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Saint Louis → San Diego

Jan 21, 2027 · return Feb 4, 2027

STL → SAN1 adulteconomyRound trip

7 flight options · 3 airlines

Nonstop flights

Thu, Jan 21 – Thu, Feb 4

Southwest Airlines
7:55 amSTL
3h 55m
Nonstop
9:50 amSAN
Southwest Airlines
6:20 pmSAN
3h 25m
Nonstop
11:45 pmSTL

Round-trip total · 1 adult · Taxes included

One-stop flights

Thu, Jan 21 – Thu, Feb 4

Frontier Airlines
7:58 pmSTL
6h
DEN · 1h
11:58 pmSAN
American Airlines
3:13 pmSAN
6h 21m
DFW · 1h 15m
11:34 pmSTL

Round-trip total · 1 adult · Taxes included

Thu, Jan 21 – Thu, Feb 4

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

Thu, Jan 21 – Thu, Feb 4

Southwest Airlines
8:00 amSTL
5h 50m
MCI · 1h 15m
11:50 amSAN
Southwest Airlines
6:20 pmSAN
3h 25m
Nonstop
11:45 pmSTL

Round-trip total · 1 adult · Taxes included

Thu, Jan 21 – Thu, Feb 4

Southwest Airlines
8:00 amSTL
6h 30m
LAS · 1h 40m
12:30 pmSAN
Southwest Airlines
6:20 pmSAN
3h 25m
Nonstop
11:45 pmSTL

Round-trip total · 1 adult · Taxes included

Thu, Jan 21 – Thu, Feb 4

Southwest Airlines
8:20 amSTL
6h 10m
OMA · 1h 25m
12:30 pmSAN
Southwest Airlines
6:20 pmSAN
3h 25m
Nonstop
11:45 pmSTL

Round-trip total · 1 adult · Taxes included

Thu, Jan 21 – Thu, Feb 4

Southwest Airlines
7:10 pmSTL
6h 5m
DAL · 1h 10m
11:15 pmSAN
Southwest Airlines
6:20 pmSAN
3h 25m
Nonstop
11:45 pmSTL

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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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 → 2027-02-04Southwest AirlinesWN4452 / WN3823$342.002026-10-29T01:29:00Z
2027-01-21 → 2027-02-04Frontier Airlines / American AirlinesF94567 + F92711 / AA2438 + AA2289$258.882026-10-29T01:29:00Z
2027-01-21 → 2027-02-04American AirlinesAA2303 + AA2016 / AA2438 + AA2289$332.502026-10-29T01:29:00Z
2027-01-21 → 2027-02-04Southwest AirlinesWN4164 + WN4644 / WN3823$323.002026-10-29T01:29:00Z
2027-01-21 → 2027-02-04Southwest AirlinesWN4249 + WN352 / WN3823$323.002026-10-29T01:29:00Z
2027-01-21 → 2027-02-04Southwest AirlinesWN3286 + WN920 / WN3823$323.002026-10-29T01:29:00Z
2027-01-21 → 2027-02-04Southwest AirlinesWN4132 + WN266 / WN3823$323.002026-10-29T01:29:00Z

2027-01-21 → 2027-02-04 · $342.00

  • Southwest Airlines WN4452: STL 2027-01-21 07:55:00 → SAN 2027-01-21 09:50:00; nonstop; 235 minutes. Local airport times.
  • Southwest Airlines WN3823: SAN 2027-02-04 18:20:00 → STL 2027-02-04 23:45:00; nonstop; 205 minutes. Local airport times.

2027-01-21 → 2027-02-04 · $258.88

  • Frontier Airlines F94567 / F92711: STL 2027-01-21 19:58:00 → SAN 2027-01-21 23:58:00; 1 stop(s) via DEN; 360 minutes. Local airport times.
    • F94567: STL 2027-01-21 19:58:00 → DEN 2027-01-21 21:29:00; layover at DEN: 60 minutes.
    • F92711: DEN 2027-01-21 22:29:00 → SAN 2027-01-21 23:58:00.
  • American Airlines AA2438 / AA2289: SAN 2027-02-04 15:13:00 → STL 2027-02-04 23:34:00; 1 stop(s) via DFW; 381 minutes. Local airport times.
    • AA2438: SAN 2027-02-04 15:13:00 → DFW 2027-02-04 20:30:00; layover at DFW: 75 minutes.
    • AA2289: DFW 2027-02-04 21:45:00 → STL 2027-02-04 23:34:00.

2027-01-21 → 2027-02-04 · $332.50

  • American Airlines AA2303 / AA2016: STL 2027-01-21 14:23:00 → SAN 2027-01-21 18:24:00; 1 stop(s) via PHX; 361 minutes. Local airport times.
    • AA2303: STL 2027-01-21 14:23:00 → PHX 2027-01-21 16:51:00; layover at PHX: 74 minutes.
    • AA2016: PHX 2027-01-21 18:05:00 → SAN 2027-01-21 18:24:00.
  • American Airlines AA2438 / AA2289: SAN 2027-02-04 15:13:00 → STL 2027-02-04 23:34:00; 1 stop(s) via DFW; 381 minutes. Local airport times.
    • AA2438: SAN 2027-02-04 15:13:00 → DFW 2027-02-04 20:30:00; layover at DFW: 75 minutes.
    • AA2289: DFW 2027-02-04 21:45:00 → STL 2027-02-04 23:34:00.

2027-01-21 → 2027-02-04 · $323.00

  • Southwest Airlines WN4164 / WN4644: STL 2027-01-21 08:00:00 → SAN 2027-01-21 11:50:00; 1 stop(s) via MCI; 350 minutes. Local airport times.
    • WN4164: STL 2027-01-21 08:00:00 → MCI 2027-01-21 09:10:00; layover at MCI: 75 minutes.
    • WN4644: MCI 2027-01-21 10:25:00 → SAN 2027-01-21 11:50:00.
  • Southwest Airlines WN3823: SAN 2027-02-04 18:20:00 → STL 2027-02-04 23:45:00; nonstop; 205 minutes. Local airport times.

2027-01-21 → 2027-02-04 · $323.00

  • Southwest Airlines WN4249 / WN352: STL 2027-01-21 08:00:00 → SAN 2027-01-21 12:30:00; 1 stop(s) via LAS; 390 minutes. Local airport times.
    • WN4249: STL 2027-01-21 08:00:00 → LAS 2027-01-21 09:30:00; layover at LAS: 100 minutes.
    • WN352: LAS 2027-01-21 11:10:00 → SAN 2027-01-21 12:30:00.
  • Southwest Airlines WN3823: SAN 2027-02-04 18:20:00 → STL 2027-02-04 23:45:00; nonstop; 205 minutes. Local airport times.

2027-01-21 → 2027-02-04 · $323.00

  • Southwest Airlines WN3286 / WN920: STL 2027-01-21 08:20:00 → SAN 2027-01-21 12:30:00; 1 stop(s) via OMA; 370 minutes. Local airport times.
    • WN3286: STL 2027-01-21 08:20:00 → OMA 2027-01-21 09:35:00; layover at OMA: 85 minutes.
    • WN920: OMA 2027-01-21 11:00:00 → SAN 2027-01-21 12:30:00.
  • Southwest Airlines WN3823: SAN 2027-02-04 18:20:00 → STL 2027-02-04 23:45:00; nonstop; 205 minutes. Local airport times.

2027-01-21 → 2027-02-04 · $323.00

  • Southwest Airlines WN4132 / WN266: STL 2027-01-21 19:10:00 → SAN 2027-01-21 23:15:00; 1 stop(s) via DAL; 365 minutes. Local airport times.
    • WN4132: STL 2027-01-21 19:10:00 → DAL 2027-01-21 20:50:00; layover at DAL: 70 minutes.
    • WN266: DAL 2027-01-21 22:00:00 → SAN 2027-01-21 23:15:00.
  • Southwest Airlines WN3823: SAN 2027-02-04 18:20:00 → STL 2027-02-04 23:45:00; nonstop; 205 minutes. Local airport times.

More dates for this route