Cheap flights from London Heathrow Airport to Philadelphia from $390
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London Heathrow Airport to Philadelphia departing on 10/5. 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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British Airways flights from London Heathrow Airport to Philadelphia
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Icelandair flights from London Heathrow Airport to Philadelphia
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How to get the cheapest flight ticket from London Heathrow Airport to Philadelphia
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
What is the cheapest month to fly to Philadelphia?
The cheapest month to fly to Philadelphia from London Heathrow Airport is in March. Flight prices, which tend to average around $635, are often lower during this time because this is during the off-season. The month of February is another great option to travel to Philadelphia, with average flight prices from London Heathrow Airport averaging around $668.
What is the cheapest day to depart on your flight to Philadelphia?
The cheapest day to depart from London Heathrow Airport to Philadelphia is on a Tuesday. Travelers who choose to depart for Philadelphia on a Tuesday will often find tickets for as low as $760. On the other hand, Friday is the most expensive day to depart from London Heathrow Airport because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $898.
What is the cheapest time of day to depart on your flight to Philadelphia?
According to our data, the cheapest time of day to fly to Philadelphia is in the evening. momondo users have found flights departing from London Heathrow Airport to Philadelphia in the evening for as low as $704. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In contrast, the most expensive time of day to depart to Philadelphia is in the morning when prices are around $829.
What is the cheapest London Heathrow to Philadelphia flight route?
Fly from London Heathrow to Philadelphia for the best London Heathrow - Philadelphia flight prices
How far in advance should I book a flight to Philadelphia?
You are more likely to see cheaper flights to Philadelphia from London Heathrow Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to Philadelphia for around $756 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Philadelphia from London Heathrow Airport for as low as $689 on momondo.
What cabin class options are available on London Heathrow to Philadelphia flights?
There are 4 cabin classes available to choose from on London Heathrow to Philadelphia flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
Can stopping save me money on London Heathrow Airport to Philadelphia flights?
No. A direct flight is the cheapest option for a flight between London Heathrow Airport to Philadelphia.
How have London Heathrow Airport to Philadelphia flight prices changed over time?
As of July 2025, prices for London Heathrow Airport to Philadelphia flights are approximately 14% more expensive when compared to flights at the same time last year.
What is the cheapest airline that flies from London Heathrow to Philadelphia?
Aer Lingus is the most popular carrier operating from London Heathrow to Philadelphia
What airlines fly to Philadelphia?
British Airways, United Airlines and Lufthansa are the top three most popular airlines that fly to Philadelphia from London Heathrow Airport 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 Philadelphia. Keep in mind that there are 12 different airlines that fly to Philadelphia on a routine basis, so you have a few additional options to choose from.
How many flights depart from London Heathrow Airport to Philadelphia on average per day?
14 flights are operational daily from London Heathrow Airport to Philadelphia as of July 2025. The most popular departure time for this route is 10:00AM, with 66% of flights per day taking off in the afternoon.
How many flights depart from London Heathrow Airport to Philadelphia on average per week?
As of July 2025, there are 100 flights per week flying from London Heathrow Airport to Philadelphia. The most common day of the week flights depart is Mon, with 15% of flights taking off on this day.
When to book flights from London Heathrow Airport to Philadelphia
Cheap London Heathrow Airport to Philadelphia (LHR to PHL) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from London Heathrow Airport to Philadelphia
Best Price Found | $390 |
|---|---|
Fastest flight time | 10h 08m |
Direct flights | Every day |
Airports in Philadelphia | 1 airport |
How far is London Heathrow to Philadelphia by plane?
The straight-line distance from London Heathrow to Philadelphia is 3526.0 mi. By plane, this route typically takes 10h 08m.
When did momondo last update prices for flights from London Heathrow Airport to Philadelphia Airport?
Prices for flights from London Heathrow Airport to Philadelphia Airport are updated daily.
How many operators does momondo search for flights from London Heathrow Airport to Philadelphia Airport?
As of July 2025, there are 5 operators available to choose from for flights from London Heathrow Airport to Philadelphia Airport.
How old do you have to be to fly from London Heathrow Airport to Philadelphia 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 London Heathrow Airport to Philadelphia Airport.
What documentation or ID do you need to fly to Philadelphia Airport?
The required travel and health documents for your Philadelphia Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Philadelphia Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from London Heathrow Airport to Philadelphia?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from London Heathrow Airport to Philadelphia is Airbus A350-1000 (59.46% of total bookings). The next most popular plane models are Airbus A319 (8.85%), Boeing 777 (5.18%), and Boeing 777-200/200ER (4.43%).
What is the most popular airline from London Heathrow Airport to Philadelphia?
Based on momondo bookings for flights between London Heathrow Airport and Philadelphia, the leading airline is British Airways, making up 54% of the total bookings. Other popular airlines include American Airlines with 25%, Iberia with 10%, and Aer Lingus with 7%.
Best airlines flying from London Heathrow Airport to Philadelphia
Compare and see reviews for airlines that fly from London Heathrow Airport to Philadelphia with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $559 | Free Cancellation | Rating 7.0 2,824 reviews | |||
| PriceFrom $596 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $599 | Free Cancellation | Rating 6.6 7,103 reviews | |||
| PriceFrom $648 | Free Cancellation | Rating 7.6 1,312 reviews | |||
| PriceFrom $670 | Free Cancellation | Rating 7.1 1,151 reviews |
Finnair Flights From London Heathrow Airport to Philadelphia
The lowest priced Finnair flight from London Heathrow Airport to Philadelphia from the last 72 hours was $648. Generally, Finnair has 20 flights on this route every week with an average price of $767. Finnair is rated 7.6/10 by our users.
American Airlines Flights From London Heathrow Airport to Philadelphia
American Airlines (7.2/10 from 10,000 reviews) operates around 20 flights from London Heathrow Airport to Philadelphia in any given week. The average American Airlines airfare for this route is around $788, with deals from around $596 rare but found on momondo. Referenced prices are for round-trip London Heathrow Airport to Philadelphia flight searches in the last 72 hours.
Traveling to a place near Philadelphia?
Book flights to Philadelphia if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from London to Philadelphia?
momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from London to Philadelphia. Millions of users trust and use momondo every year so you are in good hands.
Can I find flights from London to Philadelphia with flexible booking policies on momondo?
All flight searches from London to Philadelphia on momondo can be filtered to show those which offer flexible booking policies.
How can momondo help me find flights from London to Philadelphia?
momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from London to Philadelphia.
I’m not ready to book a flight from London to Philadelphia right now. Can momondo alert me if prices change?
Yes. momondo can track prices for London to Philadelphia flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.