1,839 nonstop flights · Aug 2025 – Jul 2026 · US DOT on-time records, all US airlines

Leave before 9 am: 96% depart on time. After 4 pm it’s 7 in 10.

Best time to leave 5–6 am 96% arrive on time from CLE

Best single flight UA 690 CLE 08:55 → DEN 10:10 · 92% on time Avoid UA 486 CLE 16:38 → DEN 18:03 · 82% 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).

CLE

% 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

Denver flights leaving CLE 12–1 pm: 1Close ×


F9 4639	CLE 12:08	DEN 13:34	3h 26m	160	82%	1.9%	56 min

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	941	88%	0.1%	72 min
Southwest	604	78%	0.5%	58 min
Frontier	294	75%	2.0%	58 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 690	CLE 08:55	DEN 10:10	92%
F9 4639	CLE 12:08	DEN 13:34	82%
UA 486	CLE 16:38	DEN 18:03	82%

All 7 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	CLE	DEN	3h 16m	88%	0.1%	941	Flying now
Southwest	CLE	DEN	3h 20m	78%	0.5%	604	Flying now
Frontier	CLE	DEN	3h 26m	75%	2.0%	294	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