2,330 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

Leave before 9 am: 93% depart on time. After 4 pm it’s 72%.

Best time to leave 11 am–12 pm 94% arrive on time from DSM

Best single flight UA 4777 DSM 05:50 → DEN 06:59 · 89% on time Avoid UA 1781 DSM 17:17 → DEN 18:23 · 66% 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).

DSM

% 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.

Airlines on this route

Arriving within 15 minutes. Regional flights count under the airline that sells them. Pick an airline to see its flights.


United (incl. SkyWest)	1,612	85%	0.7%	90 min
Southwest	559	83%	0.5%	75 min
Frontier	159	81%	0.0%	83 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.


UA 4777flown by SkyWest	DSM 05:50	DEN 06:59	89%
F9 1677	DSM 14:19	DEN 15:23	81%
UA 1781	DSM 17:17	DEN 18:23	66%

All 10 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.


United	DSM	DEN	2h 11m	85%	0.7%	1,612	Flying now
Southwest	DSM	DEN	1h 55m	83%	0.5%	559	Flying now
Frontier	DSM	DEN	2h 04m	81%	0.0%	159	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