Route profile
LAS→HOU
Flight reliability, delays and best times to fly from Las Vegas to Houston, 1,235 miles.
Right now
Aviation weather is not currently a factor.
Aviation weather is not currently a factor.
Route reliability
July 2023 – July 2026
Better than 61% of comparable major US routes (4,598 compared)
Calculated from 6,317 flights. How this is calculated
LAS → HOU arrives on time 75.9% of the time; the return trip, HOU → LAS, arrives on time 80.2% of the time, a 4.3-point gap between the two directions of the same city pair.
LAS → HOU spends 21.2 minutes on the ground on a 1,235-mile trip: 15.6 minutes from pushback to wheels-up at LAS and 5.6 minutes from touchdown to gate at HOU.
Source: US DOT Bureau of Transportation Statistics · Data covering July 2023 – July 2026
What stands out
On-time performance swings unusually widely by time of day here, wider than 91% of 4,023 comparable routes.
91.9% on time for 5–9 AM departures, against 61.0% for 6–9 PM.
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – July 2026 · Ranked against every other route with the same kind of figure and at least 4,023 in the comparison.
When it goes wrong
July 2023 – July 2026
41 min late
against a median of 2 min early
Percentiles over 6,317 operations; cancelled and diverted flights are counted separately.
Will your connection be tight enough?
Layovers at HOU after arriving from LAS.
| Connection time | Chance of missing | Reads as |
|---|---|---|
| 30 min | 45% | Likely to miss |
| 45 min | 23% | High risk |
| 60 min | 14% | Some risk |
| 90 min | 5.6% | Some risk |
| 120 min | 2.8% | Low risk |
This is one leg of a connection. Gate changes and the next flight's own schedule matter too. And a connection can fail before delay is even the question — this route cancels 0.66% of the time and diverts 0.43% of the time, which a late arrival never shows up in.
Chance of missing is the share of 6,248 arrivals on this route that landed later than the connection time less 30 minutes to reach the next gate.
The worst tenth of arrivals on this route land at least 41 minutes late (90th-percentile gate arrival delay), over 6,317 operations.
Any other layover length: connection checker.
Best time to fly
LAS → HOU flights departing 5–9 AM arrived on time 91.9% of the time, against 61.0% for 6–9 PM departures, a gap of 30.9 percentage points.
By departure window
By departure hour
- 12 AM to 4 AM: too few flights to score
- 5 AM: 95.8% on time from 1,026 flights
- 6 AM: 94.1% on time from 152 flights
- 7 AM: 89.2% on time from 566 flights
- 8 AM: 86.0% on time from 485 flights
- 9 AM: 82.2% on time from 244 flights
- 10 AM: 83.1% on time from 209 flights
- 11 AM: 82.2% on time from 194 flights
- 12 PM: 74.8% on time from 374 flights
- 1 PM: 68.1% on time from 265 flights
- 2 PM: 52.8% on time from 325 flights
- 3 PM: 62.8% on time from 479 flights
- 4 PM: 65.1% on time from 245 flights
- 5 PM: 69.1% on time from 382 flights
- 6 PM: 58.1% on time from 591 flights
- 7 PM: 66.4% on time from 377 flights
- 8 PM: 59.9% on time from 294 flights
- 9 PM to 11 PM: too few flights to score
Departure windows with fewer than 120 flights are not scored.
Why LAS → HOU runs late
July 2023 – July 2026
the inbound aircraft was late, so this flight started late
crew, maintenance, boarding and fueling, all within the carrier’s control
airspace and airport capacity, including weather-driven flow control
weather severe enough to stop this flight specifically
screening or terminal security incidents
Share of the delay minutes US DOT attributed to each cause for LAS → HOU. Only delays of 15 minutes or more are attributed.
Late-arriving aircraft is the largest cause on LAS → HOU, at 49.3%: flights here mostly leave late because the plane came in late, and the day shows it: 5–9 AM departures arrived on time 91.9% of the time and 6–9 PM departures 61.0%.
Airlines on this route
Carriers with at least 200 flights, by the airline that operated each one.
| Carrier | Flights | On time | Cancelled | Median delay | Severe |
|---|---|---|---|---|---|
| Southwest Airlines | 6,317 | 75.9% | 0.66% | -2 min | 5.7% |
Other ways to fly Las Vegas to Houston
Airport pairs in the same two city markets, as the DOT defines them.
| Route | Flights | On time | Cancelled | Median delay | Score |
|---|---|---|---|---|---|
| LAS→IAH Las Vegas to Houston | 11,912 | 82.5% | 1.10% | -8 min | 73 |
| LAS→HOU this route Las Vegas to Houston | 6,317 | 75.9% | 0.66% | -2 min | 70 |
Weekly and seasonal patterns
By day of week
Saturday is historically the most reliable day and Friday the least, a gap of 10.6 percentage points.
By month
- Jan: 82.0%
- Feb: 80.9%
- Mar: 73.9%
- Apr: 79.7%
- May: 73.3%
- Jun: 71.7%
- Jul: 65.7%
- Aug: 76.7%
- Sep: 79.3%
- Oct: 73.9%
- Nov: 80.8%
- Dec: 78.0%
July is historically the weakest month and January the strongest, a spread of 16.3 percentage points.
Reliability over time
July 2023 – July 2026
- July 2023: 68.7% from 180 flights
- August 2023: 71.8% from 184 flights
- September 2023: 70.7% from 160 flights
- October 2023: 66.5% from 172 flights
- November 2023: 81.5% from 173 flights
- December 2023: 82.9% from 181 flights
- January 2024: 72.0% from 161 flights
- February 2024: 81.8% from 145 flights
- March 2024: 72.8% from 170 flights
- April 2024: 77.9% from 164 flights
- May 2024: 74.1% from 168 flights
- June 2024: 76.5% from 181 flights
- July 2024: 65.2% from 187 flights
- August 2024: 79.9% from 175 flights
- September 2024: 83.4% from 157 flights
- October 2024: 84.5% from 183 flights
- November 2024: 87.8% from 180 flights
- December 2024: 77.6% from 174 flights
- January 2025: 87.7% from 163 flights
- February 2025: 85.6% from 147 flights
- March 2025: 82.5% from 172 flights
- April 2025: 83.7% from 169 flights
- May 2025: 77.4% from 178 flights
- June 2025: 72.2% from 183 flights
- July 2025: 67.7% from 189 flights
- August 2025: 78.8% from 162 flights
- September 2025: 83.8% from 155 flights
- October 2025: 70.5% from 193 flights
- November 2025: 72.9% from 180 flights
- December 2025: 73.5% from 185 flights
- January 2026: 86.1% from 166 flights
- February 2026: 75.8% from 162 flights
- March 2026: 66.5% from 174 flights
- April 2026: 77.3% from 163 flights
- May 2026: 67.9% from 163 flights
- June 2026: 65.4% from 155 flights
- July 2026: 60.5% from 163 flights
Over the most recent 12 months (2025-08 to 2026-07), on-time arrivals averaged 73.2% against 80.6% in the 12 months before — declining by 7.4 percentage points.
Data and methodology
Calculated by FlyerIntel from 6,317 LAS → HOU flight records from the US DOT Bureau of Transportation Statistics, covering July 2023 – July 2026. Late means 15 or more minutes past scheduled arrival; cancelled and diverted flights are left out of on-time rates.
Full methodology · Data sources · Report a problem
Related research: How Long a Layover Needs to Be · Two Airlines on One Route · Best Time of Day to Fly From Major US Airports
Analysis last recomputed