1,311 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 7 in 10.

Best time to leave 7–8 pm 90% arrive on time from SDF

Best single flight DL 5824 SDF 07:50 → DTW 09:16 · 90% on time Avoid DL 3993 SDF 10:39 → DTW 12:04 · 85% 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).

SDF

% 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.

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. Endeavor, SkyWest, Republic)	1,301	81%	0.9%	118 min
Spirit	10	–	0.0%	–

Dimmed: fewer than 150 flights in the year, too few to rank.

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 5824flown by Republic	SDF 07:50	DTW 09:16	90%
DL 3821flown by SkyWest	SDF 10:35	DTW 12:06	88%
DL 3993flown by SkyWest	SDF 10:39	DTW 12:04	85%

All 6 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 5824flown by Republic	SDF 07:50	DTW 09:16	1h 26m	365	90%	0.3%	79 min
DL 3821flown by SkyWest	SDF 10:35	DTW 12:06	1h 31m	174	88%	1.7%	76 min
DL 3993flown by SkyWest	SDF 10:39	DTW 12:04	1h 25m	170	85%	0.6%	150 min
DL 5160flown by Endeavor	SDF 14:19	DTW 15:46	1h 27m	46	71%	2.2%	53 min
DL 4947flown by Endeavor	SDF 17:26	DTW 18:58	1h 32m	55	65%	1.8%	95 min
DL 3957flown by SkyWest	SDF 17:52	DTW 19:15	1h 23m	108	70%	0.9%	117 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	SDF	DTW	1h 27m	81%	0.9%	1,301	Flying now
Spirit	SDF	DTW	–	100%few flights	0.0%	10	Not 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