AirHint found the following cheapest return flights from Barcelona (BCN) to Quito (UIO) in September 2025 (see full year).

Return flights

16 Sep - 01 Oct	Vueling Airlines
15 Sep - 20 Sep	Delta
04 Sep - 13 Sep	Delta
04 Sep - 20 Sep	Delta
15 Sep - 30 Sep	Delta
08 Sep - 15 Sep	Delta
11 Sep - 22 Sep	Delta
19 Sep - 04 Oct	Iberia
01 Sep - 30 Sep	Delta
10 Sep - 24 Sep	Delta
03 Sep - 20 Sep	Delta
13 Sep - 26 Sep	Iberia
12 Sep - 15 Oct	Delta
03 Sep - 11 Oct	Iberia
22 Sep - 05 Oct	Iberia
15 Sep - 20 Oct	Delta

Also check the deals for one-way flights from Barcelona to Quito in September.

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 Barcelona to Quito in September from $769

Return flights