| Date | From | To | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Sep 29 | BOS | BUF | 19:10 | 20:56 |
Scheduled
|
Track > |
| Sep 28 | BOS | BUF | 19:10 | 20:56 |
Delayed >3h
|
Track > |
| Sep 25 | BOS | BUF | 19:10 | 20:56 |
Delayed
|
Track > |
| Sep 24 | BOS | BUF | 19:10 | 20:56 |
Scheduled
|
Track > |
| Sep 23 | BOS | BUF | 19:10 | 20:56 |
Scheduled
|
Track > |
| Sep 22 | BOS | BUF | 19:10 | 20:56 |
Scheduled
|
Track > |
| Sep 21 | BOS | BUF | 19:10 | 20:56 |
Scheduled
|
Track > |
| Sep 20 | BOS | BUF | 19:10 | 20:56 |
Delayed >1h
|
Track > |
| Sep 18 | BOS | BUF | 19:10 | 20:56 |
Scheduled
|
Track > |
| Sep 17 | BOS | BUF | 19:10 | 20:56 |
Delayed
|
Track > |
Republic Airlines Flight YX4439 connects Boston, United States to Buffalo, United States, taking off from Boston Logan International Airport BOS and landing at Buffalo Niagara International Airport BUF.
How many YX4439 flights are operated per week?
4 flights per week. The flight YX4439 is operated on Monday, Tuesday, Thursday and Friday.
What is the On-Time Performance (OTP) of Republic Airlines Flight YX4439 Boston to Buffalo?
The Airportia On-Time Performance Rating for Republic Airlines Flight YX4439 is 5/5 stars. This metric is calculated using data from the past 10 flights.
When was the latest YX4439 flight?
The latest flight took off on Wednesday, September 30th, 2026 with the flight status being Scheduled on 20:56.
How else can the flight YX4439 be referenced as?
This Republic Airlines flight can also be referenced as RPA4439, YX 4439, RPA 4439.
How often is flight YX4439 delayed?
On average, 0% of all YX4439 flights are delayed. The average delay is 0 minutes.
Can I get compensation for my delayed or cancelled YX4439 flight or baggage issues?
If your YX4439 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 YX4439 Flight Tracker above for more details.
Flight YX4439 is code-shared by 2 airlines using the flight numbers AS4285, IB8649
Other flights departing from Boston BOS: B6451, DL973, UA2136, WN672
Other flights arriving at Buffalo BUF: WN3641, UA1335, WN940, PT5795
All flights connecting Boston BOS to Buffalo BUF.