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 6% of the time at 10 am and barely half the time at 6 pm.

Nonstops


American	MIA	ORD	3h 31m	73%	1.9%	3,017	Flying now
United	MIA	ORD	3h 39m	72%	1.0%	1,070	Flying now
Frontier	MIA	ORD	3h 38m	73%	2.2%	46	Not flying now
Spirit	MIA	ORD	3h 25m	65%	6.6%	317	Not flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

Ranked by chance you reach Chicago on time. Total trip = scheduled departure to arrival, layover included (Chicago is 1 h behind Miami). Layovers up to 4 hours. Pick a connection for the details.


American Details →	MIA 07:35 → MCO 08:50AA 2090	2h 48m Orlando	MCO 11:38 → ORD 13:45AA 2067	7h 10m	100%	91%
American Details →	MIA 06:42 → BOS 10:06AA 815	1h 55m Boston	BOS 12:01 → ORD 14:02AA 1610	8h 20m	100%	90%
American Details →	MIA 06:21 → CLT 08:35AA 2187	2h 26m Charlotte	CLT 11:01 → ORD 12:19AA 2908	6h 58m	98%	86%
American Details →	MIA 08:00 → MSY 09:18AA 2168	3h 17m New Orleans	MSY 12:35 → ORD 15:21AA 4748 · flown by Republic	8h 21m	100%	86%
American Details →	MIA 08:02 → JAX 09:27AA 3609 · flown by Envoy	3h 45m Jacksonville	JAX 13:12 → ORD 15:00AA 4740 · flown by Republic	8h 02m	100%	82%
United Details →	MIA 06:30 → IAH 08:24UA 2074	1h 11m Houston	IAH 09:35 → ORD 12:29UA 2124	6h 59m	96%	82%
American Details →	MIA 06:19 → DCA 09:00AA 491	2h 35m Washington	DCA 11:35 → ORD 12:53AA 489	7h 34m	99%	80%
American Details →	MIA 08:21 → BNA 09:47AA 1521	55m Nashville	BNA 10:42 → ORD 12:38AA 3439 · flown by Envoy	5h 17m	93%	78%
Tight connection: often missed
American Details →	MIA 15:17 → AUS 17:19AA 1411	1h 07m Austin	AUS 18:26 → ORD 21:39AA 1398	7h 22m	58%	33%
American Details →	MIA 16:00 → ATL 18:04AA 1367	1h 39m Atlanta	ATL 19:43 → ORD 21:11AA 1372	6h 16m	73%	30%
American Details →	MIA 15:30 → DFW 17:50AA 1199	48m Dallas-Fort Worth	DFW 18:38 → ORD 21:22AA 1424	6h 52m	48%	18%

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

DEN · 1h 15m · leaves 08:57 3%

IAH · 1h 11m · leaves 06:30 4%

EWR · 1h 14m · leaves 07:07 4%

Afternoon and evening

DFW · 48m · leaves 15:30 52%

LGA · 56m · leaves 15:22 55%

BNA · 54m · leaves 15:19 65%

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.


Southwest WN 4086 MIA 05:25 → MCO United UA 2683 MCO 09:40 → ORD Connection details →	3h 10m	7h 23m	96%	90%
American AA 2090 MIA 07:35 → MCO United UA 2466 MCO 10:52 → ORD Connection details →	2h 02m	6h 27m	98%	90%
American AA 1226 MIA 05:25 → DFW United UA 1114 DFW 09:45 → ORD Connection details →	2h 05m	8h 01m	96%	84%

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