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

Connect in the morning. The same one-hour layover misses 1 time in 10 at 8 am and 35% of the time at 8 pm.

Nonstops


United	SAN	IAH	3h 18m	85%	0.4%	1,696	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 San Diego). Layovers up to 4 hours. Pick a connection for the details.


American Details →	SAN 21:25 → CLT 05:12AA 1860	2h 30m Charlotte	CLT 07:42 → IAH 09:25 +1AA 1930	10h 00m	99%	91%
United Details →	SAN 20:32 → LAX 21:45UA 5636 · flown by SkyWest	3h 06m Los Angeles	LAX 00:51 → IAH 06:12 +1UA 491	7h 40m	100%	89%
United Details →	SAN 22:25 → ORD 04:36UA 1457	1h 53m Chicago	ORD 06:29 → IAH 09:18 +1UA 1799	8h 53m	98%	89%
United Details →	SAN 06:20 → LAX 07:21UA 1006	2h 49m Los Angeles	LAX 10:10 → IAH 15:40UA 277	7h 20m	99%	87%
United Details →	SAN 10:49 → LAX 11:58UA 5384 · flown by SkyWest	3h 22m Los Angeles	LAX 15:20 → IAH 20:49UA 2377	8h 00m	99%	86%
United Details →	SAN 11:01 → SFO 12:47UA 2309	3h 53m San Francisco	SFO 16:40 → IAH 22:52UA 2305	9h 51m	100%	85%
Delta Details →	SAN 06:15 → LAX 07:34DL 3743 · flown by SkyWest	2h 06m Los Angeles	LAX 09:40 → IAH 15:04DL 1143	6h 50m	99%	85%
United Details →	SAN 18:27 → SFO 20:07UA 1302	3h 52m San Francisco	SFO 23:59 → IAH 06:04 +1UA 505	9h 37m	100%	82%
Tight connection: often missed
United Details →	SAN 10:35 → ORD 16:52UA 1710	53m Chicago	ORD 17:45 → IAH 20:50UA 1954	8h 15m	74%	56%
American Details →	SAN 16:23 → PHX 17:49AA 2470	1h 03m Phoenix	PHX 18:52 → IAH 23:29AA 2357	5h 09m	60%	39%
United Details →	SAN 11:55 → SFO 13:41UA 2428	47m San Francisco	SFO 14:28 → IAH 20:40UA 2002	6h 45m	53%	37%

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

LAX · 1h 12m · leaves 10:49 5%

PHX · 1h 00m · leaves 06:20 11%

ORD · 54m · leaves 22:25 13%

Afternoon and evening

DEN · 49m · leaves 16:07 35%

PHX · 1h 03m · leaves 16:23 40%

DFW · 58m · leaves 16:32 59%

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 3480 SAN 22:40 → BNA United UA 396 BNA 06:30 → IAH Connection details →	1h 45m	8h 02m	96%	91%
Delta DL 4087 SAN 19:56 → LAX United UA 491 LAX 00:51 → IAH Connection details →	3h 37m	8h 16m	99%	90%
Southwest WN 2970 SAN 06:35 → LAS United UA 1711 LAS 10:25 → IAH Connection details →	2h 10m	7h 05m	98%	89%

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