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 70-minute layover misses 2% of the time at 7 am and 1 time in 3 at 8 pm.

Nonstops


United	IAH	LAS	3h 29m	85%	0.3%	2,595	Flying now
Frontier	IAH	LAS	3h 21m	70%	3.0%	369	Flying now
Spirit	IAH	LAS	3h 19m	82%	2.4%	466	Not flying now

Best connections, one ticket

Most reliable Quickest (80%+ on time)

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


United Details →	IAH 05:15 → DEN 06:47UA 1874	1h 18m Denver	DEN 08:05 → LAS 09:07UA 2316	5h 52m	97%	91%
United Details →	IAH 05:04 → ORD 07:59UA 1044	3h 01m Chicago	ORD 11:00 → LAS 13:05UA 2440	10h 01m	100%	87%
United Details →	IAH 07:20 → IAD 11:28UA 1549	1h 32m Dulles	IAD 13:00 → LAS 15:09UA 2156	9h 49m	97%	87%
United Details →	IAH 18:33 → LAX 20:10UA 2755	2h 49m Los Angeles	LAX 22:59 → LAS 00:21 +1UA 1546	7h 48m	100%	84%
United Details →	IAH 06:30 → DEN 08:02UA 2643	3h 20m Denver	DEN 11:22 → LAS 12:24UA 526	7h 54m	100%	82%
United Details →	IAH 14:54 → LAX 16:27UA 1951	2h 32m Los Angeles	LAX 18:59 → LAS 20:21UA 679	7h 27m	100%	81%
United Details →	IAH 09:53 → LAX 11:30UA 469	1h 42m Los Angeles	LAX 13:12 → LAS 14:34UA 2741	6h 41m	97%	80%
United Details →	IAH 05:22 → SFO 07:22UA 487	3h 20m San Francisco	SFO 10:42 → LAS 12:28UA 611	9h 06m	99%	79%
Tight connection: often missed
United Details →	IAH 11:55 → ORD 14:51UA 2827	1h 03m Chicago	ORD 15:54 → LAS 17:57UA 1875	8h 02m	69%	50%
United Details →	IAH 18:05 → SFO 20:10UA 1341	1h 05m San Francisco	SFO 21:15 → LAS 23:10UA 406	7h 05m	65%	50%
American Details →	IAH 13:36 → ORD 16:35AA 1915	55m Chicago	ORD 17:30 → LAS 19:28AA 3292	7h 52m	48%	27%

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

SFO · 1h 20m · leaves 05:22 2%

ORD · 1h 01m · leaves 05:04 3%

ATL · 1h 12m · leaves 05:40 3%

Afternoon and evening

ATL · 1h 07m · leaves 16:51 38%

ORD · 55m · leaves 13:36 52%

DFW · 1h 09m · leaves 18:53 74%

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.


United UA 6189 IAH 14:35 → OKC Frontier F9 3891 OKC 19:29 → LAS Connection details →	3h 14m	7h 44m	99%	84%
United UA 6178 IAH 07:25 → OKC Southwest WN 4665 OKC 12:55 → LAS Connection details →	3h 58m	8h 05m	100%	83%
United UA 2643 IAH 06:30 → DEN Southwest WN 1561 DEN 11:00 → LAS Connection details →	2h 58m	7h 25m	100%	83%

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