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 80-minute layover misses 4% of the time at 10 am and 1 time in 3 at 7 pm.

Nonstops


United	MIA	DEN	4h 40m	84%	0.1%	910	Flying now
Frontier	MIA	DEN	4h 56m	83%	1.1%	351	Flying now
American	MIA	DEN	4h 35m	77%	0.8%	885	Flying now
Southwest	MIA	DEN	4h 35m	57%	0.0%	323	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


Delta Details →	MIA 08:17 → ATL 10:20DL 1261	2h 30m Atlanta	ATL 12:50 → DEN 14:04DL 957	7h 47m	99%	87%
United Details →	MIA 16:53 → IAH 18:56UA 1216	3h 14m Houston	IAH 22:10 → DEN 23:57UA 1066	9h 04m	97%	87%
United Details →	MIA 07:07 → EWR 10:11UA 1864	3h 19m Newark	EWR 13:30 → DEN 15:53UA 577	10h 46m	99%	85%
Delta Details →	MIA 06:00 → ATL 08:05DL 1249	3h 40m Atlanta	ATL 11:45 → DEN 12:59DL 706	8h 59m	99%	83%
Delta Details →	MIA 07:00 → SLC 10:04DL 2021	3h 16m Salt Lake City	SLC 13:20 → DEN 14:56DL 1623	9h 56m	98%	83%
United Details →	MIA 06:30 → IAH 08:24UA 2074	2h 07m Houston	IAH 10:31 → DEN 12:07UA 1409	7h 37m	100%	82%
Southwest Details →	MIA 05:25 → MCO 06:30WN 4086	1h 40m Orlando	MCO 08:10 → DEN 10:00WN 2629	6h 35m	96%	81%
United Details →	MIA 08:48 → IAH 10:42UA 2417	1h 51m Houston	IAH 12:33 → DEN 14:17UA 2168	7h 29m	94%	80%
Tight connection: often missed
Delta Details →	MIA 15:25 → JFK 18:54DL 1514	56m New York	JFK 19:50 → DEN 22:45DL 424	9h 20m	72%	47%
United Details →	MIA 16:10 → ORD 18:53UA 2106	1h 07m Chicago	ORD 20:00 → DEN 22:01UA 767	7h 51m	65%	45%
American Details →	MIA 13:45 → PHL 16:43AA 1684	47m Philadelphia	PHL 17:30 → DEN 19:45AA 3158	8h 00m	64%	40%

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

DFW · 1h 18m · leaves 07:00 6%

CLT · 1h 20m · leaves 07:57 11%

ORD · 46m · leaves 08:28 17%

Afternoon and evening

PHL · 47m · leaves 13:45 36%

DFW · 1h 00m · leaves 19:30 42%

BNA · 1h 15m · leaves 16:00 48%

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.


American AA 2090 MIA 07:35 → MCO United UA 1520 MCO 12:50 → DEN Connection details →	4h 00m	9h 16m	100%	93%
Delta DL 1056 MIA 06:35 → MSP United UA 2232 MSP 11:34 → DEN Connection details →	2h 09m	8h 10m	96%	90%
Delta DL 2355 MIA 06:30 → SEA United UA 1351 SEA 12:50 → DEN Connection details →	2h 50m	12h 12m	100%	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