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

Return flights

19 Mar - 24 Mar	Avianca
20 Mar - 24 Mar	Avianca	direct
11 Mar - 16 Mar	Avianca	direct
15 Mar - 15 Apr	Avianca
16 Mar - 16 Apr	Avianca
12 Mar - 16 Mar	Avianca
28 Mar - 03 Apr	LATAM Airlines Group
19 Mar - 25 Mar	Avianca
16 Mar - 16 Apr	Avianca	direct
29 Mar - 04 Apr	LATAM Airlines Group
16 Mar - 26 Mar	LATAM Airlines Group
22 Mar - 25 Mar	Avianca
25 Mar - 30 Mar	Avianca
25 Mar - 28 Mar	LATAM Airlines Group
09 Mar - 23 Mar	LATAM Airlines Group
29 Mar - 04 Apr	Avianca	direct

Also check the deals for one-way flights from Quito 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 Quito to Buenos Aires in March from 497€

Return flights