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

Return flights

03 Mar - 10 Mar	easyJet
03 Mar - 17 Mar	easyJet
02 Mar - 15 Mar	easyJet
02 Mar - 09 Mar	easyJet
07 Mar - 21 Mar	Ryanair
10 Mar - 24 Mar	easyJet
23 Mar - 01 Apr	easyJet
23 Mar - 20 Apr	easyJet
25 Mar - 15 Apr	easyJet
27 Mar - 25 Apr	Ryanair
06 Mar - 27 Mar	easyJet
02 Mar - 16 Mar	easyJet
02 Mar - 31 Mar	easyJet
24 Mar - 14 Apr	easyJet
26 Mar - 30 Mar	easyJet
18 Mar - 02 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 936€

Return flights