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

Return flights

24 Mar - 31 Mar	Delta
03 Mar - 03 Apr	Virgin Atlantic
25 Mar - 01 Apr	Delta
06 Mar - 06 Apr	Virgin Atlantic
04 Mar - 25 Mar	Delta
09 Mar - 20 Mar	KLM
03 Mar - 09 Mar	Air Canada
06 Mar - 13 Mar	Lufthansa
23 Mar - 30 Mar	American Airlines
04 Mar - 04 Apr	Air France
13 Mar - 18 Mar	United
14 Mar - 20 Mar	United
17 Mar - 23 Mar	Air France
09 Mar - 20 Mar	British Airways	direct
19 Mar - 06 Apr	United
19 Mar - 05 Apr	Air Canada

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 565€

Return flights