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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).

5
6
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8
9
10
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EUG
92
97
93
92
87
84
94
86
75
89
87
82
% 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
Seattle flights leaving EUG 5–6 pm: 3Close ×
AS 3094flown by SkyWest EUG 17:37 SEA 18:52 1h 15m 15 87% 0.0% 60 min
AS 2339flown by Horizon EUG 17:43 SEA 18:52 1h 09m 37 65% 0.0% 44 min
DL 4124flown by SkyWest EUG 17:45 SEA 19:05 1h 20m 345 91% 0.6% 73 min

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