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Showing Delta only (incl. its regional partners)All airlines ×
1,249 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

Leave before 9 am: 87% depart on time. After 4 pm it’s 73%.

Best time to leave 6–7 pm 86% arrive on time from BUF
Best single flight DL 2664 BUF 06:00 → ATL 08:10 · 86% on time Avoid DL 2266 BUF 17:12 → ATL 19:25 · 80% 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).

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BUF
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% 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 2664 BUF 06:00 ATL 08:10 86%
DL 1384 BUF 12:14 ATL 14:23 84%
DL 2266 BUF 17:12 ATL 19:25 80%

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 2664 BUF 06:00 ATL 08:10 2h 10m 365 86% 2.5% 59 min
DL 1384 BUF 12:14 ATL 14:23 2h 09m 365 84% 2.2% 50 min
DL 2266 BUF 17:12 ATL 19:25 2h 13m 203 80% 0.5% 60 min
DL 2054 BUF 19:24 ATL 21:44 2h 20m 42 79% 0.0% 52 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 BUF ATL 2h 17m 84% 2.0% 1,249 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