Flight Heathrow Airport departs from London Heathrow Airport at 07:30 and arrives at Frankfurt Frankfurt Airport at 10:05.
The flighttime is about 1h 35m. The distance travelled ("as the bird flies"): 1014 Km. So the average speed is roughly 640 Km.
There is an 1 hour time difference between London and Frankfurt
The best day to arrive at London is Thursday and it would be best to avoid Monday, as prices are on average 218.48% higher than on Thursday. (Average prices, based on 785594 datapoints.)
We have a lot more statistics for flights LH 923 and between London and Frankfurt.