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

Return flights

07 May - 13 May	TAP
04 May - 20 May	Vueling Airlines
04 May - 17 May	Vueling Airlines
09 May - 20 May	Vueling Airlines
14 May - 04 Jun	SWISS
03 May - 16 May	Royal Air Maroc
21 May - 01 Jun	SWISS
09 May - 30 May	Vueling Airlines
02 May - 17 May	Air Europa
26 May - 26 Jun	Air Europa
02 May - 12 May	Vueling Airlines
01 May - 04 May	Air Europa
05 May - 18 May	easyJet
23 May - 01 Jun	SWISS
22 May - 06 Jun	easyJet
20 May - 26 Jun	easyJet
22 May - 01 Jun	easyJet
30 May - 07 Jun	easyJet

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 971€

Return flights