1,074 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines
No clear winner: Delta’s BIL → SLC flights land within a few points of 92% on time whatever the hour.
Best time to leave
11 am–12 pm
96% arrive on time from BIL
Best single flight
DL 4038
BIL 11:50 → SLC 13:26 · 95% on time
Avoid
DL 3828
BIL 18:40 → SLC 20:17 · 86% on time
Time of day × airport
Share of this route’s flights leaving within 15 minutes, by airport and scheduled departure hour, over Aug 2025 – Jul 2026. Blank: no flights then (or fewer than 40 in the year).
% of this route’s flights leaving within 15 min (small number: flights in the Jun 6 – Jul 31, 2026 schedule):
85+75–8465–7455–64under 55
Airlines on this route
Arriving within 15 minutes. Regional flights count under the airline that sells them. Pick an airline to see its flights.
| Delta (incl. SkyWest) | 1,074 | 92% | 0.6% | 88 min |
Nonstops by airline and airport
Arriving within 15 minutes, Aug 2025 – Jul 2026. Pick a row to see that airline’s flights on that airport pair.
| Delta | BIL | SLC | 1h 36m | 92% | 0.6% | 1,074 | Flying now |
About this data: US DOT on-time records, Aug 2025 – Jul 2026, all US airlines; regional flights count under the airline that sells them. Schedules (which flights and connections exist, and their times) are as of Jun 6 – Jul 31, 2026; seasonal flights outside that window aren’t ranked. Rebuilt monthly. JSON