No delays reported for UA 1821 (ORD → LGA) as of 6:47 PM ET. It arrived on time 54.2% of the time in June-August 2026. When it was late, the average delay was 1h 6m. 7.6% of flights were cancelled. Right now there are no reported delays at ORD, LGA.
Looks on time
Next leg ORD → LGA, scheduled 2:00 PM local time. No delays at ORD right now.
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.
Before you fly
Some links are affiliate links.
Route and schedule
| Leg | Scheduled | On time |
|---|---|---|
| ORD → LGA Chicago, IL to New York, NY | 2:00 PM → 5:22 PM | 54% |
Local times. Schedules change; check your booking.
How reliable is UA 1821?
| Arrived on time (within 15 min) | 54.2% |
| Average delay when late | 66 min |
| Cancelled | 7.6% |
| Diverted | 2.2% |
| Flights tracked | 92 |
Best and worst days to fly UA 1821
UA 1821 was most reliable on Tuesdays (73% on time) and least reliable on Sundays (31%).
| Monday | |
| Tuesday | |
| Wednesday | |
| Thursday | |
| Friday | |
| Saturday | |
| Sunday |
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 ORD → LGA
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 1821 delayed today?
Right now there are no reported delays at ORD, LGA. Checked 6:47 PM ET. For this flight's gate and exact status, check the United app.
Is UA 1821 usually on time?
UA 1821 arrived within 15 minutes of schedule 54.2% of the time in June-August 2026, with an average delay of 66 minutes when late.
How often is UA 1821 cancelled?
7.6% of UA 1821 flights were cancelled in June-August 2026.