Flight OddsDL5721 BOS → LGA
Delta Air Lines · Boston, MA to New York, NY · 323 flights observed, 2025-07-01 to 2026-06-30 · 184 mi
DL5721 covers more than one route in the data window — the stats below are for BOS → LGA, the one it has flown most recently. The others are linked under “Other routes”.
On-time arrival
68%
Median delay
-8 min
90th percentile
+71 min
Cancellation rate
9%
How often is DL5721 on time?
Across 323 flights on BOS → LGA from 2025-07-01 to 2026-06-30, DL5721 arrived within 15 minutes of schedule 68% of the time. The median arrival delay was -8 min, and the worst 10% of flights arrived +71 min or later. 9% of flights were cancelled.
Delay distribution
Arrival delay for completed flights (excludes cancellations and diversions).
| Arrival | Flights | Share |
|---|---|---|
| Early / on-time | 202 | 68% |
| 16-30 min | 23 | 8% |
| 31-60 min | 30 | 10% |
| 61-120 min | 26 | 9% |
| 2+ hrs | 14 | 5% |
Performance by month
| Month | Flights | On-time | Avg delay |
|---|---|---|---|
| 2025-07 | 25 | 56% | +36 min |
| 2025-08 | 30 | 80% | +0 min |
| 2025-09 | 27 | 70% | +5 min |
| 2025-10 | 29 | 52% | +26 min |
| 2025-11 | 27 | 67% | +12 min |
| 2025-12 | 28 | 79% | +4 min |
| 2026-01 | 15 | 87% | +16 min |
| 2026-02 | 11 | 73% | +24 min |
| 2026-03 | 20 | 45% | +32 min |
| 2026-04 | 30 | 70% | +8 min |
| 2026-05 | 30 | 73% | +7 min |
| 2026-06 | 23 | 74% | +8 min |
Performance by day of week
| Day | Flights | On-time |
|---|---|---|
| Mon | 41 | 76% |
| Tue | 44 | 75% |
| Wed | 41 | 63% |
| Thu | 42 | 52% |
| Fri | 42 | 69% |
| Sat | 42 | 90% |
| Sun | 43 | 53% |
Other routes
Related
Based on US Department of Transportation Bureau of Transportation Statistics on-time data. Loading live conditions and full charts…