OR 393 then KL 1011 at Schiphol
Willemstad → Amsterdam → London Heathrow
Timetable, Amsterdam time
08:55OR 393 from Willemstad at the gate
15:45KL 1011 to London Heathrow leaves the gate
6 h 50 apart on the timetable
The last days
OR 393 and KL 1011 weren’t both flown 15 min to 12 h apart in the last 21 days.
Statistics from past flights, not live flight information. Always check times and your connection with your airline, and don’t base travel or booking decisions on these numbers.