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 3% of the time at 10 am and 43% of the time at 11 pm.

Nonstops


United	ONT	IAH	3h 19m	91%	0.5%	365	Flying now
United	SNA	IAH	3h 12m	88%	0.0%	1,092	Flying now
United	LAX	IAH	3h 21m	88%	0.2%	3,438	Flying now
Delta	LAX	IAH	3h 25m	86%	1.1%	646	Flying now
American	LAX	IAH	3h 25m	83%	0.5%	408	Flying now
Southwest	LGB	HOU	3h 05m	79%	0.2%	461	Flying now
Frontier	ONT	IAH	3h 25m	76%	2.0%	196	Flying now
Southwest	LAX	HOU	3h 10m	73%	0.2%	1,194	Flying now
Frontier	LAX	IAH	3h 30m	70%	1.5%	332	Flying now
Southwest	ONT	HOU	3h 00m	67%	0.0%	362	Flying now
Southwest	BUR	HOU	3h 15m	89%	0.7%	147	Not flying now
Spirit	LAX	IAH	3h 19m	76%	1.3%	392	Not 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 Los Angeles). Layovers up to 4 hours. Pick a connection for the details.


Southwest Details →	LAX 05:05 → PHX 06:30WN 116	1h 35m Phoenix	PHX 08:05 → HOU 12:40WN 2833	5h 35m	100%	94%
United Details →	LAX 09:20 → SMF 10:56UA 5372 · flown by SkyWest	2h 19m Sacramento	SMF 13:15 → IAH 19:10UA 1949	7h 50m	100%	88%
United Details →	LAX 22:35 → ORD 04:51UA 353	1h 38m Chicago	ORD 06:29 → IAH 09:18 +1UA 1799	8h 43m	94%	86%
United Details →	LAX 06:00 → SFO 07:35UA 2647	1h 20m San Francisco	SFO 08:55 → IAH 15:07UA 2498	7h 07m	98%	86%
United Details →	LAX 05:10 → ORD 11:27UA 580	1h 13m Chicago	ORD 12:40 → IAH 15:40UA 1448	8h 30m	98%	85%
United Details →	LAX 10:10 → MCI 15:45UA 5426 · flown by SkyWest	2h 35m Kansas City	MCI 18:20 → IAH 20:40UA 6113 · flown by Mesa	8h 30m	100%	85%
Delta Details →	LAX 05:35 → SLC 08:30DL 2906	55m Salt Lake City	SLC 09:25 → IAH 13:28DL 2502	5h 53m	95%	85%
Alaska Details →	BUR 13:21 → SEA 16:03AS 580	1h 30m Seattle	SEA 17:33 → IAH 23:59AS 1579	8h 38m	96%	83%
Tight connection: often missed
American Details →	LAX 13:25 → ORD 19:59AA 3134	1h 08m Chicago	ORD 21:07 → IAH 23:51AA 3144	8h 26m	61%	30%
American Details →	LAX 15:00 → DFW 20:18AA 2994	52m Dallas-Fort Worth	DFW 21:10 → IAH 22:24AA 2209	5h 24m	55%	25%
United Details →	SNA 09:45 → SFO 11:21UA 5562 · flown by SkyWest	54m San Francisco	SFO 12:15 → IAH 18:27UA 1387	6h 42m	26%	20%

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 06:45 0%

ORD · 1h 13m · leaves 05:10 2%

DEN · 1h 10m · leaves 05:50 2%

Afternoon and evening

SFO · 57m · leaves 21:34 43%

DFW · 52m · leaves 15:00 45%

DEN · 1h 05m · leaves 16:20 62%

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 785 BUR 07:15 → LAS United UA 1711 LAS 10:25 → IAH Connection details →	1h 55m	6h 25m	100%	91%
Southwest WN 3868 SNA 08:50 → SMF United UA 1949 SMF 13:15 → IAH Connection details →	3h 00m	8h 20m	100%	88%
Southwest WN 4943 LAX 08:58 → ABQ United UA 6151 ABQ 12:13 → IAH Connection details →	2h 23m	4h 32m	98%	87%

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