| Date | From | To | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Oct 17 | BOS | IAD | 14:15 | 15:57 |
Delayed
|
Track > |
| Oct 16 | BOS | IAD | 14:31 | 15:48 |
Landed
|
Track > |
| Oct 15 | BOS | IAD | 14:41 | 16:00 |
Unknown
|
Track > |
| Oct 14 | BOS | IAD | 14:28 | 15:46 |
Landed
|
Track > |
| Oct 13 | BOS | IAD | 14:31 | 15:41 |
Landed
|
Track > |
| Oct 12 | BOS | IAD | 15:08 | 16:30 |
Landed Late
|
Track > |
| Oct 11 | BOS | IAD | 14:19 | 15:36 |
Landed
|
Track > |
| Oct 10 | BOS | IAD | 14:30 | 15:47 |
Landed
|
Track > |
| Oct 09 | BOS | IAD | 14:25 | 15:45 |
Landed
|
Track > |
| Oct 08 | BOS | IAD | 14:40 | 16:05 |
Landed
|
Track > |
United Airlines Flight UA721 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 UA721 flight from Boston to Washington?
The average flight time from Boston to Washington is 1 hour and 18 minutes. The flight distance is 663 km / 412 miles and the average flight speed is 498 km/h / 309 mph.
How many UA721 flights are operated per week?
7 flights per week. The flight UA721 is operated on Monday, Tuesday, Wednesday, Thursday, Friday, Saturday and Sunday.
What is the On-Time Performance (OTP) of United Airlines Flight UA721 Boston to Washington?
The Airportia On-Time Performance Rating for United Airlines Flight UA721 is 4.9/5 stars. This metric is calculated using data from the past 10 flights.
When was the latest UA721 flight?
The latest flight took off on Saturday, October 17th, 2026 with the flight status being Scheduled on 15:57.
How else can the flight UA721 be referenced as?
This United Airlines flight can also be referenced as UAL721, UA0721, UA 721, UAL 721.
How often is flight UA721 delayed?
On average, 30% of all UA721 flights are delayed. The average delay is 15 minutes.
Can I get compensation for my delayed or cancelled UA721 flight or baggage issues?
If your UA721 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 UA721 Flight Tracker above for more details.
Flight UA721 is code-shared by 4 airlines using the flight numbers AV2038, LH7451, OS7888, SN8899
Other flights departing from Boston BOS: MQ4016, DL2391, B61555, 9K1857
Other flights arriving at Washington IAD: AV582, UA2435, UA1128, TA582
All flights connecting Boston BOS to Washington IAD.
