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Showing Southwest only (incl. its regional partners)All airlines ×
1,341 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

Leave before 9 am: 87% depart on time. After 4 pm it’s 43%.

Best time to leave 7–8 am 81% arrive on time from DEN

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
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9
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DEN
85
88
71
71
50
48
42
42
34
57
36
35
% 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.

No Southwest flight on this route ran 150+ times in the year.

All 5 Southwest 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.
WN 1713 DEN 07:45 SEA 09:45 3h 00m 50 84% 0.0% 37 min
WN 3051 DEN 10:05 SEA 12:05 3h 00m 50 76% 0.0% 31 min
WN 4130 DEN 12:30 SEA 14:25 2h 55m 49 37% 0.0% 36 min
WN 1716 DEN 19:50 SEA 21:50 3h 00m 49 33% 0.0% 59 min
WN 3856 DEN 21:10 SEA 23:10 2h 55m 57 28% 0.0% 63 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.
Southwest DEN SEA 3h 00m 62% 0.2% 1,341 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