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

Return flights

21 Apr - 08 May	Vueling Airlines
13 Apr - 21 Apr	Vueling Airlines
21 Apr - 04 May	Vueling Airlines
20 Apr - 06 May	Vueling Airlines
13 Apr - 23 Apr	Vueling Airlines
09 Apr - 27 Apr	Vueling Airlines
20 Apr - 07 May	Vueling Airlines
11 Apr - 26 Apr	Air Europa
07 Apr - 21 Apr	Vueling Airlines
21 Apr - 05 May	Vueling Airlines
09 Apr - 26 Apr	Air Europa
20 Apr - 05 May	Air Europa
01 Apr - 29 Apr	Vueling Airlines
10 Apr - 24 Apr	Air Europa
06 Apr - 13 Apr	Vueling Airlines
21 Apr - 07 May	Air Europa
21 Apr - 28 Apr	easyJet
20 Apr - 03 May	Air Europa
21 Apr - 03 May	Air Europa
15 Apr - 01 May	easyJet

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

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 April from 920€

Return flights