Earn point on your loyalty program!arrow arc left

Cheap flights from Philadelphia (PHL) to London (LCY)

Know your dates, get live prices in seconds
airplane logo

pin logo

calendar
Departure
calendar backward
Return
airplane logo
1 Adults (11+)
0 Children (2~11)
0 Infants (0~2)
Save up to 31%
Book Flight + Hotel at the same time

How to find the cheapest flight from Philadelphia (PHL) to London (LCY)

How to find the cheapest flight from Philadelphia (PHL) to London (LCY)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from Philadelphia (PHL) to London (LCY)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from Philadelphia (PHL) to London (LCY)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.

Cheap flights from Philadelphia to London in April , May 2025

30 Apr - 08 May $ 874.00
PHL
Philadelphia
Aer Lingus
1 STOPS
LCY
London
LCY
London
Aer Lingus
1 STOPS
PHL
Philadelphia
Pick dates
29 Apr - 09 May $ 933.00
PHL
Philadelphia
Aer Lingus
1 STOPS
LCY
London
LCY
London
Aer Lingus
1 STOPS
PHL
Philadelphia
Pick dates
25 Apr - 10 May $ 1,942.00
PHL
Philadelphia
Aer Lingus
1 STOPS
LCY
London
LCY
London
Aer Lingus
1 STOPS
PHL
Philadelphia
Pick dates

Last minute flights from Philadelphia to London

23 Apr - 30 Apr $ 724.00
PHL
Philadelphia
KLM Royal Dutch Airlines
2 STOPS
LCY
London
LCY
London
KLM Royal Dutch Airlines
2 STOPS
PHL
Philadelphia
Pick dates
23 Apr - 30 Apr $ 725.00
PHL
Philadelphia
KLM Royal Dutch Airlines
2 STOPS
LCY
London
LCY
London
KLM Royal Dutch Airlines
2 STOPS
PHL
Philadelphia
Pick dates
24 Apr - 30 Apr $ 4,896.00
PHL
Philadelphia
United Airlines
1 STOPS
LCY
London
LCY
London
United Airlines
1 STOPS
PHL
Philadelphia
Pick dates

One-way flights to London from Philadelphia

5:35 PM - 4:00 PM
Lufthansa
1 Stops
17h 50m
PHL - LCY
$ 453
Kiwi
Pick dates
5:35 PM - 6:10 PM
Air Dolomiti
1 Stops
20h
PHL - LCY
$ 474
Kiwi
Pick dates
8:30 PM - 9:50 AM
Aer Lingus
1 Stops
9h 50m
PHL - LCY
$ 976
Kiwi
Pick dates

How to find the cheapest flight from Philadelphia (PHL) to London (LCY)

Related info for your journey
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from Philadelphia (PHL) to London (LCY)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from Philadelphia (PHL) to London (LCY)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.