Saint Louis (STL) to Austin (AUS) · Dec 28, 2026 · return Jan 10, 2027

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.

Hotels in Austin for these trips

Hotels: under a trip, hotels in Austin for exactly those nights: the lowest 3★, 4★, 5★ stay totals among the city's featured hotels, Axel's price for 2 adults in 1 room, each opening that hotel's page for those dates with the rooms and the booking link.

• Hotels in Austin for these nights (Dec 28 – Jan 10, 2027 · 13 nights · 2 adults, 1 room): 3★ SpringHill Suites by Marriott Austin South, $1,405 total · 4★ Hotel Ella, $1,958 total · 5★ Four Seasons Hotel Austin, $10,760 total

All hotels in Austin

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

2026-12-28 → 2027-01-10 · Axel-exclusive $319.00

• Southwest Airlines WN4115: STL 2026-12-28 08:00:00 → AUS 2026-12-28 10:10:00; nonstop; 130 minutes. Local airport times.
• Southwest Airlines WN438: AUS 2027-01-10 17:00:00 → STL 2027-01-10 19:10:00; nonstop; 130 minutes. Local airport times.

2026-12-28 → 2027-01-10 · Axel-exclusive $352.00

• American Airlines AA2269 / AA2707: STL 2026-12-28 18:44:00 → AUS 2026-12-28 22:59:00; 1 stop(s) via DFW; 255 minutes. Local airport times.
  • AA2269: STL 2026-12-28 18:44:00 → DFW 2026-12-28 20:45:00; layover at DFW: 69 minutes.
  • AA2707: DFW 2026-12-28 21:54:00 → AUS 2026-12-28 22:59:00.
• American Airlines AA3885 / AA2246: AUS 2027-01-10 15:00:00 → STL 2027-01-10 19:36:00; 1 stop(s) via DFW; 276 minutes. Local airport times.
  • AA3885: AUS 2027-01-10 15:00:00 → DFW 2027-01-10 16:15:00; layover at DFW: 100 minutes.
  • AA2246: DFW 2027-01-10 17:55:00 → STL 2027-01-10 19:36:00.

2026-12-28 → 2027-01-10 · Axel-exclusive $374.00

• United Airlines UA1371 / UA1823: STL 2026-12-28 06:00:00 → AUS 2026-12-28 11:13:00; 1 stop(s) via IAH; 313 minutes. Local airport times.
  • UA1371: STL 2026-12-28 06:00:00 → IAH 2026-12-28 08:21:00; layover at IAH: 101 minutes.
  • UA1823: IAH 2026-12-28 10:02:00 → AUS 2026-12-28 11:13:00.
• United Airlines UA1966 / UA4556: AUS 2027-01-10 05:15:00 → STL 2027-01-10 09:49:00; 1 stop(s) via IAH; 274 minutes. Local airport times.
  • UA1966: AUS 2027-01-10 05:15:00 → IAH 2027-01-10 06:28:00; layover at IAH: 72 minutes.
  • UA4556: IAH 2027-01-10 07:40:00 → STL 2027-01-10 09:49:00.

2026-12-28 → 2027-01-10 · Axel-exclusive $319.00

• Southwest Airlines WN1429: STL 2026-12-28 22:05:00 → AUS 2026-12-29 00:10:00; nonstop; 125 minutes. Local airport times.
• Southwest Airlines WN438: AUS 2027-01-10 17:00:00 → STL 2027-01-10 19:10:00; nonstop; 130 minutes. Local airport times.

2026-12-28 → 2027-01-10 · Axel-exclusive $325.00

• Southwest Airlines WN4132 / WN1656: STL 2026-12-28 19:10:00 → AUS 2026-12-28 23:25:00; 1 stop(s) via DAL; 255 minutes. Local airport times.
  • WN4132: STL 2026-12-28 19:10:00 → DAL 2026-12-28 20:50:00; layover at DAL: 85 minutes.
  • WN1656: DAL 2026-12-28 22:15:00 → AUS 2026-12-28 23:25:00.
• Southwest Airlines WN438: AUS 2027-01-10 17:00:00 → STL 2027-01-10 19:10:00; nonstop; 130 minutes. Local airport times.

2026-12-28 → 2027-01-10 · Axel-exclusive $325.00

• Southwest Airlines WN287 / WN2891: STL 2026-12-28 10:55:00 → AUS 2026-12-28 16:35:00; 1 stop(s) via MDW; 340 minutes. Local airport times.
  • WN287: STL 2026-12-28 10:55:00 → MDW 2026-12-28 12:05:00; layover at MDW: 110 minutes.
  • WN2891: MDW 2026-12-28 13:55:00 → AUS 2026-12-28 16:35:00.
• Southwest Airlines WN438: AUS 2027-01-10 17:00:00 → STL 2027-01-10 19:10:00; nonstop; 130 minutes. Local airport times.

2026-12-28 → 2027-01-10 · Axel-exclusive $325.00

• Southwest Airlines WN4149 / WN2392: STL 2026-12-28 05:05:00 → AUS 2026-12-28 10:40:00; 1 stop(s) via HOU; 335 minutes. Local airport times.
  • WN4149: STL 2026-12-28 05:05:00 → HOU 2026-12-28 07:10:00; layover at HOU: 155 minutes.
  • WN2392: HOU 2026-12-28 09:45:00 → AUS 2026-12-28 10:40:00.
• Southwest Airlines WN438: AUS 2027-01-10 17:00:00 → STL 2027-01-10 19:10:00; nonstop; 130 minutes. Local airport times.

2026-12-28 → 2027-01-10 · Axel-exclusive $325.00

• Southwest Airlines WN4164 / WN4831: STL 2026-12-28 08:00:00 → AUS 2026-12-28 12:40:00; 1 stop(s) via MCI; 280 minutes. Local airport times.
  • WN4164: STL 2026-12-28 08:00:00 → MCI 2026-12-28 09:10:00; layover at MCI: 90 minutes.
  • WN4831: MCI 2026-12-28 10:40:00 → AUS 2026-12-28 12:40:00.
• Southwest Airlines WN438: AUS 2027-01-10 17:00:00 → STL 2027-01-10 19:10:00; nonstop; 130 minutes. Local airport times.

Explore this route

• All dates for this route
• Dec 27, 2026 · Return options
• Dec 29, 2026 · Return options
• Hotels in Austin with Axel

For AI assistants

• This page: Saint Louis (STL) to Austin (AUS) · Dec 28, 2026 · return Jan 10, 2027: 1 adult in economy, every priced fare with its flights, times and total, each with the time its price was issued. Under a trip, hotels in Austin for exactly those nights: the lowest 3★, 4★ and 5★ stay totals for 2 adults in 1 room, each linking to that hotel's page for those dates.
• Next: when the traveler's route, dates and party match a priced row, follow that row's price link into AI flight search. Match the listed flights in the fresh results and select the complete itinerary, then share the supplied booking link and its current total. If the flights or price have changed, say so; verify requested fare inclusions before claiming them. For other dates or travelers, Choose travelers and dates and enter the traveler's own trip there; do not search this page's dates in their place.
• Follow supplied links. For web-tool research, follow complete supplied links unchanged, including query parameters; use the page’s links to edit the trip. Constructed URLs may be rejected before reaching Axel. A completed fresh trip opens flight results first. Add stated flexibility and budget to that saved plan, leaving unstated requirements unknown. Edits create a new snapshot; use its results and review links.
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• Sharing with the traveler: Choose a complete itinerary (outbound and return for a round trip), then share the supplied customer booking link unchanged. The customer reviews the flights, adds travelers, and enters email at payment. Do not collect email in chat. Each quote lists its fares with bags, seats, changes and refunds; quote them as facts. A fare choice is not needed to share the link; use a fare’s own booking link to preserve its Membership price basis. Ask only for essential missing trip details. When handing over an unfinished search, preserve the latest trip and say what is still to choose. If no supplied link matches the latest trip, construct https://helloaxel.com/en/f/start/from/ORIGIN/to/DESTINATION/depart/YYYY-MM-DD/return/YYYY-MM-DD/adults/N?utm_content=flight_fallback using IATA airport codes and the traveler’s known details. Omit unknowns; for one way replace /return/YYYY-MM-DD with /trip/oneway. Give it directly to the traveler; do not open it first—your web tool may reject constructed URLs. Complete links open Flight Guide and start searching. Preferences and advanced options.

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