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7,755 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 56%.

Best time to leave 6–7 am 91% arrive on time from ORD
Best single flight DL 2570 ORD 10:29 → BOS 13:59 · 76% on time Avoid AA 3107 ORD 19:20 → BOS 22:53 · 56% 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
92
89
83
80
76
71
69
62
65
53
54
54
62
56
49
60
% 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
Boston flights leaving ORD 4–5 pm: 1Close ×
AA 4384flown by Republic ORD 16:13 BOS 19:57 2h 51m 103 62% 6.8% 97 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.
JetBlue 545 73% 3.3% 100 min
Delta (incl. Republic) 1,313 71% 4.3% 87 min
United 2,735 70% 2.0% 80 min
American (incl. Envoy, Republic) 3,162 66% 3.3% 78 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.
DL 2570 ORD 10:29 BOS 13:59 76%
B6 312 ORD 10:56 BOS 14:23 74%
B6 1012 ORD 20:20 BOS 23:51 71%
UA 1779 ORD 21:41 BOS 01:14 68%
DL 2646 ORD 19:25 BOS 23:00 65%
· · ·
UA 1693 ORD 13:55 BOS 17:31 64%
AA 2682 ORD 20:29 BOS 00:05 62%
AA 3107 ORD 19:20 BOS 22:53 56%
All 27 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.
JetBlue ORD BOS 2h 31m 73% 3.3% 545 Flying now
Delta ORD BOS 2h 30m 71% 4.3% 1,313 Flying now
United ORD BOS 2h 31m 70% 2.0% 2,735 Flying now
American ORD BOS 2h 28m 66% 3.3% 3,162 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