Delta Air Lines
DL4639 Flight Status
According to Trip.com latest record on status for Delta Air Lines flight DL4639 from Detroit to Buffalo (DTW-BUF): Flight DL4639 has been canceled. Please refer to the airline or airport for the most up-to-date information.
Wed, Sep 30
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Cancelled
Contact your airline for the latest information.
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Boarding Gate
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Arrival Gate
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Baggage
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DL4639 Aircraft Specifications
According to Trip.com real-time data, the DL4639 flight from Buffalo to Detroit on 10/10/2026 is operated using the aircraft model Bombardier Regional Jet 900. This aircraft has been in service for 5y. The aircraft has 76 seats.
Bombardier Regional Jet 900
On-Time Departure
72
%
On-Time Arrival
84
%
Avg. Early
1 minute
Aircraft Age
5y
Total Seats
76
Flight Distance
--
Economy
First
Premium Economy
Cabin Amenities
None
In-flight entertainment is unavailable
Wi-Fi is available
No power outlets are available
Seat Information
79 cm
Legroom
44 cm
Seat width
100°
Reclining Angle
--
Seat layout example
Cabin Amenities
None
In-flight entertainment is unavailable
Wi-Fi is available
No power outlets are available
Seat Information
94 cm
Legroom
50 cm
Seat width
135°
Reclining Angle
--
Seat layout example
Cabin Amenities
None
In-flight entertainment is unavailable
Wi-Fi is available
No power outlets are available
Seat Information
86 cm
Legroom
44 cm
Seat width
120°
Reclining Angle
--
Seat layout example
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DL4639 Flight History
Check more records from Trip.com about DL4639 before and after today
| Date | Airport | Aircraft Model | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Departure | Arrival | |||||
| Wed, Sep 30 | Detroit (DTW) | Buffalo (BUF) | CR9 | -- | -- | Cancelled |
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DL4639 On-Time Performance
Based on the average performance of this flight over the last 30 trips, the on-time departure rate of DL4639 is 72% (Late on average 31 minutes), and the on-time arrival rate is 84% (Early on average 1 minute).
On-Time Departures
Punctuality
72
%
Late on average
31 minutes
Early
0
%
On time
72
%
30 mins late
12
%
60 mins late
8
%
90 mins late
8
%
Cancelled
0
%
On-Time Arrivals
Punctuality
84
%
Early on average
1 minute
Early
72
%
On time
12
%
30 mins late
8
%
60 mins late
0
%
90 mins late
8
%
Cancelled
0
%
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Flight FAQs
-
What is the current status of flight dl4639?
Flight dl4639 has been canceled (status: Cancelled). Contact Delta Air Lines or your booking channel for rebooking or refund (updated Oct 10, 2026). -
Is flight dl4639 on time today?
Flight dl4639 has been canceled (status: Cancelled). Contact Delta Air Lines or your booking channel for rebooking or refund options; if booked on Trip.com, use Manage Booking. -
Has flight dl4639 departed yet? What is the departure time?
Flight dl4639 is scheduled to depart at 07:10. The latest actual or estimated departure time is 07:10, and the current status is Cancelled (updated Oct 10, 2026). -
When is flight dl4639 scheduled to arrive?
Flight dl4639 is scheduled to arrive at 08:23. The latest estimated or actual arrival time is 08:23. Status is Cancelled as of Oct 10, 2026. -
How can I check real-time status for flight dl4639?
Track flight dl4639 on this Trip.com status page for live departure, arrival, gate and baggage updates. For push alerts on the go, open the same flight in the Trip.com App and turn on flight notifications. -
If flight dl4639 is delayed or canceled, what should I do?
If dl4639 is delayed or canceled, first confirm the latest status here (Cancelled, updated Oct 10, 2026). Contact Delta Air Lines or your booking channel for rebooking or refund options, and check Trip.com Manage Booking if you booked on Trip.com. -
Has flight dl4639 departed from Detroit?
Flight dl4639 has been canceled and did not depart from Detroit (DTW). Contact Delta Air Lines or your booking channel for next steps.
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