Cheap flights from New York John F Kennedy Intl Airport to London from $243

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 $524. If you’re not able to fly to London Heathrow Airport in January, then October is your next best option. Flight prices from New York John F Kennedy Intl Airport to London Heathrow Airport during October average around $528.

Our data shows that Wednesday is the least expensive day to fly to London Heathrow Airport. Tickets to fly out on this day can be as low as $702. The most expensive day to fly to London Heathrow Airport is Saturday, with ticket prices averaging around $749.

According to our data, the cheapest time of day to fly to London Heathrow Airport is in the morning. momondo users have found flights departing from New York John F Kennedy Intl Airport to London Heathrow Airport in the morning for as low as $675. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights in the evening are often more expensive with an average ticket price of $748.

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 $643 when searching weeks out. 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 $595 on momondo.

There are 4 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.

No. A direct flight is the cheapest option for a flight between New York John F Kennedy Intl Airport to London Heathrow Airport.

As of July 2026, prices for New York John F Kennedy Intl Airport to London Heathrow Airport flights are approximately 26% cheaper when compared to flights at the same time last year.

KLM and Delta are the most popular carriers operating from New York John F Kennedy Intl to London Heathrow

British Airways, Virgin Atlantic and Delta are the top three most popular airlines that fly to London Heathrow Airport from New York John F Kennedy Intl Airport according to our data. British Airways is the first choice among our users, with 47% of people opting to fly with this airline when traveling to London Heathrow Airport. Keep in mind that there are 17 different airlines that fly to London Heathrow Airport on a routine basis, so you have a few additional options to choose from.

Historically, on average around 13% 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 early afternoon tend to experience fewer delays. Flights at night have, in the past, seen delays more frequently in comparison.

Tuesday is statistically the day of the week which experiences the fewest number of 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 least number of delays on this route over the last 12 months; with about 10% of their flights experiencing any sort of delay.

Dublin (DUB) was the most common stop: 40% of momondo users choosing 1-stop flights on this route connected there.

Flights via Shannon (SNN) offer the lowest average round-trip price of $473.

Flights connecting via Shannon (SNN) have the shortest average one-way travel time: 9h 40m.

Dublin (DUB) has the shortest average layover time for this route: 1h 49m.

As of July 2026, 98 flights take off from New York John F Kennedy Intl Airport and land in London Heathrow Airport each day. The most common flight departure time for this route is 8:00PM, with 83% of daily flights taking off in the evening.

690 flights are operational weekly from New York John F Kennedy Intl Airport to London Heathrow Airport as of July 2026. The most popular departure day for this route is Tue, with 16% of flights per week taking off on this day.