Sun, Oct 4 has passed, so this is the 12-month record.

2,625 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

No clear winner: airlines and hours on this route all land within a few points of 87% on time.

Best time to leave 6–7 am 93% arrive on time from EUG

Best single flight DL 4128 EUG 06:13 → SEA 07:40 · 94% on time Avoid DL 4124 EUG 17:45 → SEA 19:05 · 91% 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).

EUG

% 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)	1,059	92%	0.8%	71 min
Alaska (incl. SkyWest, Horizon)	1,566	84%	1.3%	56 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 4128flown by SkyWest	EUG 06:13	SEA 07:40	94%
DL 4124flown by SkyWest	EUG 17:45	SEA 19:05	91%

All 17 flights on this route →

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	EUG	SEA	1h 26m	92%	0.8%	1,059	Flying now
Alaska	EUG	SEA	1h 15m	84%	1.3%	1,566	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