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Any day
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: Southwest via Denver, leaving 06:56, is the safest bet: 88% chance of reaching Salt Lake City on time.

Nonstops that day

All 1 nonstop →
DL 2137 Delta Flight history → IND 07:55 SLC 09:26 6% 2% 0.5% 89%

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 Indianapolis). Layovers up to 4 hours. Pick a connection for its 12-month details.

DeltaDetails → IND 05:55 → ATL 07:30DL 3105 2h 40m Atlanta ATL 10:10 → SLC 12:10DL 387 8h 15m 99% 91%
DeltaDetails → IND 06:55 → ATL 08:36DL 3106 3h 20m Atlanta ATL 11:56 → SLC 13:50DL 663 8h 55m 100% 89%
DeltaDetails → IND 12:18 → MSP 13:04DL 2456 1h 21m Minneapolis MSP 14:25 → SLC 16:16DL 2658 5h 58m 98% 88%
SouthwestDetails → IND 06:56 → DEN 07:49WN 2787 52m Denver DEN 08:41 → SLC 10:12WN 3502 5h 16m 93% 88%
UnitedDetails → IND 07:00 → IAH 08:28UA 2358 1h 34m Houston IAH 10:02 → SLC 12:37UA 2242 7h 37m 97% 86%
DeltaDetails → IND 10:07 → ATL 11:43DL 3125 2h 12m Atlanta ATL 13:55 → SLC 15:51DL 423 7h 44m 100% 86%
UnitedDetails → IND 06:00 → ORD 06:20UA 3479 · flown by Republic 2h 35m Chicago ORD 08:55 → SLC 11:39UA 1972 7h 39m 99% 85%
AmericanDetails → IND 06:42 → CLT 08:25AA 2938 1h 49m Charlotte CLT 10:14 → SLC 12:29AA 1895 7h 47m 98% 85%
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