Cheap flights from New York John F Kennedy Intl Airport to London from €246

In general, February is the cheapest month to fly from New York John F Kennedy Intl Airport to London. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around €435. If you are unable to visit London during the month of February, then departing from New York John F Kennedy Intl Airport during the month October is also very affordable. Most momondo users find prices during this month for around €438.

Our data shows that Monday is the least expensive day to fly to London. Tickets to fly out on this day can be as low as €434. When flying out on a Sunday, 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 €700.

The cheapest time of day to fly to London is in the morning when flights can be purchased for as low as €470. In contrast, the most expensive time of day to depart to London is in the evening when prices are around €565.

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 €521 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 €494 on momondo.

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 158 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 105 flights per day flying from New York John F Kennedy Intl Airport to London. The most common time of day flights depart is 20:00, with 82% of flights taking off in the evening.

As of May 2026, 739 flights take off from New York John F Kennedy Intl Airport and land in London each week. The most common flight departure day for this route is Sat, with 15% of weekly flights taking off on this day.