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2,624 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 85% on time.

Best time to leave 9–10 am 93% arrive on time from SEA
Best single flight DL 4124 SEA 15:45 → EUG 17:05 · 90% on time Avoid DL 3855 SEA 22:35 → EUG 23:51 · 88% 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).

7
8
9
10
11
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13
14
15
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18
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20
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SEA
85
93
94
79
89
88
80
86
85
90
84
83
% 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
Eugene flights leaving SEA 10–11 pm: 3Close ×
DL 3855flown by SkyWest SEA 22:35 EUG 23:51 1h 16m 360 88% 0.3% 73 min
AS 2047flown by Horizon SEA 22:49 EUG 23:59 1h 10m 52 90% 0.0% 23 min
AS 2146flown by Horizon SEA 22:49 EUG 23:59 1h 10m 28 93% 3.6% 34 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 90% 0.8% 65 min
Alaska (incl. SkyWest, Horizon) 1,565 82% 1.3% 48 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 4124flown by SkyWest SEA 15:45 EUG 17:05 90%
DL 4149flown by SkyWest SEA 11:30 EUG 12:59 88%
DL 3855flown by SkyWest SEA 22:35 EUG 23:51 88%
All 14 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 SEA EUG 1h 20m 90% 0.8% 1,059 Flying now
Alaska SEA EUG 1h 13m 82% 1.3% 1,565 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