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 LAS → HOU flights land within a few points of 3 in 4 on time whatever the hour.

Nonstops


Southwest	LAS	HOU	3h 00m	74%	0.4%	2,021	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


Southwest Details →	LAS 22:50 → MCO 06:25WN 4590	1h 40m Orlando	MCO 08:05 → HOU 09:35 +1WN 2637	8h 45m	98%	94%
Southwest Details →	LAS 20:20 → STL 01:55WN 2371	3h 25m St Louis	STL 05:20 → HOU 07:25 +1WN 3919	9h 05m	100%	88%
Southwest Details →	LAS 20:25 → MSY 01:55WN 2281	4h 00m New Orleans	MSY 05:55 → HOU 07:10 +1WN 4547	8h 45m	100%	86%
Southwest Details →	LAS 05:40 → SJC 07:00WN 2346	2h 20m San Jose	SJC 09:20 → HOU 15:10WN 3673	7h 30m	100%	82%
Southwest Details →	LAS 05:05 → DEN 07:55WN 2223	2h 20m Denver	DEN 10:15 → HOU 13:55WN 1543	6h 50m	100%	81%
Southwest Details →	LAS 23:25 → BNA 05:00WN 2191	3h 00m Nashville	BNA 08:00 → HOU 10:05 +1WN 532	8h 40m	100%	81%
Southwest Details →	LAS 23:55 → MDW 05:25WN 2276	1h 15m Chicago	MDW 06:40 → HOU 09:15 +1WN 4497	7h 20m	91%	81%
Southwest Details →	LAS 06:30 → DEN 09:20WN 2966	3h 10m Denver	DEN 12:30 → HOU 16:05WN 1544	7h 35m	100%	79%
Tight connection: often missed
Southwest Details →	LAS 20:55 → LAX 22:10WN 2256	1h 30m Los Angeles	LAX 23:40 → HOU 05:00 +1WN 2402	6h 05m	64%	42%
Southwest Details →	LAS 14:05 → MCI 18:55WN 3079	55m Kansas City	MCI 19:50 → HOU 21:55WN 2556	5h 50m	60%	34%
Southwest Details →	LAS 12:35 → MDW 18:10WN 2273	1h 05m Chicago	MDW 19:15 → HOU 21:50WN 1431	7h 15m	62%	31%

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 · 55m · leaves 06:30 2%

MDW · 1h 15m · leaves 23:55 9%

DFW · 56m · leaves 05:02 12%

Afternoon and evening

MDW · 1h 05m · leaves 12:35 38%

MCI · 55m · leaves 14:05 40%

DFW · 49m · leaves 16:53 43%

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.


Frontier F9 2016 LAS 00:59 → DEN Southwest WN 2215 DEN 07:20 → HOU Connection details →	3h 27m	7h 46m	97%	88%
Southwest WN 2179 LAS 22:50 → ATL Delta DL 1509 ATL 08:20 → HOU Connection details →	2h 35m	8h 34m	97%	84%
United UA 596 LAS 05:30 → DEN Southwest WN 1543 DEN 10:15 → HOU Connection details →	1h 43m	6h 25m	98%	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