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

Return flights

25 Mar - 11 Apr	JetSmart
23 Mar - 11 Apr	JetSmart
18 Mar - 12 Apr	Avianca
12 Mar - 22 Mar	Avianca
18 Mar - 01 Apr	Avianca
17 Mar - 31 Mar	JetSmart
03 Mar - 18 Mar	Avianca
31 Mar - 18 Apr	Avianca
03 Mar - 17 Mar	LATAM Airlines Group
18 Mar - 31 Mar	Avianca
31 Mar - 12 Apr	Avianca
24 Mar - 31 Mar	Avianca
03 Mar - 19 Mar	Avianca
12 Mar - 26 Mar	Avianca
19 Mar - 29 Mar	Aerolíneas Argentinas
17 Mar - 24 Mar	LATAM Airlines Group
20 Mar - 25 Apr	JetSmart
20 Mar - 17 Apr	JetSmart
27 Mar - 16 Apr	Flybondi
28 Mar - 12 Apr	LATAM Airlines Group

Also check the deals for one-way flights from Buenos Aires to London 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 Buenos Aires to London in March from 879€

Return flights