5,307 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

Leave before 9 am: 95% depart on time. After 4 pm it’s 82%.

Best time to leave 5–6 am 96% arrive on time from BOI

Best single flight DL 3775 BOI 06:43 → SEA 07:35 · 96% on time Avoid AS 2352 BOI 20:47 → SEA 21:21 · 60% 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 (incl. SkyWest)	2,365	87%	0.2%	62 min
Alaska (incl. SkyWest, Horizon)	2,942	78%	0.7%	49 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 3775flown by SkyWest	BOI 06:43	SEA 07:35	96%
DL 3750flown by SkyWest	BOI 10:36	SEA 11:41	92%
DL 3678flown by SkyWest	BOI 11:55	SEA 12:42	92%
DL 3740flown by SkyWest	BOI 08:42	SEA 09:38	85%
DL 4127flown by SkyWest	BOI 18:10	SEA 18:54	83%
· · ·
DL 3688flown by SkyWest	BOI 19:28	SEA 20:14	77%
AS 468	BOI 18:07	SEA 18:52	76%
AS 2352flown by Horizon	BOI 20:47	SEA 21:21	60%

All 26 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.


AS 423	BOI 06:23	SEA 07:00	1h 37m	52	100%	0.0%	–
AS 474	BOI 06:35	SEA 07:15	1h 40m	49	96%	0.0%	30 min
DL 3775flown by SkyWest	BOI 06:43	SEA 07:35	1h 52m	361	96%	0.0%	83 min
AS 3016flown by SkyWest	BOI 08:13	SEA 08:53	1h 40m	28	89%	0.0%	20 min
AS 2070flown by Horizon	BOI 08:15	SEA 08:50	1h 35m	52	88%	0.0%	57 min
DL 3740flown by SkyWest	BOI 08:42	SEA 09:38	1h 56m	345	85%	0.0%	88 min
AS 2166flown by Horizon	BOI 10:00	SEA 10:34	1h 34m	52	44%	0.0%	30 min
AS 2206flown by Horizon	BOI 10:05	SEA 10:39	1h 34m	212	79%	0.0%	46 min
DL 3750flown by SkyWest	BOI 10:36	SEA 11:41	2h 05m	208	92%	0.5%	129 min
AS 2159flown by Horizon	BOI 11:42	SEA 12:16	1h 34m	52	81%	0.0%	27 min
DL 3678flown by SkyWest	BOI 11:55	SEA 12:42	1h 47m	334	92%	0.0%	52 min
AS 2090flown by Horizon	BOI 11:56	SEA 12:30	1h 34m	28	96%	0.0%	42 min
DL 3817flown by SkyWest	BOI 12:15	SEA 12:55	1h 40m	31	90%	0.0%	101 min
AS 2235flown by Horizon	BOI 13:06	SEA 13:40	1h 34m	23	87%	0.0%	26 min
AS 2231flown by Horizon	BOI 13:06	SEA 13:40	1h 34m	14	85%	7.1%	75 min
AS 3405flown by SkyWest	BOI 13:59	SEA 14:39	1h 40m	28	93%	0.0%	66 min
DL 4157flown by SkyWest	BOI 15:14	SEA 15:53	1h 39m	31	87%	0.0%	29 min
DL 3958flown by SkyWest	BOI 15:29	SEA 16:11	1h 42m	50	82%	0.0%	51 min
AS 506	BOI 16:19	SEA 16:59	1h 40m	28	68%	0.0%	25 min
AS 740	BOI 16:27	SEA 17:06	1h 39m	52	54%	0.0%	38 min
AS 468	BOI 18:07	SEA 18:52	1h 45m	186	76%	0.0%	46 min
DL 4127flown by SkyWest	BOI 18:10	SEA 18:54	1h 44m	333	83%	0.6%	56 min
AS 296	BOI 18:13	SEA 18:53	1h 40m	52	67%	0.0%	32 min
DL 3688flown by SkyWest	BOI 19:28	SEA 20:14	1h 46m	226	77%	0.4%	44 min
AS 2352flown by Horizon	BOI 20:47	SEA 21:21	1h 34m	201	60%	2.0%	53 min
AS 2233flown by Horizon	BOI 20:51	SEA 21:29	1h 38m	28	54%	0.0%	36 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	BOI	SEA	1h 48m	87%	0.2%	2,365	Flying now
Alaska	BOI	SEA	1h 38m	78%	0.7%	2,942	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