Most travellers find the cheapest return flights to London when choosing a flight departing in October.
In general, most flyers find the cheapest time to book a flight to London is about 60 days prior.
On average, the cheapest flights to London are found when departing on a Wednesday. Try to avoid departing on a Sunday, as this is usually the most expensive day.
In general, when looking for the cheapest flight to London, our data indicates that afternoon flights are the most cost-effective. midday flights tend to be the most expensive.