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: no forecasts for this route’s flights; their 12-month records are below.

Nonstops that day

All 1 nonstop →


AS 2022 Alaska flown by Horizon no forecast: 12-month record	PDX 10:30	BZN 13:10	10%	2%	0.0%	90%

Best connections that day, one ticket

Most reliable Quickest (80%+ on time)

Ranked by chance you reach Bozeman on time, from each leg’s forecast for the day. Total trip = scheduled departure to arrival (Bozeman is 1 h ahead of Portland). Layovers up to 4 hours. Pick a connection for its 12-month details.


Delta Details →	PDX 05:45 → SLC 08:33DL 1270	1h 22m Salt Lake City	SLC 09:55 → BZN 11:17DL 1971	4h 32m	99%	90%
Alaska Details →	PDX 05:00 → SEA 05:53AS 2431 · flown by Horizon	1h 13m Seattle	SEA 07:06 → BZN 09:46AS 2141 · flown by Horizon	3h 46m	96%	88%
Delta Details →	PDX 17:14 → SLC 20:06DL 1244	2h 59m Salt Lake City	SLC 23:05 → BZN 00:23 +1DL 2046	6h 09m	100%	86%
United Details →	PDX 05:00 → DEN 08:31UA 459	3h 01m Denver	DEN 11:32 → BZN 13:20UA 1248	7h 20m	99%	86%
Delta Details →	PDX 13:15 → SLC 16:07DL 1209	1h 13m Salt Lake City	SLC 17:20 → BZN 18:44DL 3676 · flown by SkyWest	4h 29m	95%	85%
Southwest Details →	PDX 07:30 → DEN 11:00WN 4099	1h 30m Denver	DEN 12:30 → BZN 14:10WN 4219	5h 40m	100%	85%
Delta Details →	PDX 09:45 → SLC 12:33DL 1203	1h 17m Salt Lake City	SLC 13:50 → BZN 15:13DL 3906 · flown by SkyWest	4h 28m	94%	85%
United Details →	PDX 08:50 → DEN 12:24UA 2375	2h 51m Denver	DEN 15:15 → BZN 17:10UA 6030 · flown by SkyWest	7h 20m	97%	83%
Tight connection: often missed
Alaska Details →	PDX 09:19 → SEA 10:21AS 427	1h 08m Seattle	SEA 11:29 → BZN 14:09AS 285	3h 50m	74%	53%
Alaska Details →	PDX 13:48 → SEA 14:43AS 2205 · flown by Horizon	52m Seattle	SEA 15:35 → BZN 18:18AS 3498 · flown by SkyWest	3h 30m	48%	39%

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