Showing Delta only (incl. its regional partners)All airlines ×

2,651 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

No clear winner: Delta’s PDX → SEA flights land within a few points of 9 in 10 on time whatever the hour.

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

Best single flight DL 4008 PDX 05:30 → SEA 06:41 · 95% on time Avoid DL 3953 PDX 09:30 → SEA 10:55 · 85% 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).

PDX

% 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.

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 4008flown by SkyWest	PDX 05:30	SEA 06:41	95%
DL 3818flown by SkyWest	PDX 11:20	SEA 12:36	91%
DL 3802flown by SkyWest	PDX 12:23	SEA 13:34	87%
DL 3918flown by SkyWest	PDX 17:50	SEA 19:05	86%
DL 3953flown by SkyWest	PDX 09:30	SEA 10:55	85%

All 10 Delta 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.


DL 4008flown by SkyWest	PDX 05:30	SEA 06:41	1h 11m	208	95%	0.0%	159 min
DL 3965flown by SkyWest	PDX 07:05	SEA 08:18	1h 13m	31	94%	0.0%	28 min
DL 4471flown by SkyWest	PDX 07:20	SEA 08:34	1h 14m	55	93%	0.0%	89 min
DL 3953flown by SkyWest	PDX 09:30	SEA 10:55	1h 25m	365	85%	0.5%	48 min
DL 3818flown by SkyWest	PDX 11:20	SEA 12:36	1h 16m	318	91%	0.3%	64 min
DL 4023flown by SkyWest	PDX 11:20	SEA 12:29	1h 09m	31	87%	0.0%	80 min
DL 3802flown by SkyWest	PDX 12:23	SEA 13:34	1h 11m	349	87%	0.9%	59 min
DL 4062flown by SkyWest	PDX 15:26	SEA 16:40	1h 15m	110	89%	0.0%	51 min
DL 3918flown by SkyWest	PDX 17:50	SEA 19:05	1h 15m	324	86%	0.3%	48 min
DL 3923flown by SkyWest	PDX 20:44	SEA 21:56	1h 12m	43	79%	0.0%	49 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	PDX	SEA	1h 11m	89%	0.3%	2,651	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