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

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

No clear winner: Alaska’s SEA → STS flights land within a few points of 84% on time whatever the hour.

Best time to leave 6–7 pm 100% arrive on time from SEA

Best single flight AS 1321 SEA 09:54 → STS 11:58 · 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).

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.


AS 1321	SEA 09:54	STS 11:58	83%

All 3 Alaska 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 1321	SEA 09:54	STS 11:58	2h 04m	257	83%	1.2%	52 min
AS 2142flown by Horizon	SEA 17:46	STS 19:46	2h 00m	26	73%	0.0%	43 min
AS 3410flown by SkyWest	SEA 20:44	STS 22:51	2h 07m	42	68%	0.0%	44 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.


Alaska	SEA	STS	2h 04m	84%	2.7%	692	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