Flight OddsDL5615 BOS → SDF
Delta Air Lines · Boston, MA to Louisville, KY · 172 flights observed, 2025-12-20 to 2026-06-30 · 829 mi
DL5615 covers more than one route in the data window — the stats below are for BOS → SDF, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
86%
Median delay
-9 min
90th percentile
+24 min
Cancellation rate
2%
How often is DL5615 on time?
Across 172 flights on BOS → SDF from 2025-12-20 to 2026-06-30, DL5615 arrived within 15 minutes of schedule 86% of the time. The median arrival delay was -9 min, and the worst 10% of flights arrived +24 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 | 144 | 86% |
| 16-30 min | 9 | 5% |
| 31-60 min | 9 | 5% |
| 61-120 min | 4 | 2% |
| 2+ hrs | 2 | 1% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-12 | 9 | 56% | +45 min |
| 2026-01 | 23 | 74% | +5 min |
| 2026-02 | 20 | 70% | -1 min |
| 2026-03 | 27 | 89% | -2 min |
| 2026-04 | 28 | 96% | -12 min |
| 2026-05 | 31 | 97% | -5 min |
| 2026-06 | 30 | 90% | -6 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 26 | 85% |
| Tue | 26 | 92% |
| Wed | 25 | 84% |
| Thu | 25 | 96% |
| Fri | 27 | 78% |
| Sat | 14 | 86% |
| Sun | 25 | 80% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…