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

Return flights

05 Mar - 19 Mar	TAP
14 Mar - 15 Mar	Air Canada
13 Mar - 15 Mar	Air Canada
11 Mar - 18 Mar	TAP
02 Mar - 16 Mar	TAP
09 Mar - 16 Mar	TAP
03 Mar - 10 Mar	TAP
12 Mar - 18 Mar	TAP
06 Mar - 13 Mar	TAP
08 Mar - 13 Mar	Air Canada
27 Mar - 12 Apr	Air Canada
27 Mar - 12 Apr	British Airways	direct
27 Mar - 04 Apr	Air Canada
21 Mar - 04 Apr	Austrian Airlines
21 Mar - 04 Apr	British Airways	direct
27 Mar - 04 Apr	British Airways	direct

Also check the deals for one-way flights from Newark 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 Newark to London in March from $365

Return flights