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2,000 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 1–2 pm 90% 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).

6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
BOS
92
90
87
86
84
63
73
70
73
73
75
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
Hebron flights leaving BOS 8–9 pm: 1Close ×
DL 5801flown by Republic BOS 20:45 CVG 23:16 2h 31m 163 69% 5.5% 70 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. Republic) 1,390 83% 3.2% 56 min
American (incl. Envoy, Republic) 610 77% 2.3% 78 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 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%
AA 3408flown by Envoy BOS 18:20 CVG 21:00 71%
DL 5801flown by Republic BOS 20:45 CVG 23:16 69%
All 8 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 BOS CVG 2h 29m 83% 3.2% 1,390 Flying now
American BOS CVG 2h 41m 77% 2.3% 610 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