UA4521 Flight Status United Airlines: Washington to Buffalo (UAL4521)
UA 4521 Washington to Buffalo Flight Status
Not scheduled today. Latest flight: May 30th, 2026 ; recent history is in the table below.
UA 4521 Flight Status & Schedule United Airlines Washington to Buffalo
| Date | From | To | Departure | Arrival | Status | Details |
|---|---|---|---|---|---|---|
| May 30 | IAD | BUF | 17:49 | 18:41 | Landed | Track > |
| May 23 | IAD | BUF | 18:38 | 19:30 | Landed Late | Track > |
United Airlines flight UA 4521 links Washington and Buffalo, 457 km (284 mi) apart. The timetable allows 1 h 32 min; there is not enough recent history yet to say how long it usually takes. It is not flying today; the last flight, on 30 May 2026, landed on time.
About UA 4521
- Distance
- 457 km (284 mi)
- Scheduled flight time
- 1 h 32 min
UA 4521 FAQ
- How long is the UA4521 flight?
- The timetable allows 1 h 32 min. Washington to Buffalo is 457 km (284 mi).
- What other flight numbers does UA4521 have?
- Also listed as UAL4521 (United Airlines' ICAO code) and UA 4521.
UA4521 and Washington IAD to Buffalo BUF Flights
Flight UA4521 is code-shared by 4 airlines using the flight numbers AV2042, CM2142, LH7566, SN8933
Other flights departing from Washington IAD: UA4333, UA4060, WN8230
Other flights arriving at Buffalo BUF: WN3090, WN2238, OO3969, WN3972
All flights connecting Washington IAD to Buffalo BUF.