Southwest AirlinesWN
Flights WN191 10:15 Su
live
Direct flights from Portland (PWM) to St Louis (STL): 1 nonstop departure observed each week across 1 airline. The median arrival is 90 minutes late. No cancellations were recorded across the 1 tracked flight. The nonstop covers 1,759 km, an estimated 2 hours 45 minutes in the air. Measured by Pro Flight Search from live flight boards at Portland and St Louis. Updated 5 October 2026 at 03:18 UTC.
PWM
Portland
smooth · +2
STL
St Louis
busy · +16
1,759 km · ~2h 45m est.
Running clean · 1 airline · 1x weekly · nonstop
89 / 100
route health from live PWM and STL delay boards
Median arrival delay is +90 min. 0 of 1 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →
Median arrival+90 minacross the last 1 operated legs
Flight time~2h 45mestimated 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 boardsWeather lens
Current conditions put the pressure at STL: 40% 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 Portland to St Louis route actually runs
Pro Flight Search records official board updates for nonstop PWM 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 — Portland (PWM) 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/PWM-STL
PWM to STL questions
Is PWM–STL running on time right now?
Smooth skies ahead. The arrival side at STL is the weaker end, route health score 89/100. The airports section above carries the live status and delay window at both ends.
How long is the flight from PWM to STL?
Great-circle distance is 1,759 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 154–181 min gate-to-gate on this route.
How often does PWM–STL fly?
Southwest Airlines runs the route with about 1 flight a week (sun). 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 PWM and arrival-side delay at STL, 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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