Cheap flights from the United States to London from $249
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from the United States to London departing on 10/20. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Fly from
Fly to
Route
Depart
Return
New YorkLondon
JFK New York John F Kennedy Intl - LHR London Heathrow
JFKLHR
New York John F Kennedy Intl
Wed 4/7
5:10 pm-6:50 pm
1 stop20h 40m
London Heathrow
Tue 4/13
7:05 am-3:40 pm
1 stop13h 35m
New YorkLondon
JFK New York John F Kennedy Intl - LHR London Heathrow
JFKLHR
New York John F Kennedy Intl
Sat 12/19
6:00 pm-6:20 am
Nonstop7h 20m
London Heathrow
Tue 12/29
7:20 pm-10:25 pm
Nonstop8h 05m
New YorkLondon
JFK New York John F Kennedy Intl - LHR London Heathrow
JFKLHR
New York John F Kennedy Intl
Thu 12/3
5:45 pm-12:55 pm
2 stops38h 10m
London Heathrow
Sun 12/6
6:40 am-3:45 pm
1 stop14h 05m
New YorkLondon
JFK New York John F Kennedy Intl - LHR London Heathrow
JFKLHR
New York John F Kennedy Intl
Sat 12/19
10:29 pm-6:56 am
1 stop27h 27m
London Heathrow
Tue 12/29
7:25 am-10:38 am
Nonstop8h 13m
New YorkLondon
JFK New York John F Kennedy Intl - LHR London Heathrow
JFKLHR
New York John F Kennedy Intl
Sat 1/16
10:00 pm-6:55 pm
1 stop15h 55m
London Heathrow
Sat 1/30
6:00 am-8:05 pm
1 stop19h 05m
New YorkLondon
JFK New York John F Kennedy Intl - LHR London Heathrow
JFKLHR
New York John F Kennedy Intl
Tue 12/8
8:05 pm-8:10 am
Nonstop7h 05m
London Heathrow
Mon 12/28
4:40 pm-7:50 pm
Nonstop8h 10m
New YorkLondon
JFK New York John F Kennedy Intl - LHR London Heathrow
JFKLHR
New York John F Kennedy Intl
Wed 10/28
9:05 am-8:00 pm
Nonstop6h 55m
London Heathrow
Sat 11/7
4:40 pm-7:50 pm
Nonstop8h 10m
New YorkLondon
JFK New York John F Kennedy Intl - LHR London Heathrow
JFKLHR
New York John F Kennedy Intl
Thu 2/18
10:00 pm-5:30 pm
1 stop14h 30m
London Heathrow
Thu 2/25
12:25 pm-8:05 pm
1 stop12h 40m
New YorkLondon
JFK New York John F Kennedy Intl - LHR London Heathrow
JFKLHR
New York John F Kennedy Intl
Sat 11/7
9:15 pm-11:25 am
1 stop9h 10m
London Heathrow
Mon 11/16
6:50 pm-5:50 pm
2 stops28h 00m
New YorkLondon
JFK New York John F Kennedy Intl - LHR London Heathrow
JFKLHR
New York John F Kennedy Intl
Tue 12/8
3:45 pm-6:55 am
1 stop10h 10m
London Heathrow
Fri 1/1
8:05 am-11:20 am
Nonstop8h 15m
See travel insights to London from
How to get the cheapest flight ticket from United States to London Heathrow Airport
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to London Heathrow Airport?
The month of February is, on average, the cheapest month to fly to London Heathrow Airport from United States, with most prices found around $690. If you’re not able to fly to London Heathrow Airport in February, then January is your next best option. Flight prices from United States to London Heathrow Airport during January average around $709.
What is the cheapest day to depart on your flight to London Heathrow Airport?
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 $792. The most expensive day to fly to London Heathrow Airport is Saturday, with ticket prices averaging around $826.
What is the cheapest time of day to depart on your flight to London Heathrow Airport?
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 United States to London Heathrow Airport in the morning for as low as $776. 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 $826.
What is the cheapest United States to London Heathrow flight route?
Fly from Boston Logan Intl to London Heathrow for the best United States - London Heathrow flight prices
How far in advance should I book a flight to London Heathrow Airport?
You are more likely to see cheaper flights to London Heathrow Airport from United States when booking weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around $734 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 United States for as low as $673 on momondo.
What cabin class options are available on United States to London Heathrow Airport flights?
There are 4 cabin classes available to choose from on United States 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.
What is the cheapest airline that flies from United States to London Heathrow?
Delta, United Airlines, and British Airways are the most popular carriers operating from United States to London Heathrow
What airlines fly to London Heathrow Airport?
British Airways, United Airlines and American Airlines are the top three most popular airlines that fly to London Heathrow Airport from United States according to our data. British Airways is the first choice among our users, with 45% of people opting to fly with this airline when traveling to London Heathrow Airport. Keep in mind that there are 24 different airlines that fly to London Heathrow Airport on a routine basis, so you have a few additional options to choose from.
How often are flights from the United States to London delayed?
Historically, on average around 15% of flights between United States and London have experienced a delay on any given week. The average delay length over the past 12 months has been 161 minutes.
What is the most punctual flight time for the United States to London flights?
Generally, flights departing in the morning tend to experience fewer delays. Flights at night have, in the past, seen delays more frequently in comparison.
What day of the week experiences the fewest flight delays on this route?
Saturday is statistically the day of the week which experiences the fewest number of delays on this flight route. Sunday has historically seen more delays on average compared to the rest of the week.
Which airline has the best punctuality record on the United States to London flights?
According to our data, Virgin Atlantic have had the least number of delays on this route over the last 12 months; with about 11% of their flights experiencing any sort of delay.
How many flights depart from United States to London Heathrow Airport on average per day?
As of October 2026, there are 410 flights per day flying from United States to London Heathrow Airport. The most common time of day flights depart is 7:00PM, with 65% of flights taking off in the evening.
How many flights depart from United States to London Heathrow Airport on average per week?
2,870 flights are operational weekly from United States to London Heathrow Airport as of October 2026. The most popular departure day for this route is Tue, with 16% of flights per week taking off on this day.
Cheap United States to London Heathrow Airport flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from United States to London Heathrow Airport
Frequently asked questions about flying from the United States to London Heathrow Airport
When did momondo last update prices for flights from United States to London Heathrow Airport?
Prices for flights from United States to London Heathrow Airport are updated daily.
How many operators does momondo search for flights from United States to London Heathrow Airport?
As of October 2026, there are 23 operators available to choose from for flights from United States to London Heathrow Airport.
How old do you have to be to fly from United States to London Heathrow Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from United States to London Heathrow Airport.
What documentation or ID do you need to fly to London Heathrow Airport?
The necessary travel and health documents for your London Heathrow Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from United States to London Heathrow Airport?
momondo data reveals that the most frequently booked plane model on the route from United States to London Heathrow Airport is Boeing 787-9 Dreamliner, representing 22.61% of all bookings. The subsequent popular models are Boeing 777 at 20.11%, Boeing 777-300ER at 17.18%, and Airbus A350-1000 at 8.93%.
Best airlines flying from United States to London Heathrow Airport
Compare and see reviews for airlines that fly from United States to London Heathrow Airport with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $291 | Free Cancellation | Rating 7.3 435 reviews | |||
| PriceFrom $319 | Free Cancellation | Rating 6.9 639 reviews | |||
| PriceFrom $329 | Free Cancellation | Rating 7.1 3,043 reviews | |||
| PriceFrom $352 | Free Cancellation | Rating 7.5 2,090 reviews | |||
| PriceFrom $362 | Free Cancellation | Rating 7.2 56 reviews | |||
| PriceFrom $396 | Free Cancellation | Rating 7.0 3,254 reviews | |||
| PriceFrom $396 | Free Cancellation | Rating 7.2 2,383 reviews | |||
| PriceFrom $409 | Free Cancellation | Rating 7.4 2,010 reviews | |||
| PriceFrom $429 | Free Cancellation | Rating 7.3 1,816 reviews | |||
| PriceFrom $438 | Free Cancellation | Rating 6.2 624 reviews |
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Why should I use momondo to find a flight deal from United States to London?
momondo collates all your flight options in one place and lets you filter them to find the perfect flight from United States to London. momondo saves you time and could save you money on your trip.
Can I find flights from United States to London with flexible booking policies on momondo?
Yes. momondo allows you to filter the results for United States to London flights to just show those with flexible booking policies.
How can momondo help me find flights from United States to London?
momondo helps you find the best flight between United States and London by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.
I’m not ready to book a flight from United States to London right now. Can momondo alert me if prices change?
Of course. momondo tracks the price of United States to London flights. All you need is a valid email address and we will do the rest; it is that quick and easy.