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1,083 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

No clear winner: Delta’s ATL → MDT flights land within a few points of 82% on time whatever the hour.

Best time to leave 9–10 am 88% arrive on time from ATL
Best single flight DL 1248 ATL 09:19 → MDT 11:11 · 88% on time Avoid DL 1283 ATL 21:59 → MDT 23:55 · 78% 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).

9
10
11
12
13
14
15
16
17
18
19
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21
ATL
91
80
79
81
77
% 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.

Airlines on this route

Arriving within 15 minutes. Regional flights count under the airline that sells them. Pick an airline to see its flights.
Delta (incl. Endeavor) 1,083 82% 2.3% 62 min

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 1248 ATL 09:19 MDT 11:11 88%
DL 2857 ATL 15:41 MDT 17:37 79%
DL 1283 ATL 21:59 MDT 23:55 78%

All 5 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 1248 ATL 09:19 MDT 11:11 1h 52m 344 88% 2.0% 49 min
DL 4717flown by Endeavor ATL 11:15 MDT 13:17 2h 02m 26 81% 0.0% 60 min
DL 2517 ATL 12:20 MDT 14:10 1h 50m 18 67% 0.0% 88 min
DL 2857 ATL 15:41 MDT 17:37 1h 56m 288 79% 2.4% 52 min
DL 1283 ATL 21:59 MDT 23:55 1h 56m 208 78% 3.4% 88 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 ATL MDT 1h 52m 82% 2.3% 1,083 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