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

1,059 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

No clear winner: Delta’s EUG → SEA flights land within a few points of 92% on time whatever the hour.

Best time to leave 6–7 am 94% 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.

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 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 4128flown by SkyWest	EUG 06:13	SEA 07:40	1h 27m	365	94%	0.3%	71 min
DL 4139flown by SkyWest	EUG 12:32	SEA 13:59	1h 27m	55	91%	0.0%	66 min
DL 3785flown by SkyWest	EUG 12:35	SEA 14:00	1h 25m	31	74%	0.0%	80 min
DL 4124flown by SkyWest	EUG 17:45	SEA 19:05	1h 20m	345	91%	0.6%	73 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	EUG	SEA	1h 26m	92%	0.8%	1,059	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