How often are SLC to IAH flights on time?

Flights from Salt Lake City (SLC) to Houston (IAH) arrive on time 89% of the time across 14,304 flights of official data.

Which airline is most reliable on the SLC to IAH route?

United Airlines has the best on-time record on this route at 90% across 7,776 flights.

Route reliability

Flights from Salt Lake City to Houston arrive on time 89% of the time across 14,304 flights. Here’s how each airline really performs.

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On-time rate

14,304 flights

Airline	On-time	Flights
United Airlines	90%	7,776
Delta Air Lines	88%	6,528

On-time = arrived within 15 minutes of schedule, per BTS TranStats. Compare the reverse leg IAH → SLC.

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Score real SLC–IAH flights on reliability, weather, and connection safety — not just price.