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Saint Louis → San Francisco

Dec 21, 2026 · return Dec 25, 2026

STL → SFO1 adulteconomyRound trip

9 flight options · 5 airlines

Nonstop flights

Mon, Dec 21 – Fri, Dec 25

Southwest Airlines
8:25 amSTL
4h 25m
Nonstop
10:50 amSFO
Southwest Airlines
1:05 pmSFO
3h 50m
Nonstop
6:55 pmSTL

Round-trip total · 1 adult · Taxes included

Mon, Dec 21 – Fri, Dec 25

United Airlines
8:00 amSTL
4h 36m
Nonstop
10:36 amSFO
United Airlines
12:15 pmSFO
3h 50m
Nonstop
6:05 pmSTL

Round-trip total · 1 adult · Taxes included

Mon, Dec 21 – Fri, Dec 25

United Airlines
7:05 pmSTL
4h 36m
Nonstop
9:41 pmSFO
United Airlines
12:15 pmSFO
3h 50m
Nonstop
6:05 pmSTL

Round-trip total · 1 adult · Taxes included

One-stop flights

Mon, Dec 21 – Fri, Dec 25

Frontier Airlines
2:02 pmSTL
6h 24m
LAS · 1h 4m
6:26 pmSFO
Frontier Airlines
11:23 amSFO
5h 51m
DEN · 1h 2m
7:14 pmSTL

Round-trip total · 1 adult · Taxes included

Mon, Dec 21 – Fri, Dec 25

American Airlines
2:23 pmSTL
6h 53m
PHX · 1h 14m
7:16 pmSFO
American Airlines
3:07 pmSFO
6h 29m
LAX · 1h 7m
11:36 pmSTL

Round-trip total · 1 adult · Taxes included

Mon, Dec 21 – Fri, Dec 25

Delta Air Lines
6:03 amSTL
7h 4m
MSP · 1h 2m
11:07 amSFO
Delta Air Lines
9:56 amSFO
5h 45m
SLC · 1h 5m
5:41 pmSTL

Round-trip total · 1 adult · Taxes included

Mon, Dec 21 – Fri, Dec 25

Frontier Airlines
7:58 pmSTL
6h 50m
DEN · 1h 28m
12:48 am+1SFO
Frontier Airlines
11:23 amSFO
5h 51m
DEN · 1h 2m
7:14 pmSTL

Round-trip total · 1 adult · Taxes included

Mon, Dec 21 – Fri, Dec 25

Southwest Airlines
10:05 amSTL
4h 20m
Nonstop
12:25 pmSFO
Southwest Airlines
6:00 amSFO
5h 30m
DEN · 1h
1:30 pmSTL

Round-trip total · 1 adult · Taxes included

Mon, Dec 21 – Fri, Dec 25

Southwest Airlines
7:55 amSTL
6h 55m
SAN · 1h 20m
12:50 pmSFO
Southwest Airlines
1:05 pmSFO
3h 50m
Nonstop
6:55 pmSTL

Round-trip total · 1 adult · Taxes included

Make this trip yours

STL ⇄ SFO

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)
2026-12-21 → 2026-12-25Southwest AirlinesWN191 / WN2989$472.502026-10-29T01:29:02Z
2026-12-21 → 2026-12-25United AirlinesUA1257 / UA1905$519.762026-10-29T01:29:02Z
2026-12-21 → 2026-12-25Frontier AirlinesF93107 + F94157 / F93436 + F93302$263.262026-10-29T01:29:02Z
2026-12-21 → 2026-12-25American AirlinesAA2303 + AA2234 / AA6214 + AA6209$472.502026-10-29T01:29:02Z
2026-12-21 → 2026-12-25Delta Air LinesDL1597 + DL2078 / DL920 + DL2373$506.262026-10-29T01:29:02Z
2026-12-21 → 2026-12-25United AirlinesUA214 / UA1905$519.762026-10-29T01:29:02Z
2026-12-21 → 2026-12-25Frontier AirlinesF94567 + F93439 / F93436 + F93302$263.262026-10-29T01:29:02Z
2026-12-21 → 2026-12-25Southwest AirlinesWN191 / WN4578 + WN1807$445.502026-10-29T01:29:02Z
2026-12-21 → 2026-12-25Southwest AirlinesWN4452 + WN4955 / WN2989$445.502026-10-29T01:29:02Z

2026-12-21 → 2026-12-25 · $472.50

  • Southwest Airlines WN191: STL 2026-12-21 08:25:00 → SFO 2026-12-21 10:50:00; nonstop; 265 minutes. Local airport times.
  • Southwest Airlines WN2989: SFO 2026-12-25 13:05:00 → STL 2026-12-25 18:55:00; nonstop; 230 minutes. Local airport times.

2026-12-21 → 2026-12-25 · $519.76

  • United Airlines UA1257: STL 2026-12-21 08:00:00 → SFO 2026-12-21 10:36:00; nonstop; 276 minutes. Local airport times.
  • United Airlines UA1905: SFO 2026-12-25 12:15:00 → STL 2026-12-25 18:05:00; nonstop; 230 minutes. Local airport times.

2026-12-21 → 2026-12-25 · $263.26

  • Frontier Airlines F93107 / F94157: STL 2026-12-21 14:02:00 → SFO 2026-12-21 18:26:00; 1 stop(s) via LAS; 384 minutes. Local airport times.
    • F93107: STL 2026-12-21 14:02:00 → LAS 2026-12-21 15:38:00; layover at LAS: 64 minutes.
    • F94157: LAS 2026-12-21 16:42:00 → SFO 2026-12-21 18:26:00.
  • Frontier Airlines F93436 / F93302: SFO 2026-12-25 11:23:00 → STL 2026-12-25 19:14:00; 1 stop(s) via DEN; 351 minutes. Local airport times.
    • F93436: SFO 2026-12-25 11:23:00 → DEN 2026-12-25 15:07:00; layover at DEN: 62 minutes.
    • F93302: DEN 2026-12-25 16:09:00 → STL 2026-12-25 19:14:00.

2026-12-21 → 2026-12-25 · $472.50

  • American Airlines AA2303 / AA2234: STL 2026-12-21 14:23:00 → SFO 2026-12-21 19:16:00; 1 stop(s) via PHX; 413 minutes. Local airport times.
    • AA2303: STL 2026-12-21 14:23:00 → PHX 2026-12-21 16:51:00; layover at PHX: 74 minutes.
    • AA2234: PHX 2026-12-21 18:05:00 → SFO 2026-12-21 19:16:00.
  • American Airlines AA6214 / AA6209: SFO 2026-12-25 15:07:00 → STL 2026-12-25 23:36:00; 1 stop(s) via LAX; 389 minutes. Local airport times.
    • AA6214: SFO 2026-12-25 15:07:00 → LAX 2026-12-25 16:43:00; layover at LAX: 67 minutes.
    • AA6209: LAX 2026-12-25 17:50:00 → STL 2026-12-25 23:36:00.

2026-12-21 → 2026-12-25 · $506.26

  • Delta Air Lines DL1597 / DL2078: STL 2026-12-21 06:03:00 → SFO 2026-12-21 11:07:00; 1 stop(s) via MSP; 424 minutes. Local airport times.
    • DL1597: STL 2026-12-21 06:03:00 → MSP 2026-12-21 07:43:00; layover at MSP: 62 minutes.
    • DL2078: MSP 2026-12-21 08:45:00 → SFO 2026-12-21 11:07:00.
  • Delta Air Lines DL920 / DL2373: SFO 2026-12-25 09:56:00 → STL 2026-12-25 17:41:00; 1 stop(s) via SLC; 345 minutes. Local airport times.
    • DL920: SFO 2026-12-25 09:56:00 → SLC 2026-12-25 12:50:00; layover at SLC: 65 minutes.
    • DL2373: SLC 2026-12-25 13:55:00 → STL 2026-12-25 17:41:00.

2026-12-21 → 2026-12-25 · $519.76

  • United Airlines UA214: STL 2026-12-21 19:05:00 → SFO 2026-12-21 21:41:00; nonstop; 276 minutes. Local airport times.
  • United Airlines UA1905: SFO 2026-12-25 12:15:00 → STL 2026-12-25 18:05:00; nonstop; 230 minutes. Local airport times.

2026-12-21 → 2026-12-25 · $263.26

  • Frontier Airlines F94567 / F93439: STL 2026-12-21 19:58:00 → SFO 2026-12-22 00:48:00; 1 stop(s) via DEN; 410 minutes. Local airport times.
    • F94567: STL 2026-12-21 19:58:00 → DEN 2026-12-21 21:29:00; layover at DEN: 88 minutes.
    • F93439: DEN 2026-12-21 22:57:00 → SFO 2026-12-22 00:48:00.
  • Frontier Airlines F93436 / F93302: SFO 2026-12-25 11:23:00 → STL 2026-12-25 19:14:00; 1 stop(s) via DEN; 351 minutes. Local airport times.
    • F93436: SFO 2026-12-25 11:23:00 → DEN 2026-12-25 15:07:00; layover at DEN: 62 minutes.
    • F93302: DEN 2026-12-25 16:09:00 → STL 2026-12-25 19:14:00.

2026-12-21 → 2026-12-25 · $445.50

  • Southwest Airlines WN191: STL 2026-12-21 10:05:00 → SFO 2026-12-21 12:25:00; nonstop; 260 minutes. Local airport times.
  • Southwest Airlines WN4578 / WN1807: SFO 2026-12-25 06:00:00 → STL 2026-12-25 13:30:00; 1 stop(s) via DEN; 330 minutes. Local airport times.
    • WN4578: SFO 2026-12-25 06:00:00 → DEN 2026-12-25 09:30:00; layover at DEN: 60 minutes.
    • WN1807: DEN 2026-12-25 10:30:00 → STL 2026-12-25 13:30:00.

2026-12-21 → 2026-12-25 · $445.50

  • Southwest Airlines WN4452 / WN4955: STL 2026-12-21 07:55:00 → SFO 2026-12-21 12:50:00; 1 stop(s) via SAN; 415 minutes. Local airport times.
    • WN4452: STL 2026-12-21 07:55:00 → SAN 2026-12-21 09:50:00; layover at SAN: 80 minutes.
    • WN4955: SAN 2026-12-21 11:10:00 → SFO 2026-12-21 12:50:00.
  • Southwest Airlines WN2989: SFO 2026-12-25 13:05:00 → STL 2026-12-25 18:55:00; nonstop; 230 minutes. Local airport times.

More dates for this route