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

Leave before 9 am: 96% depart on time. After 4 pm it’s 7 in 10.

Best time to leave 6–7 am 95% arrive on time from IND
Best single flight DL 5631 IND 06:40 → BOS 09:07 · 94% on time Avoid DL 5627 IND 12:35 → BOS 15:12 · 66% 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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% 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 5631flown by Republic IND 06:40 BOS 09:07 94%
DL 5627flown by Republic IND 12:35 BOS 15:12 66%

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 5631flown by Republic IND 06:40 BOS 09:07 2h 27m 365 94% 1.6% 41 min
DL 5628flown by Republic IND 11:05 BOS 13:32 2h 27m 91 91% 1.1% 56 min
DL 5627flown by Republic IND 12:35 BOS 15:12 2h 37m 166 66% 6.0% 76 min
DL 5647flown by Republic IND 18:00 BOS 20:35 2h 35m 48 60% 2.1% 81 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 IND BOS 2h 26m 82% 2.3% 969 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