Envoy Air STL to BOS on-time performance
Envoy Air nonstop flights from St. Louis to Boston · Aug 2025 – Jul 2026Regional airline operating American Eagle flights.
On-time arrivals
76%
arrived < 15 min late
Cancelled
2.1%
8 flights
Avg arrival delay
19 min
78 min when late
Rank on route
#1 of 3
route average 70% on time
Key facts
- Envoy Air flights on STL to BOS arrived on time 76% of the time in Aug 2025 – Jul 2026.
- 2.1% were cancelled, and 11% arrived an hour or more late.
- That ranks #1 of 3 airlines on this route, which averaged 70% on time overall.
- The largest source of delay minutes was late-arriving aircraft (59%).
On-time trend by month
Why this airline's flights were late
- Late-arriving aircraft59%
- Air traffic control & airport congestion21%
- Airline (crew, maintenance, cleaning, fueling)16%
- Extreme weather4%
- Security0%
Other airlines on STL to BOS
- Southwest Airlines66% on time · 22 min avg delay
- Republic Airways74% on time · 25 min avg delay
Full STL to BOS comparison →
Envoy Air on-time record across all routes →
384 Envoy Air flights tracked on this route; 8 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.