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

No clear winner: airlines and hours on this route all land within a few points of 85% on time.

Nonstops (seasonal or thin)


American	MCI	MIA	3h 12m	87%	1.7%	653	Flying now
Southwest	MCI	MIA	3h 00m	75%	0.5%	191	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 1 h ahead of Kansas City). Layovers up to 4 hours. Pick a connection for the details.


United Details →	MCI 06:16 → IAH 08:25UA 740	3h 35m Houston	IAH 12:00 → MIA 15:47UA 410	8h 31m	98%	83%
American Details →	MCI 06:31 → CLT 10:00AA 1297	1h 01m Charlotte	CLT 11:01 → MIA 13:11AA 969	5h 39m	93%	80%
Delta Details →	MCI 05:38 → ATL 08:44DL 1204	2h 16m Atlanta	ATL 11:00 → MIA 13:04DL 1332	6h 26m	99%	79%
American Details →	MCI 05:30 → ORD 07:31AA 3845 · flown by Envoy	2h 33m Chicago	ORD 10:04 → MIA 14:16AA 1474	7h 47m	97%	79%
Southwest Details →	MCI 05:18 → BWI 08:42WN 2536	3h 03m Baltimore	BWI 11:45 → MIA 14:20WN 4737	8h 02m	100%	79%
Delta Details →	MCI 06:23 → MSP 07:54DL 1635	1h 01m Minneapolis	MSP 08:55 → MIA 13:37DL 2129	6h 14m	92%	77%
United Details →	MCI 06:05 → EWR 09:58UA 1969	1h 33m Newark	EWR 11:31 → MIA 14:38UA 2295	7h 33m	97%	74%
United Details →	MCI 14:56 → IAH 17:13UA 6124 · flown by Mesa	1h 48m Houston	IAH 19:01 → MIA 22:40UA 1829	6h 44m	95%	74%
Tight connection: often missed
United Details →	MCI 07:53 → ORD 09:45UA 1491	48m Chicago	ORD 10:33 → MIA 14:57UA 1620	6h 04m	73%	54%
United Details →	MCI 15:16 → ORD 17:05UA 2792	1h 00m Chicago	ORD 18:05 → MIA 22:27UA 2180	6h 11m	71%	47%

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

LGA · 1h 19m · leaves 06:00 7%

CLT · 1h 01m · leaves 06:31 7%

ATL · 56m · leaves 07:00 8%

Afternoon and evening

MSP · 1h 11m · leaves 16:04 10%

PHX · 1h 09m · leaves 14:18 10%

CLT · 57m · leaves 12:15 17%

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 2209 MCI 05:00 → MCO American AA 1712 MCO 11:02 → MIA Connection details →	2h 17m	6h 14m	98%	82%
United UA 1969 MCI 06:05 → EWR American AA 1822 EWR 12:20 → MIA Connection details →	2h 22m	8h 24m	98%	79%
Southwest WN 2585 MCI 08:18 → STL American AA 3954 STL 11:00 → MIA Connection details →	1h 38m	5h 28m	88%	79%

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