tailodds FORECAST
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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 3670 at 14:25, with a 21% chance of arriving 15+ min late.

Nonstops that day

All 1 nonstop →
WN 3670 Southwest Flight history → SJC 14:25 GEG 16:30 21% 5% 0.5% 67%

Best connections that day, one ticket

Most reliable Quickest (80%+ on time)

Ranked by chance you reach Spokane on time, from each leg’s forecast for the day. Total trip = scheduled departure to arrival. Layovers up to 4 hours. Pick a connection for its 12-month details.
DeltaDetails → SJC 16:30 → LAX 17:56DL 3822 · flown by SkyWest 3h 29m Los Angeles LAX 21:25 → GEG 00:02 +1DL 3576 · flown by SkyWest 7h 32m 100% 86%
AlaskaDetails → SJC 06:17 → SEA 08:34AS 1314 1h 21m Seattle SEA 09:55 → GEG 11:00AS 2200 · flown by Horizon 4h 43m 95% 85%
UnitedDetails → SJC 08:45 → DEN 12:23UA 586 1h 23m Denver DEN 13:46 → GEG 15:11UA 324 6h 26m 96% 84%
AlaskaDetails → SJC 09:46 → PDX 11:31AS 2256 · flown by Horizon 2h 59m Portland PDX 14:30 → GEG 15:41AS 3262 · flown by SkyWest 5h 55m 98% 84%
DeltaDetails → SJC 06:00 → SLC 08:55DL 1314 2h 35m Salt Lake City SLC 11:30 → GEG 12:12DL 1452 6h 12m 98% 84%
SouthwestDetails → SJC 06:00 → LAS 07:35WN 2280 1h 45m Las Vegas LAS 09:20 → GEG 11:40WN 2306 5h 40m 100% 84%
AlaskaDetails → SJC 12:03 → PDX 13:48AS 2188 · flown by Horizon 3h 42m Portland PDX 17:30 → GEG 18:44AS 3052 · flown by SkyWest 6h 41m 98% 83%
DeltaDetails → SJC 09:45 → SLC 12:41DL 4026 · flown by SkyWest 2h 44m Salt Lake City SLC 15:25 → GEG 16:08DL 1503 6h 23m 98% 83%
Tight connection: often missed
DeltaDetails → SJC 14:55 → SEA 17:09DL 3789 · flown by SkyWest 50m Seattle SEA 17:59 → GEG 19:15DL 3832 · flown by SkyWest 4h 20m 75% 59%
SouthwestDetails → SJC 19:35 → LAS 21:10WN 5126 1h 00m Las Vegas LAS 22:10 → GEG 00:35 +1WN 4268 5h 00m 66% 43%
AlaskaDetails → SJC 08:20 → SEA 10:31AS 1426 52m Seattle SEA 11:23 → GEG 12:29AS 449 4h 09m 55% 35%
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