| Date | From | To | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Aug 20 | BUF | IAD | 19:59 | 21:19 |
Delayed >1h
|
Track > |
| Aug 16 | BUF | IAD | 20:13 | 21:19 |
En-Route
|
Track > |
| Aug 14 | BUF | IAD | 20:13 | 21:19 |
En-Route
|
Track > |
United Airlines Flight UA4378 connects Buffalo, United States to Washington, United States, taking off from Buffalo Niagara International Airport BUF and landing at Washington Dulles International Airport IAD.
What is the On-Time Performance (OTP) of United Airlines Flight UA4378 Buffalo to Washington?
The Airportia On-Time Performance Rating for United Airlines Flight UA4378 is 5/5 stars. This metric is calculated using data from the past 10 flights.
When was the latest UA4378 flight?
The latest flight took off on Friday, August 21st, 2026 with the flight status being Scheduled on 21:19.
How else can the flight UA4378 be referenced as?
This United Airlines flight can also be referenced as UAL4378, UA 4378, UAL 4378.
How often is flight UA4378 delayed?
On average, 0% of all UA4378 flights are delayed. The average delay is 0 minutes.
Can I get compensation for my delayed or cancelled UA4378 flight or baggage issues?
If your UA4378 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 UA4378 Flight Tracker above for more details.
Other flights departing from Buffalo BUF: DL5250, C54378, F91351, WN8504
Other flights arriving at Washington IAD: C54378, YV6270, Y44312, UA6194
All flights connecting Buffalo BUF to Washington IAD.