Sun Country AirlinesSY86% on time
Flights SY3097 15:50 daily
live
Direct flights from Cincinnati / Covington (CVG) to St Louis (STL): 7 nonstop departures observed each week across 1 airline. 91% of the last 11 operated flights arrived within 15 minutes of schedule. The median arrival is 2 minutes early. No cancellations were recorded across the 11 tracked flights. The nonstop covers 495 km, an estimated 1 hour 8 minutes in the air. Measured by Pro Flight Search from live flight boards at Cincinnati / Covington and St Louis. Updated 10 September 2026 at 20:18 UTC.
CVG
Cincinnati / Covington
smooth · +13
STL
St Louis
smooth · +0
495 km · ~1h 08m est.
Runs reliable · 1 airline · 7x weekly · nonstop
91% on time
of the last 11 operated CVG → STL flights arrived within 15 minutes
Median arrival delay is −2 min. 0 of 11 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →
Median arrival−2 minacross the last 11 operated legs
Flight time~1h 08mestimated from route distance
Weekly departures7x1 direct airline on the leg
Cancelled0.0%recent route rate · 0 of 11
The week
scheduled departures · origin local time06121824
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Sun Country 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 outcomes09-10KII524departed+0
09-09KII524dep +0 → arr+0
09-08KII524dep +0 → arr+0
09-07KII524dep +0 → arr−3
Actual 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 CVG and STL: 47% odds of a 15+ minute delay and around +10 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 Cincinnati / Covington to St Louis route actually runs
Pro Flight Search records official board updates for nonstop CVG 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 — Cincinnati / Covington (CVG) 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/CVG-STL
CVG to STL questions
Is CVG–STL running on time right now?
Smooth skies ahead. The departure side at CVG is the weaker end, route health score 91/100. The airports section above carries the live status and delay window at both ends.
How long is the flight from CVG to STL?
Great-circle distance is 495 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 65–72 min gate-to-gate on this route.
How often does CVG–STL fly?
Sun Country 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.
What does the route health score measure?
A blend of departure-side delay at CVG 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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