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 SAN → HOU flights land within a few points of 72% on time whatever the hour.

Nonstops (seasonal or thin)


Southwest	SAN	HOU	3h 10m	72%	0.4%	962	Flying now

Best connections, any airlines

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 San Diego). Layovers up to 4 hours. Pick a connection for the details.


Southwest Details →	SAN 21:55 → MCO 05:55WN 4874	2h 10m Orlando	MCO 08:05 → HOU 09:35 +1WN 2637	9h 40m	100%	94%
Delta Details →	SAN 22:30 → ATL 05:50DL 819	2h 30m Atlanta	ATL 08:20 → HOU 09:28 +1DL 1509	8h 54m	99%	84%
Southwest Details →	SAN 06:35 → SJC 08:15WN 3536	1h 05m San Jose	SJC 09:20 → HOU 15:10WN 3673	6h 35m	100%	82%
Alaska + Southwesttwo ticketsDetails →	SAN 07:00 → DEN 10:33AS 1618	1h 57m Denver	DEN 12:30 → HOU 16:05WN 1544	7h 05m	100%	79%
Southwest Details →	SAN 22:40 → BNA 04:45WN 3480	3h 15m Nashville	BNA 08:00 → HOU 10:05 +1WN 532	9h 25m	100%	78%
Delta Details →	SAN 06:15 → ATL 13:43DL 729	1h 28m Atlanta	ATL 15:11 → HOU 16:23DL 2381	8h 10m	99%	78%
Southwest Details →	SAN 06:35 → LAS 08:15WN 2970	3h 10m Las Vegas	LAS 11:25 → HOU 16:35WN 4724	8h 00m	100%	76%
Alaska + Southwesttwo ticketsDetails →	SAN 21:06 → MCO 05:18AS 707	1h 37m Orlando	MCO 06:55 → HOU 08:25 +1WN 2636	9h 19m	79%	76%
Tight connection: often missed
Southwest Details →	SAN 12:10 → MDW 18:10WN 4163	1h 05m Chicago	MDW 19:15 → HOU 21:50WN 1431	7h 40m	60%	29%
Southwest Details →	SAN 13:20 → DEN 16:55WN 3496	1h 45m Denver	DEN 18:40 → HOU 22:15WN 606	6h 55m	68%	23%
Southwest Details →	SAN 12:55 → LAS 14:20WN 2183	50m Las Vegas	LAS 15:10 → HOU 20:20WN 2243	5h 25m	27%	10%

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

SJC · 1h 05m · leaves 06:35 0%

AUS · 1h 10m · leaves 06:30 4%

BWI · 1h 15m · leaves 21:40 19%

Afternoon and evening

PHX · 1h 15m · leaves 14:45 33%

MDW · 1h 05m · leaves 12:10 40%

DFW · 49m · leaves 16:32 68%

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.

The table above includes two-ticket connections (marked “two tickets”), held to the 90-minute minimum. One ticket only →

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