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5,303 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

Leave before 9 am: 93% depart on time. After 4 pm it’s 82%.

Best time to leave 7–8 am 91% arrive on time from SEA
Best single flight DL 3750 SEA 07:15 → BOI 09:56 · 93% on time Avoid AS 2326 SEA 15:49 → BOI 18:14 · 82% 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).

7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
SEA
92
93
89
90
79
80
88
80
87
86
86
79
82
73
81
% 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) 2,362 89% 0.2% 60 min
Alaska (incl. SkyWest, Horizon) 2,941 83% 0.4% 45 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 3750flown by SkyWest SEA 07:15 BOI 09:56 93%
DL 4127flown by SkyWest SEA 14:54 BOI 17:30 88%
DL 3959flown by SkyWest SEA 12:30 BOI 15:12 88%
DL 3817flown by SkyWest SEA 09:00 BOI 11:34 88%
AS 467 SEA 13:04 BOI 15:34 87%
· · ·
DL 3688flown by SkyWest SEA 16:35 BOI 19:13 86%
DL 4090flown by SkyWest SEA 21:20 BOI 23:51 85%
AS 2326flown by Horizon SEA 15:49 BOI 18:14 82%

All 24 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 248 SEA 07:07 BOI 09:40 1h 33m 79 90% 0.0% 38 min
DL 3750flown by SkyWest SEA 07:15 BOI 09:56 1h 41m 231 93% 0.0% 80 min
DL 3678flown by SkyWest SEA 08:35 BOI 11:15 1h 40m 55 91% 0.0% 44 min
DL 3817flown by SkyWest SEA 09:00 BOI 11:34 1h 34m 193 88% 0.5% 53 min
AS 2230flown by Horizon SEA 09:59 BOI 12:26 1h 27m 37 81% 0.0% 49 min
AS 428 SEA 10:12 BOI 12:47 1h 35m 15 73% 0.0% 34 min
AS 3493flown by SkyWest SEA 10:25 BOI 13:02 1h 37m 28 89% 0.0% 20 min
AS 2106flown by Horizon SEA 11:36 BOI 14:07 1h 31m 113 71% 1.8% 37 min
AS 2325flown by Horizon SEA 11:39 BOI 14:10 1h 31m 73 86% 0.0% 30 min
DL 3959flown by SkyWest SEA 12:30 BOI 15:12 1h 42m 172 88% 0.0% 76 min
AS 441 SEA 12:55 BOI 15:26 1h 31m 52 83% 0.0% 72 min
AS 467 SEA 13:04 BOI 15:34 1h 30m 190 87% 0.0% 56 min
DL 4127flown by SkyWest SEA 14:54 BOI 17:30 1h 36m 365 88% 0.3% 66 min
AS 2061flown by Horizon SEA 15:45 BOI 18:11 1h 26m 52 90% 0.0% 49 min
AS 2326flown by Horizon SEA 15:49 BOI 18:14 1h 25m 308 82% 0.0% 50 min
DL 3688flown by SkyWest SEA 16:35 BOI 19:13 1h 36m 361 86% 0.3% 56 min
AS 2109flown by Horizon SEA 17:40 BOI 20:07 1h 27m 138 82% 0.7% 54 min
AS 2352flown by Horizon SEA 17:45 BOI 20:11 1h 26m 28 79% 0.0% 34 min
DL 3692flown by SkyWest SEA 19:50 BOI 22:28 1h 38m 346 87% 0.3% 49 min
AS 3028flown by SkyWest SEA 19:55 BOI 22:24 1h 29m 27 81% 0.0% 41 min
AS 2034flown by Horizon SEA 19:59 BOI 22:24 1h 25m 51 86% 0.0% 67 min
DL 4090flown by SkyWest SEA 21:20 BOI 23:51 1h 31m 181 85% 0.6% 55 min
AS 550 SEA 21:29 BOI 23:58 1h 29m 48 77% 0.0% 32 min
AS 463 SEA 21:31 BOI 00:04 1h 33m 37 65% 0.0% 47 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 SEA BOI 1h 34m 89% 0.2% 2,362 Flying now
Alaska SEA BOI 1h 28m 83% 0.4% 2,941 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