Republic Airways BOS to STL on-time performance
Republic Airways nonstop flights from Boston to St. Louis · Aug 2025 – Jul 2026Regional airline operating flights for American Eagle, Delta Connection and United Express.
On-time arrivals
79%
arrived < 15 min late
Cancelled
4.1%
12 flights
Avg arrival delay
12 min
56 min when late
Rank on route
#2 of 3
route average 76% on time
Key facts
- Republic Airways flights on BOS to STL arrived on time 79% of the time in Aug 2025 – Jul 2026.
- 4.1% were cancelled, and 6% arrived an hour or more late.
- That ranks #2 of 3 airlines on this route, which averaged 76% on time overall.
- The largest source of delay minutes was late-arriving aircraft (50%).
On-time trend by month
Why this airline's flights were late
- Late-arriving aircraft50%
- Airline (crew, maintenance, cleaning, fueling)34%
- Air traffic control & airport congestion16%
- Extreme weather0%
- Security0%
Other airlines on BOS to STL
- Southwest Airlines73% on time · 18 min avg delay
- Envoy Air82% on time · 14 min avg delay
Full BOS to STL comparison →
Republic Airways on-time record across all routes →
293 Republic Airways flights tracked on this route; 12 cancelled, 3 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.