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

Return flights

13 Apr - 27 Apr	Ryanair
16 Apr - 23 Apr	Ryanair
29 Apr - 08 May	Ryanair
08 Apr - 23 Apr	Ryanair
23 Apr - 08 May	Ryanair
20 Apr - 28 Apr	Ryanair
06 Apr - 28 Apr	Ryanair
10 Apr - 27 Apr	Ryanair
28 Apr - 13 May	Ryanair
27 Apr - 07 May	Ryanair
27 Apr - 06 May	Ryanair
19 Apr - 24 Apr	Ryanair
10 Apr - 24 Apr	Ryanair
06 Apr - 26 Apr	Ryanair
16 Apr - 21 Apr	Ryanair
30 Apr - 07 May	Ryanair
19 Apr - 21 May	Ryanair
30 Apr - 14 May	Ryanair
21 Apr - 01 May	Ryanair
18 Apr - 25 May	Ryanair

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 $1085

Return flights