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7,426 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 barely half.

Best time to leave 6–7 am 90% arrive on time from ORD
Best airport pair MDW → SJC 70% on time, 1.5% cancelled, 519 flights
Best single flight UA 2106 ORD 21:35 → SFO 00:32 · 78% on time Avoid UA 2179 ORD 18:20 → SFO 21:18 · 48% 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
88
74
70
60
69
70
66
72
70
68
63
54
55
48
59
MDW
78
86
64
86
67
70
73
40
40
37
% 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.
United 4,121 71% 1.1% 76 min
American 1,777 63% 1.7% 74 min
Southwest 1,509 62% 1.4% 54 min
Alaska ORD→SFO only 19 – 5.3% 58 min

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.
UA 2106 ORD 21:35 SFO 00:32 78%
UA 1577 ORD 14:30 SFO 17:19 74%
AA 1253 ORD 15:18 SFO 17:58 70%
UA 2179 ORD 18:20 SFO 21:18 48%
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.
United ORD SFO 4h 52m 71% 1.1% 3,828 Flying now
Southwest MDW SJC 4h 35m 70% 1.5% 519 Flying now
United ORD SJC 4h 55m 69% 1.7% 293 Flying now
Southwest MDW OAK 4h 35m 65% 1.4% 505 Flying now
American ORD SFO 4h 47m 63% 1.8% 1,769 Flying now
Southwest MDW SFO 4h 40m 49% 1.2% 485 Flying now
American ORD SJC – 88%few flights 0.0% 8 Not flying now
Alaska ORD SFO 4h 48m 56%few flights 5.3% 19 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