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 3% of the time at 12 pm and 32% of the time at 5 pm.

Nonstops


American	DEN	MIA	4h 01m	77%	0.9%	886	Flying now
United	DEN	MIA	4h 00m	76%	0.1%	910	Flying now
Frontier	DEN	MIA	4h 11m	74%	0.6%	349	Flying now
Southwest	DEN	MIA	3h 45m	66%	0.6%	323	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


United Details →	DEN 23:59 → EWR 05:40UA 1745	1h 20m Newark	EWR 07:00 → MIA 10:02 +1UA 2785	8h 03m	97%	89%
Delta Details →	DEN 19:00 → SLC 20:38DL 2663	2h 22m Salt Lake City	SLC 23:00 → MIA 05:42 +1DL 2040	8h 42m	96%	86%
United Details →	DEN 23:59 → IAD 05:27UA 1924	3h 18m Dulles	IAD 08:45 → MIA 11:35 +1UA 1073	9h 36m	100%	86%
Delta Details →	DEN 00:40 → ATL 05:42DL 302	1h 48m Atlanta	ATL 07:30 → MIA 09:30DL 2836	6h 53m	98%	85%
United Details →	DEN 05:00 → IAH 08:32UA 320	3h 28m Houston	IAH 12:00 → MIA 15:47UA 410	8h 47m	100%	84%
Delta Details →	DEN 00:59 → DTW 05:48DL 1096	3h 34m Detroit	DTW 09:22 → MIA 12:30DL 1468	9h 31m	97%	83%
American Details →	DEN 23:55 → PHL 05:32AA 2500	2h 43m Philadelphia	PHL 08:15 → MIA 11:12 +1AA 2184	9h 17m	93%	81%
Southwest Details →	DEN 23:50 → BWI 05:15WN 1501	2h 57m Baltimore	BWI 08:12 → MIA 10:52 +1WN 3278	9h 02m	100%	80%
Tight connection: often missed
American Details →	DEN 18:12 → LAX 19:53AA 4958 · flown by SkyWest	59m Los Angeles	LAX 20:52 → MIA 05:01 +1AA 2942	8h 49m	52%	39%
American Details →	DEN 15:11 → DFW 18:21AA 420	51m Dallas-Fort Worth	DFW 19:12 → MIA 22:59AA 1824	5h 48m	60%	37%
American Details →	DEN 12:39 → DFW 15:46AA 2359	48m Dallas-Fort Worth	DFW 16:34 → MIA 20:35AA 3308	6h 00m	55%	28%

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

JFK · 1h 17m · leaves 23:59 1%

EWR · 1h 11m · leaves 06:00 3%

DFW · 1h 05m · leaves 06:20 12%

Afternoon and evening

DFW · 48m · leaves 12:39 45%

LAX · 59m · leaves 18:12 48%

MCO · 50m · leaves 14:10 59%

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.


Delta DL 2787 DEN 10:25 → DTW American AA 3358 DTW 18:57 → MIA Connection details →	3h 37m	9h 45m	98%	90%
Frontier F9 2520 DEN 23:52 → MCO American AA 2593 MCO 08:35 → MIA Connection details →	3h 02m	7h 57m	95%	90%
United UA 1745 DEN 23:59 → EWR American AA 1152 EWR 08:00 → MIA Connection details →	2h 20m	9h 11m	99%	89%

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