About 1 in 7 UA 4347 flights from Houston arrived 15+ minutes late, diverted or cancelled over the past year (13%); 0.6% were cancelled. The typical flight landed 12 minutes early.
UA 4347: IAH → JAN
Scheduled to leave Houston at 9:45 a.m. local time, operated by CommutAir as C5 4347. Over the past year it arrived on time 87% of the time (337 flights), in line with other UA flights on the route at that hour (87%). Last seen in the data Aug 31, 2026.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 53 | 87% |
| Tuesday | 46 | 87% |
| Wednesday | 49 | 78% |
| Thursday | 51 | 96% |
| Friday | 52 | 88% |
| Saturday | 39 | 82% |
| Sunday | 47 | 87% |
Why it was late
All flights IAH → JAN · Connecting off UA 4347? Check the risk
Questions
How often is UA 4347 from IAH to JAN late?
United Airlines 4347 from Houston, TX to Jackson/Vicksburg, MS arrived 15 or more minutes late, was diverted or was cancelled on 13% of 337 scheduled flights between September 2025 and August 2026. 0.6% 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.