Itineraries flown on 20+ days in the Jun 6 – Jul 31, 2026 schedule · each leg’s record Aug 2025 – Jul 2026

Connect in the morning. The same one-hour layover misses 4% of the time at 11 am and 36% of the time at 8 pm.

Nonstops


Frontier	DEN	CLE	3h 04m	85%	1.4%	296	Flying now
United	DEN	CLE	2h 57m	83%	0.0%	940	Flying now
Southwest	DEN	CLE	2h 50m	63%	0.3%	605	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

Ranked by chance you reach Cleveland on time. Total trip = scheduled departure to arrival, layover included (Cleveland is 2 h ahead of Denver). Layovers up to 4 hours. Pick a connection for the details.


United Details →	DEN 06:04 → LAX 07:34UA 1093	1h 26m Los Angeles	LAX 09:00 → CLE 16:38UA 1084	8h 34m	99%	90%
United Details →	DEN 23:59 → IAD 05:27UA 1924	2h 53m Dulles	IAD 08:20 → CLE 09:41 +1UA 1926	7h 42m	100%	89%
Delta Details →	DEN 00:40 → ATL 05:42DL 302	1h 43m Atlanta	ATL 07:25 → CLE 09:10DL 1500	6h 30m	98%	88%
Southwest Details →	DEN 07:10 → MDW 10:30WN 114	1h 45m Chicago	MDW 12:15 → CLE 14:25WN 1813	5h 15m	100%	85%
Delta Details →	DEN 05:45 → ATL 10:42DL 341	2h 54m Atlanta	ATL 13:36 → CLE 15:23DL 2545	7h 38m	99%	85%
United Details →	DEN 23:59 → EWR 05:40UA 1745	2h 50m Newark	EWR 08:30 → CLE 10:08 +1UA 1833	8h 09m	100%	83%
United Details →	DEN 07:42 → IAH 11:15UA 1720	3h 20m Houston	IAH 14:35 → CLE 18:30UA 1934	8h 48m	100%	83%
United Details →	DEN 07:40 → SFO 09:18UA 2391	1h 22m San Francisco	SFO 10:40 → CLE 18:29UA 717	8h 49m	90%	83%
Tight connection: often missed
United Details →	DEN 15:40 → IAD 21:11UA 421	1h 04m Dulles	IAD 22:15 → CLE 23:44UA 2131	6h 04m	73%	62%
United Details →	DEN 16:29 → ORD 20:14UA 675	1h 06m Chicago	ORD 21:20 → CLE 23:49UA 457	5h 20m	64%	34%
American Details →	DEN 14:22 → ORD 18:16AA 1760	1h 13m Chicago	ORD 19:29 → CLE 21:55AA 1934	5h 38m	67%	27%

Same layover, different day-part

How often the first flight arrives too late to connect (45 min minimum), for one-ticket layovers of 45–80 minutes.

Morning

ATL · 1h 10m · leaves 05:45 4%

IAD · 1h 04m · leaves 06:13 6%

MSP · 1h 01m · leaves 06:00 8%

Afternoon and evening

ORD · 1h 06m · leaves 16:29 36%

PHL · 1h 01m · leaves 15:13 41%

MDW · 52m · leaves 15:00 50%

Delays build through the day, so an afternoon first leg eats the layover. A short connection is fine early in the morning and a gamble later on.

Mixing airlines

One ticketMiss it and the airline rebooks you; bags go through. 45 min is enough.

Separate ticketsMiss it and you buy a new ticket. Re-check bags, clear security again: we require 90 min.


United UA 2656 DEN 23:59 → BOS Delta DL 5674 BOS 08:25 → CLE Connection details →	2h 27m	8h 37m	99%	91%
United UA 1214 DEN 23:59 → PHL American AA 5847 PHL 08:37 → CLE Connection details →	3h 06m	8h 28m	97%	82%
Frontier F9 3294 DEN 06:30 → ATL Delta DL 880 ATL 15:26 → CLE Connection details →	3h 48m	8h 47m	99%	82%

Rank all connections, any airlines →

Regional partners count as the airline that sells them: SkyWest flying Delta Connection is one Delta ticket.

How these are worked out. Makes the connection: share of the last year’s flights where the first flight arrived with at least 45 minutes to spare (90 on separate tickets). Arrives on time: first flight not cancelled × connection made × second flight not cancelled and arriving within 15 minutes. Not yet counted: the second flight also leaving late (which helps), gate-to-gate distance at the hub, and rebooking after a missed connection.

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