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1,807 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

No clear winner: airlines and hours on this route all land within a few points of 7 in 10 on time.

Best time to leave 6–7 am 88% arrive on time from ORD
Best single flight UA 4507 ORD 17:50 → CHA 20:49 · 64% 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
ORD
88
77
78
82
74
74
72
69
67
73
76
70
% 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
Chattanooga flights leaving ORD 9–10 pm: 2Close ×
AA 3724flown by Envoy ORD 21:00 CHA 23:50 1h 50m 23 71% 8.7% 97 min
AA 4511flown by Republic ORD 21:02 CHA 23:51 1h 52m 106 61% 8.5% 98 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.
United (incl. GoJet, SkyWest, Republic) 1,403 72% 3.7% 92 min
American (incl. Envoy, Republic) 404 71% 4.5% 88 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.
UA 4507flown by GoJet ORD 17:50 CHA 20:49 64%
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.
United ORD CHA 1h 51m 72% 3.7% 1,403 Flying now
American ORD CHA 1h 50m 71% 4.5% 404 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