SAN → STLSan Diego to St Louis

live

Direct flights from San Diego (SAN) to St Louis (STL): 7 nonstop departures observed each week across 1 airline. 50% of the last 6 operated flights arrived within 15 minutes of schedule. The median arrival is 20 minutes late. No cancellations were recorded across the 6 tracked flights. The nonstop covers 2,501 km, an estimated 3 hours 42 minutes in the air. Measured by Pro Flight Search from live flight boards at San Diego and St Louis. Updated 21 October 2026 at 20:18 UTC.

Today, SAN → STL

Wed 21 Oct · local times
  1. 12:05 WN4374Southwest Left 12:03 STL est. 17:39In the air · sched 17:45

Checked SAN board 16:39 · STL board 15:18

SAN San Diego smooth · +3
STL St Louis smooth · +0
2,501 km · ~3h 42m est.
dep bank 12:05–13:307x weekly
Runs rough · 1 airline · 7x weekly · nonstop
50% on time

of the last 6 operated SAN → STL flights arrived within 15 minutes

Median arrival delay is +20 min. 0 of 6 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →

Median arrival+20 minacross the last 6 operated legs
Flight time~3h 42mestimated from route distance
Weekly departures7x1 direct airline on the leg

The week

scheduled departures · origin local time
06121824
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Southwest 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
Southwest AirlinesWN50% on time

Flights WN4374 12:05 Tu We · WN4576 13:20 Mo Th Fr Sa · WN2348 13:30 Su

History

operated legs · board outcomes
10-21WN4374dep −2 → arr−6
10-20WN4374dep −7 → arr−31
10-19WN4576dep +51 → arr+68
10-18WN2348dep +141 → arr+112
10-17WN4576departed−2
10-16WN4576dep +15 → arr+20

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
SANSan Diego +3 min smooth 🌤 scattered clouds · S 10 kt Full SAN delay board →
STLSt Louis +0 min smooth 🌤 scattered clouds · WNW 3 kt Full STL delay board →

Weather lens

Current conditions put the pressure at SAN: 55% odds of a 15+ minute delay and around +19 min expected when it bites, measured from this route's own weather-matched delay history. See live delays → · Weather risk by airport →

How the San Diego to St Louis route actually runs

Pro Flight Search records official board updates for nonstop SAN to STL 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 — San Diego (SAN) to St Louis (STL) route reliability, measured from operated flights on official airport boards.

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

SAN to STL questions

Is SAN–STL running on time right now?

Smooth skies ahead. The departure side at SAN is the weaker end, route health score 96/100. The airports section above carries the live status and delay window at both ends.

Morning or evening flight on SAN–STL?

Operators schedule 3 departures from SAN. Earlier flights typically land before destination-airport delays accumulate later in the day; check the STL delay card to confirm conditions when you'd arrive.

How long is the flight from SAN to STL?

Great-circle distance is 2,501 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 207–244 min gate-to-gate on this route.

How often does SAN–STL fly?

Southwest Airlines runs the route with about 7 flights a week (daily). Since one carrier owns the route, a single disruption tends to ripple through the day.