AirHint found the following cheapest return flights from Quito (UIO) to Madrid (MAD) in May 2026 (see full year).

Return flights

16 May - 23 May	Air Europa	direct
01 May - 23 May	Avianca
09 May - 21 May	Avianca
09 May - 31 May	Avianca
07 May - 26 May	Avianca
06 May - 25 May	Iberia	direct
07 May - 26 May	Air Europa	direct
01 May - 17 May	Avianca
01 May - 15 May	Avianca
11 May - 22 May	Avianca
24 May - 05 Jun	Iberia	direct
31 May - 16 Jun	Iberia	direct

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

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 Madrid in May from $830

Return flights