Cheapest return flights from Philadelphia to London in March from $576

AirHint found the following cheapest return flights from Philadelphia (PHL) to London (LHR) in March 2026 (see full year).

Return flights

05 Mar - 12 Mar United
15 Mar - 22 Mar United
25 Mar - 05 Apr Lufthansa
24 Mar - 05 Apr United
26 Mar - 05 Apr Air Canada
05 Mar - 12 Mar British Airways direct
15 Mar - 22 Mar British Airways direct
24 Mar - 05 Apr Finnair direct
25 Mar - 05 Apr Finnair direct
26 Mar - 05 Apr Finnair direct

Also check the deals for one-way flights from Philadelphia to London in March.

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.

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