Cheap flights from New York John F Kennedy Intl Airport to London from $389

The month of January is, on average, the cheapest month to fly to London Heathrow Airport from New York John F Kennedy Intl Airport, with most prices found around $735. If you aren’t able to travel during the month of January, then book flights to London Heathrow Airport from New York John F Kennedy Intl Airport during February instead. Flights to London Heathrow Airport in February, while not as cheap as those in January, still average around $750.

Our data shows that Thursday is the least expensive day to fly to London Heathrow Airport. Tickets to fly out on this day can be as low as $881. When flying out on a Wednesday, 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 Heathrow Airport for around $2,356.

In the morning is the cheapest time of day to fly from New York John F Kennedy Intl Airport to London Heathrow Airport when you can find flight prices for as low as $1,163. Flying to London Heathrow Airport in the morning is an ideal time because this is during off-peak travel hours. In contrast, the most expensive time of day to depart to London Heathrow Airport is in the afternoon when prices are around $1,613.

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

You are more likely to see cheaper flights to London Heathrow Airport 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 Heathrow Airport for around $1,012 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London Heathrow Airport from New York John F Kennedy Intl Airport for as low as $930 on momondo.

There are 2 cabin classes available to choose from on New York John F Kennedy Intl Airport to London Heathrow Airport flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Historically, on average around 14% 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 161 minutes.

Generally, flights departing in the early afternoon tend to experience fewer delays. Flights departing at night 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. Sunday 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 11% of their flights experiencing any sort of delay.

As of September 2026, there are 109 flights per day flying from New York John F Kennedy Intl Airport to London Heathrow Airport. The most common time of day flights depart is 18:00, with 84% of flights taking off in the evening.

As of September 2026, 768 flights take off from New York John F Kennedy Intl Airport and land in London Heathrow Airport each week. The most common flight departure day for this route is Mon, with 15% of weekly flights taking off on this day.