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

Return flights

21 Apr - 12 May	Wizz Air Malta
21 Apr - 05 May	Wizz Air Malta
27 Apr - 04 May	easyJet
09 Apr - 16 Apr	Wizz Air UK
21 Apr - 30 Apr	Wizz Air Malta
07 Apr - 16 Apr	easyJet
19 Apr - 26 Apr	Wizz Air Malta
18 Apr - 30 Apr	Wizz Air UK
06 Apr - 20 Apr	Wizz Air Malta
09 Apr - 19 Apr	easyJet
20 Apr - 30 Apr	easyJet
12 Apr - 19 Apr	easyJet
09 Apr - 27 Apr	easyJet
26 Apr - 09 May	Wizz Air Malta
11 Apr - 05 May	easyJet
10 Apr - 02 May	Wizz Air UK

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 945€

Return flights