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

Return flights

09 Mar - 18 Mar	TAP
30 Mar - 13 Apr	TAP
23 Mar - 18 Apr	TAP
11 Mar - 18 Mar	TAP
10 Mar - 17 Mar	TAP
03 Mar - 10 Mar	TAP
03 Mar - 16 Mar	TAP
27 Mar - 29 Mar	Air Canada
18 Mar - 24 Mar	TAP
02 Mar - 08 Mar	TAP
08 Mar - 18 Mar	TAP
17 Mar - 18 Apr	TAP
25 Mar - 05 Apr	TAP
24 Mar - 18 Apr	TAP
25 Mar - 18 Apr	TAP
29 Mar - 12 Apr	TAP
03 Mar - 08 Mar	British Airways	direct
30 Mar - 13 Apr	British Airways	direct
17 Mar - 18 Apr	British Airways	direct
18 Mar - 18 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 $389

Return flights