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

2,650 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

No clear winner: Delta’s SEA → PDX flights land within a few points of 87% on time whatever the hour.

Best time to leave 9–10 pm 94% arrive on time from SEA

Best single flight DL 3953 SEA 07:30 → PDX 08:39 · 94% on time Avoid DL 3913 SEA 20:59 → PDX 22:02 · 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).

SEA

% 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 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%

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 3953flown by SkyWest	SEA 07:30	PDX 08:39	1h 09m	365	94%	0.3%	64 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
DL 3802flown by SkyWest	SEA 10:35	PDX 11:42	1h 07m	349	86%	0.9%	63 min
DL 4062flown by SkyWest	SEA 13:35	PDX 14:46	1h 11m	110	85%	0.0%	43 min
DL 3918flown by SkyWest	SEA 16:01	PDX 17:09	1h 08m	323	85%	0.3%	44 min
DL 3923flown by SkyWest	SEA 18:55	PDX 20:02	1h 07m	55	80%	0.0%	52 min
DL 3997flown by SkyWest	SEA 20:15	PDX 21:16	1h 01m	170	92%	0.0%	57 min
DL 3913flown by SkyWest	SEA 20:59	PDX 22:02	1h 03m	332	85%	0.3%	49 min
DL 4472flown by SkyWest	SEA 22:50	PDX 23:54	1h 04m	43	67%	0.0%	41 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

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