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

Return flights

22 Apr - 06 May	Ryanair
26 Apr - 15 May	Ryanair
12 Apr - 26 Apr	Ryanair
08 Apr - 29 Apr	Ryanair
14 Apr - 24 Apr	Ryanair
09 Apr - 27 Apr	Ryanair
29 Apr - 13 May	Ryanair
09 Apr - 23 Apr	Ryanair
15 Apr - 28 Apr	Ryanair
10 Apr - 24 Apr	Ryanair
17 Apr - 26 Apr	Ryanair
24 Apr - 08 May	Ryanair
15 Apr - 22 Apr	Ryanair
13 Apr - 26 Apr	Ryanair
18 Apr - 02 May	Ryanair
27 Apr - 04 May	Ryanair
24 Apr - 09 May	Ryanair
01 Apr - 02 May	Ryanair
28 Apr - 03 May	Ryanair
18 Apr - 03 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.

Book a cheap hotel in Buenos Aires

Cheap car rent in Buenos Aires

Cheapest return flights from London to Buenos Aires in April from 904€

Return flights