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Cheap flights from Philadelphia to London Heathrow

Compare Philadelphia to London Heathrow flight deals

Find the cheapest month or even day of the year to fly to London Heathrow

Book the best London Heathrow fare with no extra fees

Flight deals from Philadelphia to London Heathrow

Looking for a cheap last-minute deal or the best round-trip flight from Philadelphia to London Heathrow? Find the lowest prices on one-way and round-trip tickets right here.
London.C$913 per passenger.Departing Sun, Aug 11, returning Mon, Aug 19.Round-trip flight with Aer Lingus.Outbound indirect flight with Aer Lingus, departing from Philadelphia International on Sun, Aug 11, arriving in London Heathrow.Inbound indirect flight with Aer Lingus, departing from London Heathrow on Mon, Aug 19, arriving in Philadelphia International.Price includes taxes and charges.From C$913, select.
London.C$915 per passenger.Departing Wed, Sep 4, returning Wed, Sep 11.Round-trip flight with Aer Lingus.Outbound indirect flight with Aer Lingus, departing from Philadelphia International on Wed, Sep 4, arriving in London Heathrow.Inbound indirect flight with Aer Lingus, departing from London Heathrow on Wed, Sep 11, arriving in Philadelphia International.Price includes taxes and charges.From C$915, select.
London.C$915 per passenger.Departing Fri, Oct 4, returning Fri, Oct 11.Round-trip flight with Aer Lingus.Outbound indirect flight with Aer Lingus, departing from Philadelphia International on Fri, Oct 4, arriving in London Heathrow.Inbound indirect flight with Aer Lingus, departing from London Heathrow on Fri, Oct 11, arriving in Philadelphia International.Price includes taxes and charges.From C$915, select.
London.C$915 per passenger.Departing Tue, Sep 24, returning Tue, Oct 1.Round-trip flight with Aer Lingus.Outbound indirect flight with Aer Lingus, departing from Philadelphia International on Tue, Sep 24, arriving in London Heathrow.Inbound indirect flight with Aer Lingus, departing from London Heathrow on Tue, Oct 1, arriving in Philadelphia International.Price includes taxes and charges.From C$915, select.

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Find the cheapest month to fly from Philadelphia to London Heathrow

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Philadelphia to London Heathrow flights are currently cheapest in August.
Apr
Find prices
May
from C$978
Jun
from C$944
Jul
from C$1,155
Aug
from C$913
Sep
from C$915
Oct
from C$915
Nov
from C$1,289
Dec
from C$1,060
Jan
Find prices
Feb
from C$1,041
Mar
from C$1,374

Direct flights from Philadelphia to London Heathrow

Philadelphia to London Heathrow: Alternative routes

Compare routes from Philadelphia to London below. You may find an airport to fly into that's cheaper, faster, or easier than London Heathrow.

Philadelphia to London: Flight information

The things to know before you go.
Cheapest flight foundC$913
Cheapest month to flyAugust
Average flight time7 hrs, 2 mins
Most popular airlineIberia
Average flights per week110

Finding cheap flights from Philadelphia to London Heathrow: Frequently asked questions

The best price we found for a round-trip flight from Philadelphia to London Heathrow is C$914. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
7 hours and 2 minutes is the average flight time from Philadelphia to London Heathrow.
Iberia, American Airlines and Finnair fly direct from Philadelphia to London Heathrow.
There are 110 flights per week flying from Philadelphia to London Heathrow, as of April 2024.
The cheapest month to fly from Philadelphia to London Heathrow is usually August.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Philadelphia to London Heathrow Airport on Sunday, August 11, 2024.
Yes – the average flight time is 7 hours and 2 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to London Heathrow but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar, and it looks like the cheapest time to book a flight to London Heathrow is around 40 days in advance, so don’t leave your flight to the last minute.

How to find cheap flights to London Heathrow from Philadelphia

Looking for cheap tickets from Philadelphia to London Heathrow? Here are a few tips on how to secure the best flight price and make your journey as smooth as possible.

  • Simply hit "search." From Delta Air Lines to international carriers like Emirates, we compare all major airlines along with the most popular online travel agents to find the cheapest plane tickets from Philadelphia to London Heathrow. And with us, there are no hidden fees – what you see is what you pay.
  • Compare flight deals to London Heathrow from Philadelphia from over 1,000 providers. Then choose the cheapest plane tickets or fastest journeys.
  • Flex your dates to find the best Philadelphia–London Heathrow ticket prices. If you're flexible when it comes to your travel dates, use Skyscanner's "Whole month" tool to find the cheapest month, and even day to fly to London Heathrow from Philadelphia.
  • Set up a Price Alert. You can easily track the fare of your cheap Philadelphia–London Heathrow flights by creating an alert. Whenever prices go down or up, you'll get an email or push notification to help make sure you get the best possible flight deal.
  • Fly without stops. Only interested in direct flights between Philadelphia and London Heathrow? Make sure to tick "Direct flights only" when performing a search. If there are direct flights available on the route, these will appear in the results.
  • Find the cheapest Business Class flights from Philadelphia and London Heathrow. We scour the Internet for the best Business, Premium Economy and First Class flight fares to London Heathrow, too. Check the difference in price as you search – you might just stumble on a last-minute low fare. Note that not all cabin classes are available for every destination or airline.
  • Include nearby airports in your search. Widen your search for Philadelphia to London Heathrow flight deals by selecting the "add nearby airports" option. This will allow you to see flight prices for all the nearest airports at your departure point and your destination and could help you save the next time you travel.

    • Combine your flight to London Heathrow from Philadelphia with hotels and car rental

    Once you've secured your cheap flight ticket from Philadelphia to London Heathrow, discover the best prices and exclusive rates for hotels in London Heathrow or nearby. You can also compare hundreds of car rental companies at once so you get the best car rental price for your trip.


Plan the rest of your trip from Philadelphia to London

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.