Flight OddsSTL → DEN Frontier Airlines
Frontier Airlines · St. Louis, MO to Denver, CO · 277 flights, 2025-07-02 to 2026-06-30 · aggregated across 2 flight numbers
On-time arrival
75%
Median delay
-8 min
90th percentile
+71 min
Cancellation rate
1%
How on-time is Frontier Airlines from STL to DEN?
Across every Frontier Airlines flight number on STL → DEN (277 flights, 2025-07-02 to 2026-06-30), 75% arrived within 15 minutes of schedule. Median arrival delay -8 min; the worst 10% ran +71 min or later. 1% were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 206 | 75% |
| 16-30 min | 18 | 7% |
| 31-60 min | 18 | 7% |
| 61-120 min | 19 | 7% |
| 2+ hrs | 13 | 5% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 16 | 44% | +50 min |
| 2025-08 | 24 | 75% | +18 min |
| 2025-09 | 30 | 83% | -8 min |
| 2025-10 | 31 | 87% | -3 min |
| 2025-11 | 29 | 93% | -10 min |
| 2025-12 | 18 | 67% | +19 min |
| 2026-01 | 18 | 72% | +32 min |
| 2026-02 | 18 | 89% | -2 min |
| 2026-03 | 17 | 59% | +36 min |
| 2026-04 | 19 | 89% | -8 min |
| 2026-05 | 25 | 80% | +14 min |
| 2026-06 | 29 | 48% | +25 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 50 | 74% |
| Tue | 21 | 90% |
| Wed | 46 | 80% |
| Thu | 26 | 73% |
| Fri | 51 | 59% |
| Sat | 52 | 75% |
| Sun | 28 | 89% |
F9 flight numbers on STL → DEN
Related
Based on US DOT Bureau of Transportation Statistics on-time data. Loading the full breakdown…