Here's a brief list to get you started:
Monday
- Algoz: Second Monday of the month. 8am – 1pm
- Aljezur: Third Monday of every month 8am – 2pm
- Portimão: First Monday of each month 8am – 2pm
- São B. de Messines: Fourth Monday of every month
- Silves: Third Monday of the month 8am – 1pm
- Vila do Bispo: Every Monday from 9am – 1pm
Tuesday
- Albufeira: First and Third Tuesday of the month 9am – 2pm
- Alvor: Second Tuesday of the month 9am – 2pm
Wednesday
- Quarteira: Gypsy market every Wednesday 8am – 3pm
- Quarteira: Every Wednesday Farmers market 9am – 1pm
- Raposeira: First Wednesday of the month 9am – 2pm
- Vila do Bispo: Every Wednesday Farmers market 9am – 1pm
Thursday
- Alte: Third Thursday of the month 8am – 2pm
- Boliqueime: Last Thursday of the month 8am – 2pm
- Boliqueime: First Thursday of the month 8am – 2pm
- Vaqueiros: Every Second Thursday of the month 9am – 2pm
- Vila do Bispo: First Thursday of the month 8am – 1pm
Friday
- Alcantarilha: First Friday of the Month 9am – 2pm
- Guia: Third Friday of the month 9am – 2pm
- Monchique: Second Friday of the month 8am – 2pm
- Sagres: First Friday of the month 9am – 2pm
- Vila do Bispo: First Friday of the month 9am – 2pm
Saturday
- Alvor First Saturday of the month 8am – 6pm
- Azinhal Last Saturday of the month 8am – 2pm
- Benafim First Saturday of the month 9am – 2pm
- Castro Marim Second Saturday of the month
- Lagos Weekly Farmers Market 8am – 2pm
- Lagos General market first Saturday of the month
- Loulé Gypsy market and farmers market every Saturday of the month
- Monte Gordo Fourth Saturday of the month from 10am
- Paderne First Saturday of the month 9am – 1pm
- São Bras de Alportel General market every Saturday of the month 8am – 1pm
- São Marcos da Serra First Saturday of the month 9am – 2pm
- Tavira Third Saturday of the month 9am – 1pm
- Tunes Fourth Saturday of the month 8am – 1pm
- Vila Real d. S. António Second Saturday of the month from 10am
- Vila do Bispo Farmers market 9am – 1pm
Sunday
- Almancil Second Sunday 8am – 1pm
- Almancil General market first and fourth Sunday of the month from 10am
- Almancil Flea market first and third Sunday of the month 7.30am – 2pm
- Azinhal First Sunday of the month 8am – 1pm
- Cabeça Gorda First Sunday of the month 9am – 2pm
- Barão de São João Large Flea market every fourth Sunday of the month
- Espiche Every third Sunday of the month
- Estoi Large market every second Sunday of the month 8am – 3pm
- Faro Second Sunday of the month 8am – 4pm
- Ferragudo Second Sunday of the month 8am – 1pm
- Lagoa Second Sunday 8am – 1pm
- Lagos First Sunday of the month
- Moncarapacho Large market first Sunday of the month 8am – 1pm
- Portimão First and third Sunday of each month
- Pereiro Fourth Sunday of the month 9am – 2pm
- Tavira - Santa Catarina Flea market every fourth Sunday of the month 8am – 1pm
- Vila Real d. S. António Every third Sunday of the month 8am – 1pm