About 1 in 7 UA 4344 flights from Houston arrived 15+ minutes late, diverted or cancelled over the past year (15%); 1.1% were cancelled. The typical flight landed 14 minutes early.
UA 4344: IAH → HRL
Scheduled to leave Houston at 2:40 p.m. local time, operated by CommutAir as C5 4344. Over the past year it arrived on time 85% of the time (264 flights), in line with other UA flights on the route at that hour (86%). Last seen in the data Aug 31, 2026.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 39 | 85% |
| Tuesday | 39 | 90% |
| Wednesday | 37 | 89% |
| Thursday | 37 | 89% |
| Friday | 38 | 79% |
| Saturday | 38 | 79% |
| Sunday | 36 | 83% |
Why it was late
All flights IAH → HRL · Connecting off UA 4344? Check the risk
Questions
How often is UA 4344 from IAH to HRL late?
United Airlines 4344 from Houston, TX to Harlingen/San Benito, TX arrived 15 or more minutes late, was diverted or was cancelled on 15% of 264 scheduled flights between September 2025 and August 2026. 1.1% were cancelled.
Flight numbers change. Figures cover flights with this airline, number and route only. "Likely range" is the 95% interval for the true on-time rate given the number of flights. This is history, not live status: check United Airlines for today's flight. Method.