Jetairfly offers very cheap flights to Cabo Verde. Boa Vista island from Helsinki for 220 EUR round trip! This is last minute offer.
Helsinki – Boa Vista – Helsinki
How to book:
Go to http://www.finnmatkat.fi/ and choose the routing and dates from above.
Baggage during the trip:
One cabin bag up to 6 kg and one checked baggage up to 15 kg per passenger.