Cheap flights from the United States to London Heathrow Airport from £123
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 20/7. Fares are subject to change and may not be available on all flights or dates of travel.
Cheap flight deals from USA to Heathrow
Keep the following information in mind while searching for USA to Heathrow flight deals. Data was last updated 4 July 2025.
Find flight deals from USA to Heathrow
Cheapest flights from USA to HeathrowExplore the most affordable flight options available from USA to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 4 July 2025.
Explore the most affordable flight options available from USA to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 4 July 2025.
Cheapflights Fare Finder
Customise your flight search to find flights from USA to Heathrow that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 4 July 2025.
Use the filters below to find and compare flights from the United States to London Heathrow Airport that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
New YorkLondon
JFK - LHR
JFKLHR
New York John F Kennedy Intl
Wed 8/10
06:55-06:30
2 stops18h 35m
London Heathrow
Wed 15/10
06:50-13:00
1 stop11h 10m
New YorkLondon
JFK - LHR
JFKLHR
New York John F Kennedy Intl
Tue 4/11
22:00-17:30
1 stop14h 30m
London Heathrow
Tue 11/11
06:00-20:05
1 stop19h 05m
New YorkLondon
LGA - LHR
LGALHR
New York LaGuardia
Sat 2/8
10:30-06:30
2 stops15h 00m
London Heathrow
Sat 30/8
06:50-14:45
2 stops12h 55m
New YorkLondon
LGA - LHR
LGALHR
New York LaGuardia
Sat 26/7
10:15-06:30
1 stop15h 15m
London Heathrow
Mon 22/9
09:30-18:30
1 stop14h 00m
New YorkLondon
JFK - LHR
JFKLHR
New York John F Kennedy Intl
Thu 31/7
20:05-08:15
Nonstop7h 10m
London Heathrow
Thu 11/9
09:30-19:05
1 stop14h 35m
New YorkLondon
JFK - LHR
JFKLHR
New York John F Kennedy Intl
Thu 21/8
18:29-22:40
1 stop23h 11m
London Heathrow
Tue 26/8
07:40-13:25
1 stop10h 45m
New YorkLondon
JFK - LHR
JFKLHR
New York John F Kennedy Intl
Wed 10/9
14:59-07:40
1 stop11h 41m
London Heathrow
Sat 4/10
07:30-19:05
1 stop16h 35m
New YorkLondon
JFK - LHR
JFKLHR
New York John F Kennedy Intl
Mon 27/10
21:35-08:35
Nonstop7h 00m
London Heathrow
Sat 1/11
09:55-23:00
1 stop17h 05m
New YorkLondon
JFK - LHR
JFKLHR
New York John F Kennedy Intl
Wed 27/8
09:00-06:30
1 stop16h 30m
London Heathrow
Sun 7/9
08:45-16:35
1 stop12h 50m
New YorkLondon
LGA - LHR
LGALHR
New York LaGuardia
Wed 20/8
06:00-10:40
1 stop23h 40m
London Heathrow
Wed 3/9
14:05-08:02
1 stop22h 57m
Best time to book a flight from USA to Heathrow
Have a flexible travel schedule? Discover the best time to fly to Heathrow from USA with our price prediction graph.
Cheapflights Insights
Everything you need to know about your flight from the United States to London Heathrow Airport
What is the cheapest month to book a flight from USA to London Heathrow Airport?
Currently, January is the cheapest month in which you can book a flight from USA to London Heathrow Airport (average of £112). Flying from USA to London Heathrow Airport in August is currently the most expensive (average of £164). 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.
What is the cheapest time of day to fly from US to LHR?
Find hourly flight availability from USA to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 4 July 2025.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from USA to London Heathrow Airport as you normally would.
Weekly flight availability from USA to London Heathrow Airport
Explore weekly flight availability from USA to Heathrow. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 4 July 2025.
The most flights from US0 to LHR are scheduled on a Wednesday (58 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (34 on average).
Reviews of airlines servicing Heathrow
Get insights into the airlines that provide service to Heathrow. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Heathrow. Reviews last updated 4 July 2025.
Read reviews from past customers who have flown with Delta, KLM, andAustrian Airlines from the United States to London Heathrow Airport. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
Crew
Boarding
Overall
Entertainment
Food
Reviews
Kim,May 2025
PIH - SLC
Comfort
Crew
Boarding
Overall
Entertainment
Food
Reviews
Kim,May 2025
PIH - SLC
Comfort
Crew
Boarding
Overall
Entertainment
Food
Reviews
Kim,May 2025
PIH - SLC
Comfort
Crew
Boarding
Overall
Entertainment
Food
Reviews
Kim,May 2025
PIH - SLC
Comfort
Crew
Boarding
Overall
Entertainment
Food
Reviews
Kim,May 2025
PIH - SLC
Comfort
Crew
Boarding
Overall
Entertainment
Food
Reviews
Kim,May 2025
PIH - SLC
Related info for your journey
Find useful and relevant information for your journey from USA to Heathrow. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for USA to Heathrow
See prices for flight routes from nearby airports that may be better suited for you.
Top 10 airlines flying from USA to Heathrow
Discover the top 10 airlines that operate flights from USA to Heathrow. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 4 July 2025.
Fly with Cheapflights
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How does Cheapflights help users find flights from USA to Heathrow?
Cheapflights makes it easy to find USA to Heathrow flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.
Why should you use Cheapflights to find cheap flight tickets from USA to Heathrow?
It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from USA to Heathrow.
Can Cheapflights find flights from USA to Heathrow with no change fees?
Certainly. Search results for flights to Heathrow from USA shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.
Can Cheapflights notify me if prices for flights from USA to Heathrow become cheaper?
Of course! You can now track prices for flights from USA to Heathrow and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.