Cheap flights from Philadelphia to London from $285
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Philadelphia to London departing on 7/9. 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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Air Canada flights from Philadelphia to London Heathrow Airport
Our best Air Canada deals on Philadelphia to London Heathrow Airport flight tickets
JetBlue flights from Philadelphia to London Heathrow Airport
Our best JetBlue deals on Philadelphia to London Heathrow Airport flight tickets
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How to get the cheapest flight ticket from Philadelphia to London Heathrow Airport
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 London Heathrow Airport?
The month of October is, on average, the cheapest month to fly to London Heathrow Airport from Philadelphia, with most prices found around $720. If you’re not able to fly to London Heathrow Airport in October, then January is your next best option. Flight prices from Philadelphia to London Heathrow Airport during January average around $721.
What is the cheapest day to depart on your flight to London Heathrow Airport?
Our data shows that Wednesday is the least expensive day to fly to London Heathrow Airport. Tickets to fly out on this day can be as low as $804. The most expensive day to fly to London Heathrow Airport is Saturday, with ticket prices averaging around $984.
What is the cheapest time of day to depart on your flight to London Heathrow Airport?
According to our data, the cheapest time of day to fly to London Heathrow Airport is at noon. momondo users have found flights departing from Philadelphia to London Heathrow Airport at noon for as low as $802. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights in the afternoon are often more expensive with an average ticket price of $888.
What is the cheapest Philadelphia to London Heathrow flight route?
Fly from Philadelphia to London Heathrow for the best Philadelphia - London Heathrow flight prices
How far in advance should I book a flight to London Heathrow Airport?
You are more likely to see cheaper flights to London Heathrow Airport from Philadelphia when booking 18 weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around $844 when searching 18 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London Heathrow Airport from Philadelphia for as low as $728 on momondo.
What cabin class options are available on Philadelphia to London Heathrow flights?
There are 3 cabin classes available to choose from on Philadelphia to London Heathrow 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 Philadelphia to London Heathrow Airport flights?
You could potentially save up to 16% on your flight if you consider stops on a Philadelphia to London Heathrow Airport flight.
How have Philadelphia to London Heathrow Airport flight prices changed over time?
As of June 2025, prices for Philadelphia to London Heathrow Airport flights are approximately 42% more expensive when compared to flights at the same time last year.
What is the cheapest airline that flies from Philadelphia to London Heathrow?
British Airways, JetBlue, and Air Canada are the most popular carriers operating from Philadelphia to London Heathrow
What airlines fly to London Heathrow Airport?
United Airlines, British Airways and Iberia are the top three most popular airlines that fly to London Heathrow Airport from Philadelphia according to our data. United Airlines is the first choice among our users, with 37% of people opting to fly with this airline when traveling to London Heathrow Airport. Keep in mind that there are 20 different airlines that fly to London Heathrow Airport on a routine basis, so you have a few additional options to choose from.
How many flights depart from Philadelphia to London Heathrow Airport on average per day?
As of June 2025, 15 flights take off from Philadelphia and land in London Heathrow Airport each day. The most common flight departure time for this route is 6:00PM, with 100% of daily flights taking off in the evening.
How many flights depart from Philadelphia to London Heathrow Airport on average per week?
As of June 2025, there are 105 flights per week flying from Philadelphia to London Heathrow Airport. The most common day of the week flights depart is Mon, with 14% of flights taking off on this day.
When to book flights from Philadelphia to London Heathrow Airport
Cheap Philadelphia to London Heathrow Airport (PHL to LHR) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Philadelphia to London Heathrow Airport
How far is Philadelphia to London Heathrow by plane?
Philadelphia and London Heathrow are 3526.0 mi apart from one another. Flights usually cover this in 6h 55m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from Philadelphia Airport to London Heathrow Airport?
Prices for flights from Philadelphia Airport to London Heathrow Airport refresh daily.
How many operators does momondo search for flights from Philadelphia Airport to London Heathrow Airport?
The number of operators available for flights from Philadelphia Airport to London Heathrow Airport is 7 as of June 2025.
How old do you have to be to fly from Philadelphia Airport to London Heathrow 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 Philadelphia Airport to London Heathrow Airport.
What documentation or ID do you need to fly to London Heathrow Airport?
The required travel and health documents for your London Heathrow 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 London Heathrow 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 Philadelphia to London Heathrow Airport?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Philadelphia to London Heathrow Airport is Boeing 787-9 Dreamliner (47.27% of total bookings). The next most popular plane models are Airbus A350-1000 (42.55%), Boeing 787-8 Dreamliner (4.08%), and Boeing 787 Dreamliner (3.44%).
What is the most popular airline from Philadelphia to London Heathrow Airport?
Based on momondo bookings for flights between Philadelphia and London Heathrow Airport, the leading airline is British Airways, making up 40% of the total bookings. Other popular airlines include Iberia with 25%, American Airlines with 18%, and Aer Lingus with 6%.
Best airlines flying from Philadelphia to London Heathrow Airport
Compare and see reviews for airlines that fly from Philadelphia to London Heathrow Airport with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $550 | Free Cancellation | Rating 7.3 2,925 reviews | |||
| PriceFrom $586 | Free Cancellation | Rating 7.1 1,117 reviews | |||
| PriceFrom $611 | Free Cancellation | Rating 7.0 2,776 reviews | |||
| PriceFrom $622 | Free Cancellation | Rating 6.6 7,008 reviews | |||
| PriceFrom $628 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $640 | Free Cancellation | Rating 7.6 1,290 reviews | |||
| PriceFrom $673 | Free Cancellation | Rating 7.4 8,790 reviews |
Finnair Flights From Philadelphia to London Heathrow Airport
Finnair flies from Philadelphia to London Heathrow Airport around 21 times per week, with 1,290 momondo users rating the airline 7.6/10. The cheapest Finnair deal from Philadelphia to London Heathrow Airport in the last 72 hours was $640 (round-trip), much lower than the average airfare cost of $797 for Finnair flights on this route.
American Airlines Flights From Philadelphia to London Heathrow Airport
The best American Airlines deal for Philadelphia to London Heathrow Airport flight tickets found on momondo in the last 72 hours was $628, round-trip. It should be noted that an average American Airlines flight deal for this route in this time was higher, at $862 round-trip. American Airlines operates 21 flights out of Philadelphia into London Heathrow Airport in an average week, so prices vary by time and availability. 10,000 American Airlines reviews by users on momondo have scored the airline at 7.2/10.
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Why should I use momondo to find a flight deal from Philadelphia to London?
It is quick and easy to find Philadelphia to London flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to London that suits you.
Can I find flights from Philadelphia to London with flexible booking policies on momondo?
Flights from Philadelphia to London 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 Philadelphia to London?
Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to London from Philadelphia.
I’m not ready to book a flight from Philadelphia to London right now. Can momondo alert me if prices change?
If you are not ready to book a flight from Philadelphia to London now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to London and let you know when they change.