Flight OddsDL817 BOS → RDU
Delta Air Lines · Boston, MA to Raleigh/Durham, NC · 288 flights observed, 2025-07-01 to 2026-06-28 · 612 mi
DL817 covers more than one route in the data window — the stats below are for BOS → RDU, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
55%
Median delay
+7 min
90th percentile
+148 min
Cancellation rate
3%
How often is DL817 on time?
Across 288 flights on BOS → RDU from 2025-07-01 to 2026-06-28, DL817 arrived within 15 minutes of schedule 55% of the time. The median arrival delay was +7 min, and the worst 10% of flights arrived +148 min or later. 3% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 153 | 55% |
| 16-30 min | 27 | 10% |
| 31-60 min | 28 | 10% |
| 61-120 min | 39 | 14% |
| 2+ hrs | 33 | 12% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 25 | 40% | +51 min |
| 2025-08 | 25 | 48% | +30 min |
| 2025-09 | 25 | 32% | +51 min |
| 2025-10 | 25 | 24% | +62 min |
| 2025-11 | 20 | 70% | +17 min |
| 2025-12 | 17 | 59% | +17 min |
| 2026-01 | 20 | 80% | +11 min |
| 2026-02 | 23 | 65% | +20 min |
| 2026-03 | 27 | 56% | +48 min |
| 2026-04 | 26 | 65% | +17 min |
| 2026-05 | 25 | 64% | +25 min |
| 2026-06 | 22 | 64% | +29 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 44 | 64% |
| Tue | 49 | 57% |
| Wed | 48 | 60% |
| Thu | 47 | 43% |
| Fri | 47 | 55% |
| Sat | 1 | 100% |
| Sun | 44 | 48% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…