About 1 in 6 UA 4243 flights from Gulfport arrived 15+ minutes late, diverted or cancelled over the past year (16%); 1.3% were cancelled. The typical flight landed 15 minutes early.
UA 4243: GPT → IAH
Scheduled to leave Gulfport at 2:00 p.m. local time, operated by CommutAir as C5 4243. Over the past year it arrived on time 84% of the time (321 flights), in line with other UA flights on the route at that hour (83%). Last seen in the data Aug 31, 2026.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 53 | 81% |
| Tuesday | 31 | 84% |
| Wednesday | 44 | 84% |
| Thursday | 51 | 82% |
| Friday | 51 | 90% |
| Saturday | 40 | 85% |
| Sunday | 51 | 80% |
Why it was late
All flights GPT → IAH · Connecting off UA 4243? Check the risk
Questions
How often is UA 4243 from GPT to IAH late?
United Airlines 4243 from Gulfport/Biloxi, MS to Houston, TX arrived 15 or more minutes late, was diverted or was cancelled on 16% of 321 scheduled flights between September 2025 and August 2026. 1.3% 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.