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

Return flights

05 May - 18 May	Avianca
19 May - 26 May	Avianca
25 May - 27 May	Avianca
07 May - 18 May	Avianca
13 May - 18 May	Avianca
04 May - 18 May	Avianca
03 May - 18 May	Avianca
05 May - 26 May	Avianca
18 May - 26 May	Avianca
06 May - 18 May	Avianca
13 May - 04 Jun	Avianca
26 May - 09 Jun	Avianca
01 May - 01 Jun	KLM
22 May - 07 Jun	Air France
26 May - 04 Jun	SWISS
08 May - 09 Jun	Lufthansa
27 May - 06 Jun	Air France
21 May - 03 Jun	Lufthansa
29 May - 04 Jun	Air France
30 May - 05 Jun	Lufthansa

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 740€

Return flights