Please be aware that London has multiple airports and that these results are for all airports serving the city.
The best month to arrive at London is November and the most expensive month to fly is September. (Average prices, based on 635 datapoints.)
The best day to arrive at London is Tuesday and it would be best to avoid Saturday, as prices are on average 63.96% higher than on Tuesday. (Average prices, based on 735 datapoints.)
The cheapest airline flying to London is Air Europa. They are 71% cheaper than SAS Scandinavian Airlines. (Average prices, based on 806 datapoints.)
At London the most flights depart around 13:00. (Hourly flights, based on 1133 datapoints.)
From London it is on average the cheapest to fly to Amsterdam and to Dusseldorf. (Average prices, based on 542 datapoints.)
From London most of the flights depart to Amsterdam, second best connected from London is Dubai. (Daily flights, based on 196 datapoints.)