Which airline is most reliable for IAH (Houston) to LAX (Los Angeles)?

The most reliable airline on the IAH to LAX route is Delta Air Lines, with an on-time arrival rate of 88%.

How often are flights delayed from IAH to LAX?

About 18% of flights from IAH to LAX experience delays. 82% arrive on time.

What's the average delay on IAH to LAX flights?

When flights from IAH to LAX are delayed, the average delay is approximately 68 minutes.

Is a short connection safe after a IAH to LAX flight?

With 82% of IAH to LAX flights arriving on time and an average delay of 68 minutes when late, a connection under 60 minutes at LAX is risky. We recommend at least 75-90 minutes for domestic connections after this route.

IAH → LAX

IAH (Houston) to LAX (Los Angeles)

IAH (Houston) to LAX (Los Angeles) flights arrive on time 82% of the time. The most reliable airline on this route is Delta Air Lines at 88%. The average delay is 68 minutes. Delays on this route are most often caused by the airline (crew, maintenance, or boarding).

Source: Bureau of Transportation Statistics. Updated April 2026.

IAH → LAX on-time performance by month

JanFebMarAprMayJunJulAugSepOctNovDec

Worse

Better

This route is on time most of the time. About 82% of flights arrive on schedule.

Delays on this route are most often caused by the airline (crew, maintenance, or boarding).

Accurate?

Delta Air Lines is significantly more reliable on this route at 88% on time vs Frontier Airlines at 70%.

Airline Comparison

Delta Air Lines leads at 88% on time; Frontier Airlines trails at 70%.

Accurate?

Good to know

Departing from IAH

80% on time

Expect ~18 min sitting on the taxiway after your gate pushes back. IAH has long runway queues.

TSA is currently ~9 min. Best time: 4 AM (about 5 min).

More about IAH →

Arriving at LAX

82% on time

When flights into LAX are late, the average delay is 68 minutes. Build buffer if you have ground plans.

If connecting at LAX: TSA is ~20 min right now. Allow at least 60 minutes for a domestic connection.

More about LAX →Connection times at LAX →

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IAH Airport LAX Airport

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Data last updated April 2026. Source: Bureau of Transportation Statistics.