Flight OddsDL4939 STL → LGA
Delta Air Lines · St. Louis, MO to New York, NY · 113 flights observed, 2026-01-05 to 2026-06-27 · 888 mi
DL4939 covers more than one route in the data window — the stats below are for STL → LGA, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
87%
Median delay
-13 min
90th percentile
+21 min
Cancellation rate
5%
How often is DL4939 on time?
Across 113 flights on STL → LGA from 2026-01-05 to 2026-06-27, DL4939 arrived within 15 minutes of schedule 87% of the time. The median arrival delay was -13 min, and the worst 10% of flights arrived +21 min or later. 5% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 93 | 87% |
| 16-30 min | 4 | 4% |
| 31-60 min | 4 | 4% |
| 61-120 min | 3 | 3% |
| 2+ hrs | 3 | 3% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2026-01 | 21 | 100% | -18 min |
| 2026-02 | 22 | 86% | -12 min |
| 2026-03 | 25 | 80% | +13 min |
| 2026-04 | 26 | 77% | +9 min |
| 2026-05 | 9 | 100% | -12 min |
| 2026-06 | 4 | 100% | -15 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 14 | 93% |
| Tue | 17 | 94% |
| Wed | 18 | 78% |
| Thu | 17 | 88% |
| Fri | 17 | 76% |
| Sat | 8 | 100% |
| Sun | 16 | 88% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…