Republic Airways ORD to STL on-time performance
Republic Airways nonstop flights from Chicago to St. Louis · Aug 2025 – Jul 2026Regional airline operating flights for American Eagle, Delta Connection and United Express.
On-time arrivals
76%
arrived < 15 min late
Cancelled
3.0%
13 flights
Avg arrival delay
20 min
78 min when late
Rank on route
#1 of 5
route average 72% on time
Key facts
- Republic Airways flights on ORD to STL arrived on time 76% of the time in Aug 2025 – Jul 2026.
- 3% were cancelled, and 10% arrived an hour or more late.
- That ranks #1 of 5 airlines on this route, which averaged 72% on time overall.
- The largest source of delay minutes was late-arriving aircraft (52%).
On-time trend by month
Why this airline's flights were late
- Late-arriving aircraft52%
- Air traffic control & airport congestion22%
- Airline (crew, maintenance, cleaning, fueling)17%
- Extreme weather9%
- Security0%
Other airlines on ORD to STL
- SkyWest Airlines70% on time · 23 min avg delay
- Envoy Air75% on time · 14 min avg delay
- United Airlines73% on time · 21 min avg delay
- American Airlines66% on time · 32 min avg delay
Full ORD to STL comparison →
Republic Airways on-time record across all routes →
434 Republic Airways flights tracked on this route; 13 cancelled, 0 diverted.
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. How we calculate this.