$147+ Cheap flights from the United States to London (LON)

Flight time to London can vary dramatically based on your departure city. From New York, expect a minimum flight time of seven hours. From Miami, the trip takes eight and a half hours, and from Los Angeles, it takes 10.5 hours. If you're traveling from Seattle, plan for approximately nine hours in the air.

Many major airlines fly directly from the United States to London, including United, Delta and American. Virgin Atlantic also makes the trip from New York, Los Angeles, Miami and Seattle. For more budget-friendly flights from New York and LA, try Norwegian Air.

If you're flying to London from New York, you can choose from more than 30 nonstop flights per day. From LA, choose from 10 or more daily flights, and from Miami, you can select from five different daily flights. Direct trips from Seattle are more limited, but there are always two trips per day.

Most flights from the United States to London land at Heathrow Airport, but if you're flying from New York or Los Angeles, you can also opt for routes to Gatwick Airport. From New York, you can also fly into London City Airport, but these flights are very limited.

The New York to London route tends to be the cheapest direct flight, thanks to the short duration and large carrier selection. If you're flying from the West Coast, you can also get great deals on nonstop flights from Los Angeles. For other locations, use Cheapflights to monitor prices and learn about special sales to get the best fare.

There are several airlines that offer nonstop flights from cities in the USA to London. United Airlines and Aer Lingus offer nonstop flights to London Heathrow from Chicago O' Hare International Airport. Delta Airlines, Finnair, Alaska Airlines, American Airlines, British Airways, and Iberia all offer service to London Heathrow from Los Angeles International Airport. When departing from John F. Kennedy International Airport you will find that Air France, American Airlines, British Airways, Delta Air Lines, Finnair, Iberia, JetBlue, KLM, and Virgin Atlantic all offer nonstop flights to London Heathrow.

If you will be departing the USA from Chicago O' Hare International Airport, there are some one-stop flights that offer a more economical means of getting to London. SAS offers a one-stop flight with a layover at Kastrup Copenhagen (CPH) and Iceland Air offers a one-stop flight with a layover at Reykjavik Keflavik International (KEF). Turkish Airlines has a one-stop flight with a layover at Istanbul (IST) and Aer Lingus has a one-stop flight with a layover at Dublin (DUB). All of these one-stop flights will add anywhere from three to six hours to your trip but they will save you money over the nonstop options. If you are traveling from either John F. Kennedy International Airport or Los Angeles International Airport the nonstop flights offered are the most cost-effective way to make the trip.

For citizens of the United States that will be traveling to London, you will need a valid passport and the passport needs to be valid for the duration of your stay in the United Kingdom. It is important to note that if you plan on traveling onward from London to other countries in Europe you will need at least six months remaining validity on your passport. Your passport must have at least one blank page for immigration officials in the United Kingdom. If you are traveling as a tourist from the United States and you do not plan on staying for more than 180 days in the United Kingdom you will not need a visa to travel.

The cheapest airline one-way is Norse Atlantic UK, with whom users have recently found tickets for as low as $147. However, be on the lookout for offers from TAP AIR PORTUGAL and Iberia, as they are both options that can get you from USA to London for a low price.

The most popular route from USA to London is New York John F Kennedy Intl - London Heathrow. You may also consider Newark - London Heathrow or New York John F Kennedy Intl - London Gatwick.

No one likes to see their flight delayed. When booking a flight from USA to London consider choosing KLM (89%), Air France (89%) or Delta (89%) as they are the most reliable in getting you off to your destination on time.

While on average a flight from USA to London is generally $3,370, our data shows the cheapest flight currently is $393. When looking at the most popular route, (New York John F Kennedy Intl - London Heathrow), you can expect to pay $389 for that flight.

Yes. In addition to deals on USA to London flights, Cheapflights offers vacation packages that include both flights and hotel.

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from USA to London.

Yes. Cheapflights offers flight deals from USA to London by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

Currently, November is the cheapest month in which you can book a flight from USA to London (average of $661). Flying from USA to London in June is currently the most expensive (average of $1,095). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

There is a wide variety of flights to London from the United States. Nonetheless, there are a few airlines you can choose from that have reduced emissions or have an ongoing sustainability program to lower their environmental impact. Virgin Atlantic, for instance, has direct flights from cities in the United States like New York and Miami. This airline, due to the type of aircrafts flown and fuel efficiency, is considered to have fewer carbon emissions than other airlines flying the same route to London. Another eco-friendly airline is British Airways who are responsible for the majority of the trips to London from the United States. They offer direct flights as well as having a program in place to achieve net zero emissions by 2050.

Sustainable travel is something every passenger can help out with and play their part. When looking to book your flight to London, look for direct flights from cities in the United States. Direct flights have less take-offs and landings when it’s proven that airplanes emit more carbon dioxide. Try looking for airlines with sustainability programs or ones using newer airplanes. Airlines have started putting newer engines with better technology in the aircrafts. These engines are more fuel efficient, reducing the emissions per flight. Avoid the bottled water onboard. If possible bring your own reusable bottle for less plastic waste. Please stick to the airplane’s weight restrictions, and if possible, pack lighter. The less the plane weighs, the less fuel it’ll consume en route to London.