1,225 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

Leave before 9 am: 96% depart on time. After 4 pm it’s 64%.

Best time to leave 6–7 am 97% arrive on time from BOI

Best single flight AS 2156 BOI 07:04 → SMF 07:34 · 94% 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.


Alaska (incl. Horizon)	365	94%	0.8%	84 min
Southwest	860	86%	0.1%	58 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.


AS 2156flown by Horizon	BOI 07:04	SMF 07:34	94%

All 5 flights in the current schedule

Every flight that flew in the Jun 6 – Jul 31, 2026 schedule, with its record over Aug 2025 – Jul 2026. Times are local. Click a column to sort.


WN 715	BOI 06:30	SMF 06:55	1h 25m	42	95%	0.0%	45 min
AS 2341flown by Horizon	BOI 07:00	SMF 07:29	1h 29m	28	100%	0.0%	–
AS 2156flown by Horizon	BOI 07:04	SMF 07:34	1h 30m	229	94%	1.3%	84 min
WN 716	BOI 12:08	SMF 12:35	1h 28m	34	91%	0.0%	31 min
WN 717	BOI 19:20	SMF 19:45	1h 25m	57	70%	0.0%	65 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.


Alaska	BOI	SMF	1h 34m	94%	0.8%	365	Flying now
Southwest	BOI	SMF	1h 30m	86%	0.1%	860	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