AirHint found the following cheapest return flights from Miami (MIA) to Bilbao (BIO) in May 2026 (see full year).

Return flights

13 May - 20 May	SWISS
19 May - 26 May	SWISS
15 May - 22 May	Iberia
21 May - 28 May	American Airlines
26 May - 02 Jun	Air Canada
16 May - 23 May	American Airlines
18 May - 25 May	Iberia
20 May - 27 May	Finnair
27 May - 03 Jun	Air Canada
28 May - 04 Jun	Air Canada
25 May - 01 Jun	Air Canada
14 May - 21 May	Air Canada
31 May - 07 Jun	Air Canada
29 May - 05 Jun	Air Canada
17 May - 24 May	Iberia
30 May - 06 Jun	Air Canada
22 May - 29 May	American Airlines

Also check the deals for one-way flights from Miami to Bilbao 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 Miami to Bilbao in May from 414€

Return flights