| Date | From | To | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Jun 25 | EWR | BUF | 17:06 | 17:52 |
Landed Late
|
Track > |
| Jun 24 | EWR | BUF | 16:17 | 17:07 |
Landed
|
Track > |
| Jun 23 | EWR | BUF | 16:04 | 16:49 |
Landed
|
Track > |
| Jun 22 | EWR | BUF | 19:44 | 20:35 |
Delayed >3h
|
Track > |
| Claim > | ||||||
| Jun 21 | EWR | BUF | 16:29 | 17:19 |
Landed Late
|
Track > |
| Jun 20 | EWR | BUF | 17:28 | 18:23 |
Landed Late
|
Track > |
| Jun 19 | EWR | BUF | 16:00 | 17:28 |
Diverted
|
Track > |
| Claim > | ||||||
| Jun 18 | EWR | BUF | 16:25 | 17:21 |
Landed
|
Track > |
| Jun 17 | EWR | BUF | 16:10 | 16:58 |
Landed
|
Track > |
| Jun 16 | EWR | BUF | 16:19 | 17:11 |
Landed
|
Track > |
United Airlines Flight UA4521 connects New York, United States to Buffalo, United States, taking off from New York Newark Liberty International Airport EWR and landing at Buffalo Niagara International Airport BUF.
How long is the UA4521 flight from New York to Buffalo?
The average flight time from New York to Buffalo is 54 minutes. The flight distance is 453 km / 282 miles and the average flight speed is 519 km/h / 323 mph.
What is the On-Time Performance (OTP) of United Airlines Flight UA4521 New York to Buffalo?
The Airportia On-Time Performance Rating for United Airlines Flight UA4521 is 4.5/5 stars. This metric is calculated using data from the past 10 flights.
When was the latest UA4521 flight?
The latest flight took off on Wednesday, June 25th, 2025 with the flight status being Landed on 17:52.
How else can the flight UA4521 be referenced as?
This United Airlines flight can also be referenced as UAL4521, UA 4521, UAL 4521.
How often is flight UA4521 delayed?
On average, 40% of all UA4521 flights are delayed. The average delay is 72 minutes.
Can I get compensation for my delayed or cancelled UA4521 flight or baggage issues?
If your UA4521 flight was cancelled, delayed, or if you experienced baggage issues such as delayed, damaged, or lost bags, you may be entitled to compensation. Compensation amounts and eligibility depend on various regulations, including EC 261/2004, UK261, CA Montreal Convention, US GoodWill, BR-ANAC, SA-GACA and TK-SHY.
See our UA4521 Flight Tracker above for more details.
Flight UA4521 is code-shared by 2 airlines using the flight numbers LH8882, OS7753
Other flights departing from New York EWR: UA716, UA2033, UA1850, UA1808
Other flights arriving at Buffalo BUF: UA4579, UA2343, UA4413, AA9936
All flights connecting New York EWR to Buffalo BUF.
