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

Return flights

23 Aug - 24 Aug	Iberia
25 Aug - 17 Sep	TAP
25 Aug - 07 Sep	TAP
22 Aug - 24 Aug	Finnair
03 Aug - 03 Sep	TAP
04 Aug - 28 Aug	TAP
18 Aug - 28 Aug	TAP
04 Aug - 10 Sep	TAP
25 Aug - 03 Sep	TAP
01 Aug - 03 Aug	Iberia
17 Aug - 29 Aug	Icelandair
06 Aug - 27 Aug	TAP
15 Aug - 17 Aug	Finnair
22 Aug - 29 Aug	Aer Lingus
29 Aug - 31 Aug	Finnair
08 Aug - 13 Sep	Lufthansa
26 Aug - 19 Sep	Air Canada
07 Aug - 15 Sep	Lufthansa
22 Aug - 28 Sep	Finnair
17 Aug - 13 Sep	Finnair

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 321€

Return flights