1,074 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

No clear winner: Delta’s SLC → BIL flights land within a few points of 88% on time whatever the hour.

Best time to leave 9–10 am 95% arrive on time from SLC

Best single flight DL 4038 SLC 09:40 → BIL 11:09 · 96% on time Avoid DL 1340 SLC 21:25 → BIL 22:50 · 80% 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).

SLC

% 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

Billings flights leaving SLC 9–10 pm: 1Close ×


DL 1340	SLC 21:25	BIL 22:50	1h 24m	365	80%	0.3%	59 min

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	88%	0.5%	63 min

Flights, best and worst

Flights in the Jun 6 – Jul 31, 2026 schedule that ran 150+ times in the year. Times are local. Pick a flight for its history.


DL 4038flown by SkyWest	SLC 09:40	BIL 11:09	96%
DL 3828flown by SkyWest	SLC 16:33	BIL 18:00	89%
DL 1340	SLC 21:25	BIL 22:50	80%

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	SLC	BIL	1h 29m	88%	0.5%	1,074	Flying now

Flying on a particular day? Pick a date above and the same ranking uses our forecast odds for each flight that day: Tomorrow.

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