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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
San Francisco Bay Area flights leaving ORD 4–5 pm: 1Close ×
UA 511 ORD 16:30 SFO 19:24 4h 54m 123 61% 0.0% 80 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 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