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

No clear winner: Delta’s BOI → ATL flights land within a few points of 85% on time whatever the hour.

Best time to leave 1–2 pm 90% arrive on time from BOI

Best single flight DL 874 BOI 14:04 → ATL 20:19 · 89% 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).

BOI

% 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

Pick an hour to see this route’s flights leaving then.

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	545	85%	1.5%	73 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 874	BOI 14:04	ATL 20:19	89%

All 2 flights on this route →

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	BOI	ATL	4h 06m	85%	1.5%	545	Flying now

Alternatives with one stop

All connections →


Delta Details →	BOI 06:00 → SLC 07:11DL 2173	59m Salt Lake City	SLC 08:10 → ATL 13:53DL 897	5h 53m	90%	81%
Southwest Details →	BOI 07:20 → DEN 09:10WN 698	1h 05m Denver	DEN 10:15 → ATL 15:20WN 2258	5h 55m	98%	63%

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