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

1,088 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

Leave before 9 am: 94% depart on time. After 4 pm it’s 62%.

Best time to leave 6–7 am 91% arrive on time from DEN

Best single flight DL 1731 DEN 06:30 → SEA 08:31 · 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).

DEN

% 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 1731	DEN 06:30	SEA 08:31	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 1731	DEN 06:30	SEA 08:31	3h 01m	364	91%	1.4%	95 min
DL 1358	DEN 13:15	SEA 15:23	3h 08m	86	80%	0.0%	66 min
DL 2759	DEN 18:35	SEA 20:37	3h 02m	31	52%	0.0%	65 min
DL 2543	DEN 18:41	SEA 20:44	3h 03m	55	57%	1.8%	78 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	DEN	SEA	3h 10m	79%	0.8%	1,088	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