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

Return flights

01 Mar - 09 Mar	Air Canada
11 Mar - 19 Mar	Air Canada
20 Mar - 28 Mar	Air Canada
16 Mar - 23 Mar	Aer Lingus
20 Mar - 25 Mar	Aer Lingus
05 Mar - 10 Mar	Aer Lingus
20 Mar - 24 Mar	Aer Lingus
10 Mar - 17 Mar	Air Canada
27 Mar - 31 Mar	Air Canada
12 Mar - 17 Mar	Air Canada
23 Mar - 15 Apr	TAP
17 Mar - 18 Apr	TAP
18 Mar - 18 Apr	TAP
24 Mar - 13 Apr	TAP
31 Mar - 30 Apr	Spirit Airlines
23 Mar - 07 Apr	TAP
30 Mar - 30 Apr	Spirit Airlines
30 Mar - 03 Apr	Aer Lingus
27 Mar - 06 Apr	Spirit Airlines
29 Mar - 14 Apr	Spirit Airlines

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 $409

Return flights