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Any day
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: one nonstop, WN 1882 at 06:25, with a 6% chance of arriving 15+ min late.

Nonstops that day

All 1 nonstop →
WN 1882 Southwest Flight history → GEG 06:25 MDW 11:55 6% 1% 0.6% 96%

Best connections that day, one ticket

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

SouthwestDetails → GEG 06:00 → DEN 09:10WN 1333 3h 50m Denver DEN 13:00 → MDW 16:20WN 1601 8h 20m 100% 79%
SouthwestDetails → GEG 05:25 → PHX 08:00WN 1884 2h 00m Phoenix PHX 10:00 → MDW 15:15WN 4066 7h 50m 96% 77%
SouthwestDetails → GEG 14:15 → DEN 17:30WN 1880 3h 20m Denver DEN 20:50 → MDW 00:15 +1WN 1615 8h 00m 100% 76%
SouthwestDetails → GEG 09:50 → LAS 12:10WN 1782 3h 55m Las Vegas LAS 16:05 → MDW 21:45WN 2274 9h 55m 100% 69%
SouthwestDetails → GEG 11:50 → DEN 15:05WN 859 2h 30m Denver DEN 17:35 → MDW 21:00WN 1604 7h 10m 99% 69%
DeltaDetails → GEG 12:50 → ATL 20:19DL 787 56m Atlanta ATL 21:15 → MDW 22:15DL 1076 7h 25m 84% 67%
SouthwestDetails → GEG 12:55 → SAN 15:35WN 1887 1h 55m San Diego SAN 17:30 → MDW 23:30WN 3448 8h 35m 98% 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