AirHint found the following cheapest return flights from Madrid (MAD) to Quito (UIO) in August 2025 (see full year).

Return flights

30 Aug - 28 Sep	Delta
25 Aug - 25 Sep	Avianca
18 Aug - 29 Sep	Avianca
31 Aug - 22 Sep	Avianca
21 Aug - 14 Sep	Delta
30 Aug - 20 Sep	Avianca
25 Aug - 20 Sep	Avianca
17 Aug - 25 Sep	Avianca
16 Aug - 24 Sep	Avianca
16 Aug - 22 Sep	Avianca
21 Aug - 24 Aug	Delta
21 Aug - 28 Aug	Delta
21 Aug - 31 Aug	Delta
18 Aug - 20 Aug	Avianca
16 Aug - 23 Aug	Avianca
25 Aug - 31 Aug	Avianca
18 Aug - 24 Aug	Avianca
16 Aug - 16 Aug	Avianca
19 Aug - 29 Aug	Avianca
26 Aug - 29 Aug	Avianca

Also check the deals for one-way flights from Madrid to Quito in August.

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 Madrid to Quito in August from 719€

Return flights