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

Return flights

06 Mar - 13 Mar	British Airways
02 Mar - 09 Mar	British Airways
01 Mar - 08 Mar	Delta
18 Mar - 25 Mar	Delta
17 Mar - 24 Mar	British Airways
16 Mar - 30 Mar	Air Canada
16 Mar - 30 Mar	British Airways	direct
22 Mar - 29 Mar	British Airways
12 Mar - 19 Mar	British Airways
23 Mar - 18 Apr	British Airways	direct
24 Mar - 18 Apr	British Airways
07 Mar - 14 Mar	British Airways
27 Mar - 03 Apr	British Airways
26 Mar - 04 Apr	Air France

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

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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Cheapest return flights from Pittsburgh to London in March from 529€

Return flights