Frontier Airlines PHX to STL on-time performance
Frontier Airlines nonstop flights from Phoenix to St. Louis · Aug 2025 – Jul 2026
On-time arrivals
83%
arrived < 15 min late
Cancelled
1.9%
1 flights
Avg arrival delay
30 min
170 min when late
Rank on route
#3 of 5
route average 77% on time
Key facts
- Frontier Airlines flights on PHX to STL arrived on time 83% of the time in Aug 2025 – Jul 2026.
- 1.9% were cancelled, and 10% arrived an hour or more late.
- That ranks #3 of 5 airlines on this route, which averaged 77% on time overall.
- The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (74%).
On-time trend by month
Why this airline's flights were late
- Airline (crew, maintenance, cleaning, fueling)74%
- Late-arriving aircraft23%
- Air traffic control & airport congestion3%
- Extreme weather0%
- Security0%
Other airlines on PHX to STL
- Southwest Airlines75% on time · 13 min avg delay
- American Airlines78% on time · 16 min avg delay
- Envoy Air93% on time · 6 min avg delay
- SkyWest Airlines89% on time · 5 min avg delay
Full PHX to STL comparison →
Frontier Airlines on-time record across all routes →
53 Frontier Airlines flights tracked on this route; 1 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.