Showing Delta only (incl. its regional partners)All airlines ×

711 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

No clear winner: Delta’s JFK → PWM flights land within a few points of 4 in 5 on time whatever the hour.

Best time to leave 12–1 pm 81% arrive on time from JFK

Best single flight DL 5411 JFK 22:59 → PWM 00:52 · 81% on time Avoid DL 5399 JFK 12:45 → PWM 14:19 · 76% on time

Time of day × airport

Share of this route’s flights leaving within 15 minutes, by airport and scheduled departure hour, over Aug 2025 – Jul 2026. Blank: no flights then (or fewer than 40 in the year).

JFK

% of this route’s flights leaving within 15 min (small number: flights in the Jun 6 – Jul 31, 2026 schedule): 85+75–8465–7455–64under 55

Pick an hour to see this route’s flights leaving then.

Flights, best and worst

Flights in the Jun 6 – Jul 31, 2026 schedule that ran 150+ times in the year. Times are local. Pick a flight for its history.


DL 5411flown by Endeavor	JFK 22:59	PWM 00:52	81%
DL 5399flown by Endeavor	JFK 12:45	PWM 14:19	76%

All 3 Delta flights in the current schedule

Every flight that flew in the Jun 6 – Jul 31, 2026 schedule, with its record over Aug 2025 – Jul 2026. Times are local. Click a column to sort.


DL 5405flown by Endeavor	JFK 12:32	PWM 13:58	1h 26m	55	89%	0.0%	54 min
DL 5399flown by Endeavor	JFK 12:45	PWM 14:19	1h 34m	231	76%	1.7%	69 min
DL 5411flown by Endeavor	JFK 22:59	PWM 00:52	1h 53m	347	81%	8.4%	74 min

Nonstops by airline and airport

Arriving within 15 minutes, Aug 2025 – Jul 2026. Pick a row to see that airline’s flights on that airport pair.


Delta	JFK	PWM	1h 26m	81%	5.6%	711	Flying now

Flying on a particular day? Pick a date above and the same ranking uses our forecast odds for each flight that day: Tomorrow.

About this data: US DOT on-time records, Aug 2025 – Jul 2026, all US airlines; regional flights count under the airline that sells them. Schedules (which flights and connections exist, and their times) are as of Jun 6 – Jul 31, 2026; seasonal flights outside that window aren’t ranked. Rebuilt monthly. JSON