| Date | From | To | Departure | Arrival | Status | |
|---|---|---|---|---|---|---|
| Oct 25 | MCI | BOS | 12:37 | 16:08 |
Landed
|
Track > |
| Oct 18 | MCI | BOS | 12:40 | 16:12 |
Landed
|
Track > |
| Oct 11 | MCI | BOS | 12:51 | 16:30 |
Landed
|
Track > |
| Sep 10 | MCI | BOS | 11:06 | 14:52 |
Landed
|
Track > |
| Sep 09 | MCI | BOS | 10:56 | 14:45 |
Landed
|
Track > |
| Sep 08 | MCI | BOS | 11:58 | 15:34 |
Landed Late
|
Track > |
| Sep 07 | MCI | BOS | 10:58 | 14:28 |
Delayed
|
Track > |
| Sep 06 | MCI | BOS | 19:50 | 23:58 |
Cancelled
|
Track > |
| Claim > | ||||||
| Sep 05 | MCI | BOS | 12:01 | 15:28 |
Landed Late
|
Track > |
| Sep 04 | MCI | BOS | 12:04 | 15:50 |
Landed Late
|
Track > |
KLM Flight KL5421 connects Kansas City, United States to Boston, United States, taking off from Kansas City International Airport MCI and landing at Boston Logan International Airport BOS.
How long is the KL5421 flight from Kansas City to Boston?
The average flight time from Kansas City to Boston is 2 hours and 37 minutes. The flight distance is 2017 km / 1253 miles and the average flight speed is 758 km/h / 471 mph.
What is the On-Time Performance (OTP) of KLM Flight KL5421 Kansas City to Boston?
The Airportia On-Time Performance Rating for KLM Flight KL5421 is 4.8/5 stars. This metric is calculated using data from the past 10 flights.
Which terminal is the flight KL5421 arriving at?
Flight KL5421 arrives at Boston Logan International Airport (BOS) Terminal A.
When was the latest KL5421 flight?
The latest flight took off on Saturday, October 25th, 2025 with the flight status being Landed on 16:08.
How else can the flight KL5421 be referenced as?
This KLM flight can also be referenced as KLM5421, KL 5421, KLM 5421.
How often is flight KL5421 delayed?
On average, 40% of all KL5421 flights are delayed. The average delay is 35 minutes.
Can I get compensation for my delayed or cancelled KL5421 flight or baggage issues?
If your KL5421 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 KL5421 Flight Tracker above for more details.
Other flights departing from Kansas City MCI: DL2233, DL5617, WN285, WN3237
Other flights arriving at Boston BOS: DL5592, DL5617, AA3090, AA2593
All flights connecting Kansas City MCI to Boston BOS.
