The estimated time is 6Hrs 30min. This is what you get if you Google it or ask a flight desk representative.
However the more accurate time in the air would be calculated considering a distance of 4999Km and a speed of 900Km/hr which would give you a time of 5Hrs and 33min.
This would be the journey time minus take off, landing time, time cruising and waiting for permission to land.
Hope this answers your question.
Regards.
500000 years
48 minutes
1600 years
12 hours.
7 hours
7 hours
Three hours
3-4 hours
bout tree fity
78 seconds
Approximate flight duration time from New York to Luxembourg is: 8 hrs
8 and a half hours.
4hrs n 30 min