Showing Delta only (incl. its regional partners)All airlines ×

1,013 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

Leave before 9 am: 85% depart on time. After 4 pm it’s 2 in 3.

Best time to leave 7–8 am 81% arrive on time from ORD

Best single flight DL 2231 ORD 07:45 → SLC 10:15 · 81% on time Avoid DL 2377 ORD 17:00 → SLC 19:32 · 67% 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).

ORD

% 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 2231	ORD 07:45	SLC 10:15	81%
DL 2377	ORD 17:00	SLC 19:32	67%

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 2231	ORD 07:45	SLC 10:15	3h 30m	365	81%	1.1%	116 min
DL 2249	ORD 14:09	SLC 16:40	3h 31m	48	68%	2.1%	99 min
DL 2377	ORD 17:00	SLC 19:32	3h 32m	154	67%	0.6%	109 min
DL 2376	ORD 19:37	SLC 22:15	3h 38m	48	48%	4.2%	97 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	ORD	SLC	3h 31m	73%	1.0%	1,013	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