Cheap flights from New York to London from $397

The month of February is, on average, the cheapest month to fly to London Heathrow Airport from New York, with most prices found around $794. If you aren’t able to travel during the month of February, then book flights to London Heathrow Airport from New York during January instead. Flights to London Heathrow Airport in January, while not as cheap as those in February, still average around $840.

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 $904. When flying out on a Monday, the most expensive travel day of the week, you can expect to see flight prices from New York to London Heathrow Airport for around $1,480.

In the evening is the cheapest time of day to fly from New York to London Heathrow Airport when you can find flight prices for as low as $1,211. Flying to London Heathrow Airport in the evening 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 $1,654.

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

You are more likely to see cheaper flights to London Heathrow Airport from New York when booking weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around $1,075 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 for as low as $991 on momondo.

There are 3 cabin classes available to choose from on New York 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 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 162 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 October 2026, 149 flights take off from New York and land in London Heathrow Airport each day. The most common flight departure time for this route is 18:00, with 76% of daily flights taking off in the evening.

As of October 2026, 1,043 flights take off from New York and land in London Heathrow Airport each week. The most common flight departure day for this route is Fri, with 16% of weekly flights taking off on this day.