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

Return flights

06 Apr - 16 Apr	Avianca
08 Apr - 15 Apr	Air Canada
06 Apr - 20 Apr	Air Canada
10 Apr - 27 Apr	Avianca
22 Apr - 27 Apr	Avianca
23 Apr - 11 May	Air France
30 Apr - 11 May	Air France
02 Apr - 06 Apr	Lufthansa
02 Apr - 20 Apr	Lufthansa
16 Apr - 23 Apr	Lufthansa
12 Apr - 21 Apr	Air France
03 Apr - 19 Apr	Air France

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 $1049

Return flights