Cheap Flights to London from the U.S
Cheap flights to London from the U.S. are available year-round, but prices can vary depending on the season and departure city. Travelers flying from major hubs like New York, Chicago, Los Angeles, and Atlanta can often find competitive fares when comparing airlines and flexible travel dates.
London remains one of the most popular European destinations for American travelers, with dozens of nonstop flights arriving daily at Heathrow (LHR).
Whether you’re planning a family vacation, a business trip, or your first visit to the UK, airfare prices can vary significantly depending on season, departure city, and travel dates. Use the search tool below to compare routes, check flexible travel options, and book smarter with transparent pricing — with no booking fees. You can also compare cheap flights worldwide. Explore more destinations: Find cheap flights to Europe from the U.S. →
Best Time to Book Flights to London from the U.S.
Flights from the United States to London are typically cheapest between January and March (excluding major holidays). Late fall, especially November, can also offer strong airfare deals before peak Christmas travel begins.
Peak summer travel (June through August) is the most expensive period due to tourism demand and school vacations. If you’re flexible, midweek departures from major U.S. hubs like JFK, LAX, or ORD often offer lower fares than weekend flights.
For the best pricing:
Book 6–10 weeks in advance
Compare multiple departure airports and nonstop flights to London to find better fares.
Avoid Thanksgiving and Christmas travel windows
If you’re considering another European destination, you may also want to explore our guide to cheap flights to Paris from the U.S.
Direct (Nonstop) Flights from the U.S. to London
Many major U.S. airports offer nonstop service to London, including:
New York (JFK & Newark)
Los Angeles (LAX)
Chicago (ORD)
Dallas (DFW)
Atlanta (ATL)
Boston (BOS)
Nonstop flights typically land at Heathrow (LHR), though some routes operate into Gatwick (LGW). Comparing both airports can sometimes result in lower airfare depending on your departure city.
London Airports: Heathrow vs Gatwick
Heathrow (LHR) is London’s largest and busiest airport, offering the most nonstop routes from major U.S. cities. It is located about 15 miles west of Central London and provides fast train connections via the Heathrow Express and London Underground.
Gatwick (LGW), located south of London, may offer lower fares on certain routes. While it has fewer nonstop options from the U.S., budget-conscious travelers sometimes find better deals flying into Gatwick. Comparing both airports before booking can help you secure the best overall price.
Top Things to Do in London
Planning your trip after booking cheap flights to London? The city offers world-famous landmarks, historic sites, river cruises, and guided experiences for every type of traveler.
Discover iconic landmarks, historic attractions, and unforgettable guided experiences. Book trusted tours through our carefully selected partners.
Tower of London Entry Ticket
Explore nearly 1,000 years of British history at the iconic Tower of London. See the Crown Jewels and discover royal secrets.
✔ Free cancellation on many options
Harry Potter Studio Tour
Step behind the scenes of the world-famous films and explore authentic sets, costumes, and props from the wizarding world.
✔ Free cancellation on many options
Thames River Sightseeing Cruise
Enjoy panoramic views of London’s skyline from the water. See Big Ben, Tower Bridge, and more with live or audio commentary.
✔ Free cancellation on many options
More Cheap Flight Destinations in Europe
Looking for other affordable European cities to visit?
See our complete guide to cheap flights to Europe from the U.S. for more airports and travel tips.
Frequently Asked Questions About Cheap Flights to London
How long is a flight from the U.S. to London?
Flight times vary depending on departure city and wind conditions. Nonstop flights from major U.S. cities like New York, Boston, and Chicago typically take between 6 and 8 hours. Flights from the West Coast, such as Los Angeles, usually take around 10 to 11 hours.
What is the cheapest month to fly to London?
January and February are often the cheapest months to fly to London, excluding holiday periods. Late November can also offer competitive fares before peak Christmas travel begins. Prices may also drop during limited-time airline sales.
Which London airport is best to fly into?
Heathrow (LHR) is London’s largest and most connected airport, offering the most nonstop routes from the United States. However, Gatwick (LGW) may sometimes offer lower fares depending on your departure city.
Are there nonstop flights from the U.S. to London?
Yes. Many major U.S. airports including JFK, Newark, LAX, Chicago O’Hare, Dallas, Atlanta, and Boston offer nonstop service to London.
How far in advance should I book flights to London?
For the best fares, booking 6–10 weeks before departure is typically recommended. Prices may rise significantly during summer and holiday travel seasons. Booking too early (more than 5–6 months ahead) does not always guarantee lower fares.
Ready to explore more routes? Visit our main flight search page to compare cheap flights worldwide.