Las Vegas to Houston

What the Data Says About LAS to IAH

The Las Vegas to Houston corridor (LAS → IAH) covers roughly 1,222 miles and is served by 14 carriers, based on Bureau of Transportation Statistics reporting. Across 21,832 flights in the dataset, this route posts a 82.2% on-time rate with an average delay of 72.6 minutes when flights run late. Over the most recent 24 months of BTS data, 7,832 flights were recorded on this pairing — 94 cancelled (1.2%) and 34 diverted (0.4%). Those baseline metrics tell you what to expect before you book.

Having 14 carriers on the route matters: more carriers generally means more daily schedule options, competitive pricing, and redundancy when flights are cancelled. With 21,832 total flights analyzed, the 82.2% on-time figure is statistically meaningful rather than a small-sample fluke. The 72.6-minute average delay applies only to flights that actually ran late, so it is not the average wait across all departures — the majority of flights on this route depart on time under the BTS definition of a delay (15+ minutes past schedule).

Looking at recent months, Dec 2025 posted the best performance on this corridor at 92% on-time, while Jul 2024 came in at 69% on-time — a 22-point gap between best and worst recent month. For travelers evaluating the LAS to IAH route, the combination of a 82.2% on-time rate, 72.6-minute average delay, 1.2% recent cancellation rate, and 14 available carriers is the concrete summary of what BTS data shows about reliability on this pairing.