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Friday, October 9 · typical odds for a Friday (too early for a weather forecast) · issued Sun 4:00 PM ET · connections flying that day

Fri, Oct 9: Delta via Atlanta, leaving 06:00, is the safest bet: 77% chance of reaching San Francisco on time.

Best connections that day, one ticket

Ranked by chance you reach San Francisco on time, from each leg’s forecast for the day. Total trip = scheduled departure to arrival (San Francisco is 2 h behind Houston). Layovers up to 4 hours. Pick a connection for its 12-month details.

DeltaDetails → HOU 06:00 → ATL 09:05DL 2557 3h 54m Atlanta ATL 12:59 → SFO 14:50DL 750 10h 50m 100% 77%
DeltaDetails → HOU 10:40 → ATL 13:46DL 1509 1h 49m Atlanta ATL 15:35 → SFO 17:31DL 823 8h 51m 97% 71%
SouthwestDetails → HOU 06:25 → MDW 08:50WN 2039 1h 15m Chicago MDW 10:05 → SFO 12:35WN 1546 8h 10m 100% 71%
DeltaDetails → HOU 12:55 → ATL 15:59DL 1195 2h 09m Atlanta ATL 18:08 → SFO 20:05DL 517 9h 10m 95% 69%
DeltaDetails → HOU 17:17 → ATL 20:32DL 2381 2h 08m Atlanta ATL 22:40 → SFO 00:36 +1DL 656 9h 19m 94% 69%
SouthwestDetails → HOU 05:30 → LAS 06:30WN 3671 1h 05m Las Vegas LAS 07:35 → SFO 09:10WN 2934 5h 40m 100% 64%
SouthwestDetails → HOU 08:15 → DEN 09:45WN 1971 1h 55m Denver DEN 11:40 → SFO 13:20WN 1719 7h 05m 99% 64%
SouthwestDetails → HOU 07:30 → SAN 08:40WN 3824 2h 35m San Diego SAN 11:15 → SFO 13:00WN 1677 7h 30m 100% 64%
How these are worked out. Each flight’s odds are our forecast for that day (typical odds until the weather forecast covers it); 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 Fri, Oct 9 (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