Cheap flights from London to Philadelphia

from as little as £356

16 nights in Philadelphia, departing London Gatwick on 09 / Sep / 2025 with JetBlue (price found 22 hours ago)

Subject to availability, prices correct of the last 24 hours
Philadelphia

The London / Philadelphia route

All 5723 km of it

Cheap flight deals for this route

See what's hot at the moment

Philadelphia flight facts

What you need to know

Alternative flights from the UK to Philadelphia

Check out prices for other routes
from £521 pp
Find flights
from £501 pp
Find flights
from £557 pp
Find flights
from £628 pp
Find flights
from £356 pp
Find flights
from £412 pp
Find flights

Alternative flights from London to Philadelphia

You might find cheaper flights nearby
from £345 pp
Find flights
from £428 pp
Find flights
from £336 pp
Find flights
from £319 pp
Find flights
from £361 pp
Find flights
from £437 pp
Find flights
Philadelphia

Today alone, Netflights has searched over 8,073 flights. 09 / Sep / 2025 is currently the lowest priced day of the year to fly the London/Philadelphia route. There are around 1,303 flights on any given week from the UK to Philadelphia and the cheapest month to fly right now is September.

Not suitable? Try running another search or viewing all cheap flight deals.

Min / Max Temperature (°C)
LOWEST

-2 °C

AVG

14 °C

HIGHEST

30 °C

Rainfall (mm)
LOWEST

71 mm

AVG

98.1 mm

HIGHEST

123 mm

Key facts about Philadelphia

How to get cheap flights from London to Philadelphia

Tips and advice from our flight experts

Book cheap flights from London to Philadelphia with Netflights. We scan all 1,303 of the weekly flights going via Philadelphia, so that you can compare them in one place. If you can’t find what you’re looking for, simply adjust the filters to widen your search.

London Heathrow (LHR) is the most popular airport in this city for flights to Philadelphia, and the most popular airlines are Finnair, Lufthansa & British Airways. Both flight prices and accommodation rates fluctuate throughout the year, but searching by month will reveal the cheapest times to fly.

On average, the 5723 km flight to Philadelphia takes 11 hrs 45 mins. If you want a bargain, keep an eye out for flights with JetBlue, as they often have good deals. Or you could broaden your search by looking at flights to other airports in the USA to see if there are any cheaper options.

Today, we’ve scanned 8,073 flights, to help you see all the options for your trip to Philadelphia. Once you’ve chosen your flight, why not check out our deals on accommodation and car hire? You’ll find lots of hotels in the USA, including some close to the airport – perfect if you're arriving late or leaving early.

Other popular destinations near Philadelphia

Where other people are flying to

Context Id: 1392be1b-d75c-46f3-836f-24ddfe91fd8c