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Showing Delta only (incl. its regional partners)All airlines ×
1,486 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

Leave before 9 am: 9 in 10 depart on time. After 4 pm it’s 3 in 5.

Best time to leave 7–8 am 88% arrive on time from RDU
Best single flight DL 5239 RDU 07:08 → JFK 09:00 · 89% on time Avoid DL 5219 RDU 20:01 → JFK 22:06 · 64% 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).

7
8
9
10
11
12
13
14
15
16
17
18
19
RDU
89
81
78
78
46
82
56
63
% 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 5239flown by Endeavor RDU 07:08 JFK 09:00 89%
DL 5294flown by Endeavor RDU 10:00 JFK 11:40 79%
DL 5009flown by Endeavor RDU 13:53 JFK 15:50 68%
DL 5219flown by Endeavor RDU 20:01 JFK 22:06 64%

All 4 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 5239flown by Endeavor RDU 07:08 JFK 09:00 1h 52m 348 89% 4.9% 107 min
DL 5294flown by Endeavor RDU 10:00 JFK 11:40 1h 40m 364 79% 2.7% 91 min
DL 5009flown by Endeavor RDU 13:53 JFK 15:50 1h 57m 253 68% 6.7% 87 min
DL 5219flown by Endeavor RDU 20:01 JFK 22:06 2h 05m 347 64% 7.2% 81 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 RDU JFK 1h 53m 77% 5.2% 1,486 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