Southwest AirlinesWN77% on time
Flights WN3357 varies daily · WN4057 12:30 Sa · WN380 varies Su · WN3266 18:55 Mo Tu We Th Fr
live
Direct flights from Raleigh/Durham (RDU) to St Louis (STL): 7 nonstop departures observed each week across 1 airline. 77% of the last 13 operated flights arrived within 15 minutes of schedule. The median arrival is 14 minutes early. No cancellations were recorded across the 13 tracked flights. The nonstop covers 1,072 km, an estimated 1 hour 52 minutes in the air. Measured by Pro Flight Search from live flight boards at Raleigh/Durham and St Louis. Updated 10 September 2026 at 03:18 UTC.
RDU
Raleigh/Durham
busy · +22
STL
St Louis
smooth · +0
1,072 km · ~1h 52m est.
Runs mixed · 1 airline · 7x weekly · nonstop
77% on time
of the last 13 operated RDU → STL flights arrived within 15 minutes
Median arrival delay is −14 min. 0 of 13 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →
Median arrival−14 minacross the last 13 operated legs
Flight time~1h 52mestimated from route distance
Weekly departures7x1 direct airline on the leg
Cancelled0.0%recent route rate · 0 of 13
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 boardsWeather lens
Current conditions put the pressure at RDU and STL: 43% odds of a 15+ minute delay and around +9 min expected when it bites, measured from this route's own weather-matched delay history. See live delays → · Weather risk by airport →
next sweep in 120s
How the Raleigh/Durham to St Louis route actually runs
Pro Flight Search records official board updates for nonstop RDU 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 — Raleigh/Durham (RDU) to St Louis (STL) route reliability, measured from operated flights on official airport boards.
Canonical URL
How we measure this →
https://proflightsearch.com/search-flights/RDU-STL
RDU to STL questions
Is RDU–STL running on time right now?
Smooth skies ahead. The departure side at RDU is the weaker end, route health score 85/100. The airports section above carries the live status and delay window at both ends.
Morning or evening flight on RDU–STL?
Operators schedule evening departures around 18:55 from RDU. 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 RDU to STL?
Great-circle distance is 1,072 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 106–122 min gate-to-gate on this route.
How often does RDU–STL fly?
Southwest Airlines runs the route with about 16 flights a week (daily). Since one carrier owns the route, a single disruption tends to ripple through the day.
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