STL → SFOSt Louis to San Francisco

live

Direct flights from St Louis (STL) to San Francisco (SFO): 27 nonstop departures observed each week across 4 airlines. 100% of the last 7 operated flights arrived within 15 minutes of schedule. The median arrival is 22 minutes early. No cancellations were recorded across the 7 tracked flights. The nonstop covers 2,786 km, an estimated 4 hours 4 minutes in the air. Measured by Pro Flight Search from live flight boards at St Louis and San Francisco. Updated 21 October 2026 at 20:18 UTC.

Today, STL → SFO

Wed 21 Oct · local times
  1. 07:08 UA573United Left 07:13 +5 Landed 09:04 −26
  2. 08:30 WN4931Southwest Left 08:33 Landed 10:28 −22
  3. · NZ9700Air New Zealand Departed Landed 09:04 −26
  4. · OZ6344Asiana Departed Landed 09:04 −26

Checked STL board 15:18 · SFO board 15:24

STL St Louis smooth · +5
SFO San Francisco smooth · +0
2,786 km · ~4h 04m est.
dep bank 07:08–09:3027x weekly
Runs reliable · 4 airlines · 27x weekly · nonstop
100% on time

of the last 7 operated STL → SFO flights arrived within 15 minutes

Median arrival delay is −22 min. 0 of 7 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →

Median arrival−22 minacross the last 7 operated legs
Flight time~4h 04mestimated from route distance
Weekly departures27x4 direct airlines on the leg

The week

scheduled departures · origin local time
06121824
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Air New ZealandAsiana AirlinesSouthwest AirlinesUnited Airlines

Each mark is a scheduled departure at its origin-local time, observed operating in the last 7 days. Today is highlighted.

Who flies it

observed on the boards · 7 days
Air New ZealandNZ

Flights NZ9700 09:30 daily

Asiana AirlinesOZ

Flights OZ6344 09:30 daily

Southwest AirlinesWN

Flights WN4931 08:30 Mo Tu We Th Fr Su

United AirlinesUA

Flights UA573 07:08 daily

History

operated legs · board outcomes
10-21NZ9700arrived−26
10-21OZ6344arrived−26
10-21UA573dep +5 → arr−26
10-21WN4931dep +3 → arr−22
10-20NZ9700arrived−12
10-20OZ6344arrived−12
10-20UA573arrived−12

Actual board outcomes rather than schedules, paired departure and arrival per flight and day.

Full board history, day by day →

Airports right now

live boards
STLSt Louis +5 min smooth 🌤 few clouds · WNW 4 kt Full STL delay board →
SFOSan Francisco +0 min smooth 🌤 overcast · NE 3 kt Full SFO delay board →

Weather lens

Current conditions put the pressure at SFO: 50% odds of a 15+ minute delay and around +15 min expected when it bites, measured from this route's own weather-matched delay history. See live delays → · Weather risk by airport →

How the St Louis to San Francisco route actually runs

Pro Flight Search records official board updates for nonstop STL to SFO flights through the day: schedules, estimates, gate pushes and actual departures. The verdict above comes from operated flights, so it reflects what this route does rather than what the timetable promises.

Planning around a delay? Live airport delays · Weather delay risk map · Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure

Cite this data

Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.

Suggested citation

Pro Flight Search — St Louis (STL) to San Francisco (SFO) route reliability, measured from operated flights on official airport boards.

Canonical URL
https://proflightsearch.com/search-flights/STL-SFO
How we measure this →

STL to SFO questions

Is STL–SFO running on time right now?

Smooth skies ahead. The departure side at STL is the weaker end, route health score 95/100. The airports section above carries the live status and delay window at both ends.

Morning or evening flight on STL–SFO?

Operators schedule morning departures around 07:08 from STL. Earlier flights typically land before destination-airport delays accumulate later in the day; check the SFO delay card to confirm conditions when you'd arrive.

How long is the flight from STL to SFO?

Great-circle distance is 2,786 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 227–269 min gate-to-gate on this route.

How often does STL–SFO fly?

4 carriers operate this route, around 27 flights a week between them. Compare carrier days and times in the airline list above.