KL6021 Flight Status KLM: Boston to London (KLM6021)

Are you looking for the November 9th, 2026 KL 6021 Seattle to London flight? Go to our KL6021 Seattle to London Flight Status page >

KL 6021 Boston to London Flight Status

Not scheduled today (November 9th, 2026). Latest flight: November 5th, 2026 ; recent history is in the table below.

KL 6021 Flight Status & Schedule KLM Boston to London

Date From To Departure Arrival Status Details
Nov 05 BOS LHR 04:11 16:01 Delayed Track >

KLM operates KL 6021 from Boston to London, a 5,239 km (3,256 mi) trip, once a week, on Thursdays. The timetable allows 6 h 25 min; there is not enough recent history yet to say how long it usually takes. It is not flying today; the last flight was scheduled on Thursday.

< All Boston BOS Departures All London LHR Arrivals >

About KL 6021

Route
Boston Logan International Airport BOS to London Heathrow Airport LHR
Distance
5,239 km (3,256 mi)
Scheduled flight time
6 h 25 min
Flies
Thu

Arriving in the UK on an EU carrier, this flight is covered by UK261. Compensation of up to £520 per passenger can apply when it arrives 3 or more hours late or is cancelled.

KL 6021 FAQ

How long is the KL6021 flight?
The timetable allows 6 h 25 min. Boston to London is 5,239 km (3,256 mi).
Which days does KL6021 fly?
Once a week, on Thursdays, based on the schedule of the last 7 days.
What other flight numbers does KL6021 have?
Also listed as KLM6021 (KLM's ICAO code) and KL 6021.
Can I get compensation if KL6021 is delayed or cancelled?
Up to £520 per passenger may be due under UK261 when it arrives 3 or more hours late or is cancelled, unless the cause was outside the airline's control. Arriving in the UK on an EU carrier, this flight is covered by UK261.

KL6021 and Boston BOS to London LHR Flights

Flight KL6021 is a code-share KLM flight of the Delta Air Lines operated DL20.

Other flights departing from Boston BOS: CX811, AA2591, DL20

Other flights arriving at London LHR: BA104, TK1985, BA309, BA1345

All flights connecting Boston BOS to London LHR.