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Showing Delta only (incl. its regional partners)All airlines ×
1,113 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

No clear winner: Delta’s SEA → PSC flights land within a few points of 86% on time whatever the hour.

Best time to leave 9–10 am 92% arrive on time from SEA
Best single flight DL 3992 SEA 10:35 → PSC 11:48 · 86% on time Avoid DL 4017 SEA 22:50 → PSC 23:59 · 83% 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).

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SEA
92
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79
% 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 3992flown by SkyWest SEA 10:35 PSC 11:48 86%
DL 3891flown by SkyWest SEA 13:30 PSC 14:45 83%
DL 4017flown by SkyWest SEA 22:50 PSC 23:59 83%

All 4 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 3992flown by SkyWest SEA 10:35 PSC 11:48 1h 13m 224 86% 0.4% 64 min
DL 3891flown by SkyWest SEA 13:30 PSC 14:45 1h 15m 217 83% 0.5% 54 min
DL 3955flown by SkyWest SEA 13:30 PSC 14:43 1h 13m 31 81% 0.0% 71 min
DL 4017flown by SkyWest SEA 22:50 PSC 23:59 1h 09m 364 83% 0.3% 101 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 PSC 1h 13m 86% 0.3% 1,113 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