IAH to OKC flight delays
Houston, TX (IAH) Oklahoma City, OK (OKC) · 395 miles
1,399 flights · January 2025 – August 2026 · US Bureau of Transportation Statistics
79.35%
Arrived on time
Within 15 minutes of schedule
1.14%
Cancelled
Share of scheduled flights
83 min
When late, late by
Average across delayed arrivals
18 min
Delay per flight
Averaged over every flight flown
What the record says about this route
The shape of the lateness matters here. Flights on this route are not late often, but when they are late they are late by about 83 minutes — long enough to lose a connection or an evening. The on-time percentage looks reassuring and understates the consequence of being on the wrong flight.
The two directions do not behave alike. OKC to IAH arrives on time 5 points more often than the outbound. Delay accumulates through the flying day, so whichever direction is scheduled later tends to carry the worse record — which is an argument for booking the morning departure if the choice exists.
The 2 airlines here are separated by under 4 points — close enough to call a tie. Choose on price and departure time.
The Houston to Oklahoma City route sits close to the middle of the record — neither notably punctual nor notably late.
Which airline should you fly on this route?
Over January 2025 – August 2026, United Airlines arrived on time most often on IAH to OKC. SkyWest Airlines was late most often. Flights ran closest to schedule in October and worst in June.
Every airline on IAH to OKC
Ranked by how many flights each one operated. A carrier with fewer than 100 flights in the period is listed but not graded.
| Airline | Flights | On time | Cancelled | Avg delay | Grade |
|---|---|---|---|---|---|
| SkyWest Airlines | 1,092 | 78.55% | 1.1% | 87 min | C |
| United Airlines | 307 | 82.18% | 1.3% | 67 min | B |
Month by month
Share of flights that arrived within 15 minutes of schedule, by month flown.
The return leg
OKC to IAH Oklahoma City back to Houston 84.34% on time BOther routes from Houston
Common questions
Are flights from Houston to Oklahoma City usually delayed?
79.35% of flights on the IAH to OKC route arrived within 15 minutes of schedule, so roughly 2 in every ten arrived late. That is about the same as the average route in this record.
Which airline is most on time from Houston to Oklahoma City?
United Airlines, at 82.18% on time across 307 flights. The least punctual on the route was SkyWest Airlines at 78.55%.
How often are IAH to OKC flights cancelled?
1.14% of scheduled flights did not operate — about 11 in every thousand. That is in the normal range.
What is the best month to fly Houston to Oklahoma City?
October, when 87.6% of flights arrived on time. The worst was June at 70%.
When IAH to OKC flights are late, how late are they?
About 83 minutes on average across the flights that arrived more than 15 minutes behind schedule.
What these figures do and do not tell you
Everything on this page is counted from the flights that actually operated on IAH to OKC during January 2025 – August 2026, as reported by the airlines to the US Bureau of Transportation Statistics. "On time" is the federal definition: arriving at the gate within 15 minutes of the scheduled time.
A route's record is a description of the past, not a forecast. Weather, air traffic control and the aircraft's earlier flights that day drive most delays, and none of them are predictable from a historical rate. What the record does tell you is whether this route runs late more often than others, and which carrier on it has the better history — which is the part you can actually act on when you book.
Cancellations are counted separately from delays because they are a different problem for a traveller: a late flight still gets you there. How the grade is calculated →