| Date | From | To | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| May 24 | IAD | BUF | 13:07 | 13:56 |
Landed
|
Track > |
United Airlines Flight UA4021 connects Washington, United States to Buffalo, United States, taking off from Washington Dulles International Airport IAD and landing at Buffalo Niagara International Airport BUF.
How long is the UA4021 flight from Washington to Buffalo?
The average flight time from Washington to Buffalo is 49 minutes. The flight distance is 457 km / 284 miles and the average flight speed is 559 km/h / 347 mph.
What is the On-Time Performance (OTP) of United Airlines Flight UA4021 Washington to Buffalo?
The Airportia On-Time Performance Rating for United Airlines Flight UA4021 is 5/5 stars. This metric is calculated using data from the past 10 flights.
When was the latest UA4021 flight?
The latest flight took off on Sunday, May 24th, 2026 with the flight status being Landed on 13:56.
How else can the flight UA4021 be referenced as?
This United Airlines flight can also be referenced as UAL4021, UA 4021, UAL 4021.
How often is flight UA4021 delayed?
On average, 0% of all UA4021 flights are delayed. The average delay is 0 minutes.
Can I get compensation for my delayed or cancelled UA4021 flight or baggage issues?
If your UA4021 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 UA4021 Flight Tracker above for more details.
Other flights departing from Washington IAD: UA3502, UA3528, 9X335, UA4864
Other flights arriving at Buffalo BUF: B62402, DL5362, AA6041, DL5296
All flights connecting Washington IAD to Buffalo BUF.