No delays reported for UA 1543 (EWR → SJU) as of 6:47 PM ET. It arrived on time 66.7% of the time in June-August 2026. When it was late, the average delay was 1h 40m. 2.2% of flights were cancelled. Right now there are no reported delays at EWR, SJU.
Looks on time
Next leg EWR → SJU, scheduled 7:45 PM local time. No delays at EWR right now.
Cancellation risk: Low 2.2% of its flights were cancelled in June-August 2026.
Estimate from the schedule, live position and airport conditions, if this flight operates today. Check United for official times.
Before you fly
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Route and schedule
| Leg | Scheduled | On time |
|---|---|---|
| EWR → SJU Newark, NJ to San Juan, PR | 7:45 PM → 11:50 PM | 67% |
Local times. Schedules change; check your booking.
How reliable is UA 1543?
| Arrived on time (within 15 min) | 66.7% |
| Average delay when late | 100 min |
| Cancelled | 2.2% |
| Diverted | 0% |
| Flights tracked | 92 |
Best and worst days to fly UA 1543
UA 1543 was most reliable on Tuesdays (75% on time) and least reliable on Sundays (54%).
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Why it runs late
| Late-arriving plane | |
| Airline (crew, maintenance) | |
| Air traffic system | |
| Extreme weather |
Share of delay minutes by cause, as reported by United to the Department of Transportation.
Other flights EWR → SJU
All flights on this route, ranked
Live status at its airports
We show airport-wide airport status, not this flight's gate or live position. For that, check the United app.
United delays and what you're owed · Airline phone numbers
About this data
On-time history: U.S. Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, June-August 2026. Live conditions: live airport status. "On time" means arriving within 15 minutes of schedule.
Common questions
Is UA 1543 delayed today?
Right now there are no reported delays at EWR, SJU. Checked 6:47 PM ET. For this flight's gate and exact status, check the United app.
Is UA 1543 usually on time?
UA 1543 arrived within 15 minutes of schedule 66.7% of the time in June-August 2026, with an average delay of 100 minutes when late.
How often is UA 1543 cancelled?
2.2% of UA 1543 flights were cancelled in June-August 2026.