Southwest AirlinesWN
Flights WN2737 10:00 Sa
live
Direct flights from St Louis (STL) to San Diego (NZY): 1 nonstop departure observed each week across 1 airline. No cancellations were recorded across the 1 tracked flight. The nonstop covers 2,505 km, an estimated 3 hours 43 minutes in the air. Measured by Pro Flight Search from live flight boards at St Louis and San Diego. Updated 31 October 2026 at 20:18 UTC.
STL
St Louis
heavy · +31
NZY
San Diego
tracking
2,505 km · ~3h 43m est.
Under pressure · 1 airline · 1x weekly · nonstop
58 / 100
route health from live STL and NZY delay boards
0 of 1 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →
Flight time~3h 43mestimated from route distance
Weekly departures1x1 direct airline on the leg
The week
scheduled departures · origin local time06121824
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 daysHistory
operated legs · board outcomesActual board outcomes rather than schedules, paired departure and arrival per flight and day.
Full board history, day by day →
Airports right now
live boardsnext sweep in 120s
How the St Louis to San Diego route actually runs
Pro Flight Search records official board updates for nonstop STL to NZY 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 (NZY) route reliability, measured from operated flights on official airport boards.
Canonical URL
How we measure this →
https://proflightsearch.com/search-flights/STL-NZY
STL to NZY questions
Is STL–NZY running on time right now?
Some delays possible. The departure side at STL is the weaker end, route health score 58/100. The airports section above carries the live status and delay window at both ends.
How long is the flight from STL to NZY?
Great-circle distance is 2,505 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 207–245 min gate-to-gate on this route.
How often does STL–NZY fly?
Southwest Airlines runs the route with about 1 flight a week (sat). Since one carrier owns the route, a single disruption tends to ripple through the day.
What does the route health score measure?
A blend of departure-side delay at STL and arrival-side delay at NZY, computed from rolling delay windows (refreshed every 40 minutes) with a daily-rollup fallback. Current MVFR, IFR, or LIFR endpoint weather caps the score when flight rules can limit throughput. Higher is healthier: 100 means operations are clean at both ends.
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