Flight KL4803
KLM | Boston to London
Departure
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Return
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KL4803 | Boston to London
Operated by KLM with 87% on-time rate. Check schedules, fares & cabin info to book your perfect journey!
Flight Information
Boston (BOS) to London (LHR)
87%On-time Rate
Departure
20:00
Logan International Airport E
BOS
6h 50m
Direct
Arrival
06:55
Heathrow Airport
LHR
Terminal T3
Airline
KLM
Aircraft
Airbus A330-900
Seats
--
Aircraft Age
--
Boarding Gate: --
Check-in closes at 2026-01-31 19:00. Passengers are advised to arrive at the airport at least 2 hours prior to boarding.
Flight Punctuality
On-time performance data for flight KL4803
Departure Punctuality
On-time Rate
Punctuality 80%
Avg Delay
Late on average 26 minutes
Early
3%
On-time
77%
Delay <30min
7%
Delay 30-60min
7%
Delay >60min
7%
Cancelled
0%
Arrival Punctuality
On-time Rate
Punctuality 80%
Avg Delay
Late on average 26 minutes
Early
3%
On-time
77%
Delay <30min
7%
Delay 30-60min
7%
Delay >60min
7%
Cancelled
0%
Based on KL4803 flight history for Last 30 Days. On-time rate: Punctuality 80%, average delay: Late on average 26 minutes.
Flight Schedule
Upcoming schedule for flight KL4803
Fri, Jan 30
KL4803
KLM
339
20:21
BOS
Boston
Direct
07:16
LHR
London
Mon, Jan 26
KL4803
KLM
339
21:33
BOS
Boston
Direct
08:38
LHR
London
Sat, Jan 31
KL4803
KLM
339
20:00
BOS
Boston
Direct
06:55
LHR
London
Sun, Jan 25
KL4803
KLM
333
20:00
BOS
Boston
Direct
06:34
LHR
London
Thu, Jan 29
KL4803
KLM
339
20:20
BOS
Boston
Direct
07:18
LHR
London
Tue, Jan 27
KL4803
KLM
339
21:04
BOS
Boston
Direct
07:58
LHR
London
Wed, Jan 28
KL4803
KLM
339
20:26
BOS
Boston
Direct
07:26
LHR
London
Schedule Information
Flight schedules are subject to change. Please check with the airline for the most up-to-date information.
Cabin Information
Available cabin classes for flight KL4803
💼
Business
KL4803
Seat Information
--
Legroom
--
Seat width
--
Reclining Angle
Facilities & Amenities
Meal included
Seatback entertainment system
Wi-Fi (additional charge)
USB port and power outlet
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