Cheapest return flights from London to Buenos Aires in April from $1420

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

Return flights

09 Apr - 18 Apr SWISS
23 Apr - 29 Apr SWISS
14 Apr - 29 Apr SWISS
07 Apr - 15 Apr SWISS
27 Apr - 07 May SWISS
19 Apr - 03 May SWISS
23 Apr - 02 May SWISS
07 Apr - 20 Apr Iberia
02 Apr - 23 Apr Iberia
03 Apr - 06 Apr Iberia
10 Apr - 02 May SWISS
30 Apr - 16 May SWISS
07 Apr - 16 Apr SWISS
16 Apr - 21 Apr SWISS
10 Apr - 25 Apr SWISS
17 Apr - 02 May SWISS

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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