Q: What is the typical price of a round-trip flight between London and Philadelphia?

Prices are currently typical for flights on this route. Typical prices usually range from £438 to £607. The lowest price recently found on this route was £450.

Question 1

Which stopover airport has the shortest travel time from London to Philadelphia?

Accepted Answer

Flights connecting via Montreal (YUL) have the shortest average one-way travel time: 10h 06m.

Question 2

What is the cheapest London to Philadelphia flight route?

Accepted Answer

Fly from London Heathrow to Philadelphia for the best London - Philadelphia flight prices

Question 3

What cabin class options are available on London to Philadelphia flights?

Accepted Answer

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.

Question 4

How often are flights from London to Philadelphia delayed?

Accepted Answer

Historically, on average around 18% of flights between London and Philadelphia have experienced a delay on any given week. The average delay length over the past 12 months has been 175 minutes.

Question 5

What is the typical price of a round-trip flight between London and Philadelphia?

Accepted Answer

Prices are currently typical for flights on this route.Typical prices usually range from £438 to £607.
The lowest price recently found on this route was £450.

Question 6

Which stopover airport offers the lowest fares from London to Philadelphia?

Accepted Answer

Flights via Boston (BOS) offer the lowest average return price of £496.

Question 7

Can stopping save me money on London to Philadelphia flights?

Accepted Answer

You could potentially save up to 19% on your flight if you consider stops on a London to Philadelphia flight.

Question 8

What is the cheapest day to depart on your flight to Philadelphia?

Accepted Answer

Our data shows that Wednesday 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 £644.

Question 9

Which airport is the most popular for stopovers for flights between London and Philadelphia?

Accepted Answer

Dublin (DUB) was the most common stop: 74% of momondo users choosing one-stop flights on this route connected there.

Question 10

What day of the week experiences the fewest flight delays on this route?

Accepted Answer

Wednesday is statistically the day of the week that experiences the fewest delays on this flight route. Sunday has historically seen more delays on average compared to the rest of the week.

Question 11

What is the cheapest month to fly to Philadelphia?

Accepted Answer

If you aren’t able to travel during the month of January, then book flights to Philadelphia from London during February instead. Flights to Philadelphia in February, while not as cheap as those in January, still average around £483.

Question 12

What is the cheapest airline that flies from London to Philadelphia?

Accepted Answer

JetBlue, SWISS, and Lufthansa are the most popular carriers operating from London to Philadelphia

Question 13

Which stopover airport has the shortest connection time from London to Philadelphia?

Accepted Answer

Dublin (DUB) has the shortest average stopover time for this route: 2h 03m.

Question 14

What is the most punctual flight time for London to Philadelphia flights?

Accepted Answer

Generally, flights departing in the morning tend to experience fewer delays. Flights departing in the early afternoon have, in the past, seen delays more frequently in comparison.

Question 15

Which airlines fly to Philadelphia?

Accepted Answer

Virgin Atlantic, British Airways and Lufthansa are the top three most popular airlines that fly to Philadelphia from London according to our data. Virgin Atlantic is the first choice among our users, with 42% of people opting to fly with this airline when travelling to Philadelphia. Keep in mind that there are 22 different airlines that fly to Philadelphia on a routine basis, so you have a few additional options to choose from.

Question 16

Which airline has the best punctuality record on London to Philadelphia flights?

Accepted Answer

According to our data, British Airways have had the fewest delays on this route over the last 12 months, with about 16% of their flights experiencing any sort of delay.

Question 17

How many flights depart from London to Philadelphia on average per day?

Accepted Answer

10 flights are operational daily from London to Philadelphia as of January 2026. The most popular departure time for this route is 10:00, with 50% of flights per day taking off at midday.

Question 18

How many flights depart from London to Philadelphia on average per week?

Accepted Answer

70 flights are operational weekly from London to Philadelphia as of January 2026. The most popular departure day for this route is Mon, with 14% of flights per week taking off on this day.

Question 19

What is the cheapest time of day to depart on your flight to Philadelphia?

Accepted Answer

The cheapest time of day to fly to Philadelphia is at midday when flights can be purchased for as low as £606. In the morning is when there is more demand to fly to Philadelphia, so prices are often more expensive at around £623 per ticket.

Question 20

How far in advance should I book a flight to Philadelphia?

Accepted Answer

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 £562 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 £508 on momondo.

Question 21

How have London to Philadelphia flight prices changed over time?

Accepted Answer

As of January 2026, prices for London to Philadelphia flights are approximately 13% cheaper when compared to flights at the same time last year.

Question 22

When did momondo last update prices for flights from London to Philadelphia Airport?

Accepted Answer

Prices for flights from London to Philadelphia Airport are refreshed on a daily basis.

Question 23

How many operators does momondo search for flights from London to Philadelphia Airport?

Accepted Answer

As of January 2026, there are 9 operators available to choose from for flights from London to Philadelphia Airport.

Question 24

How old do you have to be to fly from London to Philadelphia Airport?

Accepted Answer

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.

Question 25

What documentation or ID do you need to fly to Philadelphia Airport?

Accepted Answer

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.

Best price found	£407
Fastest flight time	7h 55m
Direct flights	Every day
Airports in Philadelphia	1 airport

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom £302	Free Cancellation	Rating 7.4 9,164 reviews	Search United Airlines flights
Air Canada	PriceFrom £338	Free Cancellation	Rating 7.1 10,625 reviews	Search Air Canada flights
Lufthansa	PriceFrom £402	Free Cancellation	Rating 6.8 7,718 reviews	Search Lufthansa flights
JetBlue	PriceFrom £419	Free Cancellation	Rating 7.2 2,888 reviews	Search JetBlue flights
British Airways	PriceFrom £437	Free Cancellation	Rating 6.7 7,680 reviews	Search British Airways flights
Finnair	PriceFrom £443	Free Cancellation	Rating 7.6 1,349 reviews	Search Finnair flights
American Airlines	PriceFrom £452	Free Cancellation	Rating 7.2 11,137 reviews	Search American Airlines flights
Iberia	PriceFrom £454	Free Cancellation	Rating 7.0 3,087 reviews	Search Iberia flights
Aer Lingus	PriceFrom £464	Free Cancellation	Rating 7.2 1,435 reviews	Search Aer Lingus flights

Cheap flights from London to Philadelphia from £210

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 27/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names, great deals

Big names, great deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from London to Philadelphia

Cheap return flights

Cheap one-way flights

Cheap last-minute flights

Cheap direct flights

United Airlines flights from London to Philadelphia

Our best United Airlines deals on London to Philadelphia flight tickets

British Airways flights from London to Philadelphia

Our best British Airways deals on London to Philadelphia flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from London to Philadelphia that are best for you.

See travel insights to Philadelphia from

How to get the cheapest flight ticket from London to Philadelphia