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

The nonstop is quickest: Delta LGA → DSM (3h 12m), on time 2 times in 3. Southwest via Midway (5h 05m) is more reliable, 82%, but takes 1h 53m longer.

Best time to leave 12–1 pm 79% arrive on time from LGA

Best single flight AA 4395 LGA 18:29 → DSM 20:51 · 67% on time Avoid DL 4904 LGA 17:02 → DSM 19:15 · 65% 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).

LGA

% 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.


Delta (incl. Endeavor)	484	70%	4.8%	80 min
American (incl. Republic)	260	67%	3.8%	67 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.


AA 4395flown by Republic	LGA 18:29	DSM 20:51	67%
DL 4904flown by Endeavor	LGA 17:02	DSM 19:15	65%

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	LGA	DSM	3h 12m	70%	4.8%	484	Flying now
American	LGA	DSM	3h 22m	67%	3.8%	260	Flying now

Alternatives with one stop

All connections →


Delta Details →	LGA 06:05 → DTW 07:54DL 1231	51m Detroit	DTW 08:45 → DSM 09:44DL 5058 · flown by Endeavor	4h 39m	93%	74%

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