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Showing Delta only (incl. its regional partners)All airlines ×
1,390 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 72%.

Best time to leave 8–9 am 89% arrive on time from BOS
Best single flight DL 5601 BOS 08:45 → CVG 11:09 · 88% on time Avoid DL 5801 BOS 20:45 → CVG 23:16 · 69% 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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BOS
91
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46
% 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 5601flown by Republic BOS 08:45 CVG 11:09 88%
DL 5789flown by Republic BOS 14:13 CVG 16:40 83%
DL 5620flown by Republic BOS 17:00 CVG 19:40 80%
DL 5801flown by Republic BOS 20:45 CVG 23:16 69%

All 6 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 5601flown by Republic BOS 08:45 CVG 11:09 2h 24m 347 88% 3.7% 41 min
DL 5611flown by Republic BOS 08:46 CVG 11:15 2h 29m 13 77% 0.0% 43 min
DL 5598flown by Republic BOS 11:40 CVG 14:07 2h 27m 65 86% 0.0% 54 min
DL 5789flown by Republic BOS 14:13 CVG 16:40 2h 27m 298 83% 1.3% 54 min
DL 5620flown by Republic BOS 17:00 CVG 19:40 2h 38m 192 80% 4.2% 61 min
DL 5801flown by Republic BOS 20:45 CVG 23:16 2h 31m 163 69% 5.5% 70 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 BOS CVG 2h 29m 83% 3.2% 1,390 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