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Thursday, October 8 · typical odds for a Thursday (too early for a weather forecast) · issued Sun 12:00 PM ET · connections flying that day

Thu, Oct 8: Delta via Minneapolis, leaving 05:40, is the safest bet: 92% chance of reaching Portland on time; the tightest one-ticket connections make it only 73% of the time.

Nonstops that day

All 2 nonstops →
AS 1787 Alaska Flight history → PHL 17:46 PDX 20:37 19% 6% 0.8% 65%
AA 2245 American PHL 20:09 PDX 23:12 20% 7% 0.9% no record

Best connections that day, one ticket

Ranked by chance you reach Portland on time, from each leg’s forecast for the day. Total trip = scheduled departure to arrival (Portland is 3 h behind Philadelphia). Layovers up to 4 hours. Pick a connection for its 12-month details.

DeltaDetails → PHL 05:40 → MSP 07:20DL 2791 1h 45m Minneapolis MSP 09:05 → PDX 10:41DL 2415 8h 01m 98% 92%
DeltaDetails → PHL 11:36 → MSP 13:21DL 2688 2h 37m Minneapolis MSP 15:58 → PDX 17:35DL 2008 8h 59m 98% 90%
DeltaDetails → PHL 05:15 → ATL 07:19DL 1269 3h 41m Atlanta ATL 11:00 → PDX 12:58DL 2206 10h 43m 100% 89%
DeltaDetails → PHL 12:02 → ATL 14:05DL 2270 2h 47m Atlanta ATL 16:52 → PDX 18:56DL 503 9h 54m 99% 86%
UnitedDetails → PHL 10:00 → DEN 12:01UA 1537 3h 59m Denver DEN 16:00 → PDX 17:46UA 1337 10h 46m 100% 86%
UnitedDetails → PHL 06:00 → ORD 07:30UA 660 1h 21m Chicago ORD 08:51 → PDX 11:24UA 751 8h 24m 98% 86%
DeltaDetails → PHL 06:10 → DTW 07:48DL 1540 1h 06m Detroit DTW 08:54 → PDX 10:36DL 2171 7h 26m 95% 85%
DeltaDetails → PHL 14:32 → ATL 16:40DL 2279 3h 10m Atlanta ATL 19:50 → PDX 21:51DL 691 10h 19m 99% 85%
Tight connection: often missed
DeltaDetails → PHL 17:28 → DTW 19:15DL 1391 49m Detroit DTW 20:04 → PDX 21:48DL 913 7h 20m 73% 61%
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 Thu, Oct 8 (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