Cheap flights from New York John F Kennedy Intl Airport to London from $398

If you aren’t able to travel during the month of February, then book flights to London from New York John F Kennedy Intl Airport during October instead. Flights to London in October, while not as cheap as those in February, still average around $708.

Our data shows that Wednesday is the least expensive day to fly to London. Tickets to fly out on this day can be as low as $710. When flying out on a Friday, the most expensive travel day of the week, you can expect to see flight prices from New York John F Kennedy Intl Airport to London for around $1,321.

The cheapest time of day to fly to London is in the afternoon when flights can be purchased for as low as $684. In contrast, the most expensive time of day to depart to London is in the evening when prices are around $867.

Fly from New York John F Kennedy Intl to London Gatwick for the best New York John F Kennedy Intl - London flight prices

You are more likely to see cheaper flights to London from New York John F Kennedy Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to London for around $849 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London from New York John F Kennedy Intl Airport for as low as $821 on momondo.

You could potentially save up to 18% on your flight if you consider stops on a New York John F Kennedy Intl Airport to London flight.

As of May 2026, prices for New York John F Kennedy Intl Airport to London flights are approximately 47% more expensive when compared to flights at the same time last year.

Historically, on average around 15% of flights between New York and London have experienced a delay on any given week. The average delay length over the past 12 months has been 160 minutes.

Generally, flights departing in the morning tend to experience fewer delays. Flights departing in the early afternoon have, in the past, seen delays more frequently in comparison.

Tuesday is statistically the day of the week that experiences the fewest delays on this flight route. Thursday has historically seen more delays on average compared to the rest of the week.

According to our data, British Airways have had the fewest delays on this route over the last 12 months, with about 12% of their flights experiencing any sort of delay.

As of May 2026, there are 104 flights per day flying from New York John F Kennedy Intl Airport to London. The most common time of day flights depart is 18:00, with 83% of flights taking off in the evening.

As of May 2026, there are 728 flights per week flying from New York John F Kennedy Intl Airport to London. The most common day of the week flights depart is Mon, with 15% of flights taking off on this day.