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

Return flights

11 Apr - 18 Apr	Avianca
15 Apr - 22 Apr	Avianca
11 Apr - 25 Apr	Avianca
17 Apr - 28 Apr	Avianca
22 Apr - 27 Apr	Avianca
05 Apr - 18 Apr	Avianca
09 Apr - 27 Apr	Avianca
10 Apr - 27 Apr	Avianca
14 Apr - 29 Apr	Avianca
08 Apr - 22 Apr	Avianca
01 Apr - 31 May	Iberia

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 835€

Return flights