Route · LAS → IAH · 2020–2025 BTS data
Las Vegas to Houston
According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), LAS to IAH (Las Vegas to Houston) ranks #285 of 4927 tracked domestic routes by total flights (most flights = #1).
Data updated 2026-06-13
- 82.2%
- On-time
- +3.2 pts
- vs US avg
- 73 min
- Delay when late
- 21,832
- Flights
- #285 of 4927
- Corpus placement
Cancelled
1.2%
Best Month
Dec 2025 92%
Worst Month
Jul 2024 69%
Distance
1,222 mi
Carriers
14
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 309 | 26 | 0 | 0 | F9,NK,UA |
| Nov 2025 | 312 | 58 | 0 | 0 | UA,F9,NK |
| Oct 2025 | 292 | 34 | 0 | 3 | UA,F9,NK |
| Sep 2025 | 255 | 37 | 0 | 0 | UA,NK,F9 |
| Aug 2025 | 285 | 60 | 4 | 1 | F9,NK,UA |
| Jul 2025 | 287 | 60 | 6 | 3 | NK,UA,F9 |
| Jun 2025 | 289 | 77 | 5 | 3 | UA,F9,NK |
| May 2025 | 315 | 63 | 5 | 0 | NK,UA,F9 |
| Apr 2025 | 317 | 40 | 0 | 1 | F9,NK,UA |
| Mar 2025 | 336 | 42 | 0 | 1 | UA,NK,F9 |
| Feb 2025 | 298 | 39 | 0 | 0 | UA,F9,NK |
| Jan 2025 | 312 | 38 | 13 | 1 | UA,F9,NK |
| Dec 2024 | 330 | 52 | 0 | 2 | F9,NK,UA |
| Nov 2024 | 365 | 41 | 0 | 0 | UA,NK,F9 |
| Oct 2024 | 387 | 42 | 0 | 2 | UA,NK,F9 |
| Sep 2024 | 331 | 57 | 1 | 0 | NK,UA,F9 |
| Aug 2024 | 321 | 75 | 1 | 0 | F9,NK,WN,UA |
| Jul 2024 | 363 | 111 | 26 | 5 | F9,NK,UA,WN |
| Jun 2024 | 359 | 86 | 4 | 1 | F9,NK,UA,WN |
| May 2024 | 379 | 91 | 7 | 4 | F9,NK,UA,WN |
| Apr 2024 | 364 | 53 | 1 | 2 | F9,NK,UA,WN |
| Mar 2024 | 388 | 89 | 1 | 3 | F9,NK,UA,WN |
| Feb 2024 | 306 | 32 | 1 | 0 | F9,NK,UA,WN |
| Jan 2024 | 332 | 63 | 19 | 2 | F9,NK,WN,UA |
LAS–IAH seasonal on-time pattern
Best: November (86.8%) · weakest: July (73.3%)
Strongest calendar month
November
86.8% on-time · ~318 flights/mo
Busiest calendar month
March
~332 flights/mo avg
Weakest calendar month
July
73.3% on-time · ~309 flights/mo
Cancellation Rate
1.2%
94 of 7,832 flights
Diversion Rate
0.4%
34 of 7,832 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
LAS - Las Vegas
Full on-time, delay-cause, and seasonal performance for Las Vegas, NV.
LAS on-time profileIAH - Houston
Full on-time, delay-cause, and seasonal performance for Houston, TX.
IAH on-time profileCompare the two airports
See LAS and IAH side by side on delays, cancellations, and reliability.
Compare LAS vs IAHOrigin-hub reliability standing
Mid-pack among LAS departures
From LAS, this corridor sits with 71 other 75–85% on-time routes out of 83 tracked departures, not the hub's reliability leaders (2 at ≥85%) and not the softest ( 10 below 75%). Destination: Houston · fleet on-time rank #2269 of 4927.
Similar routes
Other BTS-tracked routes with comparable performance or trip length to LAS–IAH.
Routes with a similar on-time rate
What the Data Says About LAS to IAH
Bureau of Transportation Statistics records show Las Vegas to Houston (LAS to IAH) running a 82.2% on-time rate over 21,832 tracked flights, on the stronger end of a typical domestic pairing. When flights do run late, the average delay is 72.6 minutes. The 1,222-mile corridor is served by 14 carriers, and over the last 24 months 1.2% of 7,832 flights were cancelled, 0.4% diverted.
The monthly split is wide on this route: Dec 2025 posted the strongest performance at 92% on-time, while Jul 2024 came in at just 69% - a 22-point swing worth factoring into travel timing.
On the multi-year calendar, LAS–IAH peaks in November at 86.8% on-time while March carries the heaviest traffic (~332 flights per month) ; the softest month is July at 73.3%, a 13.5-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.
Frequently Asked Questions
Where does LAS to IAH rank among US routes by traffic? ▼
How often are flights delayed from LAS to IAH? ▼
What is the cancellation rate for LAS to IAH? ▼
How far is the flight from LAS to IAH? ▼
When is the best time to fly from LAS to IAH? ▼
Airports on this route
Data source
Data Source: Bureau of Transportation Statistics (BTS), On-Time Performance Data. Statistics reflect cumulative performance across all available reporting periods.
Read our methodology - how this data is sourced, computed, and verified.
Using LAS–IAH data
LAS–IAH runs 3.2 pts above the national 79% average; the remaining risk is month-to-month swing and carrier mix, not a weak headline rate.
- Compare LAS and IAH airport profiles: delay causes and top routes differ even on the same corridor. LAS airport
- If your dates flex, November (86.8% on-time) beats July (73.3%) on this corridor. Seasonal chart
- 4 other routes post a similar 82.2% on-time rate; compare before you commit to this pairing. Similar routes
On-time rate reflects the BTS historical average across all reporting carriers on this origin–destination pair, not any single flight or booking recommendation.
Every figure on PlainFlights is rendered directly from BTS On-Time Performance data, no number is typed in by an editor. This page aggregates this specific route's on-time performance and monthly trend, live from the dataset. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.