| Date | From | To | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Jul 03 | DTW | STL | 16:11 | 16:13 |
Landed
|
Track > |
| Jul 02 | DTW | STL | 16:14 | 16:22 |
Landed
|
Track > |
| Jul 01 | DTW | STL | 16:51 | 17:01 |
Landed Late
|
Track > |
| Jun 30 | DTW | STL | 16:18 | 16:30 |
Landed
|
Track > |
| Jun 29 | DTW | STL | 16:06 | 16:15 |
Landed
|
Track > |
| Jun 07 | DTW | STL | 16:31 | 16:53 |
Landed Late
|
Track > |
KLM Flight KL6421 connects Detroit, United States to St. Louis, United States, taking off from Detroit Metropolitan Wayne County Airport DTW and landing at St. Louis Lambert International Airport STL.
How long is the KL6421 flight from Detroit to St. Louis?
The average flight time from Detroit to St. Louis is 1 hour and 10 minutes. The flight distance is 707 km / 439 miles and the average flight speed is 606 km/h / 377 mph.
What is the On-Time Performance (OTP) of KLM Flight KL6421 Detroit to St. Louis?
The Airportia On-Time Performance Rating for KLM Flight KL6421 is 4.9/5 stars. This metric is calculated using data from the past 10 flights.
Which terminal is the flight KL6421 arriving at?
Flight KL6421 arrives at St. Louis Lambert International Airport (STL) Terminal 1.
When was the latest KL6421 flight?
The latest flight took off on Thursday, July 3rd, 2025 with the flight status being Landed on 16:13.
How else can the flight KL6421 be referenced as?
This KLM flight can also be referenced as KLM6421, KL 6421, KLM 6421.
How often is flight KL6421 delayed?
On average, 33% of all KL6421 flights are delayed. The average delay is 22 minutes.
Can I get compensation for my delayed or cancelled KL6421 flight or baggage issues?
If your KL6421 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 KL6421 Flight Tracker above for more details.
Incoming flight is DL4063 Grand Rapids GRR to Detroit DTW.
This is a multi leg flight of KLM KL6421. Next leg is St. Louis to Detroit
Other flights departing from Detroit DTW: DL3934, DL4055, DL3999, NK2674
Other flights arriving at St. Louis STL: DL2598, DL3934, NK2856, AA5109
All flights connecting Detroit DTW to St. Louis STL.
