How long is the KL6521 flight?

The timetable allows 2 hours. Cleveland to Boston is 904 km (561 mi).

What other flight numbers does KL6521 have?

Also listed as KLM6521 (KLM's ICAO code) and KL 6521.

KL6521 Flight Status KLM: Cleveland to Boston (KLM6521)

Are you looking for the November 9th, 2026 KL 6521 Seattle to Medford flight? Go to our KL6521 Seattle to Medford Flight Status page >

KL 6521 Cleveland to Boston Flight Status

Not scheduled today (November 9th, 2026). Latest flight: September 28th, 2026 ; recent history is in the table below.

KL 6521 Flight Status & Schedule KLM Cleveland to Boston

Date	From	To	Departure	Arrival	Status	Details
Sep 28	CLE	BOS	11:15	13:15	Cancelled	Track >

KLM operates KL 6521 from Cleveland to Boston, a 904 km (561 mi) trip. The timetable allows 2 hours; there is not enough recent history yet to say how long it usually takes. It is not flying today; the last flight, on 28 September 2026, was cancelled.

< All Cleveland CLE Departures All Boston BOS Arrivals >

About KL 6521

Route: Cleveland Hopkins International Airport CLE to Boston Logan International Airport BOS
Distance: 904 km (561 mi)
Scheduled flight time: 2 h

KL 6521 FAQ

How long is the KL6521 flight?: The timetable allows 2 hours. Cleveland to Boston is 904 km (561 mi).
What other flight numbers does KL6521 have?: Also listed as KLM6521 (KLM's ICAO code) and KL 6521.

KL6521 and Cleveland CLE to Boston BOS Flights

Flight KL6521 is a code-share KLM flight of the Delta Air Lines operated DL5674.

Other flights departing from Cleveland CLE: WN646, DL5674, DL816

Other flights arriving at Boston BOS: YX5654, DL5674, DL5761

All flights connecting Cleveland CLE to Boston BOS.