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

Return flights

18 May - 24 May	TAP
10 May - 24 May	TAP
07 May - 11 May	TAP
11 May - 20 May	TAP
07 May - 18 May	easyJet
07 May - 12 May	Air Europa
31 May - 30 Jun	Vueling Airlines
13 May - 04 Jun	SWISS
11 May - 25 May	TAP
17 May - 22 May	easyJet
02 May - 08 May	easyJet
20 May - 11 Jun	easyJet
25 May - 31 May	TAP
19 May - 11 Jun	easyJet
26 May - 13 Jun	easyJet
26 May - 11 Jun	easyJet
26 May - 09 Jun	easyJet
29 May - 12 Jun	easyJet
26 May - 12 Jun	easyJet
26 May - 16 Jun	SWISS

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 958€

Return flights