| Date | From | To | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Aug 09 | IAD | CVG | 17:50 | 19:08 |
En-Route
|
Track > |
| Aug 07 | IAD | CVG | 17:48 | 19:08 |
En-Route
|
Track > |
| Jul 30 | IAD | CVG | 17:25 | 19:08 |
Scheduled
|
Track > |
| Jul 29 | IAD | CVG | 17:44 | 18:45 |
Landed
|
Track > |
| Jul 28 | IAD | CVG | 17:25 | 19:08 |
Cancelled
|
Track > |
| Claim > | ||||||
| Jul 24 | IAD | CVG | 17:37 | 18:41 |
Landed
|
Track > |
| Jul 23 | IAD | CVG | 17:50 | 18:58 |
Landed
|
Track > |
| Jul 22 | IAD | CVG | 19:10 | 20:19 |
Delayed
|
Track > |
| Jul 21 | IAD | CVG | 17:25 | 19:08 |
Cancelled
|
Track > |
| Jul 17 | IAD | CVG | 17:42 | 18:54 |
Landed
|
Track > |
United Airlines Flight UA4521 connects Washington, United States to Cincinnati, United States, taking off from Washington Dulles International Airport IAD and landing at Cincinnati Northern Kentucky International Airport CVG.
How long is the UA4521 flight from Washington to Cincinnati?
The average flight time from Washington to Cincinnati is 1 hour and 6 minutes. The flight distance is 623 km / 387 miles and the average flight speed is 462 km/h / 287 mph.
What is the On-Time Performance (OTP) of United Airlines Flight UA4521 Washington to Cincinnati?
The Airportia On-Time Performance Rating for United Airlines Flight UA4521 is 4.9/5 stars. This metric is calculated using data from the past 10 flights.
Which terminal is the flight UA4521 arriving at?
Flight UA4521 arrives at Cincinnati Northern Kentucky International Airport (CVG) Terminal 3.
When was the latest UA4521 flight?
The latest flight took off on Sunday, August 9th, 2026 with the flight status being En-Route on 19:08.
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, 10% of all UA4521 flights are delayed. The average delay is 71 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.
Other flights departing from Washington IAD: G74521, G74588, YV4059, YX3538
Other flights arriving at Cincinnati CVG: K4273, G74521, SY219, G74445
All flights connecting Washington IAD to Cincinnati CVG.