63% of JFK → PWM flights arrived on time in June-August 2026 (161 flights). The most reliable was B6 508, on time 69% of the time on this route. Afternoon flights did best (69%), evening flights worst (56%). New York JFK (JFK): no delay reported. PWM (PWM): no delay reported.
Best time of day to fly JFK → PWM
| Afternoon (noon-5 PM) | |
| Evening (after 5 PM) |
Flights JFK → PWM, most reliable first
| Flight | Departs | On time on this route | Cancelled |
|---|---|---|---|
| B6 508 JetBlue | 12:20 PM | 3.3% | |
| B6 308 JetBlue | 10:45 PM | 14.5% |
JFK conditions · PWM → JFK · Cancellations
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From BTS on-time data, June-August 2026; flights with 20+ trips on this route. On-time rates cover each flight number's whole day, which can include other legs. Departure times are local.