13 05:15:00 → STL 2026-12-13 09:49:00; 1 stop(s) via IAH; 274 minutes. Local airport times.
  • UA1966: AUS 2026-12-13 05:15:00 → IAH 2026-12-13 06:28:00; layover at IAH: 72 minutes.
  • UA4556: IAH 2026-12-13 07:40:00 → STL 2026-12-13 09:49:00.

2026-12-12 · one way · Axel-exclusive $145.00

• Southwest Airlines WN437: AUS 2026-12-12 12:50:00 → STL 2026-12-12 14:55:00; nonstop; 125 minutes. Local airport times.

2026-12-11 · one way · Axel-exclusive $145.00

• Southwest Airlines WN436: AUS 2026-12-11 07:35:00 → STL 2026-12-11 09:35:00; nonstop; 120 minutes. Local airport times.

2026-12-12 · one way · Axel-exclusive $145.00

• Southwest Airlines WN436: AUS 2026-12-12 07:10:00 → STL 2026-12-12 09:10:00; nonstop; 120 minutes. Local airport times.

2026-12-13 · one way · Axel-exclusive $145.00

• Southwest Airlines WN436: AUS 2026-12-13 07:35:00 → STL 2026-12-13 09:35:00; nonstop; 120 minutes. Local airport times.

2026-12-13 · one way · Axel-exclusive $145.00

• Southwest Airlines WN438: AUS 2026-12-13 17:00:00 → STL 2026-12-13 19:10:00; nonstop; 130 minutes. Local airport times.

2026-12-13 · one way · Axel-exclusive $135.00

• Southwest Airlines WN2737 / WN742: AUS 2026-12-13 16:25:00 → STL 2026-12-13 20:45:00; 1 stop(s) via BNA; 260 minutes. Local airport times.
  • WN2737: AUS 2026-12-13 16:25:00 → BNA 2026-12-13 18:30:00; layover at BNA: 60 minutes.
  • WN742: BNA 2026-12-13 19:30:00 → STL 2026-12-13 20:45:00.

2026-12-12 · one way · Axel-exclusive $135.00

• Southwest Airlines WN2737 / WN742: AUS 2026-12-12 16:25:00 → STL 2026-12-12 20:45:00; 1 stop(s) via BNA; 260 minutes. Local airport times.
  • WN2737: AUS 2026-12-12 16:25:00 → BNA 2026-12-12 18:30:00; layover at BNA: 60 minutes.
  • WN742: BNA 2026-12-12 19:30:00 → STL 2026-12-12 20:45:00.

2026-12-11 · one way · Axel-exclusive $135.00

• Southwest Airlines WN2360 / WN1498: AUS 2026-12-11 16:25:00 → STL 2026-12-11 21:15:00; 1 stop(s) via DAL; 290 minutes. Local airport times.
  • WN2360: AUS 2026-12-11 16:25:00 → DAL 2026-12-11 17:25:00; layover at DAL: 130 minutes.
  • WN1498: DAL 2026-12-11 19:35:00 → STL 2026-12-11 21:15:00.

2026-12-11 · one way · Axel-exclusive $135.00

• Southwest Airlines WN2737 / WN742: AUS 2026-12-11 16:25:00 → STL 2026-12-11 20:45:00; 1 stop(s) via BNA; 260 minutes. Local airport times.
  • WN2737: AUS 2026-12-11 16:25:00 → BNA 2026-12-11 18:30:00; layover at BNA: 60 minutes.
  • WN742: BNA 2026-12-11 19:30:00 → STL 2026-12-11 20:45:00.

2026-12-11 · one way · Axel-exclusive $135.00

• Southwest Airlines WN4889 / WN2715: AUS 2026-12-11 13:40:00 → STL 2026-12-11 19:10:00; 1 stop(s) via MCI; 330 minutes. Local airport times.
  • WN4889: AUS 2026-12-11 13:40:00 → MCI 2026-12-11 15:30:00; layover at MCI: 155 minutes.
  • WN2715: MCI 2026-12-11 18:05:00 → STL 2026-12-11 19:10:00.

2026-12-12 · one way · Axel-exclusive $135.00

• Southwest Airlines WN4889 / WN2715: AUS 2026-12-12 13:40:00 → STL 2026-12-12 19:10:00; 1 stop(s) via MCI; 330 minutes. Local airport times.
  • WN4889: AUS 2026-12-12 13:40:00 → MCI 2026-12-12 15:30:00; layover at MCI: 155 minutes.
  • WN2715: MCI 2026-12-12 18:05:00 → STL 2026-12-12 19:10:00.

2026-12-13 · one way · Axel-exclusive $135.00

• Southwest Airlines WN2360 / WN1498: AUS 2026-12-13 16:25:00 → STL 2026-12-13 21:15:00; 1 stop(s) via DAL; 290 minutes. Local airport times.
  • WN2360: AUS 2026-12-13 16:25:00 → DAL 2026-12-13 17:25:00; layover at DAL: 130 minutes.
  • WN1498: DAL 2026-12-13 19:35:00 → STL 2026-12-13 21:15:00.

2026-12-12 · one way · Axel-exclusive $135.00

• Southwest Airlines WN2360 / WN1498: AUS 2026-12-12 16:25:00 → STL 2026-12-12 21:15:00; 1 stop(s) via DAL; 290 minutes. Local airport times.
  • WN2360: AUS 2026-12-12 16:25:00 → DAL 2026-12-12 17:25:00; layover at DAL: 130 minutes.
  • WN1498: DAL 2026-12-12 19:35:00 → STL 2026-12-12 21:15:00.

2026-12-13 · one way · Axel-exclusive $135.00

• Southwest Airlines WN4889 / WN2715: AUS 2026-12-13 13:40:00 → STL 2026-12-13 19:10:00; 1 stop(s) via MCI; 330 minutes. Local airport times.
  • WN4889: AUS 2026-12-13 13:40:00 → MCI 2026-12-13 15:30:00; layover at MCI: 155 minutes.
  • WN2715: MCI 2026-12-13 18:05:00 → STL 2026-12-13 19:10:00.

2026-12-12 · one way · Axel-exclusive $155.00

• American Airlines AA3885 / AA2246: AUS 2026-12-12 15:00:00 → STL 2026-12-12 19:36:00; 1 stop(s) via DFW; 276 minutes. Local airport times.
  • AA3885: AUS 2026-12-12 15:00:00 → DFW 2026-12-12 16:15:00; layover at DFW: 100 minutes.
  • AA2246: DFW 2026-12-12 17:55:00 → STL 2026-12-12 19:36:00.

2026-12-11 · one way · Axel-exclusive $155.00

• American Airlines AA3885 / AA2246: AUS 2026-12-11 15:00:00 → STL 2026-12-11 19:36:00; 1 stop(s) via DFW; 276 minutes. Local airport times.
  • AA3885: AUS 2026-12-11 15:00:00 → DFW 2026-12-11 16:15:00; layover at DFW: 100 minutes.
  • AA2246: DFW 2026-12-11 17:55:00 → STL 2026-12-11 19:36:00.

2026-12-11 · one way · Axel-exclusive $165.00

• United Airlines UA1966 / UA4556: AUS 2026-12-11 05:15:00 → STL 2026-12-11 09:49:00; 1 stop(s) via IAH; 274 minutes. Local airport times.
  • UA1966: AUS 2026-12-11 05:15:00 → IAH 2026-12-11 06:28:00; layover at IAH: 72 minutes.
  • UA4556: IAH 2026-12-11 07:40:00 → STL 2026-12-11 09:49:00.

2026-12-13 · one way · Axel-exclusive $165.00

• United Airlines UA1878 / UA1857: AUS 2026-12-13 06:34:00 → STL 2026-12-13 12:22:00; 1 stop(s) via ORD; 348 minutes. Local airport times.
  • UA1878: AUS 2026-12-13 06:34:00 → ORD 2026-12-13 09:21:00; layover at ORD: 91 minutes.
  • UA1857: ORD 2026-12-13 10:52:00 → STL 2026-12-13 12:22:00.

2026-12-11 · one way · Axel-exclusive $165.00

• United Airlines UA1878 / UA1857: AUS 2026-12-11 06:34:00 → STL 2026-12-11 12:22:00; 1 stop(s) via ORD; 348 minutes. Local airport times.
  • UA1878: AUS 2026-12-11 06:34:00 → ORD 2026-12-11 09:21:00; layover at ORD: 91 minutes.
  • UA1857: ORD 2026-12-11 10:52:00 → STL 2026-12-11 12:22:00.

2026-12-12 · one way · Axel-exclusive $165.00

• United Airlines UA1966 / UA4556: AUS 2026-12-12 05:15:00 → STL 2026-12-12 09:49:00; 1 stop(s) via IAH; 274 minutes. Local airport times.
  • UA1966: AUS 2026-12-12 05:15:00 → IAH 2026-12-12 06:28:00; layover at IAH: 72 minutes.
  • UA4556: IAH 2026-12-12 07:40:00 → STL 2026-12-12 09:49:00.

2026-12-12 · one way · Axel-exclusive $165.00

• United Airlines UA1878 / UA1857: AUS 2026-12-12 06:34:00 → STL 2026-12-12 12:22:00; 1 stop(s) via ORD; 348 minutes. Local airport times.
  • UA1878: AUS 2026-12-12 06:34:00 → ORD 2026-12-12 09:21:00; layover at ORD: 91 minutes.
  • UA1857: ORD 2026-12-12 10:52:00 → STL 2026-12-12 12:22:00.

Travelers: prices on this page are totals for 1 adult. For a different party, open this trip for 2 adults · 3 adults · 4 adults · 2 adults + 1 child · 2 adults + 2 children; each link opens AI flight search for these dates and those travelers, and the customer link to share comes from those results.

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