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Monday, October 5 · our forecast odds · issued Mon 12:00 AM ET · 14 nonstops

Today: WN 3563 at 06:15 is the safest bet, 5% chance of being 15+ min late; evening flights run 13–18%.

Safest bet today WN 3563 SMF 06:15 → SNA 07:54 · 5% chance 15+ min late Riskiest WN 3834 SMF 18:30 → SNA 20:00 · 18% chance 15+ min late · usually 75% on time
Against a calm day 14% average chance a nonstop arrives 15+ min late; 11% 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.

WN 3563 Southwest SMF 06:15 SNA 07:54 5% 3% 0.4% no record
WN 3829 Southwest Flight history → SMF 06:10 SNA 07:35 7% 3% 0.4% 94%
WN 3979 Southwest SMF 11:35 SNA 13:14 12% 3% 0.5% no record
WN 503 Southwest Flight history → SMF 20:55 SNA 22:33 13% 3% 0.5% 83%
WN 3831 Southwest Flight history → SMF 11:50 SNA 13:20 14% 3% 0.5% 62%
WN 3329 Southwest Flight history → SMF 09:00 SNA 10:30 15% 4% 0.4% 96%worse than usual
WN 3981 Southwest SMF 15:50 SNA 17:29 15% 4% 0.5% no record
WN 3978 Southwest SMF 09:35 SNA 11:14 15% 4% 0.4% no record
WN 2738 Southwest Flight history → SMF 13:20 SNA 14:50 16% 3% 0.5% 80%
WN 3980 Southwest SMF 14:14 SNA 15:53 16% 4% 0.5% no record
WN 3982 Southwest SMF 17:55 SNA 19:33 16% 4% 0.5% no record
WN 3833 Southwest Flight history → SMF 15:50 SNA 17:20 17% 4% 0.5% 84%
WN 3832 Southwest Flight history → SMF 14:50 SNA 16:20 17% 4% 0.5% 74%
WN 3834 Southwest Flight history → SMF 18:30 SNA 20:00 18% 4% 0.5% 75%
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 Mon, Oct 5 (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