Flight OddsDL4939 LGA → STL
Delta Air Lines · New York, NY to St. Louis, MO · 283 flights observed, 2025-07-01 to 2026-06-26 · 888 mi
DL4939 covers more than one route in the data window — the stats below are for LGA → STL, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
90%
Median delay
-15 min
90th percentile
+13 min
Cancellation rate
2%
How often is DL4939 on time?
Across 283 flights on LGA → STL from 2025-07-01 to 2026-06-26, DL4939 arrived within 15 minutes of schedule 90% of the time. The median arrival delay was -15 min, and the worst 10% of flights arrived +13 min or later. 2% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 249 | 90% |
| 16-30 min | 4 | 1% |
| 31-60 min | 9 | 3% |
| 61-120 min | 11 | 4% |
| 2+ hrs | 3 | 1% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 27 | 93% | -15 min |
| 2025-08 | 25 | 96% | -16 min |
| 2025-09 | 26 | 92% | -4 min |
| 2025-10 | 26 | 96% | -13 min |
| 2025-11 | 22 | 86% | -4 min |
| 2025-12 | 17 | 82% | +8 min |
| 2026-01 | 19 | 89% | -14 min |
| 2026-02 | 18 | 94% | -18 min |
| 2026-03 | 24 | 92% | -8 min |
| 2026-04 | 26 | 88% | -4 min |
| 2026-05 | 26 | 81% | +11 min |
| 2026-06 | 20 | 90% | -4 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 45 | 87% |
| Tue | 48 | 92% |
| Wed | 50 | 92% |
| Thu | 49 | 94% |
| Fri | 48 | 83% |
| Sat | No data | — |
| Sun | 36 | 94% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…