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 2026

30 Apr - 07 May $ 1,404.00
PHL
Philadelphia
Spirit Airlines
2 STOPS
LCY
London
LCY
London
Spirit Airlines
3 STOPS
PHL
Philadelphia
Pick dates
28 Apr - 18 May $ 2,076.00
PHL
Philadelphia
Aer Lingus
1 STOPS
LCY
London
LCY
London
Aer Lingus
1 STOPS
PHL
Philadelphia
Pick dates
29 Apr - 10 May $ 2,536.00
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

28 Apr - 01 May $ 1,967.00
PHL
Philadelphia
Frontier Airlines
2 STOPS
LCY
London
LCY
London
Frontier Airlines
3 STOPS
PHL
Philadelphia
Pick dates
29 Apr - 01 May $ 2,974.00
PHL
Philadelphia
Aer Lingus
1 STOPS
LCY
London
LCY
London
Aer Lingus
1 STOPS
PHL
Philadelphia
Pick dates
28 Apr - 30 Apr $ 3,151.00
PHL
Philadelphia
Aer Lingus
1 STOPS
LCY
London
LCY
London
Aer Lingus
1 STOPS
PHL
Philadelphia
Pick dates

One-way flights to London from Philadelphia

9:29 AM - 8:45 AM
Virgin Atlantic Airways
2 Stops
18h 21m
PHL - LCY
$ 743
Kiwi
Pick dates
6:30 PM - 8:10 PM
Aer Lingus
1 Stops
22h 5m
PHL - LCY
$ 985
Kiwi
Pick dates
6:30 PM - 8:45 AM
Aer Lingus
1 Stops
10h 50m
PHL - LCY
$ 1,201
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.