| Date | From | To | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Jun 25 | BOS | IAD | 09:46 | 10:56 |
Landed
|
Track > |
| Jun 24 | BOS | IAD | 09:45 | 10:54 |
Landed
|
Track > |
| Jun 23 | BOS | IAD | 09:43 | 10:50 |
Landed
|
Track > |
| Jun 22 | BOS | IAD | 09:44 | 11:05 |
Landed
|
Track > |
| Jun 21 | BOS | IAD | 09:45 | 10:53 |
Landed
|
Track > |
| Jun 20 | BOS | IAD | 09:57 | 11:05 |
Landed
|
Track > |
| Jun 19 | BOS | IAD | 09:38 | 10:49 |
Landed
|
Track > |
| Jun 18 | BOS | IAD | 09:38 | 10:50 |
Landed
|
Track > |
| Jun 17 | BOS | IAD | 09:45 | 11:00 |
Landed
|
Track > |
| Jun 16 | BOS | IAD | 09:40 | 10:51 |
Landed
|
Track > |
United Airlines Flight UA521 connects Boston, United States to Washington, United States, taking off from Boston Logan International Airport BOS and landing at Washington Dulles International Airport IAD.
How long is the UA521 flight from Boston to Washington?
The average flight time from Boston to Washington is 1 hour and 11 minutes. The flight distance is 663 km / 412 miles and the average flight speed is 561 km/h / 348 mph.
What is the On-Time Performance (OTP) of United Airlines Flight UA521 Boston to Washington?
The Airportia On-Time Performance Rating for United Airlines Flight UA521 is 5/5 stars. This metric is calculated using data from the past 10 flights.
When was the latest UA521 flight?
The latest flight took off on Wednesday, June 25th, 2025 with the flight status being Landed on 10:56.
How else can the flight UA521 be referenced as?
This United Airlines flight can also be referenced as UAL521, UA0521, UA 521, UAL 521.
How often is flight UA521 delayed?
On average, 0% of all UA521 flights are delayed. The average delay is 0 minutes.
Can I get compensation for my delayed or cancelled UA521 flight or baggage issues?
If your UA521 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 UA521 Flight Tracker above for more details.
Flight UA521 is code-shared by 3 airlines using the flight numbers AV2032, CM1092, NH7101
Other flights departing from Boston BOS: B6723, AC8689, G43040, G4216
Other flights arriving at Washington IAD: UA4178, UA3698, UA1786, UA3683
All flights connecting Boston BOS to Washington IAD.
