Airport Hacks & Reviews Guide to LaGuardia Airport (LGA) - NON OFFICIAL

AA4639 American Airlines - Flight Status

Below, you can find details about American Airlines flight AA4639, which currently operates between the airports of New York - New York LaGuardia Airport (Airport Code LGA) and Buffalo - Buffalo Niagara International Airport (Airport Code BUF).
This flight data pertains specifically to the flight's details for Sunday, December 21, 2025.

AA4639 On Time performance:
n/a
It is not possible to calculate the On-Time Performance for this flight accurately due to insufficient or non-representative data, as doing so could lead to misleading conclusions.

Flight Status

AA4639 American Airlines to Buffalo

Scheduled - On-time
Flight Status for Sunday December 21, 2025
This flight was also scheduled for Yesterday (December 20, 2025). See it here
This flight is also scheduled for Tomorrow (December 22, 2025). See it here

Airline information

American Airlines
American Airlines
Equipment: Embraer 170

Departure

New York (LGA)
December 21, 2025
New York LaGuardia Airport
Estimated Departure Time:
01:50 pm
Terminal:
B
Gate:
11
Scheduled Departure Time: 01:50 pm

Arrival

Buffalo (BUF)
December 21, 2025
Buffalo Niagara International Airport
Estimated Arrival Time:
03:24 pm
Terminal:
-
Gate:
5
Scheduled Arrival Time: 03:24 pm
Disclaimer
The information displayed on this website is gathered from third-party providers with a wide reputation on the sector, which in turn obtain the information from the airlines. This data is provided only for informative purposes. www.laguardia-airport.com assumes no responsibility for loss or damage as a result of relying on information posted here. Please contact your airline to verify flight status.

Additional Information

Which is the frequency of flight AA4639?
The flight AA4639 is scheduled to flight on Thursday, Friday, Saturday, Sunday on a weekly basis.

Which is the distance of flight AA4639?
The distance between the two airports is 291 miles.

Are the departure airport and arrival airport at the same Time Zone?
Yes, both airports are in the same timezone.

Alternative Flights

The following airlines serves the same route between New York and Buffalo:

American Airlines
- Flight Number: AA4496. (On Time performance: 60 - Average Delay: 29 minutes)
- Flight Number: AA4736. (On Time performance: 56 - Average Delay: 37 minutes)
- Flight Number: AA4738. (On Time performance: 74 - Average Delay: 19 minutes)

Delta Air Lines
- Flight Number: DL4971. (On Time performance: 69 - Average Delay: 36 minutes)
- Flight Number: DL5214. (On Time performance: 83 - Average Delay: 17 minutes)
- Flight Number: DL5654. (On Time performance: 69 - Average Delay: 23 minutes)
- Flight Number: DL5661. (On Time performance: 83 - Average Delay: 12 minutes)
- Flight Number: DL5797. (On Time performance: 66 - Average Delay: 25 minutes)

Punctuality and delays

It is not possible to calculate the On-Time Performance for this flight accurately due to insufficient or non-representative data, as doing so could lead to misleading conclusions.

Delays analyzed by Week: It is not possible to calculate the On-Time Performance for this flight accurately by weekday due to insufficient or non-representative data, as doing so could lead to misleading conclusions
Delays analyzed by Month: We have gathered available data from last twelve closed months, spanning from April 04, 2025 to June 04, 2025. Next, you can observe the results broken down by month: number of flights analyzed, on-time performance per month, and average delay per month.

Note: We have excluded some months from the graph, since the quantity and quality of the data is not representative enough.

Last Past Flights AA4639

Date
Departure
Arrival
Duration
Aircraft
Status
Saturday
20 December
02:28 pm
New York (LGA)
03:50 pm
Buffalo (BUF)
01h 22min
Embraer 175 (E
Embraer 175 (E
Landed - On-time
Friday
19 December
05:15 pm
New York (LGA)
11:00 pm
Buffalo (BUF)
05h 45min
Embraer 175
Embraer 175
Thursday
18 December
01:44 pm
New York (LGA)
02:57 pm
Buffalo (BUF)
01h 13min
Embraer 170
Embraer 170
Landed - On-time