Airlines Flying from London to Philadelphia

Compare prices, find the option that best suits your travel needs, and enjoy a comfortable journey with a trusted airline.

Flight deals from London to Philadelphia

We've found these cheap flights for you. You can book one-way or return flight tickets.

  • Round-trip
  • One way

Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

Flight Information from London to Philadelphia

Cheapest one-way flight price £219
Cheapest return ticket price £455
Off-season travel month May
Peak season for travel February
Flight distance 5,706.88km
Average flight time 7 hours 57 minutes
Popular airline Finnair

Find the best time to fly from London to Philadelphia

We monitor flight fares to help you find the best deals effortlessly

Cheapest flights
From price
Search
  • 18 25
  • Jun

    25 1
  • 1 8
  • 8 15
  • 15 22
  • 22 29
  • Jul

    29 6
  • 6 13
  • 13 20
  • 20 27
  • Aug

    27 3
  • 3 10
Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.

FAQ

  • When are flight tickets from London (LON) to Philadelphia (PHL) the cheapest?

    Airlines adjust prices for flights from London to Philadelphia based on the date and time of your booking. By analyzing data from all airlines, on Trip.com, you can find the cheapest flight prices on Tuesdays, Wednesdays, and Saturdays.
  • How much are flights from London (LON) to Philadelphia (PHL) cost?

    According to Trip.com's data, the lowest price is around £969.
  • How long is the flight from London (LON) to Philadelphia (PHL)?

    It takes about 7 hours 57 minutes to fly from London (LON) to Philadelphia (PHL).
  • What are the most popular airlines that fly from London (LON) to Philadelphia (PHL)?

    Airlines with flights from London (LON) to Philadelphia (PHL): Iberia, Finnair, American Airlines, Malaysia Airlines, Aer Lingus and British Airways.
  • How many airports in Philadelphia (PHL)?

    There are 2 airport(s) in Philadelphia (PHL): Philadelphia International Airport and Trenton Mercer Airport.

How to find a cheap flight from London to Philadelphia

Wait until the last minute and flight costs are often sky-high. Plan ahead, book the right way, and your savings can soar. We have loads of saving tips to help you find a cheap flight from London to Philadelphia. Book your flights at the right time and save more.
1
Be flexible with your travel dates to get the cheapest flight from London to Philadelphia.
Simply tap "Date" on the flight search bar to browse through the calendar and check out airfare from London to Philadelphia over the next 6 months in 2025. If you're planning to fly within the next three months, it looks like the most affordable option is on Mon, Jun 16, with one-way flights priced at just £359.
2
Compare cheap flight deals from London to Philadelphia across hundreds of airlines.
With our extensive search, you can compare prices from over 500 airlines to find the cheapest flight tickets from London to Philadelphia. The cheapest airline for this route is American Airlines.
3
Set up a Price Alert
By setting up a Price Alert for your journey from London to Philadelphia, you can easily keep an eye on ticket prices without having to check every day.
4
Don't miss out on cheap flight deals and promo codes from London to Philadelphia.
You can always find the latest offers through Trip.com Deals and Promo Codes for cheap flights. By signing up for a free membership, you'll get access to even more deals for your flights.
5
Book early or wait until the last minute.
It's usually best to book early. Flight tickets are often cheapest when they're first released, typically about a year before the departure date. So, have a look online as soon as the flights you're interested in become available. If you miss the cheapest time, you might still find some good deals as the departure date gets closer.
6
Search for flights on the go.
For the best travel flight booking experience, download the Trip.com app. You can search for cheap flights from London to Philadelphia and snag some exclusive deals just for you.

Flight from London to Philadelphia

Philadelphia, USA, a historic place with famous museums, parks and, pleasant climate, is the most sought-after travel destination by local and international tourists. It is a place where you can learn a lot about American history. Philadelphia is a tourist-friendly place with many budget-friendly tour packages that give you an enriching experience of the city. So, plan your next holiday to Philadelphia!

Tip: The best time to visit Philadelphia is from March to May when the climate will be pleasant, and the room rates will be moderate and during the spring season when the cherry blossoms in the city.

Getting to Philadelphia

Philadelphia International Airport serves the city of Philadelphia, and it is 12.5 miles to Downtown. United Airways operates direct flights to Philadelphia. London to Philadelphia flights typically take around 11 hours 55 minutes. United Airways offers cheap flights from London to Philadelphia. There are many connecting flights available by multiple airlines.

Tip: Book your tickets at least two months in advance to get discounted airfares and have a stress-free vacation.

What to see in Philadelphia?

The Independence visitor centre is an important place in Philadelphia as it serves tourists with vital information about the tourist places, timing and, entry ticket cost and other details. The Liberty Bell centre houses the famous fractured bronze bell, and it is considered as world’s symbol of freedom. Tourists can get a close look and 360-degree view of this famous bell. Yet another renowned place is the Philadelphia museum of art; it displays various forms of arts from different corners of the world. 

The Eastern State Penitentiary is a famous historic prison, and they organize day-and-night tours of this famous prison. The Valley Forge national park is quite famous for its vast and spectacular landscape, and it is an ideal spot for picnickers, bikers, or a casual stroll. The sugar house casino is a popular tourist spot in Philadelphia as it houses more than 100 table games, 28 poker table room and lots of other entertainment.  

For kids and families, there is the Philadelphia Zoo which has more than 1300 animals, most of which are rare and endangered. The Urban Air Adventure Park will make you come back to the place again as it has many adventure-filled activities like the sky ride coaster, adventure hub, climbing walls and, cafes. 

Tip: plan your trip during the Philadelphia Harvest festival which is held at the Peddler’s village which showcases their fresh and bountiful harvest.

Shop and Dine in Philadelphia:

The reading terminal market has delicious food, and it boasts of many multi cuisines restaurants serving delicious sandwiches, pastries and, cheeses. You can find restaurants, pubs, cafes and small eateries along this stretch. Philadelphia has quite a few shopping attractions, The shops at Liberty Place, Philadelphia Mills and, Fashion District Philadelphia, where you can find shops ranging from clothes, home decors and much more.

Tip: Chaddsford winery has exotic wines, so make sure you taste their famous apple-flavoured wines.

For budget travel, combine your London-Philadelphia flight booking with discount hotel reservations for great deals. Enjoy the very best of Philadelphia with Trip.com.