STL → SANSt Louis to San Diego

live

Direct flights from St Louis (STL) to San Diego (SAN): 7 nonstop departures observed each week across 1 airline. 71% of the last 7 operated flights arrived within 15 minutes of schedule. The median arrival is 2 minutes early. No cancellations were recorded across the 7 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 St Louis and San Diego. Updated 23 October 2026 at 06:39 UTC.

Today, STL → SAN

Fri 23 Oct · local times
  1. · WN4403Southwest On schedule SAN 10:25scheduled

Checked STL board 22:18 · SAN board 23:39

STL St Louis heavy · +41
SAN San Diego heavy · +45
2,501 km · ~3h 42m est.
dep bank 08:30–08:457x weekly
Runs mixed · 1 airline · 7x weekly · nonstop
71% on time

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

Median arrival delay is −2 min. 0 of 7 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →

Median arrival−2 minacross the last 7 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 AirlinesWN71% on time

Flights WN3661 08:30 Su · WN4403 08:30 Mo Tu We Th Fr · WN738 08:45 Sa

History

operated legs · board outcomes
10-22WN4403dep +13 → arr−2
10-21WN4403dep +13 → arr−5
10-20WN4403arrived−7
10-19WN4403dep +20 → arr+2
10-18WN3661dep +22 → arr−3
10-17WN738dep +40 → arr+22
10-16WN4403dep +15 → arr+16

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 +41 min heavy 🌤 clear · N 0 kt Full STL delay board →
SANSan Diego +45 min heavy 🌤 scattered clouds · ENE 3 kt Full SAN 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 St Louis to San Diego route actually runs

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

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

STL to SAN questions

Is STL–SAN running on time right now?

Significant delay risk. The arrival side at SAN is the weaker end, route health score 43/100. The airports section above carries the live status and delay window at both ends.

Morning or evening flight on STL–SAN?

Operators schedule morning departures around 08:30 from STL. Earlier flights typically land before destination-airport delays accumulate later in the day; check the SAN delay card to confirm conditions when you'd arrive.

How long is the flight from STL to SAN?

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 STL–SAN 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.