Cheapest return flights from London to Buenos Aires in May from $1299

AirHint found the following cheapest return flights from London (LCY) to Buenos Aires (AEP) in May 2026 (see full year).

Return flights

08 May - 09 Jun SWISS
14 May - 24 May SWISS
26 May - 04 Jun SWISS
07 May - 20 May SWISS
04 May - 14 May SWISS
04 May - 13 May SWISS
18 May - 27 May SWISS
05 May - 23 May Iberia
08 May - 18 May SWISS
24 May - 02 Jun SWISS
12 May - 21 May SWISS
28 May - 06 Jun SWISS
18 May - 29 May Iberia
13 May - 20 May SWISS
21 May - 11 Jun Iberia

Also check the deals for one-way flights from London to Buenos Aires in May.

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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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