Route profile
HOU→LAS
Flight reliability, delays and best times to fly from Houston to Las Vegas, 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 76% of comparable major US routes (4,598 compared)
Calculated from 6,278 flights. How this is calculated · What counts as on time
HOU → LAS arrives on time 80.2% of the time; the return trip, LAS → HOU, arrives on time 75.9% of the time, a 4.3-point gap between the two directions of the same city pair.
HOU → LAS spends 18.3 minutes on the ground on a 1,235-mile trip: 12.5 minutes from pushback to wheels-up at HOU and 5.8 minutes from touchdown to gate at LAS.
Source: US DOT Bureau of Transportation Statistics · Data covering July 2023 – July 2026
What sets this route apart
Where HOU to LAS differs most from similar routes by hour, weekday, month and airline, July 2023 – July 2026.
HOU to LAS is at its best against routes of similar length for flights scheduled at 8 PM: 74.2% arrive on time, 9.2 points ahead of the 65.0% those routes manage at that hour. Against all other routes the gap is 6.8 points.
HOU to LAS holds up on Saturdays better than routes of similar length do: 84.4% on time to their 77.5%, a 6.9 points lead. Against all other routes the gap is 5.3 points.
August is kinder to HOU to LAS than to routes of similar length: 84.1% on time against 75.0%, 9.1 points better. Against all other routes the gap is 7.6 points.
Southwest Airlines does better on HOU to LAS than on its routes of similar length: 80.2% on time here, 75.6% there, 4.6 points apart. Against all other routes the gap is 2.8 points.
HOU to LAS against comparable routes
July 2023 – July 2026| Measure | This route | Compared with | Them | Gap | Flights behind it |
|---|---|---|---|---|---|
| Hour: 8 PM departures | 74.2% | routes of similar length | 65.0% | +9.2 pts | 458 here, 84,244 there |
| Weekday: Saturday | 84.4% | routes of similar length | 77.5% | +6.9 pts | 718 here, 252,801 there |
| Month: August | 84.1% | routes of similar length | 75.0% | +9.1 pts | 497 here, 152,821 there |
| Airline: Southwest Airlines | 80.2% | routes of similar length | 75.6% | +4.6 pts | 6,232 here, 392,345 there |
Each comparison pools the flights of other routes, with this route’s own left out. Similar length means within 15% of this route’s 1,235 miles, with at least 5 such routes. A bucket is set against the most comparable group that has enough flights: similar length, then the same origin (at least 3 routes), then all other routes. Hours, weekdays and months appear only where both sides have 120 completed flights, and airlines where both have 600. The gap must be at least 2 points and 2 standard errors, and only the largest gap each way is kept per measure. These are differences in the flights counted, not causes.
When it goes wrong
July 2023 – July 2026
37 min late
against a median of 5 min early
Percentiles over 6,278 operations; cancelled and diverted flights are counted separately.
Will your connection be tight enough?
Layovers at LAS after arriving from HOU.
| Connection time | Chance of missing | Reads as |
|---|---|---|
| 30 min | 38% | Likely to miss |
| 45 min | 19% | High risk |
| 60 min | 12% | Some risk |
| 90 min | 5.2% | Some risk |
| 120 min | 2.9% | 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 0.65% of the time and diverts 0.08% of the time, which a late arrival never shows up in.
Chance of missing is the share of 6,232 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 37 minutes late (90th-percentile gate arrival delay), over 6,278 operations.
Any other layover length: connection checker.
Best time to fly
HOU → LAS flights departing 5–9 AM arrived on time 94.1% of the time, against 68.8% for 9 PM–5 AM departures, a gap of 25.3 percentage points.
By departure window
By departure hour
- 12 AM to 4 AM: too few flights to score
- 5 AM: 97.4% on time from 569 flights
- 6 AM: 95.5% on time from 429 flights
- 7 AM: 91.7% on time from 353 flights
- 8 AM: 91.1% on time from 563 flights
- 9 AM: 86.7% on time from 281 flights
- 10 AM: 87.2% on time from 128 flights
- 11 AM: 79.8% on time from 323 flights
- 12 PM: 75.2% on time from 240 flights
- 1 PM: 75.5% on time from 428 flights
- 2 PM: 76.8% on time from 255 flights
- 3 PM: 70.7% on time from 223 flights
- 4 PM: 73.1% on time from 391 flights
- 5 PM: 71.7% on time from 292 flights
- 6 PM: 68.2% on time from 368 flights
- 7 PM: 71.0% on time from 266 flights
- 8 PM: 74.2% on time from 463 flights
- 9 PM: 69.3% on time from 352 flights
- 10 PM: 68.2% on time from 354 flights
- 11 PM: too few flights to score
Why HOU → LAS 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 HOU → LAS. Only delays of 15 minutes or more are attributed. What the five causes mean
Late-arriving aircraft is the largest cause on HOU → LAS, at 45.8%: flights here mostly leave late because the plane came in late, and the day shows it: 5–9 AM departures arrived on time 94.1% of the time and 9 PM–5 AM departures 68.8%.
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 | 6,278 | 80.2% | 0.65% | -5 min | 5.3% |
Weekly and seasonal patterns
By day of week
Saturday is historically the most reliable day and Thursday the least, a gap of 7.1 percentage points.
By month
- Jan: 82.0%
- Feb: 81.3%
- Mar: 80.2%
- Apr: 79.0%
- May: 72.4%
- Jun: 73.3%
- Jul: 74.4%
- Aug: 84.1%
- Sep: 83.8%
- Oct: 80.8%
- Nov: 89.2%
- Dec: 84.4%
May is historically the weakest month and November the strongest, a spread of 16.8 percentage points.
Reliability over time
July 2023 – July 2026
- July 2023: 72.6% from 181 flights
- August 2023: 79.5% from 167 flights
- September 2023: 80.0% from 162 flights
- October 2023: 84.4% from 168 flights
- November 2023: 93.0% from 172 flights
- December 2023: 79.0% from 181 flights
- January 2024: 74.5% from 153 flights
- February 2024: 76.3% from 137 flights
- March 2024: 76.3% from 160 flights
- April 2024: 82.4% from 159 flights
- May 2024: 74.4% from 165 flights
- June 2024: 71.1% from 180 flights
- July 2024: 63.0% from 187 flights
- August 2024: 85.6% from 175 flights
- September 2024: 88.3% from 155 flights
- October 2024: 90.2% from 183 flights
- November 2024: 89.4% from 180 flights
- December 2024: 83.9% from 174 flights
- January 2025: 80.1% from 164 flights
- February 2025: 82.9% from 147 flights
- March 2025: 84.3% from 172 flights
- April 2025: 79.8% from 178 flights
- May 2025: 75.4% from 184 flights
- June 2025: 74.2% from 184 flights
- July 2025: 82.0% from 189 flights
- August 2025: 87.0% from 162 flights
- September 2025: 83.2% from 155 flights
- October 2025: 68.8% from 192 flights
- November 2025: 85.2% from 183 flights
- December 2025: 90.2% from 183 flights
- January 2026: 90.9% from 165 flights
- February 2026: 84.0% from 162 flights
- March 2026: 79.9% from 174 flights
- April 2026: 75.0% from 164 flights
- May 2026: 67.1% from 161 flights
- June 2026: 74.8% from 155 flights
- July 2026: 80.0% from 165 flights
Over the most recent 12 months (2025-08 to 2026-07), on-time arrivals averaged 80.5% against 82.9% in the 12 months before — declining by 2.4 percentage points.
Data and methodology
Calculated by FlyerIntel from 6,278 HOU → LAS 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