AirHint found the following cheapest return flights from London (LCY) to New York (JFK) in May 2026 (see full year).

Return flights

07 May - 12 May	SWISS
11 May - 23 May	KLM
07 May - 11 May	SWISS
01 May - 04 May	SWISS
18 May - 22 May	KLM
02 May - 06 May	SWISS
02 May - 07 May	SWISS
15 May - 19 May	SWISS
11 May - 16 May	British Airways
01 May - 10 May	SWISS
21 May - 12 Jun	British Airways
27 May - 05 Jun	British Airways
21 May - 05 Jun	British Airways
18 May - 05 Jun	British Airways
28 May - 07 Jun	British Airways
27 May - 07 Jun	British Airways
29 May - 05 Jun	British Airways
28 May - 05 Jun	British Airways
21 May - 01 Jun	British Airways
26 May - 07 Jun	British Airways

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

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 London to New York in May from 442€

Return flights