About 1 in 4 UA 406 flights from San Francisco arrived 15+ minutes late, diverted or cancelled over the past year (24%); 0.6% were cancelled. The typical flight landed 5 minutes early.
UA 406: SFO → LAS
Scheduled to leave San Francisco at 9:15 p.m. local time. Over the past year it arrived on time 76% of the time (340 flights), in line with other UA flights on the route at that hour (74%). Last seen in the data Aug 31, 2026.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 51 | 80% |
| Tuesday | 49 | 86% |
| Wednesday | 45 | 78% |
| Thursday | 49 | 63% |
| Friday | 47 | 72% |
| Saturday | 49 | 86% |
| Sunday | 50 | 66% |
Why it was late
All flights SFO → LAS · Connecting off UA 406? Check the risk
UA 406: LAS → EWR
Scheduled to leave Las Vegas at 11:45 p.m. local time. Over the past year it arrived on time 81% of the time (319 flights), in line with other UA flights on the route at that hour (81%). Last seen in the data Aug 31, 2026.
Usually United Airlines's last flight of the day from Las Vegas to Newark (100% of days). United Airlines's last LAS–EWR flight was cancelled 2.5% of the time, against 1.5% for its earlier ones. If it's cancelled, the next United Airlines flight is usually around 7:00 a.m. the next morning.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 53 | 83% |
| Tuesday | 48 | 88% |
| Wednesday | 47 | 72% |
| Thursday | 46 | 76% |
| Friday | 45 | 84% |
| Saturday | 39 | 82% |
| Sunday | 41 | 78% |
Why it was late
All flights LAS → EWR · Connecting off UA 406? Check the risk
Questions
How often is UA 406 from SFO to LAS late?
United Airlines 406 from San Francisco, CA to Las Vegas, NV arrived 15 or more minutes late, was diverted or was cancelled on 24% of 340 scheduled flights between September 2025 and August 2026. 0.6% were cancelled.
How often is UA 406 from LAS to EWR late?
United Airlines 406 from Las Vegas, NV to Newark, NJ arrived 15 or more minutes late, was diverted or was cancelled on 19% of 319 scheduled flights between September 2025 and August 2026. 2.8% 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.