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Route overview: Saint Louis to San Francisco (SFO) flight deals

Saint Louis → San Francisco

Dec 7, 2026 · return Dec 14, 2026

STL → SFO1 adulteconomyRound trip

9 flight options · 5 airlines

Nonstop flights

Mon, Dec 7 – Mon, Dec 14

Southwest Airlines
8:25 amSTL
4h 25m
Nonstop
10:50 amSFO
Southwest Airlines
11:15 amSFO
3h 55m
Nonstop
5:10 pmSTL

Round-trip total · 1 adult · Taxes included

Mon, Dec 7 – Mon, Dec 14

United Airlines
7:05 pmSTL
4h 36m
Nonstop
9:41 pmSFO
United Airlines
12:20 pmSFO
3h 51m
Nonstop
6:11 pmSTL

Round-trip total · 1 adult · Taxes included

Mon, Dec 7 – Mon, Dec 14

United Airlines
8:00 amSTL
4h 36m
Nonstop
10:36 amSFO
United Airlines
12:20 pmSFO
3h 51m
Nonstop
6:11 pmSTL

Round-trip total · 1 adult · Taxes included

One-stop flights

Mon, Dec 7 – Mon, Dec 14

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 7 – Mon, Dec 14

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 7 – Mon, Dec 14

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 7 – Mon, Dec 14

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 7 – Mon, Dec 14

Southwest Airlines
7:55 amSTL
6h 55m
SAN · 1h 20m
12:50 pmSFO
Southwest Airlines
11:15 amSFO
3h 55m
Nonstop
5:10 pmSTL

Round-trip total · 1 adult · Taxes included

Mon, Dec 7 – Mon, Dec 14

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

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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Explore this route

All dates for this routeDec 6, 2026 → Dec 13, 2026Dec 8, 2026 → Dec 15, 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 Francisco (SFO) flight deals

Exact travel datesAirlineFlightsTotal pricePrice issued (UTC)
2026-12-07 → 2026-12-14Southwest AirlinesWN191 / WN2989$350.002026-10-29T01:29:02Z
2026-12-07 → 2026-12-14United AirlinesUA214 / UA1585$385.002026-10-29T01:29:02Z
2026-12-07 → 2026-12-14Frontier AirlinesF93107 + F94157 / F93436 + F93302$195.002026-10-29T01:29:02Z
2026-12-07 → 2026-12-14American AirlinesAA2303 + AA2234 / AA6214 + AA6209$350.002026-10-29T01:29:02Z
2026-12-07 → 2026-12-14Delta Air LinesDL1597 + DL2078 / DL920 + DL2373$375.002026-10-29T01:29:02Z
2026-12-07 → 2026-12-14United AirlinesUA1257 / UA1585$385.002026-10-29T01:29:02Z
2026-12-07 → 2026-12-14Frontier AirlinesF94567 + F93439 / F93436 + F93302$195.002026-10-29T01:29:02Z
2026-12-07 → 2026-12-14Southwest AirlinesWN4452 + WN4955 / WN2989$330.002026-10-29T01:29:02Z
2026-12-07 → 2026-12-14Southwest AirlinesWN191 / WN4578 + WN1807$330.002026-10-29T01:29:02Z

2026-12-07 → 2026-12-14 · $350.00

  • Southwest Airlines WN191: STL 2026-12-07 08:25:00 → SFO 2026-12-07 10:50:00; nonstop; 265 minutes. Local airport times.
  • Southwest Airlines WN2989: SFO 2026-12-14 11:15:00 → STL 2026-12-14 17:10:00; nonstop; 235 minutes. Local airport times.

2026-12-07 → 2026-12-14 · $385.00

  • United Airlines UA214: STL 2026-12-07 19:05:00 → SFO 2026-12-07 21:41:00; nonstop; 276 minutes. Local airport times.
  • United Airlines UA1585: SFO 2026-12-14 12:20:00 → STL 2026-12-14 18:11:00; nonstop; 231 minutes. Local airport times.

2026-12-07 → 2026-12-14 · $195.00

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

2026-12-07 → 2026-12-14 · $350.00

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

2026-12-07 → 2026-12-14 · $375.00

  • Delta Air Lines DL1597 / DL2078: STL 2026-12-07 06:03:00 → SFO 2026-12-07 11:07:00; 1 stop(s) via MSP; 424 minutes. Local airport times.
    • DL1597: STL 2026-12-07 06:03:00 → MSP 2026-12-07 07:43:00; layover at MSP: 62 minutes.
    • DL2078: MSP 2026-12-07 08:45:00 → SFO 2026-12-07 11:07:00.
  • Delta Air Lines DL920 / DL2373: SFO 2026-12-14 09:56:00 → STL 2026-12-14 17:41:00; 1 stop(s) via SLC; 345 minutes. Local airport times.
    • DL920: SFO 2026-12-14 09:56:00 → SLC 2026-12-14 12:50:00; layover at SLC: 65 minutes.
    • DL2373: SLC 2026-12-14 13:55:00 → STL 2026-12-14 17:41:00.

2026-12-07 → 2026-12-14 · $385.00

  • United Airlines UA1257: STL 2026-12-07 08:00:00 → SFO 2026-12-07 10:36:00; nonstop; 276 minutes. Local airport times.
  • United Airlines UA1585: SFO 2026-12-14 12:20:00 → STL 2026-12-14 18:11:00; nonstop; 231 minutes. Local airport times.

2026-12-07 → 2026-12-14 · $195.00

  • Frontier Airlines F94567 / F93439: STL 2026-12-07 19:58:00 → SFO 2026-12-08 00:48:00; 1 stop(s) via DEN; 410 minutes. Local airport times.
    • F94567: STL 2026-12-07 19:58:00 → DEN 2026-12-07 21:29:00; layover at DEN: 88 minutes.
    • F93439: DEN 2026-12-07 22:57:00 → SFO 2026-12-08 00:48:00.
  • Frontier Airlines F93436 / F93302: SFO 2026-12-14 11:23:00 → STL 2026-12-14 19:14:00; 1 stop(s) via DEN; 351 minutes. Local airport times.
    • F93436: SFO 2026-12-14 11:23:00 → DEN 2026-12-14 15:07:00; layover at DEN: 62 minutes.
    • F93302: DEN 2026-12-14 16:09:00 → STL 2026-12-14 19:14:00.

2026-12-07 → 2026-12-14 · $330.00

  • Southwest Airlines WN4452 / WN4955: STL 2026-12-07 07:55:00 → SFO 2026-12-07 12:50:00; 1 stop(s) via SAN; 415 minutes. Local airport times.
    • WN4452: STL 2026-12-07 07:55:00 → SAN 2026-12-07 09:50:00; layover at SAN: 80 minutes.
    • WN4955: SAN 2026-12-07 11:10:00 → SFO 2026-12-07 12:50:00.
  • Southwest Airlines WN2989: SFO 2026-12-14 11:15:00 → STL 2026-12-14 17:10:00; nonstop; 235 minutes. Local airport times.

2026-12-07 → 2026-12-14 · $330.00

  • Southwest Airlines WN191: STL 2026-12-07 10:05:00 → SFO 2026-12-07 12:25:00; nonstop; 260 minutes. Local airport times.
  • Southwest Airlines WN4578 / WN1807: SFO 2026-12-14 06:00:00 → STL 2026-12-14 13:30:00; 1 stop(s) via DEN; 330 minutes. Local airport times.
    • WN4578: SFO 2026-12-14 06:00:00 → DEN 2026-12-14 09:30:00; layover at DEN: 60 minutes.
    • WN1807: DEN 2026-12-14 10:30:00 → STL 2026-12-14 13:30:00.

Explore this route

For AI assistants

  • This page: Saint Louis (STL) to San Francisco (SFO) · Dec 7, 2026 · return Dec 14, 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.
  • 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.
  • 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 Francisco (SFO) 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.