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

Leave before 9 am: 94% depart on time. After 4 pm it’s 73%.

Best time to leave 6–7 am 90% arrive on time from MDT
Best single flight DL 1255 MDT 06:04 → ATL 08:05 · 91% on time Avoid DL 2857 MDT 18:22 → ATL 20:34 · 83% 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).

6
7
8
9
10
11
12
13
14
15
16
17
18
MDT
94
87
79
79
67
73
% 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
Atlanta flights leaving MDT 11 am–12 pm: 1Close ×
DL 1248 MDT 11:56 ATL 13:58 2h 02m 343 86% 1.7% 80 min

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 85% 2.5% 84 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 1255 MDT 06:04 ATL 08:05 91%
DL 1248 MDT 11:56 ATL 13:58 86%
DL 2857 MDT 18:22 ATL 20:34 83%
All 5 flights on this route →

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 MDT ATL 2h 08m 85% 2.5% 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