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

Leave before 9 am: 95% depart on time. After 4 pm it’s 2 in 3.

Best time to leave 6–7 am 93% arrive on time from CMH
Best single flight DL 5663 CMH 06:00 → BOS 08:13 · 92% 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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CMH
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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 5663flown by Republic CMH 06:00 BOS 08:13 92%

All 3 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 5663flown by Republic CMH 06:00 BOS 08:13 2h 13m 365 92% 1.4% 42 min
DL 5654flown by Republic CMH 11:07 BOS 13:13 2h 04m 144 87% 3.5% 48 min
DL 5653flown by Republic CMH 17:40 BOS 19:50 2h 13m 49 68% 4.1% 102 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 CMH BOS 2h 04m 82% 2.6% 995 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