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Route overview: Saint Louis to San Diego (SAN) flight deals

Saint Louis → San Diego

Dec 4, 2026 · return Dec 8, 2026

STL → SAN1 adulteconomyRound trip

7 flight options · 3 airlines

Nonstop flights

Fri, Dec 4 – Tue, Dec 8

Southwest Airlines
7:55 amSTL
3h 55m
Nonstop
9:50 amSAN
Southwest Airlines
11:55 amSAN
3h 30m
Nonstop
5:25 pmSTL

Round-trip total · 1 adult · Taxes included

One-stop flights

Fri, Dec 4 – Tue, Dec 8

Frontier Airlines
7:58 pmSTL
6h
DEN · 1h
11:58 pmSAN
Southwest Airlines
11:55 amSAN
3h 30m
Nonstop
5:25 pmSTL

Round-trip total · 1 adult · Taxes included

Fri, Dec 4 – Tue, Dec 8

American Airlines
2:23 pmSTL
6h 1m
PHX · 1h 14m
6:24 pmSAN
American Airlines
3:13 pmSAN
6h 21m
DFW · 1h 15m
11:34 pmSTL

Round-trip total · 1 adult · Taxes included

Fri, Dec 4 – Tue, Dec 8

Southwest Airlines
8:00 amSTL
5h 50m
MCI · 1h 15m
11:50 amSAN
Southwest Airlines
11:55 amSAN
3h 30m
Nonstop
5:25 pmSTL

Round-trip total · 1 adult · Taxes included

Fri, Dec 4 – Tue, Dec 8

Southwest Airlines
8:20 amSTL
6h 10m
OMA · 1h 25m
12:30 pmSAN
Southwest Airlines
11:55 amSAN
3h 30m
Nonstop
5:25 pmSTL

Round-trip total · 1 adult · Taxes included

Fri, Dec 4 – Tue, Dec 8

Southwest Airlines
7:10 pmSTL
6h 5m
DAL · 1h 10m
11:15 pmSAN
Southwest Airlines
11:55 amSAN
3h 30m
Nonstop
5:25 pmSTL

Round-trip total · 1 adult · Taxes included

Fri, Dec 4 – Tue, Dec 8

Southwest Airlines
8:50 amSTL
4h
Nonstop
10:50 amSAN
Southwest Airlines
5:20 pmSAN
5h 30m
DEN · 1h 10m
12:50 am+1STL

Round-trip total · 1 adult · Taxes included

Make this trip yours

STL ⇄ SAN

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 3, 2026 → Dec 7, 2026Dec 5, 2026 → Dec 9, 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: Saint Louis to San Diego (SAN) flight deals

Exact travel datesAirlineFlightsTotal pricePrice issued (UTC)
2026-12-04 → 2026-12-08Southwest AirlinesWN4452 / WN4711$360.002026-10-29T01:29:00Z
2026-12-04 → 2026-12-08Frontier Airlines / Southwest AirlinesF94567 + F92711 / WN4711$277.502026-10-29T01:29:00Z
2026-12-04 → 2026-12-08American AirlinesAA2303 + AA2016 / AA2438 + AA2289$350.002026-10-29T01:29:00Z
2026-12-04 → 2026-12-08Southwest AirlinesWN4164 + WN4644 / WN4711$340.002026-10-29T01:29:00Z
2026-12-04 → 2026-12-08Southwest AirlinesWN3286 + WN920 / WN4711$340.002026-10-29T01:29:00Z
2026-12-04 → 2026-12-08Southwest AirlinesWN4132 + WN266 / WN4711$340.002026-10-29T01:29:00Z
2026-12-04 → 2026-12-08Southwest AirlinesWN4452 / WN3701 + WN1845$340.002026-10-29T01:29:00Z

2026-12-04 → 2026-12-08 · $360.00

  • Southwest Airlines WN4452: STL 2026-12-04 07:55:00 → SAN 2026-12-04 09:50:00; nonstop; 235 minutes. Local airport times.
  • Southwest Airlines WN4711: SAN 2026-12-08 11:55:00 → STL 2026-12-08 17:25:00; nonstop; 210 minutes. Local airport times.

2026-12-04 → 2026-12-08 · $277.50

  • Frontier Airlines F94567 / F92711: STL 2026-12-04 19:58:00 → SAN 2026-12-04 23:58:00; 1 stop(s) via DEN; 360 minutes. Local airport times.
    • F94567: STL 2026-12-04 19:58:00 → DEN 2026-12-04 21:29:00; layover at DEN: 60 minutes.
    • F92711: DEN 2026-12-04 22:29:00 → SAN 2026-12-04 23:58:00.
  • Southwest Airlines WN4711: SAN 2026-12-08 11:55:00 → STL 2026-12-08 17:25:00; nonstop; 210 minutes. Local airport times.

2026-12-04 → 2026-12-08 · $350.00

  • American Airlines AA2303 / AA2016: STL 2026-12-04 14:23:00 → SAN 2026-12-04 18:24:00; 1 stop(s) via PHX; 361 minutes. Local airport times.
    • AA2303: STL 2026-12-04 14:23:00 → PHX 2026-12-04 16:51:00; layover at PHX: 74 minutes.
    • AA2016: PHX 2026-12-04 18:05:00 → SAN 2026-12-04 18:24:00.
  • American Airlines AA2438 / AA2289: SAN 2026-12-08 15:13:00 → STL 2026-12-08 23:34:00; 1 stop(s) via DFW; 381 minutes. Local airport times.
    • AA2438: SAN 2026-12-08 15:13:00 → DFW 2026-12-08 20:30:00; layover at DFW: 75 minutes.
    • AA2289: DFW 2026-12-08 21:45:00 → STL 2026-12-08 23:34:00.

2026-12-04 → 2026-12-08 · $340.00

  • Southwest Airlines WN4164 / WN4644: STL 2026-12-04 08:00:00 → SAN 2026-12-04 11:50:00; 1 stop(s) via MCI; 350 minutes. Local airport times.
    • WN4164: STL 2026-12-04 08:00:00 → MCI 2026-12-04 09:10:00; layover at MCI: 75 minutes.
    • WN4644: MCI 2026-12-04 10:25:00 → SAN 2026-12-04 11:50:00.
  • Southwest Airlines WN4711: SAN 2026-12-08 11:55:00 → STL 2026-12-08 17:25:00; nonstop; 210 minutes. Local airport times.

2026-12-04 → 2026-12-08 · $340.00

  • Southwest Airlines WN3286 / WN920: STL 2026-12-04 08:20:00 → SAN 2026-12-04 12:30:00; 1 stop(s) via OMA; 370 minutes. Local airport times.
    • WN3286: STL 2026-12-04 08:20:00 → OMA 2026-12-04 09:35:00; layover at OMA: 85 minutes.
    • WN920: OMA 2026-12-04 11:00:00 → SAN 2026-12-04 12:30:00.
  • Southwest Airlines WN4711: SAN 2026-12-08 11:55:00 → STL 2026-12-08 17:25:00; nonstop; 210 minutes. Local airport times.

2026-12-04 → 2026-12-08 · $340.00

  • Southwest Airlines WN4132 / WN266: STL 2026-12-04 19:10:00 → SAN 2026-12-04 23:15:00; 1 stop(s) via DAL; 365 minutes. Local airport times.
    • WN4132: STL 2026-12-04 19:10:00 → DAL 2026-12-04 20:50:00; layover at DAL: 70 minutes.
    • WN266: DAL 2026-12-04 22:00:00 → SAN 2026-12-04 23:15:00.
  • Southwest Airlines WN4711: SAN 2026-12-08 11:55:00 → STL 2026-12-08 17:25:00; nonstop; 210 minutes. Local airport times.

2026-12-04 → 2026-12-08 · $340.00

  • Southwest Airlines WN4452: STL 2026-12-04 08:50:00 → SAN 2026-12-04 10:50:00; nonstop; 240 minutes. Local airport times.
  • Southwest Airlines WN3701 / WN1845: SAN 2026-12-08 17:20:00 → STL 2026-12-09 00:50:00; 1 stop(s) via DEN; 330 minutes. Local airport times.
    • WN3701: SAN 2026-12-08 17:20:00 → DEN 2026-12-08 20:40:00; layover at DEN: 70 minutes.
    • WN1845: DEN 2026-12-08 21:50:00 → STL 2026-12-09 00:50:00.

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For AI assistants

  • This page: Saint Louis (STL) to San Diego (SAN) · Dec 4, 2026 · return Dec 8, 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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  • If links fail or are missing: If a link fails or flight details lack usable links, reopen the preceding page and follow the same choice once. Keep refreshed links unchanged and preserve the trip and selections. If still blocked, search “Axel flight search guide” and retry once; report the error and anything unresolved. Recovery: Axel Saint Louis to San Diego (SAN) flight deals · Flight search guide.
  • 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.