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

No clear winner: Southwest’s HOU → MCI flights land within a few points of 78% on time whatever the hour.

Nonstops


Southwest	HOU	MCI	1h 55m	78%	0.3%	1,002	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

Ranked by chance you reach Kansas City on time. Total trip = scheduled departure to arrival, layover included. Layovers up to 4 hours. Pick a connection for the details.


Southwest Details →	HOU 07:50 → LAS 09:00WN 1998	1h 05m Las Vegas	LAS 10:05 → MCI 14:55WN 786	7h 05m	98%	98%
Southwest Details →	HOU 05:30 → DEN 06:55WN 1970	3h 05m Denver	DEN 10:00 → MCI 12:45WN 3114	7h 15m	100%	98%
Southwest Details →	HOU 08:15 → DEN 09:45WN 1971	2h 45m Denver	DEN 12:30 → MCI 15:05WN 351	6h 50m	98%	86%
Southwest Details →	HOU 05:50 → ATL 08:50WN 2622	2h 05m Atlanta	ATL 10:55 → MCI 12:00WN 3931	6h 10m	100%	85%
Delta Details →	HOU 06:00 → ATL 09:05DL 2557	2h 00m Atlanta	ATL 11:05 → MCI 12:15DL 2747	6h 15m	97%	81%
Delta Details →	HOU 10:16 → ATL 13:20DL 1509	2h 04m Atlanta	ATL 15:24 → MCI 16:35DL 1660	6h 19m	97%	80%
American Details →	HOU 06:03 → DFW 07:29AA 5492 · flown by PSA	2h 31m Dallas-Fort Worth	DFW 10:00 → MCI 11:44AA 3661 · flown by Envoy	5h 41m	89%	78%
Delta Details →	HOU 13:10 → ATL 16:18DL 1195	3h 17m Atlanta	ATL 19:35 → MCI 20:46DL 1130	7h 36m	97%	75%
Tight connection: often missed
American Details →	HOU 20:23 → DFW 21:50AA 3351 · flown by Envoy	54m Dallas-Fort Worth	DFW 22:44 → MCI 00:23 +1AA 1036	4h 00m	70%	32%
Southwest Details →	HOU 14:25 → PHX 15:05WN 3304	55m Phoenix	PHX 16:00 → MCI 20:35WN 3291	6h 10m	48%	20%
Southwest Details →	HOU 17:55 → DEN 19:40WN 1974	1h 08m Denver	DEN 20:48 → MCI 23:30WN 4758	5h 35m	36%	12%

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

LAS · 1h 05m · leaves 07:50 2%

DEN · 50m · leaves 05:30 9%

ATL · 1h 00m · leaves 06:00 10%

Afternoon and evening

DFW · 54m · leaves 20:23 30%

AUS · 55m · leaves 15:35 50%

PHX · 55m · leaves 14:25 52%

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 1970 HOU 05:30 → DEN Frontier F9 4828 DEN 10:16 → MCI Connection details →	3h 21m	7h 30m	100%	90%
Southwest WN 2622 HOU 05:50 → ATL Delta DL 2747 ATL 11:05 → MCI Connection details →	2h 15m	6h 25m	100%	85%
Southwest WN 1947 HOU 09:45 → ATL Delta DL 1660 ATL 15:24 → MCI Connection details →	2h 36m	6h 50m	96%	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