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Today: only flights still to leave (it’s 5:36 am at San Francisco Bay Area); 6 already left
Sunday, October 4 · our forecast odds · issued Sun 7:00 AM ET · 36 nonstops

Today: WN 1752 at 06:06 is the safest bet, 7% chance of being 15+ min late; evening flights run 15–36%.

Safest bet today WN 1752 SJC 06:06 → MDW 12:11 · 7% chance 15+ min late Riskiest UA 1922 SFO 13:59 → ORD 20:20 · 38% chance 15+ min late
Against a calm day 23% average chance a nonstop arrives 15+ min late; 26% for the same flights on a calm-weather day

Every nonstop today

12-month record →

Ranked by the chance of arriving 15+ minutes late, with each flight’s on-time record over Aug 2025 – Jul 2026 beside it. Times are local. Pick a flight for its forecast. Click a column to sort. 6 flights that already left today are not shown.

WN 1752 Southwest SJC 06:06 MDW 12:11 7% 1% 0.1% no record
AA 2614 American Flight history → SFO 06:04 ORD 12:31 7% 2% 0.1% 92%
UA 2091 United Flight history → SFO 06:05 ORD 12:41 8% 1% 0.2% 93%
WN 1779 Southwest Flight history → SFO 08:10 MDW 14:10 9% 1% 0.1% 83%
AA 3250 American Flight history → SFO 06:58 ORD 13:16 9% 2% 0.1% 89%
UA 2451 United Flight history → SJC 06:30 ORD 12:54 10% 2% 0.2% 97%
UA 2740 United SJC 06:27 ORD 12:40 11% 2% 0.1% no record
WN 3448 Southwest SFO 09:56 MDW 16:00 12% 2% 0.1% no record
AA 359 American Flight history → SFO 08:00 ORD 14:27 14% 3% 0.1% 79%
UA 1568 United Flight history → SFO 08:15 ORD 14:50 15% 3% 0.1% 85%
WN 3824 Southwest SJC 23:01 MDW 05:08 15% 3% 0.5% no record
AA 2814 American SFO 09:16 ORD 15:39 17% 3% 0.1% no record
WN 623 Southwest SJC 22:55 MDW 05:00 19% 3% 0.5% no record
WN 3059 Southwest Flight history → OAK 23:55 MDW 06:00 19% 3% 0.6% 66%
WN 4357 Southwest Flight history → SJC 11:50 MDW 17:55 21% 4% 0.1% 65%
AA 2543 American Flight history → SFO 10:17 ORD 16:46 24% 5% 0.1% 71%
AA 2817 American SFO 17:19 ORD 23:38 25% 8% 0.2% no record
UA 1958 United Flight history → SFO 18:49 ORD 01:00 25% 6% 0.6% 92%worse than usual
AA 2885 American SFO 10:35 ORD 16:43 26% 5% 0.1% no record
AA 2537 American Flight history → SFO 16:20 ORD 23:00 26% 7% 0.1% 69%
AA 2642 American SFO 15:12 ORD 21:39 26% 9% 0.2% no record
UA 368 United Flight history → SFO 23:30 ORD 05:57 28% 5% 0.6% 86%worse than usual
UA 2278 United Flight history → SFO 22:38 ORD 05:01 30% 6% 0.6% 81%worse than usual
UA 1482 United Flight history → SFO 16:21 ORD 22:59 31% 8% 0.2% 81%worse than usual
UA 2827 United SFO 10:23 ORD 16:42 31% 4% 0.1% no record
AA 2358 American SFO 13:45 ORD 20:22 31% 8% 0.2% no record
UA 1147 United SFO 15:11 ORD 21:35 31% 7% 0.2% no record
AA 2554 American Flight history → SFO 23:07 ORD 05:20 33% 5% 0.9% 73%
UA 1650 United SJC 14:06 ORD 20:33 33% 6% 0.2% no record
UA 1887 United SFO 16:39 ORD 22:49 33% 8% 0.2% no record
AA 2113 American Flight history → SFO 23:02 ORD 05:03 33% 6% 0.9% 60%
WN 3782 Southwest SFO 23:41 MDW 05:47 35% 5% 0.6% no record
AA 2550 American Flight history → SFO 14:36 ORD 21:27 35% 9% 0.2% 37%
WN 3649 Southwest Flight history → SFO 23:40 MDW 05:55 36% 5% 0.6% 41%
UA 2317 United Flight history → SFO 12:00 ORD 18:35 37% 6% 0.1% 50%
UA 1922 United SFO 13:59 ORD 20:20 38% 7% 0.2% no record

Alternatives with one stop that day

All connections →
SouthwestDetails → OAK 05:45 → DEN 09:15WN 3041 50m Denver DEN 10:05 → MDW 13:30WN 755 5h 45m 91% 82%
How these are worked out. Each flight’s odds are our forecast for that day; flights of airlines we don’t forecast yet use their 12-month record and are marked. Makes the connection: the first flight’s 12-month lateness curve, scaled so its chance of arriving 15+ min late matches the day’s forecast, at the layover minus the 45-minute minimum (90 on separate tickets). Arrives on time: first flight not cancelled × connection made × second flight not cancelled × second flight within 15 minutes, each from the day’s forecast.

About this data: forecast odds from our model for Sun, Oct 4 (newest published update); 12-month records from US DOT on-time data, Aug 2025 – Jul 2026, all US airlines; regional flights count under the airline that sells them. JSON