About 1 in 5 UA 2435 flights from Washington arrived 15+ minutes late, diverted or cancelled over the past year (20%); 1.4% were cancelled. The typical flight landed 7 minutes early.
UA 2435: IAD → SMF
Scheduled to leave Washington at 5:55 p.m. local time. Over the past year it arrived on time 80% of the time (349 flights), in line with other UA flights on the route at that hour (78%). Last seen in the data Aug 31, 2026.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 51 | 76% |
| Tuesday | 49 | 84% |
| Wednesday | 49 | 82% |
| Thursday | 50 | 82% |
| Friday | 50 | 80% |
| Saturday | 50 | 78% |
| Sunday | 50 | 76% |
Why it was late
All flights IAD → SMF · Connecting off UA 2435? Check the risk
UA 2435: MIA → IAD
Scheduled to leave Miami at 1:10 p.m. local time. Over the past year it arrived on time 87% of the time (328 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 | 47 | 94% |
| Tuesday | 47 | 89% |
| Wednesday | 47 | 94% |
| Thursday | 47 | 91% |
| Friday | 47 | 87% |
| Saturday | 47 | 83% |
| Sunday | 46 | 72% |
Why it was late
All flights MIA → IAD · Connecting off UA 2435? Check the risk
Questions
How often is UA 2435 from IAD to SMF late?
United Airlines 2435 from Washington, DC to Sacramento, CA arrived 15 or more minutes late, was diverted or was cancelled on 20% of 349 scheduled flights between September 2025 and August 2026. 1.4% were cancelled.
How often is UA 2435 from MIA to IAD late?
United Airlines 2435 from Miami, FL to Washington, DC arrived 15 or more minutes late, was diverted or was cancelled on 13% of 328 scheduled flights between September 2025 and August 2026. 0.3% 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.