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6,557 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 4 in 5.

Best time to leave 6–7 am 98% arrive on time from SEA
Best single flight DL 3953 SEA 07:30 → PDX 08:39 · 94% on time Avoid AS 498 SEA 21:28 → PDX 22:25 · 74% 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).

5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
SEA
94
98
94
91
93
91
80
79
88
88
82
88
83
82
81
84
82
68
78
% 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) 2,650 87% 0.3% 58 min
Alaska (incl. SkyWest, Horizon) 3,907 82% 0.8% 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 3953flown by SkyWest SEA 07:30 PDX 08:39 94%
DL 3997flown by SkyWest SEA 20:15 PDX 21:16 92%
DL 3818flown by SkyWest SEA 09:30 PDX 10:39 91%
DL 3802flown by SkyWest SEA 10:35 PDX 11:42 86%
DL 3918flown by SkyWest SEA 16:01 PDX 17:09 85%
· · ·
DL 3913flown by SkyWest SEA 20:59 PDX 22:02 85%
AS 498 SEA 21:28 PDX 22:25 74%

All 33 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 2432flown by Horizon SEA 06:42 PDX 07:37 55m 52 98% 1.9% 54 min
AS 2280flown by Horizon SEA 07:05 PDX 08:02 57m 28 100% 0.0% –
DL 3953flown by SkyWest SEA 07:30 PDX 08:39 1h 09m 365 94% 0.3% 64 min
AS 3132flown by SkyWest SEA 08:45 PDX 09:49 1h 04m 51 92% 0.0% 36 min
AS 3034flown by SkyWest SEA 08:45 PDX 09:47 1h 02m 28 68% 0.0% 30 min
DL 4023flown by SkyWest SEA 09:30 PDX 10:38 1h 08m 93 94% 0.0% 72 min
DL 3818flown by SkyWest SEA 09:30 PDX 10:39 1h 09m 256 91% 0.4% 35 min
AS 3090flown by SkyWest SEA 10:14 PDX 11:21 1h 07m 52 98% 1.9% 33 min
AS 3080flown by SkyWest SEA 10:30 PDX 11:31 1h 01m 20 95% 0.0% 16 min
DL 3802flown by SkyWest SEA 10:35 PDX 11:42 1h 07m 349 86% 0.9% 63 min
AS 2181flown by Horizon SEA 12:05 PDX 13:06 1h 01m 52 60% 0.0% 35 min
AS 2354flown by Horizon SEA 13:00 PDX 13:55 55m 111 78% 0.0% 30 min
DL 4062flown by SkyWest SEA 13:35 PDX 14:46 1h 11m 110 85% 0.0% 43 min
AS 3204flown by SkyWest SEA 13:45 PDX 14:48 1h 03m 116 88% 0.0% 61 min
AS 1384 SEA 15:50 PDX 16:50 1h 00m 28 64% 0.0% 35 min
AS 686 SEA 15:55 PDX 16:55 1h 00m 52 73% 0.0% 34 min
DL 3918flown by SkyWest SEA 16:01 PDX 17:09 1h 08m 323 85% 0.3% 44 min
AS 3258flown by SkyWest SEA 17:40 PDX 18:43 1h 03m 28 75% 0.0% 58 min
AS 2302flown by Horizon SEA 17:59 PDX 18:56 57m 52 75% 0.0% 55 min
DL 3923flown by SkyWest SEA 18:55 PDX 20:02 1h 07m 55 80% 0.0% 52 min
AS 2372flown by Horizon SEA 19:22 PDX 20:17 55m 51 82% 0.0% 48 min
AS 2107flown by Horizon SEA 19:25 PDX 20:21 56m 28 61% 0.0% 47 min
DL 3997flown by SkyWest SEA 20:15 PDX 21:16 1h 01m 170 92% 0.0% 57 min
AS 2387flown by Horizon SEA 20:25 PDX 21:22 57m 52 83% 0.0% 50 min
AS 1388 SEA 20:30 PDX 21:28 58m 28 86% 0.0% 39 min
DL 3913flown by SkyWest SEA 20:59 PDX 22:02 1h 03m 332 85% 0.3% 49 min
AS 498 SEA 21:28 PDX 22:25 57m 307 74% 1.0% 36 min
AS 2313flown by Horizon SEA 21:59 PDX 23:04 1h 05m 28 86% 0.0% 25 min
AS 1457 SEA 22:29 PDX 23:30 1h 01m 52 67% 0.0% 40 min
DL 4472flown by SkyWest SEA 22:50 PDX 23:54 1h 04m 43 67% 0.0% 41 min
AS 2282flown by Horizon SEA 23:03 PDX 23:59 56m 27 81% 0.0% 58 min
AS 2377flown by Horizon SEA 23:26 PDX 00:22 56m 22 86% 4.5% 51 min
AS 2136flown by Horizon SEA 23:26 PDX 00:22 56m 16 67% 6.2% 45 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 PDX 1h 03m 87% 0.3% 2,650 Flying now
Alaska SEA PDX 59m 82% 0.8% 3,907 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