HOU to LAS flight delays & on-time performance
Nonstop flights from William P. Hobby Airport to Harry Reid International Airport · 1,235 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at HOU or LAS right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Houston (HOU) to Las Vegas (LAS) arrived on time 80% of the time in Aug 2025 – Jul 2026, better than the 78% national average.
- 0.3% were cancelled, and 5% arrived an hour or more late.
- Southwest Airlines is the only airline reporting nonstop flights on this route.
- Departures scheduled around 5am did best (98% on time); around 6pm did worst (61%).
- Wednesday was the most reliable day to fly (84% on time) and Friday the least (76%).
- The largest source of delay minutes was late-arriving aircraft (44%).
Which airline is most on time from HOU to LAS?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| Southwest Airlines | 80% | 0.3% | 11 min | 5.1% | 2,021 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 5am98%196 flights
- 6am98%163 flights
- 7am93%105 flights
- 8am91%189 flights
- 9am89%57 flights
- 10am85%34 flights
- 11am78%118 flights
- 12pm68%60 flights
- 1pm76%153 flights
- 2pm76%125 flights
- 3pm83%41 flights
- 4pm79%58 flights
- 5pm86%108 flights
- 6pm61%157 flights
- 7pm61%91 flights
- 8pm79%184 flights
- 9pm53%53 flights
- 10pm63%129 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday82%0.0% cancelled
- Tuesday84%0.4% cancelled
- Wednesday84%0.8% cancelled
- Thursday80%0.0% cancelled
- Friday76%0.6% cancelled
- Saturday80%0.4% cancelled
- Sunday79%0.3% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Late-arriving aircraft44%
- Airline (crew, maintenance, cleaning, fueling)33%
- Air traffic control & airport congestion18%
- Extreme weather4%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Air traffic control & airport congestion86%
- Airline (crew, maintenance, cleaning, fueling)14%
- Extreme weather0%
- Security0%
HOU to LAS: common questions
- How often are HOU to LAS flights on time?
- 80% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from Houston to Las Vegas cancelled?
- 0.3% of scheduled flights were cancelled (7 of 2,021).
- How long are typical delays?
- Across all flights the average arrival delay was 11 min (early arrivals count as zero). Flights that were late arrived 49 min behind schedule on average, and 5.1% of flights were an hour or more late.
- How long is taxi time at HOU?
- Flights on this route spent 13 min taxiing from the gate to takeoff on average.
Related routes
Return trip: LAS to HOU — 73% on time
More flights from Houston
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: HOU → LAS, nonstop flights by US airlines that report to the DOT. How we calculate this.