Which airline is most reliable for CMH (Columbus) to IAH (Houston)?

The most reliable airline on the CMH to IAH route is United Airlines, with an on-time arrival rate of 77%.

How often are flights delayed from CMH to IAH?

About 24% of flights from CMH to IAH experience delays. 76% arrive on time.

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

When flights from CMH to IAH are delayed, the average delay is approximately 73 minutes.

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

With 76% of CMH to IAH flights arriving on time and an average delay of 73 minutes when late, a connection under 60 minutes at IAH is risky. We recommend at least 75-90 minutes for domestic connections after this route.

CMH → IAH

CMH (Columbus) to IAH (Houston)

CMH (Columbus) to IAH (Houston) flights arrive on time 76% of the time. The most reliable airline on this route is United Airlines at 77%. The average delay is 73 minutes. Delays on this route are most often caused by the airline (crew, maintenance, or boarding).

Source: Bureau of Transportation Statistics. Updated October 2026.

CMH → IAH on-time performance by month

JanFebMarAprMayJunJulAugSepOctNovDec

Worse

Better

This route is on time most of the time. About 76% of flights arrive on schedule.

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

Accurate?

United Airlines is significantly more reliable on this route at 77% on time vs SkyWest Airlines at 56%.

Airline Comparison

United Airlines leads at 77% on time; SkyWest Airlines trails at 56%.

Accurate?

Good to know

Departing from CMH

81% on time

Expect ~17 min sitting on the taxiway after your gate pushes back. CMH has long runway queues.

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

More about CMH →

Arriving at IAH

79% on time

When flights into IAH are late, the average delay is 76 minutes. Build buffer if you have ground plans.

If connecting at IAH: TSA is ~5 min right now. Allow at least 60 minutes for a domestic connection.

More about IAH →Connection times at IAH →

Flight cancelled or delayed?

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Flying out of CMH? We'll brief you.

Delays, TSA, weather, gates — we'll let you know if something matters.

CMH Airport IAH Airport

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