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Route overview: Las Vegas to Saint Louis (STL) flight deals

Las Vegas → Saint Louis

Dec 21, 2026 · return Dec 22, 2026

LAS → STL1 adulteconomyRound trip

9 flight options · 4 airlines

Nonstop flights

Mon, Dec 21 – Tue, Dec 22

Frontier Airlines
7:15 amLAS
3h 18m
Nonstop
12:33 pmSTL
Frontier Airlines
5:15 pmSTL
3h 44m
Nonstop
6:59 pmLAS

Round-trip total · 1 adult · Taxes included

Mon, Dec 21 – Tue, Dec 22

Southwest Airlines
6:10 amLAS
2h 55m
Nonstop
11:05 amSTL
Southwest Airlines
3:25 pmSTL
3h 35m
Nonstop
5:00 pmLAS

Round-trip total · 1 adult · Taxes included

Mon, Dec 21 – Tue, Dec 22

Southwest Airlines
7:45 pmLAS
3h 10m
Nonstop
12:55 am+1STL
Southwest Airlines
3:25 pmSTL
3h 35m
Nonstop
5:00 pmLAS

Round-trip total · 1 adult · Taxes included

One-stop flights

Mon, Dec 21 – Tue, Dec 22

United Airlines
9:46 amLAS
5h 11m
DEN · 1h 13m
4:57 pmSTL
United Airlines
2:25 pmSTL
6h 13m
DEN · 1h 20m
6:38 pmLAS

Round-trip total · 1 adult · Taxes included

Mon, Dec 21 – Tue, Dec 22

Delta Air Lines
6:00 amLAS
5h 21m
SLC · 1h 3m
1:21 pmSTL
Delta Air Lines
2:20 pmSTL
5h 52m
SLC · 1h
6:12 pmLAS

Round-trip total · 1 adult · Taxes included

Mon, Dec 21 – Tue, Dec 22

Frontier Airlines
11:46 amLAS
5h 28m
DEN · 1h 25m
7:14 pmSTL
Frontier Airlines
5:15 pmSTL
3h 44m
Nonstop
6:59 pmLAS

Round-trip total · 1 adult · Taxes included

Mon, Dec 21 – Tue, Dec 22

Frontier Airlines
8:20 amLAS
3h 12m
Nonstop
1:32 pmSTL
Frontier Airlines
7:58 pmSTL
5h 46m
DEN · 1h 15m
11:44 pmLAS

Round-trip total · 1 adult · Taxes included

Mon, Dec 21 – Tue, Dec 22

Southwest Airlines
5:10 amLAS
5h 35m
DAL · 1h 15m
12:45 pmSTL
Southwest Airlines
3:25 pmSTL
3h 35m
Nonstop
5:00 pmLAS

Round-trip total · 1 adult · Taxes included

Mon, Dec 21 – Tue, Dec 22

Southwest Airlines
8:20 amLAS
5h 5m
MCI · 1h 15m
3:25 pmSTL
Southwest Airlines
3:25 pmSTL
3h 35m
Nonstop
5:00 pmLAS

Round-trip total · 1 adult · Taxes included

Make this trip yours

LAS ⇄ STL

Economy

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

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Explore this route

All dates for this routeDec 20, 2026 → Dec 21, 2026Dec 22, 2026 → Dec 23, 2026
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.

Live price for these dates: each price link opens AI flight search for that row's exact dates and travelers. Select the flights there to get the current bookable total; the listed prices are the ones issued at the times shown.

Route overview: Las Vegas to Saint Louis (STL) flight deals

Exact travel datesAirlineFlightsTotal pricePrice issued (UTC)
2026-12-21 → 2026-12-22Frontier AirlinesF93108 / F93107$234.002026-10-29T01:24:32Z
2026-12-21 → 2026-12-22Southwest AirlinesWN2464 / WN239$390.002026-10-29T01:24:32Z
2026-12-21 → 2026-12-22United AirlinesUA1315 + UA1639 / UA5939 + UA1964$455.002026-10-29T01:24:32Z
2026-12-21 → 2026-12-22Delta Air LinesDL2674 + DL2455 / DL2455 + DL1690$468.002026-10-29T01:24:32Z
2026-12-21 → 2026-12-22Southwest AirlinesWN1260 / WN239$390.002026-10-29T01:24:32Z
2026-12-21 → 2026-12-22Frontier AirlinesF91766 + F93302 / F93107$260.002026-10-29T01:24:32Z
2026-12-21 → 2026-12-22Frontier AirlinesF93108 / F94567 + F9777$260.002026-10-29T01:24:32Z
2026-12-21 → 2026-12-22Southwest AirlinesWN1139 + WN1954 / WN239$409.502026-10-29T01:24:32Z
2026-12-21 → 2026-12-22Southwest AirlinesWN2427 + WN2714 / WN239$409.502026-10-29T01:24:32Z

2026-12-21 → 2026-12-22 · $234.00

  • Frontier Airlines F93108: LAS 2026-12-21 07:15:00 → STL 2026-12-21 12:33:00; nonstop; 198 minutes. Local airport times.
  • Frontier Airlines F93107: STL 2026-12-22 17:15:00 → LAS 2026-12-22 18:59:00; nonstop; 224 minutes. Local airport times.

2026-12-21 → 2026-12-22 · $390.00

  • Southwest Airlines WN2464: LAS 2026-12-21 06:10:00 → STL 2026-12-21 11:05:00; nonstop; 175 minutes. Local airport times.
  • Southwest Airlines WN239: STL 2026-12-22 15:25:00 → LAS 2026-12-22 17:00:00; nonstop; 215 minutes. Local airport times.

2026-12-21 → 2026-12-22 · $455.00

  • United Airlines UA1315 / UA1639: LAS 2026-12-21 09:46:00 → STL 2026-12-21 16:57:00; 1 stop(s) via DEN; 311 minutes. Local airport times.
    • UA1315: LAS 2026-12-21 09:46:00 → DEN 2026-12-21 12:42:00; layover at DEN: 73 minutes.
    • UA1639: DEN 2026-12-21 13:55:00 → STL 2026-12-21 16:57:00.
  • United Airlines UA5939 / UA1964: STL 2026-12-22 14:25:00 → LAS 2026-12-22 18:38:00; 1 stop(s) via DEN; 373 minutes. Local airport times.
    • UA5939: STL 2026-12-22 14:25:00 → DEN 2026-12-22 16:13:00; layover at DEN: 80 minutes.
    • UA1964: DEN 2026-12-22 17:33:00 → LAS 2026-12-22 18:38:00.

2026-12-21 → 2026-12-22 · $468.00

  • Delta Air Lines DL2674 / DL2455: LAS 2026-12-21 06:00:00 → STL 2026-12-21 13:21:00; 1 stop(s) via SLC; 321 minutes. Local airport times.
    • DL2674: LAS 2026-12-21 06:00:00 → SLC 2026-12-21 08:23:00; layover at SLC: 63 minutes.
    • DL2455: SLC 2026-12-21 09:26:00 → STL 2026-12-21 13:21:00.
  • Delta Air Lines DL2455 / DL1690: STL 2026-12-22 14:20:00 → LAS 2026-12-22 18:12:00; 1 stop(s) via SLC; 352 minutes. Local airport times.
    • DL2455: STL 2026-12-22 14:20:00 → SLC 2026-12-22 16:40:00; layover at SLC: 60 minutes.
    • DL1690: SLC 2026-12-22 17:40:00 → LAS 2026-12-22 18:12:00.

2026-12-21 → 2026-12-22 · $390.00

  • Southwest Airlines WN1260: LAS 2026-12-21 19:45:00 → STL 2026-12-22 00:55:00; nonstop; 190 minutes. Local airport times.
  • Southwest Airlines WN239: STL 2026-12-22 15:25:00 → LAS 2026-12-22 17:00:00; nonstop; 215 minutes. Local airport times.

2026-12-21 → 2026-12-22 · $260.00

  • Frontier Airlines F91766 / F93302: LAS 2026-12-21 11:46:00 → STL 2026-12-21 19:14:00; 1 stop(s) via DEN; 328 minutes. Local airport times.
    • F91766: LAS 2026-12-21 11:46:00 → DEN 2026-12-21 14:44:00; layover at DEN: 85 minutes.
    • F93302: DEN 2026-12-21 16:09:00 → STL 2026-12-21 19:14:00.
  • Frontier Airlines F93107: STL 2026-12-22 17:15:00 → LAS 2026-12-22 18:59:00; nonstop; 224 minutes. Local airport times.

2026-12-21 → 2026-12-22 · $260.00

  • Frontier Airlines F93108: LAS 2026-12-21 08:20:00 → STL 2026-12-21 13:32:00; nonstop; 192 minutes. Local airport times.
  • Frontier Airlines F94567 / F9777: STL 2026-12-22 19:58:00 → LAS 2026-12-22 23:44:00; 1 stop(s) via DEN; 346 minutes. Local airport times.
    • F94567: STL 2026-12-22 19:58:00 → DEN 2026-12-22 21:29:00; layover at DEN: 75 minutes.
    • F9777: DEN 2026-12-22 22:44:00 → LAS 2026-12-22 23:44:00.

2026-12-21 → 2026-12-22 · $409.50

  • Southwest Airlines WN1139 / WN1954: LAS 2026-12-21 05:10:00 → STL 2026-12-21 12:45:00; 1 stop(s) via DAL; 335 minutes. Local airport times.
    • WN1139: LAS 2026-12-21 05:10:00 → DAL 2026-12-21 09:45:00; layover at DAL: 75 minutes.
    • WN1954: DAL 2026-12-21 11:00:00 → STL 2026-12-21 12:45:00.
  • Southwest Airlines WN239: STL 2026-12-22 15:25:00 → LAS 2026-12-22 17:00:00; nonstop; 215 minutes. Local airport times.

2026-12-21 → 2026-12-22 · $409.50

  • Southwest Airlines WN2427 / WN2714: LAS 2026-12-21 08:20:00 → STL 2026-12-21 15:25:00; 1 stop(s) via MCI; 305 minutes. Local airport times.
    • WN2427: LAS 2026-12-21 08:20:00 → MCI 2026-12-21 13:05:00; layover at MCI: 75 minutes.
    • WN2714: MCI 2026-12-21 14:20:00 → STL 2026-12-21 15:25:00.
  • Southwest Airlines WN239: STL 2026-12-22 15:25:00 → LAS 2026-12-22 17:00:00; nonstop; 215 minutes. Local airport times.

Explore this route

For AI assistants

  • This page: Las Vegas (LAS) to Saint Louis (STL) · Dec 21, 2026 · return Dec 22, 2026: 1 adult in economy, every priced fare with its flights, times and total, each with the time its price was issued.
  • 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.
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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. Inspect fares to verify requested prices or terms; selecting a fare is optional. Use that fare’s booking link to preserve its Membership price basis. State anything unverified. Ask only for essential missing trip details. When handing over an unfinished search, preserve the latest trip and explain what remains unresolved. Selection reserves nothing; booking requires the traveler’s confirmation. 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.