Cheapest return flights from New York to London in September from $450

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

Return flights

21 Sep - 30 Sep Iberia
20 Sep - 25 Sep Iberia
17 Sep - 24 Sep Finnair
18 Sep - 22 Sep Iberia
16 Sep - 29 Sep Iberia
08 Sep - 17 Sep Iberia
21 Sep - 26 Sep Finnair
15 Sep - 24 Sep Air Europa
02 Sep - 09 Sep Air Canada
03 Sep - 07 Sep Aer Lingus
11 Sep - 01 Oct Iberia
11 Sep - 02 Oct Iberia
01 Sep - 01 Oct Iberia
19 Sep - 01 Oct Aer Lingus
29 Sep - 14 Oct Iberia

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

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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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