About 1 in 3 UA 1559 flights from Santa Ana arrived 15+ minutes late, diverted or cancelled over the past year (39%); 1.8% were cancelled. The typical flight landed 1 minutes early.
UA 1559: SNA → EWR
Scheduled to leave Santa Ana at 12:29 p.m. local time. Over the past year it arrived on time 61% of the time (343 flights), in line with other UA flights on the route at that hour (61%). Last seen in the data Aug 10, 2026.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 50 | 66% |
| Tuesday | 49 | 63% |
| Wednesday | 49 | 69% |
| Thursday | 48 | 56% |
| Friday | 49 | 65% |
| Saturday | 49 | 59% |
| Sunday | 49 | 49% |
Why it was late
All flights SNA → EWR · Connecting off UA 1559? Check the risk
Questions
How often is UA 1559 from SNA to EWR late?
United Airlines 1559 from Santa Ana, CA to Newark, NJ arrived 15 or more minutes late, was diverted or was cancelled on 39% of 343 scheduled flights between September 2025 and August 2026. 1.8% 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.