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

Return flights

08 Mar - 19 Mar	Avianca
03 Mar - 19 Mar	Avianca
18 Mar - 27 Mar	Avianca
04 Mar - 16 Mar	Avianca
05 Mar - 18 Mar	Avianca
03 Mar - 31 Mar	Avianca
03 Mar - 10 Mar	Avianca
07 Mar - 25 Mar	Avianca
11 Mar - 25 Mar	Avianca
18 Mar - 28 Mar	Avianca
17 Mar - 01 Apr	Avianca
16 Mar - 02 Apr	Avianca
17 Mar - 02 Apr	Avianca
16 Mar - 01 Apr	Avianca
18 Mar - 01 Apr	Avianca
18 Mar - 07 Apr	Avianca
18 Mar - 04 Apr	ITA Airways
21 Mar - 04 Apr	Ryanair
19 Mar - 30 Apr	Air Canada
23 Mar - 04 Apr	ITA Airways

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 800€

Return flights