Is STL–YYC running on time right now?
Some delays possible. The departure side at STL is the weaker end, route health score 62/100. The airports section above carries the live status and delay window at both ends.
live
Direct flights from St Louis (STL) to Calgary (YYC) run nonstop between the two airports. The median arrival is 5 minutes late. No cancellations were recorded across the 1 tracked flight. The nonstop covers 2,297 km, an estimated 3 hours 27 minutes in the air. Measured by Pro Flight Search from live flight boards at St Louis and Calgary. Updated 10 September 2026 at 15:18 UTC.
STL
St Louis
heavy · +39
YYC
Calgary
busy · +18
2,297 km · ~3h 27m est.
Under pressure · 0 airlines · nonstop
62 / 100
route health from live STL and YYC delay boards
Median arrival delay is +5 min. 0 of 1 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →
Median arrival+5 minacross the last 1 operated legs
Flight time~3h 27mestimated from route distance
History
operated legs · board outcomes09-10LXJ385departed+5
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 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 St Louis to Calgary route actually runs
Pro Flight Search records official board updates for nonstop STL to YYC 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 Calgary (YYC) route reliability, measured from operated flights on official airport boards.
Canonical URL
How we measure this →
https://proflightsearch.com/search-flights/STL-YYC
STL to YYC questions
How long is the flight from STL to YYC?
Great-circle distance is 2,297 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 192–227 min gate-to-gate on this route.
What does the route health score measure?
A blend of departure-side delay at STL and arrival-side delay at YYC, 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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