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

Return flights

14 Mar - 31 Mar	Vueling Airlines
20 Mar - 31 Mar	Air Europa
21 Mar - 07 Apr	Vueling Airlines
15 Mar - 29 Mar	Air Europa
24 Mar - 14 Apr	Air Europa
15 Mar - 21 Mar	Air Europa
24 Mar - 01 Apr	Air Europa
09 Mar - 23 Mar	Vueling Airlines
27 Mar - 14 Apr	Vueling Airlines
28 Mar - 07 Apr	Vueling Airlines
02 Mar - 19 Mar	Vueling Airlines
21 Mar - 28 Mar	Vueling Airlines
02 Mar - 17 Mar	easyJet
10 Mar - 24 Mar	easyJet
27 Mar - 13 Apr	Vueling Airlines
27 Mar - 06 Apr	Vueling Airlines
27 Mar - 03 Apr	Vueling Airlines
08 Mar - 14 Mar	Air Europa
26 Mar - 10 Apr	Vueling Airlines
21 Mar - 05 Apr	Vueling Airlines

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 932€

Return flights