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

Return flights

03 Mar - 19 Mar	Ryanair
06 Mar - 17 Mar	Ryanair
03 Mar - 17 Mar	Ryanair
03 Mar - 23 Mar	Ryanair
03 Mar - 10 Mar	Ryanair
03 Mar - 16 Mar	Ryanair
06 Mar - 20 Mar	Ryanair
02 Mar - 16 Mar	Ryanair
24 Mar - 08 Apr	Ryanair
07 Mar - 22 Mar	Ryanair
08 Mar - 17 Mar	Jet2
24 Mar - 23 Apr	Ryanair
12 Mar - 08 Apr	Ryanair
24 Mar - 10 Apr	Ryanair
28 Mar - 07 Apr	Ryanair
30 Mar - 13 Apr	Ryanair
25 Mar - 08 Apr	Ryanair
23 Mar - 28 Apr	Ryanair
24 Mar - 02 Apr	Ryanair
27 Mar - 11 Apr	Ryanair

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

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 March from $987

Return flights