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 812 datapoints.)
The best day to arrive at London is Tuesday and it would be best to avoid Saturday, as prices are on average 47.42% higher than on Tuesday. (Average prices, based on 812 datapoints.)
The cheapest airline flying to London is Ryanair. They are 88% cheaper than Air China. (Average prices, based on 880 datapoints.)
At London the most flights depart around 07:00. (Hourly flights, based on 1048 datapoints.)
From London it is on average the cheapest to fly to Amsterdam and to Istanbul. (Average prices, based on 747 datapoints.)
From London most of the flights depart to Amsterdam, second best connected from London is Malaga. (Daily flights, based on 129 datapoints.)