About 1 in 4 UA 1784 flights from Newark arrived 15+ minutes late, diverted or cancelled over the past year (28%); 5.5% were cancelled. The typical flight landed 12 minutes early.
UA 1784: EWR → IAD
Scheduled to leave Newark at 9:50 p.m. local time. Over the past year it arrived on time 72% of the time (238 flights), better than other UA flights on the route at that hour (68%). Last seen in the data Aug 31, 2026.
Usually United Airlines's last flight of the day from Newark to Washington (100% of days). United Airlines's last EWR–IAD flight was cancelled 4.1% of the time, against 2.7% for its earlier ones. If it's cancelled, the next United Airlines flight is usually around 6:00 a.m. the next morning.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 34 | 76% |
| Tuesday | 34 | 71% |
| Wednesday | 34 | 68% |
| Thursday | 34 | 65% |
| Friday | 34 | 79% |
| Saturday | 34 | 82% |
| Sunday | 34 | 62% |
Why it was late
All flights EWR → IAD · Connecting off UA 1784? Check the risk
UA 1784: LAS → EWR
Scheduled to leave Las Vegas at 9:56 a.m. local time. Over the past year it arrived on time 74% of the time (124 flights), worse than other UA flights on the route at that hour (77%). Last seen in the data Aug 31, 2026.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 18 | — |
| Tuesday | 17 | — |
| Wednesday | 17 | — |
| Thursday | 18 | — |
| Friday | 18 | — |
| Saturday | 18 | — |
| Sunday | 18 | — |
Why it was late
All flights LAS → EWR · Connecting off UA 1784? Check the risk
Questions
How often is UA 1784 from EWR to IAD late?
United Airlines 1784 from Newark, NJ to Washington, DC arrived 15 or more minutes late, was diverted or was cancelled on 28% of 238 scheduled flights between September 2025 and August 2026. 5.5% were cancelled.
How often is UA 1784 from LAS to EWR late?
United Airlines 1784 from Las Vegas, NV to Newark, NJ arrived 15 or more minutes late, was diverted or was cancelled on 26% of 124 scheduled flights between September 2025 and August 2026. 0.0% 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.