Cheap flights from the United States to London from $111
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 9/4. 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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0 bags
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Recent round-trip flight deals from the United States to London
These are some of the best round-trip flight deals from the United States to London that have been recently found on momondo from popular airlines, departing in the coming months.
Recent one-way flight deals from the United States to London
Flying one-way? These are some of the best deals recently discovered on momondo for flights from the United States to London.
Recent last minute flight deals from the United States to London
Planning a quick getaway from the United States to London? These are the last-minute flight deals available now.
Recent direct flight deals from the United States to London
If you prefer a non-stop journey, check out our latest direct flight deals to London, so you can enjoy a seamless trip without layovers.
Finnair flights from United States to London Heathrow Airport
Our best Finnair deals on United States to London Heathrow Airport flight tickets
Finnair![Finnair]()
May 14![Finnair]()
May 21
BOS7:40 pmBoston Logan Intl
6h 40m
LHR7:20 amLondon Heathrow
LHR4:20 pmLondon Heathrow
11h 29m
1 stop
BOS10:49 pmBoston Logan Intl
Finnair![Finnair]()
May 14![Finnair]()
May 21
BOS7:40 pmBoston Logan Intl
6h 40m
LHR7:20 amLondon Heathrow
LHR10:30 amLondon Heathrow
7h 20m
BOS12:50 pmBoston Logan Intl
Lufthansa flights from United States to London Heathrow Airport
Our best Lufthansa deals on United States to London Heathrow Airport flight tickets
Lufthansa![Lufthansa]()
May 9![Lufthansa]()
May 18
BOS6:00 amBoston Logan Intl
9h 40m
1 stop
LHR8:40 pmLondon Heathrow
LHR8:45 amLondon Heathrow
11h 40m
1 stop
BOS3:25 pmBoston Logan Intl
Lufthansa![Lufthansa]()
May 5![Lufthansa]()
May 11
EWR5:25 pmNewark
7h 30m
LHR5:55 amLondon Heathrow
LHR9:30 amLondon Heathrow
8h 10m
EWR12:40 pmNewark
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 $534. 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 $655. The most expensive day to fly to London Heathrow Airport is Sunday, with ticket prices averaging around $691.
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 $720.
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 18 weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around $620 when searching 18 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 $561 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?
Scandinavian Airlines, 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 41% 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 May 2025, there are 374 flights per day flying from United States to London Heathrow Airport. The most common time of day flights depart is 8:00PM, with 68% of flights taking off in the evening.
How many flights depart from United States to London Heathrow Airport on average per week?
2,622 flights are operational weekly from United States to London Heathrow Airport as of May 2025. The most popular departure day for this route is Wed, 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
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 May 2025, 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 777, representing 22.22% of all bookings. The subsequent popular models are Boeing 787-9 Dreamliner at 13.80%, Airbus A380-800 at 11.20%, and Boeing 777-300ER at 9.51%.
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 1,349 reviews | |||
| PriceFrom $272 | Free Cancellation | Rating 7.2 2,826 reviews | |||
| PriceFrom $284 | Free Cancellation | Rating 7.1 45 reviews | |||
| PriceFrom $290 | Free Cancellation | Rating 7.5 1,588 reviews | |||
| PriceFrom $291 | Free Cancellation | Rating 6.7 7,045 reviews | |||
| PriceFrom $340 | Free Cancellation | Rating 7.4 1,446 reviews | |||
| PriceFrom $366 | Free Cancellation | Rating 7.8 1,334 reviews | |||
| PriceFrom $371 | Free Cancellation | Rating 6.9 101 reviews | |||
| PriceFrom $391 | Free Cancellation | Rating 7.3 2,922 reviews | |||
| PriceFrom $407 | Free Cancellation | Rating 7.2 10,000 reviews |
Traveling to a place near London?
Book flights to London if you plan to visit one of these locationsGatwick
Hounslow
Croydon
Luton
Slough
Guildford
Dartford
Dover
Stansted
Hayes
Salisbury
Ilford
Milton Keynes
Canterbury
Colchester
Wembley
Swindon
Chelmsford
Richmond
Poole
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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