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

Return flights

23 Mar - 29 Mar	Avianca
22 Mar - 27 Mar	Avianca
23 Mar - 27 Mar	Avianca
23 Mar - 26 Mar	Avianca	direct
22 Mar - 25 Mar	Avianca
22 Mar - 26 Mar	Avianca
22 Mar - 10 Apr	Avianca
22 Mar - 26 Mar	Avianca	direct
23 Mar - 13 Apr	Avianca
19 Mar - 24 Mar	Copa
30 Mar - 31 Mar	Copa
23 Mar - 28 Mar	Avianca
20 Mar - 30 Apr	Avianca
30 Mar - 04 Apr	Avianca
23 Mar - 11 Apr	Avianca	direct
24 Mar - 14 Apr	Copa
16 Mar - 02 Apr	Copa
29 Mar - 04 Apr	Avianca	direct
27 Mar - 04 Apr	JetSmart
30 Mar - 05 Apr	Avianca

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 362€

Return flights