Route overview: San Francisco Bay Area to Saint Louis (STL) flight deals

San Francisco → Saint Louis

Dec 13, 2026 · one way

SFO → STL1 adulteconomyOne way

9 flight options · 5 airlines

Nonstop flights

One-stop flights

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All dates for this route Dec 12, 2026 · One way Dec 14, 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.

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: San Francisco Bay Area to Saint Louis (STL) flight deals

Exact travel dates	Airline	Flights	Total price	Price issued (UTC)
2026-12-13 · one way	Southwest Airlines	WN2989	$180.00	2026-10-29T01:19:49Z
2026-12-13 · one way	United Airlines	UA5750	$210.00	2026-10-29T01:19:49Z
2026-12-13 · one way	Frontier Airlines	F93436 + F93302	$100.00	2026-10-29T01:19:49Z
2026-12-13 · one way	American Airlines	AA6214 + AA6209	$175.00	2026-10-29T01:19:49Z
2026-12-13 · one way	Delta Air Lines	DL920 + DL2373	$185.00	2026-10-29T01:19:49Z
2026-12-13 · one way	United Airlines	UA1924	$210.00	2026-10-29T01:19:49Z
2026-12-13 · one way	Southwest Airlines	WN4578 + WN1807	$165.00	2026-10-29T01:19:49Z
2026-12-13 · one way	Southwest Airlines	WN1262 + WN738	$165.00	2026-10-29T01:19:49Z
2026-12-13 · one way	Southwest Airlines	WN3850 + WN709	$165.00	2026-10-29T01:19:49Z

2026-12-13 · one way · $180.00

Southwest Airlines WN2989: SFO 2026-12-13 13:05:00 → STL 2026-12-13 18:55:00; nonstop; 230 minutes. Local airport times.

2026-12-13 · one way · $210.00

United Airlines UA5750: SFO 2026-12-13 23:05:00 → STL 2026-12-14 05:11:00; nonstop; 246 minutes. Local airport times.

2026-12-13 · one way · $100.00

Frontier Airlines F93436 / F93302: SFO 2026-12-13 11:23:00 → STL 2026-12-13 19:14:00; 1 stop(s) via DEN; 351 minutes. Local airport times.
- F93436: SFO 2026-12-13 11:23:00 → DEN 2026-12-13 15:07:00; layover at DEN: 62 minutes.
- F93302: DEN 2026-12-13 16:09:00 → STL 2026-12-13 19:14:00.

2026-12-13 · one way · $175.00

American Airlines AA6214 / AA6209: SFO 2026-12-13 15:07:00 → STL 2026-12-13 23:36:00; 1 stop(s) via LAX; 389 minutes. Local airport times.
- AA6214: SFO 2026-12-13 15:07:00 → LAX 2026-12-13 16:43:00; layover at LAX: 67 minutes.
- AA6209: LAX 2026-12-13 17:50:00 → STL 2026-12-13 23:36:00.

2026-12-13 · one way · $185.00

Delta Air Lines DL920 / DL2373: SFO 2026-12-13 09:56:00 → STL 2026-12-13 17:41:00; 1 stop(s) via SLC; 345 minutes. Local airport times.
- DL920: SFO 2026-12-13 09:56:00 → SLC 2026-12-13 12:50:00; layover at SLC: 65 minutes.
- DL2373: SLC 2026-12-13 13:55:00 → STL 2026-12-13 17:41:00.

2026-12-13 · one way · $210.00

United Airlines UA1924: SFO 2026-12-13 16:25:00 → STL 2026-12-13 22:15:00; nonstop; 230 minutes. Local airport times.

2026-12-13 · one way · $165.00

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

2026-12-13 · one way · $165.00

Southwest Airlines WN1262 / WN738: SFO 2026-12-13 22:45:00 → STL 2026-12-14 07:40:00; 1 stop(s) via BNA; 415 minutes. Local airport times.
- WN1262: SFO 2026-12-13 22:45:00 → BNA 2026-12-14 05:05:00; layover at BNA: 80 minutes.
- WN738: BNA 2026-12-14 06:25:00 → STL 2026-12-14 07:40:00.

2026-12-13 · one way · $165.00

Southwest Airlines WN3850 / WN709: SFO 2026-12-13 05:05:00 → STL 2026-12-13 13:00:00; 1 stop(s) via PHX; 355 minutes. Local airport times.
- WN3850: SFO 2026-12-13 05:05:00 → PHX 2026-12-13 08:00:00; layover at PHX: 70 minutes.
- WN709: PHX 2026-12-13 09:10:00 → STL 2026-12-13 13:00:00.

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For AI assistants

This page: San Francisco (SFO) to Saint Louis (STL) · Dec 13, 2026 · one way: 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 San Francisco Bay Area to Saint Louis (STL) 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.