Tulsa to Houston

What the Data Says About TUL to IAH

The Tulsa to Houston corridor (TUL → IAH) covers roughly 429 miles and is served by 18 carriers, based on Bureau of Transportation Statistics reporting. Across 5,222 flights in the dataset, this route posts a 87.5% on-time rate with an average delay of 92.5 minutes when flights run late. Over the most recent 24 months of BTS data, 1,755 flights were recorded on this pairing — 21 cancelled (1.2%) and 4 diverted (0.2%). Those baseline metrics tell you what to expect before you book.

Having 18 carriers on the route matters: more carriers generally means more daily schedule options, competitive pricing, and redundancy when flights are cancelled. With 5,222 total flights analyzed, the 87.5% on-time figure is statistically meaningful rather than a small-sample fluke. The 92.5-minute average delay applies only to flights that actually ran late, so it is not the average wait across all departures — the majority of flights on this route depart on time under the BTS definition of a delay (15+ minutes past schedule).

Looking at recent months, Sep 2025 posted the best performance on this corridor at 91% on-time, while Jun 2025 came in at 77% on-time — a 14-point gap between best and worst recent month. For travelers evaluating the TUL to IAH route, the combination of a 87.5% on-time rate, 92.5-minute average delay, 1.2% recent cancellation rate, and 18 available carriers is the concrete summary of what BTS data shows about reliability on this pairing.