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

Return flights

09 Mar - 17 Mar	Avianca
10 Mar - 25 Mar	Avianca
16 Mar - 24 Mar	Avianca
09 Mar - 19 Mar	Avianca
16 Mar - 19 Mar	Avianca
18 Mar - 24 Mar	Avianca
11 Mar - 18 Mar	Avianca
08 Mar - 16 Mar	Avianca
11 Mar - 25 Mar	Avianca
09 Mar - 16 Mar	Avianca
16 Mar - 02 Apr	Avianca
11 Mar - 02 Apr	Avianca
18 Mar - 02 Apr	Avianca
23 Mar - 28 Apr	SWISS
11 Mar - 15 Apr	Avianca
11 Mar - 14 Apr	Avianca
16 Mar - 07 Apr	Avianca
15 Mar - 03 Apr	Avianca
18 Mar - 07 Apr	Avianca
15 Mar - 07 Apr	Avianca

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 697€

Return flights