UA4521 Flight Status United Airlines: Buffalo to Washington (UAL4521)
UA 4521 Buffalo to Washington Flight Status
Not scheduled today. Latest flight: July 27th, 2026 ; recent history is in the table below.
UA 4521 Flight Status & Schedule United Airlines Buffalo to Washington
| Date | From | To | Departure | Arrival | Status | Details |
|---|---|---|---|---|---|---|
| Jul 27 | BUF | IAD | 15:07 | 15:58 | Landed | Track > |
| Jul 20 | BUF | IAD | 15:00 | 15:50 | Landed | Track > |
| Jul 13 | BUF | IAD | 15:03 | 15:47 | Landed | Track > |
| Jul 06 | BUF | IAD | 15:12 | 16:13 | Landed | Track > |
| Jun 29 | BUF | IAD | 15:06 | 15:59 | Landed | Track > |
United Airlines flight UA 4521 links Buffalo and Washington, 457 km (284 mi) apart. The timetable allows 1 h 22 min, but the flight usually takes about 50 min, so it often makes up time. It is not flying today; the last flight, on 27 July 2026, landed on time.
About UA 4521
- Distance
- 457 km (284 mi)
- Typical flight time
- 50 min
- On time
- 5 of the last 5
- Usually departs from
- Gate 12
UA 4521 FAQ
- How long is the UA4521 flight?
- The timetable allows 1 h 22 min. Buffalo to Washington is 457 km (284 mi).
- How often is UA4521 late?
- None of the last 5 flights arrived 15 or more minutes late.
- Which terminal does UA4521 use?
- It usually leaves from gate 12 at Buffalo Niagara International Airport (BUF). Check the flight card above for today's terminal and gate.
- What other flight numbers does UA4521 have?
- Also listed as UAL4521 (United Airlines' ICAO code) and UA 4521.
UA4521 and Buffalo BUF to Washington IAD Flights
Flight UA4521 is code-shared by 2 airlines using the flight numbers LH7751, SN8961
Other flights departing from Buffalo BUF: AA6041, WN4734, DL3642, WN8504
Other flights arriving at Washington IAD: UA4387, UA4845
All flights connecting Buffalo BUF to Washington IAD.