Today: only flights still to leave (it’s 3:38 am at Billings)

Monday, October 5 · our forecast odds · issued Mon 4:00 AM ET · connections flying that day

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

Nonstops today


AS 2297 Alaska flown by Horizon no forecast: 12-month record	BIL 15:43	PDX 16:46	6%	4%	1.9%	94%

Best connections today, one ticket

Most reliable Quickest (80%+ on time)

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


Delta Details →	BIL 05:20 → SLC 06:44DL 1360	1h 01m Salt Lake City	SLC 07:45 → PDX 08:37DL 1203	4h 17m	97%	91%
Delta Details →	BIL 06:24 → MSP 09:27DL 2254	1h 32m Minneapolis	MSP 10:59 → PDX 12:37DL 1661	7h 13m	98%	87%
United Details →	BIL 05:00 → DEN 06:53UA 5829 · flown by SkyWest	1h 12m Denver	DEN 08:05 → PDX 09:47UA 1247	5h 47m	96%	86%
Delta Details →	BIL 18:34 → SLC 20:09DL 3828 · flown by SkyWest	2h 41m Salt Lake City	SLC 22:50 → PDX 23:44DL 1373	6h 10m	99%	83%
Delta Details →	BIL 11:50 → SLC 13:22DL 4038 · flown by SkyWest	1h 55m Salt Lake City	SLC 15:17 → PDX 16:09DL 1244	5h 19m	100%	82%
United Details →	BIL 07:02 → DEN 08:59UA 372	2h 28m Denver	DEN 11:27 → PDX 13:09UA 644	7h 07m	98%	81%
Alaska Details →	BIL 06:00 → SEA 07:12AS 2247 · flown by Horizon	3h 02m Seattle	SEA 10:14 → PDX 11:21AS 3090 · flown by SkyWest	6h 21m	100%	81%
United Details →	BIL 10:40 → DEN 12:33UA 5463 · flown by SkyWest	3h 27m Denver	DEN 16:00 → PDX 17:46UA 1337	8h 06m	100%	81%
Tight connection: often missed
United Details →	BIL 10:40 → DEN 12:33UA 5463 · flown by SkyWest	54m Denver	DEN 13:27 → PDX 15:13UA 2455	5h 33m	75%	60%

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