AirHint found the following cheapest return flights from New York (NYC) to London (LTN) in August 2025 (see full year).

Return flights

19 Aug - 27 Aug	Air Canada
18 Aug - 27 Aug	Aer Lingus
29 Aug - 04 Sep	Aer Lingus
19 Aug - 26 Aug	Air Canada
20 Aug - 27 Aug	Aer Lingus
28 Aug - 08 Sep	Aer Lingus
10 Aug - 17 Aug	Air Canada
29 Aug - 05 Sep	Aer Lingus
11 Aug - 17 Sep	Norse Atlantic Airways
15 Aug - 20 Aug	Air Canada
27 Aug - 07 Sep	Aer Lingus
06 Aug - 13 Aug	Aer Lingus
15 Aug - 29 Aug	Aer Lingus
15 Aug - 17 Aug	Air Canada
25 Aug - 02 Sep	SWISS
26 Aug - 17 Sep	Norse Atlantic Airways
06 Aug - 27 Aug	Norse Atlantic Airways
14 Aug - 13 Sep	Norse Atlantic Airways
28 Aug - 07 Sep	Icelandair
26 Aug - 10 Sep	SWISS

Also check the deals for one-way flights from New York to London in August.

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 New York to London in August from 379€

Return flights