Cheap Flights from Philadelphia (PHL) to London (LHR)

You can find one-way and return flights from PHL to LHR with Expedia. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see our cheapest fares first, and use the Price Tracking tool to receive alerts when PHL to LHR ticket fares go up or down.

The cheapest months to fly from Philadelphia, PA (PHL) to London (LHR) are typically during off-peak season when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you are able to. Use the calendar view in your search to see which months have low fares on this route.

There are 2 airlines offering direct flights from Philadelphia, PA (PHL-Philadelphia Intl.) to London (LHR-Heathrow). Here are the carriers:
* American Airlines operates 14 direct flights from Philadelphia, PA (PHL-Philadelphia Intl.) to London (LHR-Heathrow) every week.
* British Airways operates 7 direct flights from Philadelphia, PA (PHL-Philadelphia Intl.) to London (LHR-Heathrow) every week.

To find a cheap flight from Philadelphia, PA (PHL) to London (LHR), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.

The best airline to fly with from Philadelphia, PA (PHL-Philadelphia Intl.) to London (LHR-Heathrow) will differ from traveler to traveler. If you like to fly early, British Airways offers early morning flights. If price is the most important factor, American Airlines typically offers the lowest fares. American Airlines offers the most daily flights from Philadelphia, PA (PHL-Philadelphia Intl.) to London (LHR-Heathrow), which is great if flexibility is what you value most. The best carrier for this journey could also be the one you have a loyalty membership with, as flying with that airline or another airline within the same alliance could help you collect points or enjoy lounge access.

The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.

You'll find approximately 3 nonstop flights per day from Philadelphia International Airport (PHL) to London Heathrow (LHR). For even more choices, look at flights that include layovers, as there are around 145 connecting flights per day. Some common connection points include Logan International Airport (BOS), Pearson International Airport (YYZ), and O'Hare International Airport (ORD).

The earliest flight from Philadelphia International Airport (PHL) to London Heathrow (LHR) typically departs around 5:00 AM local time. This flight is operated by American Airlines. This is a seasonal service, active in December. An early departure like this can help you make the most of your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.

You'll typically find the most flights from Philadelphia International Airport (PHL) to London Heathrow (LHR) on a Thursday, with around 94 flights available. This gives you plenty of options for your travel plans. Major airlines on this route include American Airlines, Delta, and United. Thursday sees notably more flight options compared to other days of the week, making it a good day to consider if you're looking for more choices.

The most popular departure times for flights from Philadelphia Intl. (PHL) to Heathrow (LHR) are in the evening, from 6pm to 9pm. Many major carriers, including American Airlines, British Airways and Aer Lingus, offer flights during this window. Many travellers prefer these times because you can make the most of your day in Philadelphia before your evening flight, and you'll arrive in London in the morning, ready to start your day.

When flying from Philadelphia, PA (PHL-Philadelphia Intl.) to London (LHR-Heathrow), you have a few options for flight duration. A non-stop flight typically takes around 7 hours 18 minutes, covering a distance of approximately 5690 kilometres. If you opt for a one-stop flight, your journey will generally be longer, taking about 12 hours 18 minutes. Flights with two or more stops will extend your travel time further, usually to around 15 hours 30 minutes. Keep in mind that actual flight times can vary due to factors like wind patterns and air traffic.

You can fly business class or first class between PHL and LHR. Airlines that offer business class service on this route include:

• Aer Lingus
• British Airways
• Republic Airlines
• Air Canada
• JetBlue Airways
• Discover Airlines
• SAS
• United
• Delta
• American Airlines

First class cabins are available on United and American Airlines.

It's easy to earn miles on a Philadelphia, PA (PHL-Philadelphia Intl.) to London (LHR-Heathrow) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.

*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.

If you're planning to travel to London from Philadelphia Intl. (PHL), you can fly directly into Heathrow (LHR). Some flights may connect through major hubs like Logan Intl. (BOS), Frankfurt Intl. (FRA), or Ronald Reagan Washington National (DCA) before reaching London. Compare routes and airports on Expedia to find the best flight options for your travel plans.

Typically, booking a last minute flight from Philadelphia, PA (PHL-Philadelphia Intl.) to London (LHR-Heathrow) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.

Securing a Philadelphia, PA (PHL-Philadelphia Intl.) to London (LHR-Heathrow) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.

If you booked your Philadelphia, PA (PHL) to London (LHR) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.