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

Return flights

08 Apr - 15 Apr	Avianca
06 Apr - 16 Apr	Avianca
22 Apr - 27 Apr	Air Canada
12 Apr - 21 Apr	Avianca
23 Apr - 11 May	Avianca
30 Apr - 11 May	Avianca
09 Apr - 27 Apr	Air Canada
06 Apr - 20 Apr	Air Canada
10 Apr - 27 Apr	Air Canada
02 Apr - 06 Apr	Air Canada
01 Apr - 12 Apr	Air Europa
02 Apr - 19 Apr	Air Canada

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 850€

Return flights