Cheap flights from London to Philadelphia from £180
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 to Philadelphia departing on 26/8. 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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JetBlue flights from London to Philadelphia
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Finnair flights from London to Philadelphia
Our best Finnair deals on London to Philadelphia flight tickets
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How to get the cheapest flight ticket from London 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 typical price of a round-trip flight between London and Philadelphia?
What is the cheapest month to fly to Philadelphia?
If you aren’t able to travel during the month of February, then book flights to Philadelphia from London during September instead. Flights to Philadelphia in September, while not as cheap as those in February, still average around £492.
What is the cheapest day to depart on your flight to Philadelphia?
Our data shows that Tuesday is the least expensive day to fly to Philadelphia. Tickets to fly out on this day can be as low as £596. On the other hand, Sunday is the most expensive day to depart from London because it is more convenient for both business and leisure travellers. As a result, prices tend to be around £649.
What is the cheapest time of day to depart on your flight to Philadelphia?
The cheapest time of day to fly to Philadelphia is in the afternoon when flights can be purchased for as low as £490. In the morning is when there is more demand to fly to Philadelphia, so prices are often more expensive at around £625 per ticket.
What is the cheapest London to Philadelphia flight route?
Fly from London Heathrow to Philadelphia for the best London - 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 when booking weeks ahead of your departure date. In general, you can expect to find flights to Philadelphia for around £550 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Philadelphia from London for as low as £502 on momondo.
What cabin class options are available on London to Philadelphia flights?
There are 3 cabin classes available to choose from on London 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 to Philadelphia flights?
No. A direct flight is the cheapest option for a flight between London to Philadelphia.
How have London to Philadelphia flight prices changed over time?
As of June 2025, prices for London to Philadelphia flights are approximately 4% more expensive when compared to flights at the same time last year.
What is the cheapest airline that flies from London to Philadelphia?
Aer Lingus is the most popular carrier operating from London to Philadelphia
Which airlines fly to Philadelphia?
British Airways, Lufthansa and Finnair are the top three most popular airlines that fly to Philadelphia from London according to our data. British Airways is the first choice among our users, with 48% of people opting to fly with this airline when travelling to Philadelphia. Keep in mind that there are 18 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 to Philadelphia on average per day?
14 flights are operational daily from London to Philadelphia as of June 2025. The most popular departure time for this route is 10:00, with 66% of flights per day taking off in the afternoon.
How many flights depart from London to Philadelphia on average per week?
100 flights are operational weekly from London to Philadelphia as of June 2025. The most popular departure day for this route is Mon, with 15% of flights per week taking off on this day.
When to book flights from London to Philadelphia
Cheap London to Philadelphia (LON to PHL) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from London to Philadelphia
Best price found | £180 |
|---|---|
Fastest flight time | 7h 55m |
Direct flights | Every day |
Airports in Philadelphia | 1 airport |
How far is London to Philadelphia by plane?
London and Philadelphia are 3538.9 mi apart from one another. 7h 55m is a normal flight duration for this route.
When did momondo last update prices for flights from London to Philadelphia Airport?
Prices for flights from London to Philadelphia Airport are refreshed on a daily basis.
How many operators does momondo search for flights from London to Philadelphia Airport?
As of June 2025, there are 11 operators available to choose from for flights from London to Philadelphia Airport.
How old do you have to be to fly from London to Philadelphia Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from London to Philadelphia Airport.
What documentation or ID do you need to fly to Philadelphia Airport?
The travel and health documents you'll need for your trip to Philadelphia Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Philadelphia Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from London to Philadelphia?
momondo data reveals that the most frequently booked plane model on the route from London to Philadelphia is Airbus A350-1000, representing 58.74% of all bookings. The subsequent popular models are Airbus A319 at 9.20%, Boeing 777 at 5.35%, and Boeing 777-200/200ER at 4.87%.
What is the most popular airline from London to Philadelphia?
Based on momondo bookings for this flight route, the most popular airline on flight routes from London to Philadelphia is British Airways (62% of total bookings). The next most popular airlines are Finnair (17%), Aer Lingus (5%), and Iberia (5%).
Best airlines flying from London to Philadelphia
Compare and see reviews for airlines that fly from London to Philadelphia with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom £295 | Free Cancellation | Rating 7.4 8,838 reviews | |||
| PriceFrom £328 | Free Cancellation | Rating 7.0 507 reviews | |||
| PriceFrom £330 | Free Cancellation | Rating 7.1 9,637 reviews | |||
| PriceFrom £347 | Free Cancellation | Rating 7.3 2,921 reviews | |||
| PriceFrom £403 | Free Cancellation | Rating 6.8 7,191 reviews | |||
| PriceFrom £423 | Free Cancellation | Rating 6.6 7,067 reviews | |||
| PriceFrom £434 | Free Cancellation | Rating 7.6 1,298 reviews | |||
| PriceFrom £444 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom £453 | Free Cancellation | Rating 7.4 654 reviews | |||
| PriceFrom £454 | Free Cancellation | Rating 7.1 1,133 reviews |
Finnair Flights From London to Philadelphia
Finnair flies from London to Philadelphia around 21 times per week, with 1,298 momondo users rating the airline 7.6/10. The cheapest Finnair deal from London to Philadelphia in the last 72 hours was £596 (round-trip), much lower than the average airfare cost of £763 for Finnair flights on this route.
American Airlines Flights From London to Philadelphia
Another popular option for London to Philadelphia flights is American Airlines (7.2/10, 10,000 ratings). American Airlines flies from London to Philadelphia around 21 times per week, with deals starting from £609 round-trip and rising to an average price of around £791.
Travelling 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?
Flights from London to Philadelphia with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.
How can momondo help me find flights from London to Philadelphia?
momondo provides multiple filters to help you find the best flight to Philadelphia from London. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.
I’m not ready to book a flight from London to Philadelphia right now. Can momondo alert me if prices change?
If you are simply researching potential flights to Philadelphia, momondo offers a useful price alert feature which will track prices for flights to Philadelphia from London and alert you when they change.