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

Return flights

09 Mar - 23 Mar	Ryanair
09 Mar - 30 Mar	Ryanair
04 Mar - 14 Mar	easyJet
29 Mar - 14 Apr	Wizz Air UK
19 Mar - 07 Apr	easyJet
04 Mar - 12 Mar	Wizz Air Malta
23 Mar - 29 Mar	easyJet
02 Mar - 19 Mar	Wizz Air Malta
02 Mar - 13 Mar	Wizz Air Malta
07 Mar - 18 Mar	Wizz Air Malta
13 Mar - 21 Mar	Wizz Air Malta
13 Mar - 30 Mar	easyJet
18 Mar - 11 Apr	easyJet
23 Mar - 28 Apr	Ryanair
18 Mar - 08 Apr	easyJet
23 Mar - 18 Apr	Ryanair
26 Mar - 09 Apr	easyJet
31 Mar - 18 Apr	Wizz Air UK
29 Mar - 09 Apr	Wizz Air UK
18 Mar - 18 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 931€

Return flights