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

Return flights

17 Mar - 30 Mar	Avianca
18 Mar - 30 Mar	Avianca
15 Mar - 30 Mar	Avianca
09 Mar - 30 Mar	Avianca
16 Mar - 30 Mar	Avianca
17 Mar - 01 Apr	Avianca
18 Mar - 01 Apr	Avianca
16 Mar - 03 Apr	Avianca
11 Mar - 01 Apr	Avianca
07 Mar - 18 Mar	Lufthansa
10 Mar - 24 Mar	Lufthansa
04 Mar - 18 Mar	Lufthansa
03 Mar - 10 Mar	Lufthansa
27 Mar - 08 Apr	Lufthansa
10 Mar - 17 Mar	Avianca
24 Mar - 08 Apr	Lufthansa
25 Mar - 07 Apr	Lufthansa
30 Mar - 07 Apr	Lufthansa
26 Mar - 08 Apr	Lufthansa
30 Mar - 16 Apr	Lufthansa

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 778€

Return flights