| Date | From | To | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Jul 18 | BOS | IAD | 17:17 | 15:57 |
Unknown
|
Track > |
| Jul 17 | BOS | IAD | 14:26 | 15:35 |
Landed
|
Track > |
| Jul 16 | BOS | IAD | 14:22 | 15:30 |
Landed
|
Track > |
| Jul 15 | BOS | IAD | 14:24 | 15:39 |
Landed
|
Track > |
| Jul 14 | BOS | IAD | 14:23 | 15:29 |
Landed
|
Track > |
| Jul 13 | BOS | IAD | 14:39 | 15:43 |
Landed
|
Track > |
| Jul 12 | BOS | IAD | 14:59 | 16:13 |
Landed Late
|
Track > |
| Jul 11 | BOS | IAD | 14:52 | 16:05 |
Landed
|
Track > |
| Jul 10 | BOS | IAD | 15:31 | 16:50 |
Delayed
|
Track > |
| Jul 09 | BOS | IAD | 17:01 | 15:57 |
Unknown
|
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 11 minutes. The flight distance is 663 km / 412 miles and the average flight speed is 529 km/h / 328 mph.
How many UA721 flights are operated per week?
6 flights per week. The flight UA721 is operated on Monday, Tuesday, Wednesday, Thursday, Friday and Saturday.
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, July 18th, 2026 with the flight status being Unknown 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 25 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: DL5626, AA3341, B6837, B6639
Other flights arriving at Washington IAD: BA217, AV582, UA4340, UA3597
All flights connecting Boston BOS to Washington IAD.
