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 → SJC flights land within a few points of 85% on time whatever the hour.

Nonstops (seasonal or thin)


Southwest	HOU	SJC	4h 10m	85%	0.0%	364	Flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


Southwest Details →	HOU 07:45 → LGB 09:00WN 2019	3h 00m Long Beach	LGB 12:00 → SJC 13:10WN 4973	7h 25m	100%	93%
Southwest Details →	HOU 06:20 → PHX 06:55WN 2062	2h 45m Phoenix	PHX 09:40 → SJC 11:35WN 3336	7h 15m	98%	92%
Southwest Details →	HOU 07:50 → LAS 09:00WN 1998	3h 10m Las Vegas	LAS 12:10 → SJC 13:45WN 1242	7h 55m	98%	89%
Southwest Details →	HOU 06:25 → MDW 08:50WN 2039	1h 15m Chicago	MDW 10:05 → SJC 12:30WN 3752	8h 05m	100%	82%
Southwest Details →	HOU 07:30 → LAX 08:55WN 2007	2h 20m Los Angeles	LAX 11:15 → SJC 12:25WN 2432	6h 55m	100%	79%
Southwest Details →	HOU 07:45 → ONT 08:55WN 4391	1h 55m Ontario	ONT 10:50 → SJC 12:00WN 3162	6h 15m	96%	79%
Southwest Details →	HOU 05:30 → DEN 06:55WN 1970	55m Denver	DEN 07:50 → SJC 09:25WN 494	5h 55m	91%	78%
Southwest Details →	HOU 07:55 → SAN 09:05WN 3824	3h 20m San Diego	SAN 12:25 → SJC 13:55WN 1181	8h 00m	100%	71%
Tight connection: often missed
Delta Details →	HOU 13:10 → ATL 16:18DL 1195	50m Atlanta	ATL 17:08 → SJC 19:07DL 2136	7h 57m	75%	58%
American Details →	HOU 18:49 → DFW 20:15AA 6385 · flown by SkyWest	1h 09m Dallas-Fort Worth	DFW 21:24 → SJC 22:58AA 1940	6h 09m	62%	33%
Southwest Details →	HOU 13:45 → SAN 14:55WN 4486	1h 15m San Diego	SAN 16:10 → SJC 17:35WN 3540	5h 50m	62%	19%

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 05:30 9%

PHX · 50m · leaves 06:20 12%

LAS · 55m · leaves 07:50 12%

Afternoon and evening

ATL · 50m · leaves 13:10 25%

DFW · 1h 09m · leaves 18:49 38%

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 1998 HOU 07:50 → LAS Frontier F9 4103 LAS 11:39 → SJC Connection details →	2h 39m	7h 27m	98%	76%
Southwest WN 3824 HOU 07:55 → SAN Alaska AS 3429 SAN 12:59 → SJC Connection details →	3h 54m	8h 43m	100%	74%
Southwest WN 3566 HOU 14:45 → SEA Alaska AS 1310 SEA 20:25 → SJC Connection details →	3h 00m	9h 55m	92%	73%

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