Cheapest one-way flights from Philadelphia to London in April from $278

Best time to book flights for Philadelphia (PHL) to London (LHR) flights at AirHint

AirHint found the following cheapest one-way flights from Philadelphia (PHL) to London (LHR) in April 2025 (see full year).

One-Way flights

16 Apr Frontier Airlines
10 Apr Frontier Airlines
18 Apr Spirit Airlines
10 Apr Iberia direct
12 Apr Virgin Atlantic
20 Apr Air Canada
27 Apr Air Canada
01 Apr British Airways direct
30 Apr British Airways direct
08 Apr American Airlines direct

Also check the deals for return flights from Philadelphia to London in April.

Skyscanner

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

Book a cheap hotel in London

Cheap car rent in London