Cheap flights from the United States to London from $99
This is the cheapest round-trip 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 8/4. 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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JetBlue flights from United States to London Heathrow Airport
Our best JetBlue deals on United States to London Heathrow Airport flight tickets
JetBlue![JetBlue]()
Aug 4![JetBlue]()
Aug 11
JFK8:45 amNew York John F Kennedy Intl
7h 00m
LHR8:45 pmLondon Heathrow
LHR8:15 amLondon Heathrow
8h 04m
JFK11:19 amNew York John F Kennedy Intl
JetBlue![JetBlue]()
Jul 20![JetBlue]()
Aug 26
BOS6:40 pmBoston Logan Intl
6h 50m
LHR6:30 amLondon Heathrow
LHR8:25 amLondon Heathrow
7h 39m
BOS11:04 amBoston Logan Intl
SWISS flights from United States to London Heathrow Airport
Our best SWISS deals on United States to London Heathrow Airport flight tickets
SWISS![SWISS]()
Nov 26![SWISS]()
Dec 2
JFK4:25 pmNew York John F Kennedy Intl
10h 40m
1 stop
LHR8:05 amLondon Heathrow
LHR5:25 pmLondon Heathrow
26h 15m
1 stop
JFK2:40 pmNew York John F Kennedy Intl
SWISS![SWISS]()
Aug 14![SWISS]()
Aug 28
LAX7:35 pmLos Angeles
28h 40m
2 stops
LHR8:15 amLondon Heathrow
LHR5:15 pmLondon Heathrow
31h 15m
2 stops
LAX4:30 pmLos Angeles
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
Prices
Airlines
Other information
What is the cheapest month to fly to London Heathrow Airport?
The month of October is, on average, the cheapest month to fly to London Heathrow Airport from United States, with most prices found around $549. If you’re not able to fly to London Heathrow Airport in October, then January is your next best option. Flight prices from United States to London Heathrow Airport during January average around $568.
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 $638. The most expensive day to fly to London Heathrow Airport is Sunday, with ticket prices averaging around $676.
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 at noon. momondo users have found flights departing from United States to London Heathrow Airport at noon for as low as $586. 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 afternoon are often more expensive with an average ticket price of $701.
What is the cheapest United States to London Heathrow flight route?
Fly from Newark 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 $619 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 $553 on momondo.
What cabin class options are available on United States to London Heathrow flights?
There are 4 cabin classes available to choose from on United States to London Heathrow 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?
Icelandair and TAP AIR PORTUGAL are the most popular carriers operating from United States to London Heathrow
What airlines fly to London Heathrow Airport?
British Airways, Delta and United 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 42% 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 many flights depart from United States to London Heathrow Airport on average per day?
As of July 2025, there are 418 flights per day flying from United States to London Heathrow Airport. The most common time of day flights depart is 9:00PM, with 68% of flights taking off in the evening.
How many flights depart from United States to London Heathrow Airport on average per week?
2,929 flights are operational weekly from United States to London Heathrow Airport as of July 2025. The most popular departure day for this route is Tue, with 15% 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
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 July 2025, there are 24 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 777, representing 21.41% of all bookings. The subsequent popular models are Boeing 787-9 Dreamliner at 14.92%, Boeing 777-200/200ER at 12.86%, and Boeing 777-300ER at 11.39%.
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 $203 | Free Cancellation | Rating 7.3 1,413 reviews | |||
| PriceFrom $266 | Free Cancellation | Rating 6.8 7,193 reviews | |||
| PriceFrom $272 | Free Cancellation | Rating 7.2 2,920 reviews | |||
| PriceFrom $284 | Free Cancellation | Rating 7.2 47 reviews | |||
| PriceFrom $290 | Free Cancellation | Rating 7.5 1,652 reviews | |||
| PriceFrom $340 | Free Cancellation | Rating 7.5 1,467 reviews | |||
| PriceFrom $354 | Free Cancellation | Rating 7.1 9,680 reviews | |||
| PriceFrom $366 | Free Cancellation | Rating 7.8 1,370 reviews | |||
| PriceFrom $386 | Free Cancellation | Rating 7.0 102 reviews | |||
| PriceFrom $391 | Free Cancellation | Rating 7.3 2,910 reviews |
Traveling to a place near London?
Book flights to London if you plan to visit one of these locationsHounslow
Gatwick
Croydon
Luton
Slough
Dover
Dartford
Guildford
Stansted
Hayes
Milton Keynes
Salisbury
Swindon
Ilford
Colchester
Stratford-upon-Avon
Chelmsford
Canterbury
Watford
Richmond
Why use momondo?
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.
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