| Date | From | To | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Jun 06 | BUF | DTW | 15:59 | 16:38 |
Landed
|
Track > |
| Jun 05 | BUF | DTW | 15:52 | 17:08 |
Delayed
|
Track > |
| Jun 04 | BUF | DTW | 15:52 | 17:08 |
Scheduled
|
Track > |
| Jun 02 | BUF | DTW | 16:08 | 16:49 |
Landed
|
Track > |
| Jun 01 | BUF | DTW | 16:05 | 16:51 |
Landed
|
Track > |
| May 31 | BUF | DTW | 15:52 | 17:08 |
Delayed
|
Track > |
| May 29 | BUF | DTW | 16:14 | 16:57 |
Landed
|
Track > |
| May 28 | BUF | DTW | 16:00 | 16:44 |
Landed
|
Track > |
| May 25 | BUF | DTW | 16:01 | 16:44 |
Landed
|
Track > |
| May 24 | BUF | DTW | 16:07 | 16:48 |
Landed
|
Track > |
Delta Air Lines Flight DL4021 connects Buffalo, United States to Detroit, United States, taking off from Buffalo Niagara International Airport BUF and landing at Detroit Metropolitan Wayne County Airport DTW.
How long is the DL4021 flight from Buffalo to Detroit?
The average flight time from Buffalo to Detroit is 42 minutes. The flight distance is 387 km / 240 miles and the average flight speed is 476 km/h / 296 mph.
What is the On-Time Performance (OTP) of Delta Air Lines Flight DL4021 Buffalo to Detroit?
The Airportia On-Time Performance Rating for Delta Air Lines Flight DL4021 is 5/5 stars. This metric is calculated using data from the past 10 flights.
Which terminal is the flight DL4021 arriving at?
Flight DL4021 arrives at Detroit Metropolitan Wayne County Airport (DTW) Terminal M.
When was the latest DL4021 flight?
The latest flight took off on Saturday, June 6th, 2026 with the flight status being Landed on 16:38.
How else can the flight DL4021 be referenced as?
This Delta Air Lines flight can also be referenced as DAL4021, DL 4021, DAL 4021.
How often is flight DL4021 delayed?
On average, 0% of all DL4021 flights are delayed. The average delay is 0 minutes.
Can I get compensation for my delayed or cancelled DL4021 flight or baggage issues?
If your DL4021 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 DL4021 Flight Tracker above for more details.
Flight DL4021 is code-shared by 4 airlines using the flight numbers AF8686, KL5317, VS4311, WS6731
Other flights departing from Buffalo BUF: B62401, WN1094, WN807, WN2928
Other flights arriving at Detroit DTW: DL2371, DL5426, DL5021, DL5795
All flights connecting Buffalo BUF to Detroit DTW.