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

Return flights

01 Mar - 19 Mar	Air Europa
09 Mar - 17 Mar	Air Europa
12 Mar - 15 Mar	Air Europa
12 Mar - 16 Mar	Air Europa
02 Mar - 08 Mar	Air Europa
06 Mar - 21 Mar	Air Europa
13 Mar - 29 Mar	Air Europa
02 Mar - 09 Mar	easyJet
03 Mar - 10 Mar	easyJet
06 Mar - 27 Mar	easyJet
24 Mar - 01 Apr	Air Europa
27 Mar - 15 Apr	Vueling Airlines
27 Mar - 17 Apr	Vueling Airlines
18 Mar - 04 Apr	Air Europa
29 Mar - 08 Apr	Vueling Airlines
23 Mar - 05 Apr	Vueling Airlines
18 Mar - 05 Apr	Air Europa
19 Mar - 09 Apr	Air Europa
30 Mar - 12 Apr	Vueling Airlines
04 Mar - 03 Apr	easyJet

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 918€

Return flights