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

The best bet has a stop: Southwest via Phoenix (5h 30m) reaches Houston on time 92% of the time, against 78% on the nonstop.

Nonstops (seasonal or thin)


Southwest	OAK	HOU	3h 45m	79%	0.5%	376	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 Oakland). Layovers up to 4 hours. Pick a connection for the details.


Southwest Details →	OAK 05:10 → PHX 07:05WN 3066	1h 00m Phoenix	PHX 08:05 → HOU 12:40WN 2833	5h 30m	98%	92%
Southwest Details →	OAK 05:45 → DEN 09:15WN 3041	3h 15m Denver	DEN 12:30 → HOU 16:05WN 1544	8h 20m	100%	79%
Southwest Details →	OAK 07:35 → LAS 09:05WN 4348	2h 20m Las Vegas	LAS 11:25 → HOU 16:35WN 4724	7h 00m	100%	76%
Southwest Details →	OAK 05:00 → LAS 06:30WN 2325	1h 15m Las Vegas	LAS 07:45 → HOU 12:55WN 981	5h 53m	98%	74%
Southwest Details →	OAK 06:02 → ONT 07:28WN 4421	2h 12m Ontario	ONT 09:40 → HOU 14:50WN 4868	6h 48m	100%	69%
Southwest Details →	OAK 20:12 → LAX 21:38WN 2396	2h 02m Los Angeles	LAX 23:40 → HOU 05:00 +1WN 2402	6h 48m	89%	60%
Southwest Details →	OAK 15:45 → SAN 17:20WN 1926	2h 35m San Diego	SAN 19:55 → HOU 01:55 +1WN 4675	7h 25m	100%	54%
Southwest Details →	OAK 13:25 → DEN 16:50WN 3043	3h 55m Denver	DEN 20:45 → HOU 00:45 +1WN 2026	8h 50m	100%	54%
Tight connection: often missed
Southwest Details →	OAK 16:20 → PHX 18:20WN 878	1h 00m Phoenix	PHX 19:20 → HOU 23:15WN 4315	5h 35m	60%	26%

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

PHX · 1h 00m · leaves 05:10 2%

LAS · 1h 15m · leaves 05:00 3%

DEN · 1h 00m · leaves 05:45 16%

Afternoon and evening

PHX · 1h 00m · leaves 16:20 40%

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.


Alaska AS 3311 OAK 14:50 → SAN Southwest WN 4675 SAN 19:55 → HOU Connection details →	3h 29m	8h 20m	98%	53%
Alaska AS 491 OAK 06:22 → SEA Southwest WN 3619 SEA 11:05 → HOU Connection details →	2h 39m	9h 03m	98%	38%

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