No delays reported for UA 1559 (SNA→EWR, LGA→ORD) as of 6:47 PM ET. It arrived on time 66.2% of the time in June-August 2026. When it was late, the average delay was 1h 38m. 7.6% of flights were cancelled. Right now there are no reported delays at SNA, EWR, LGA, ORD.
May not fly today
Leg 1 of 2 (SNA → EWR): Should be in the air from SNA, scheduled to land at EWR at 8:56 PM local time. This flight number flew about 5 days a week in June-August 2026, so it may not operate today.
Cancellation risk: Medium 7.6% 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.
What to do now
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Route and schedule
| Leg | Scheduled | On time |
|---|---|---|
| SNA → EWR Santa Ana, CA to Newark, NJ | 12:29 PM → 8:56 PM | 69% |
| LGA → ORD New York, NY to Chicago, IL | 9:27 PM → 10:59 PM | 56% |
Local times. Schedules change; check your booking.
How reliable is UA 1559?
| Arrived on time (within 15 min) | 66.2% |
| Average delay when late | 98 min |
| Cancelled | 7.6% |
| Diverted | 5.4% |
| Flights tracked | 92 |
Best and worst days to fly UA 1559
UA 1559 was most reliable on Tuesdays (83% on time) and least reliable on Sundays (50%).
| Monday | |
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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 SNA → EWR
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 1559 delayed today?
Right now there are no reported delays at SNA, EWR, LGA, ORD. Checked 6:47 PM ET. For this flight's gate and exact status, check the United app.
Is UA 1559 usually on time?
UA 1559 arrived within 15 minutes of schedule 66.2% of the time in June-August 2026, with an average delay of 98 minutes when late.
How often is UA 1559 cancelled?
7.6% of UA 1559 flights were cancelled in June-August 2026.