Route
LAS → IAH
Harry Reid International Airport George Bush Intercontinental Airport
How punctual is this route?
- On-time arrivals
- 84.2%
- Less than 15 minutes late
- Cancelled
- 0.9%
- Of scheduled flights
- Average delay when late
- 83 min
- Flights arriving 15+ minutes late
- Flights tracked
- 3,411
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 38%
- Late-arriving aircraft 35%
- Air traffic control & airport 24%
- Extreme weather 2%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 85.5% | 255 |
| October 2025 | 88.2% | 292 |
| November 2025 | 81.4% | 312 |
| December 2025 | 91.6% | 309 |
| January 2026 | 90.3% | 282 |
| February 2026 | 90.3% | 292 |
| March 2026 | 77.7% | 323 |
| April 2026 | 82.0% | 293 |
| May 2026 | 82.0% | 264 |
| June 2026 | 80.1% | 261 |
| July 2026 | 80.2% | 264 |
| August 2026 | 80.5% | 264 |
Source: U.S. DOT Bureau of Transportation Statistics on-time data, September 2025 – August 2026. Covers flights operated by reporting U.S. carriers. About our data
Airlines on this route
| Airline | Flights | On time | Cancelled | Avg. delay when late |
|---|---|---|---|---|
| United Airlines | 2,596 | 85.8% | 0.3% | 79 min |
| Frontier Airlines | 409 | 78.0% | 2.0% | 69 min |
| NK | 406 | 79.9% | 3.0% | 116 min |
Delay odds by flight
How often each flight number arrived 15 or more minutes late over the last year.
-
UA1711
10% late · 266 flights
-
UA1181
10% late · 262 flights
-
UA2608
5% late · 262 flights
-
UA2492
16% late · 241 flights
-
F91490
15% late · 229 flights
-
UA2741
28% late · 176 flights
-
F91966
30% late · 174 flights
-
UA2017
6% late · 144 flights
-
UA305
18% late · 142 flights
-
UA2449
22% late · 112 flights
-
NK1255
28% late · 96 flights
-
UA1810
21% late · 76 flights
-
UA1652
14% late · 70 flights
-
NK1983
7% late · 58 flights
-
NK1808
23% late · 56 flights
-
UA2009
13% late · 53 flights
-
UA1055
38% late · 52 flights
-
UA2840
20% late · 46 flights
-
UA1885
5% late · 37 flights
-
UA1893
8% late · 37 flights
-
UA1915
8% late · 37 flights
-
UA1957
16% late · 37 flights
-
UA650
31% late · 37 flights
-
UA2753
6% late · 35 flights
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