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

Return flights

19 May - 09 Jun	British Airways
04 May - 13 May	Avianca
18 May - 27 May	Avianca
12 May - 21 May	Avianca
14 May - 23 May	Avianca
06 May - 16 May	Avianca
12 May - 22 May	Avianca
18 May - 28 May	Avianca
26 May - 04 Jun	Avianca
13 May - 10 Jun	Turkish Airlines
12 May - 20 May	Air Canada
06 May - 20 May	Air Canada
28 May - 07 Jun	Turkish Airlines
13 May - 25 May	Air Canada
28 May - 06 Jun	Turkish Airlines
22 May - 01 Jun	British Airways

Also check the deals for one-way flights from London to Buenos Aires 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 Buenos Aires in May from $939

Return flights