Cheapest return flights from London to Buenos Aires in April from $1133

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

Return flights

01 Apr - 06 Apr Air Canada
16 Apr - 20 Apr Air Canada
06 Apr - 20 Apr Air Canada
16 Apr - 26 Apr LATAM Airlines Group
10 Apr - 24 Apr LATAM Airlines Group
02 Apr - 19 Apr LATAM Airlines Group
06 Apr - 13 Apr LATAM Airlines Group
01 Apr - 19 Apr LATAM Airlines Group
04 Apr - 18 Apr LATAM Airlines Group
10 Apr - 26 Apr Air Canada

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

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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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