AirHint found the following cheapest return flights from Newark (EWR) to London (LHR) in June 2025 (see full year).

Return flights

28 Jun - 30 Jun	Avianca
30 Jun - 21 Jul	Air Canada
26 Jun - 27 Jun	Lufthansa
25 Jun - 24 Jul	Air Canada
24 Jun - 16 Jul	Air Canada
24 Jun - 02 Jul	Air Canada
30 Jun - 08 Jul	Air Canada
24 Jun - 08 Jul	Air Canada
24 Jun - 01 Jul	Air Canada
24 Jun - 17 Jul	Air Canada
24 Jun - 30 Jun	Air Canada
30 Jun - 09 Jul	Air Canada
24 Jun - 28 Jun	Air Canada
25 Jun - 25 Jul	United
25 Jun - 28 Jun	Air Canada
25 Jun - 30 Jun	Air Canada
25 Jun - 29 Jun	Air Canada
24 Jun - 29 Jun	Air Canada
24 Jun - 25 Jun	United
26 Jun - 29 Jun	TAP

Also check the deals for one-way flights from Newark to London in June.

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 June from $532

Return flights