PlainFlights

Route · LAX → IAH · 2020–2025 BTS data

Los Angeles to Houston

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), LAX to IAH (Los Angeles to Houston) ranks #156 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

86.2%
On-time
+7.2 pts
vs US avg
76 min
Delay when late
28,102
Flights
#156 of 4927
Corpus placement

Cancelled

1.3%

Best Month

Sep 2024 94%

Worst Month

Jul 2024 74%

Distance

1,379 mi

Carriers

25

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Dec 2025 448 92 4 1 DL,F9,NK,UA,OO
Nov 2025 446 100 2 2 OO,UA,DL,F9,NK
Oct 2025 493 60 0 0 DL,OO,UA,F9,NK
Sep 2025 439 34 0 0 UA,OO,DL,NK,F9
Aug 2025 442 60 3 3 OO,F9,NK,UA,DL
Jul 2025 453 88 5 8 DL,NK,OO,UA,F9
Jun 2025 431 96 6 8 OO,UA,DL,F9,NK
May 2025 446 78 1 0 NK,OO,UA,DL,F9
Apr 2025 460 57 0 2 DL,F9,NK,OO,UA
Mar 2025 446 43 1 0 DL,OO,UA,NK,F9
Feb 2025 412 52 1 0 OO,UA,DL,F9,NK
Jan 2025 479 59 23 2 OO,UA,DL,F9,NK
Dec 2024 495 91 2 2 DL,F9,NK,OO,UA
Nov 2024 463 44 0 0 OO,UA,NK,DL
Oct 2024 475 37 1 0 UA,OO,DL,NK
Sep 2024 462 29 0 0 NK,OO,UA,DL
Aug 2024 484 83 4 2 DL,NK,OO,UA
Jul 2024 483 126 30 2 DL,NK,OO,UA
Jun 2024 473 93 3 5 DL,NK,OO,UA
May 2024 466 95 5 8 DL,NK,OO,UA
Apr 2024 436 40 0 0 DL,NK,OO,UA
Mar 2024 424 69 0 4 DL,NK,OO,UA
Feb 2024 371 34 0 0 DL,NK,OO,UA
Jan 2024 405 47 49 2 DL,NK,OO,UA

LAX–IAH seasonal on-time pattern

Best: September (90.6%) · weakest: July (80.7%)

80%85%90%95% JanFebMarAprMayJunJulAugSepOctNovDec 83.3%

Strongest calendar month

September

90.6% on-time · ~388 flights/mo

Busiest calendar month

October

~419 flights/mo avg

Weakest calendar month

July

80.7% on-time · ~413 flights/mo

Cancellation Rate

1.3%

140 of 10,832 flights

Diversion Rate

0.5%

51 of 10,832 flights

Explore origin & destination

On-time and delay data for the airports this route connects.

LAX - Los Angeles

Full on-time, delay-cause, and seasonal performance for Los Angeles, CA.

LAX on-time profile

IAH - Houston

Full on-time, delay-cause, and seasonal performance for Houston, TX.

IAH on-time profile

Compare the two airports

See LAX and IAH side by side on delays, cancellations, and reliability.

Compare LAX vs IAH

Origin-hub reliability standing

Among LAX's stronger departures

LAX → IAH posts a 86.2% on-time rate, landing in the ≥85% band with 40 of 80 BTS-tracked routes leaving Los Angeles. The same hub also shows 39 mid-band and 1 challenged departures · fleet-wide on-time rank #847 of 4927 (highest on-time = #1).

What the Data Says About LAX to IAH

Los Angeles to Houston (LAX to IAH) is one of the more dependable pairings in the BTS On-Time Performance dataset: a 86.2% on-time rate across 28,102 flights, with delays that do happen averaging 75.7 minutes. The corridor runs roughly 1,379 miles and is served by 25 carriers. Over the most recent 24 months, 140 of 10,832 flights were cancelled (1.3%) and 51 diverted (0.5%).

The monthly split is wide on this route: Sep 2024 posted the strongest performance at 94% on-time, while Jul 2024 came in at just 74% - a 20-point swing worth factoring into travel timing.

On the multi-year calendar, LAX–IAH peaks in September at 90.6% on-time while October carries the heaviest traffic (~419 flights per month) ; the softest month is July at 80.7%, a 9.9-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.

Frequently Asked Questions

Where does LAX to IAH rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, LAX to IAH ranks #156 of 4927 tracked domestic routes by total flights (most flights = #1). That ordinal matches our busiest-routes listing (total_flights DESC). See /methodology#corpus-placement for the exact sort basis.
How often are flights delayed from LAX to IAH? ▼
Flights from Los Angeles to Houston have a 86.2% on-time rate based on 28,102 flights. The average delay is 75.7 minutes. The best recent month was Sep 2024 with 94% on-time.
What is the cancellation rate for LAX to IAH? ▼
Over the last 24 months, 1.3% of flights on this route were cancelled (140 of 10,832 flights) and 0.5% were diverted.
How far is the flight from LAX to IAH? ▼
The flight distance from Los Angeles (LAX) to Houston (IAH) is approximately 1,379 miles. This route is served by 25 carriers.
When is the best time to fly from LAX to IAH? ▼
The best recent month for on-time performance was Sep 2024 (94% on-time). The worst was Jul 2024 (74% on-time). Consider booking during months with historically better performance.

Airports on this route

LAX Airport

Los Angeles
IAH Airport

Houston
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 LAX–IAH data

LAX–IAH runs 7.2 pts above the national 79% average; the remaining risk is month-to-month swing and carrier mix, not a weak headline rate.

  • Compare LAX and IAH airport profiles: delay causes and top routes differ even on the same corridor. LAX airport
  • If your dates flex, September (90.6% on-time) beats July (80.7%) on this corridor. Seasonal chart
  • 4 other routes post a similar 86.2% 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.

Data sourced from U.S. Department of Transportation Bureau of Transportation Statistics (BTS) On-Time Performance data. See our methodology for details. Retrieved and formatted by PlainFlights

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.