About 1 in 3 UA 4454 flights from St. Louis arrived 15+ minutes late, diverted or cancelled over the past year (29%); 1.4% were cancelled. The typical flight landed 6 minutes early.
UA 4454: STL → IAD
Scheduled to leave St. Louis at 12:15 p.m. local time, operated by GoJet as G7 4454. Over the past year it arrived on time 71% of the time (364 flights), in line with other UA flights on the route at that hour (74%). Last seen in the data Aug 31, 2026.
Usually United Airlines's last flight of the day from St. Louis to Washington (96% of days). United Airlines's last STL–IAD flight was cancelled 1.4% of the time, against 0.3% for its earlier ones. If it's cancelled, the next United Airlines flight is usually around 8:43 a.m. the next morning.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 53 | 70% |
| Tuesday | 51 | 78% |
| Wednesday | 52 | 73% |
| Thursday | 52 | 71% |
| Friday | 52 | 67% |
| Saturday | 52 | 69% |
| Sunday | 52 | 69% |
Why it was late
All flights STL → IAD · Connecting off UA 4454? Check the risk
Questions
How often is UA 4454 from STL to IAD late?
United Airlines 4454 from St. Louis, MO to Washington, DC arrived 15 or more minutes late, was diverted or was cancelled on 29% of 364 scheduled flights between September 2025 and August 2026. 1.4% 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.