DL4639 Delta Air Lines - Flight Status
Below, you can find details about Delta Air Lines flight DL4639, which currently operates between the airports of Buffalo - Buffalo Niagara International Airport (Airport Code BUF) and Detroit - Detroit Metropolitan Wayne County Airport (Airport Code DTW).
This flight data pertains specifically to the flight's details for Friday, January 30, 2026.
Table of contents:
Flight Status Codeshare Flights Additional Information Alternative Flights Punctuality and delays Last Past Flights DL4639
Flight Status Codeshare Flights Additional Information Alternative Flights Punctuality and delays Last Past Flights DL4639
DL4639 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
DL4639 Delta Air Lines from Buffalo
Landed - On-time
Flight Status for Friday January 30, 2026
This flight is also scheduled for Tomorrow (February 01, 2026). See it here
Landed - On-time
Flight Status for Friday January 30, 2026
Airline information
Delta Air Lines
Equipment: Canadair (Bombardier) Regional Jet 900 and Challenger 890
Departure
Buffalo (BUF)
January 30, 2026
Buffalo Niagara International Airport
Departed at:
10:28 am
Terminal:
M
Gate:
23
Scheduled Departure Time: 10:33 am
Arrival
Detroit (DTW)
January 30, 2026
Detroit Metropolitan Wayne County Airport
Arrived at:
11:46 am
Terminal:
M - McNamara
Gate:
B6
Scheduled Arrival Time: 11:58 am
Disclaimer
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Codeshare Flights
This flight is shared with other airlines, this means that these other flights are the same:
- KL6857 - KLM Royal Dutch Airlines
Additional Information
Which is the frequency of flight DL4639?
The flight DL4639 is scheduled to flight on Monday, Thursday, Friday, Sunday on a weekly basis.
Which is the distance of flight DL4639?
The distance between the two airports is 241 miles.
Are the departure airport and arrival airport at the same Time Zone?
Yes, both airports are in the same timezone.
The flight DL4639 is scheduled to flight on Monday, Thursday, Friday, Sunday on a weekly basis.
Which is the distance of flight DL4639?
The distance between the two airports is 241 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 airline serve the same route between Buffalo and Detroit:
Delta Air Lines - Flight Number: DL1322. (On Time performance: 76 - Average Delay: 44 minutes)
Delta Air Lines - Flight Number: DL1322. (On Time performance: 76 - Average Delay: 44 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: It is not possible to calculate the On-Time Performance for this flight accurately by month 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: It is not possible to calculate the On-Time Performance for this flight accurately by month due to insufficient or non-representative data, as doing so could lead to misleading conclusions
Last Past Flights DL4639
Date
Departure
Arrival
Duration
Aircraft
Status
Friday
30 January
30 January
10:28 am
Buffalo (BUF)
Buffalo (BUF)
11:46 am
Detroit (DTW)
Detroit (DTW)
01h 18min
Canadair (Bomb
Canadair (Bomb
Landed - On-time
Thursday
29 January
29 January
10:29 am
Buffalo (BUF)
Buffalo (BUF)
12:04 pm
Detroit (DTW)
Detroit (DTW)
01h 35min
Canadair (Bomb
Canadair (Bomb
Landed - On-time
Monday
26 January
26 January
11:55 am
Buffalo (BUF)
Buffalo (BUF)
01:17 pm
Detroit (DTW)
Detroit (DTW)
01h 22min
Canadair (Bomb
Canadair (Bomb
Landed - Delayed
Sunday
25 January
25 January
10:55 am
Buffalo (BUF)
Buffalo (BUF)
12:20 pm
Detroit (DTW)
Detroit (DTW)
01h 25min
Canadair (Bomb
Canadair (Bomb
Friday
23 January
23 January
01:19 pm
Buffalo (BUF)
Buffalo (BUF)
02:39 pm
Detroit (DTW)
Detroit (DTW)
01h 20min
Canadair (Bomb
Canadair (Bomb
Landed - Delayed
Thursday
22 January
22 January
10:31 am
Buffalo (BUF)
Buffalo (BUF)
12:11 pm
Detroit (DTW)
Detroit (DTW)
01h 40min
Canadair (Bomb
Canadair (Bomb
Landed - On-time
Monday
19 January
19 January
10:29 am
Buffalo (BUF)
Buffalo (BUF)
12:05 pm
Detroit (DTW)
Detroit (DTW)
01h 36min
Canadair (Bomb
Canadair (Bomb
Landed - On-time