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

Return flights

05 Mar - 27 Mar	easyJet
24 Mar - 16 Apr	easyJet
16 Mar - 22 Mar	easyJet
10 Mar - 20 Mar	easyJet
01 Mar - 31 Mar	easyJet
03 Mar - 24 Mar	easyJet
01 Mar - 14 Mar	Wizz Air Malta
12 Mar - 19 Mar	easyJet
02 Mar - 07 Mar	easyJet
07 Mar - 14 Mar	easyJet
09 Mar - 22 Mar	Ryanair
19 Mar - 19 Apr	easyJet
22 Mar - 19 Apr	easyJet
21 Mar - 16 Apr	Wizz Air Malta
16 Mar - 19 Apr	easyJet
25 Mar - 23 Apr	easyJet
24 Mar - 10 Apr	easyJet
22 Mar - 10 Apr	easyJet
18 Mar - 18 Apr	easyJet
31 Mar - 10 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 874€

Return flights