Tickets
Any day
Saturday, October 10 · typical odds for a Saturday (too early for a weather forecast) · issued Sun 8:00 PM ET · connections flying that day

Sat, Oct 10: Delta via Minneapolis, leaving 05:40, is the safest bet: 86% chance of reaching Salt Lake City on time; the tightest one-ticket connections make it only 75% of the time.

Nonstops that day

All 2 nonstops →
DL 2023 Delta Flight history → PHL 07:30 SLC 10:10 10% 3% 0.5% 86%
AA 2630 American Flight history → PHL 19:42 SLC 22:57 21% 6% 0.9% 57%

Best connections that day, one ticket

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

DeltaDetails → PHL 05:40 → MSP 07:20DL 2791 50m Minneapolis MSP 08:10 → SLC 09:59DL 2628 6h 19m 92% 86%
UnitedDetails → PHL 16:14 → DEN 18:22UA 2644 2h 43m Denver DEN 21:05 → SLC 22:44UA 5646 · flown by SkyWest 8h 30m 97% 86%
DeltaDetails → PHL 06:00 → ATL 08:03DL 1269 2h 07m Atlanta ATL 10:10 → SLC 12:10DL 387 8h 10m 99% 85%
AmericanDetails → PHL 07:05 → PHX 09:05AA 428 1h 13m Phoenix PHX 10:18 → SLC 13:17AA 6462 · flown by SkyWest 8h 12m 95% 84%
DeltaDetails → PHL 07:10 → BOS 08:40DL 5740 · flown by Republic 2h 35m Boston BOS 11:15 → SLC 14:23DL 464 9h 13m 99% 83%
DeltaDetails → PHL 07:15 → ATL 09:17DL 1152 2h 39m Atlanta ATL 11:56 → SLC 13:50DL 663 8h 35m 99% 83%
DeltaDetails → PHL 12:27 → DTW 14:15DL 2331 3h 25m Detroit DTW 17:40 → SLC 19:34DL 765 9h 07m 100% 82%
AmericanDetails → PHL 13:04 → PHX 15:12AA 765 3h 29m Phoenix PHX 18:41 → SLC 21:25AA 4968 · flown by SkyWest 10h 21m 98% 81%
Tight connection: often missed
AmericanDetails → PHL 15:00 → DFW 17:50AA 402 58m Dallas-Fort Worth DFW 18:48 → SLC 20:34AA 558 7h 34m 75% 41%
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 Sat, Oct 10 (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