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7,427 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

Leave before 9 am: 93% depart on time. After 4 pm it’s 72%.

Best time to leave 6–7 am 93% arrive on time from SJC, 92% arrive on time from SFO
Best airport pair SJC → ORD 93% on time, 1.7% cancelled, 301 flights
Best single flight UA 2091 SFO 06:05 → ORD 12:41 · 93% on time Avoid UA 1954 SFO 10:05 → ORD 16:38 · 72% 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).

5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
SFO
94
94
94
90
75
59
71
68
66
69
70
67
69
75
70
OAK
91
84
68
SJC
95
90
70
52
87
% 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
Chicago flights leaving SFO 6–7 pm: 2Close ×
UA 1375 SFO 18:34 ORD 00:59 4h 25m 32 58% 0.0% 113 min
UA 1763 SFO 18:34 ORD 00:59 4h 25m 46 67% 0.0% 86 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.
Southwest 1,509 82% 0.5% 38 min
United 4,123 79% 1.0% 74 min
American 1,776 73% 1.7% 107 min
Alaska SFO→ORD only 19 – 5.3% 50 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 2091 SFO 06:05 ORD 12:41 93%
AA 2614 SFO 06:00 ORD 12:31 92%
UA 1568 SFO 08:15 ORD 14:50 85%
UA 2278 SFO 22:38 ORD 05:01 81%
UA 1482 SFO 16:21 ORD 22:59 81%
· · ·
UA 1954 SFO 10:05 ORD 16:38 72%
All 32 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 SJC ORD 4h 24m 92% 1.7% 293 Flying now
Southwest OAK MDW 4h 05m 85% 0.2% 505 Flying now
Southwest SJC MDW 4h 05m 85% 0.2% 519 Flying now
United SFO ORD 4h 26m 78% 0.9% 3,830 Flying now
Southwest SFO MDW 4h 05m 74% 1.2% 485 Flying now
American SFO ORD 4h 27m 73% 1.8% 1,768 Flying now
American SJC ORD – 100%few flights 0.0% 8 Not flying now
Alaska SFO ORD 4h 23m 53%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