About 1 in 7 UA 515 flights from Newark arrived 15+ minutes late, diverted or cancelled over the past year (15%); 1.4% were cancelled. The typical flight landed 13 minutes early.
UA 515: EWR → SAT
Scheduled to leave Newark at 12:20 p.m. local time. Over the past year it arrived on time 85% of the time (362 flights), in line with other UA flights on the route at that hour (86%). Last seen in the data Aug 31, 2026.
Usually United Airlines's last flight of the day from Newark to San Antonio (64% of days). United Airlines's last EWR–SAT flight was cancelled 1.7% of the time, against 0.9% for its earlier ones. If it's cancelled, the next United Airlines flight is usually around 9:29 a.m. the next morning.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 53 | 85% |
| Tuesday | 52 | 87% |
| Wednesday | 52 | 92% |
| Thursday | 52 | 87% |
| Friday | 52 | 85% |
| Saturday | 52 | 77% |
| Sunday | 49 | 86% |
Why it was late
All flights EWR → SAT · Connecting off UA 515? Check the risk
Questions
How often is UA 515 from EWR to SAT late?
United Airlines 515 from Newark, NJ to San Antonio, TX arrived 15 or more minutes late, was diverted or was cancelled on 15% of 362 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.