Suburban lines

S1

Saronno - Bovisa - Rogoredo - Lodi

Operating Mon-Sun Frequency 30' (after 21:30 Bovisa-Lodi only)

S2

(Meda) - Seveso - Bovisa - Rogoredo

Operating Mon-Fri Frequency 30' (Seveso-Meda scheduled only)

S3

Saronno - Bovisa - Cadorna

Operating Mon-Sun Frequency 30'

S4

Camnago - Bovisa - Cadorna

Operating Mon-Sun Frequency 30'

S5

Varese - Rho - Pioltello - Treviglio

Operating Mon-Sun Frequency 30'

S6

Novara - Rho - Pioltello - (Treviglio)

Operating Mon-Sun Frequency 30' (Pioltello-Treviglio peak hours only Mon-Fri)

S7

Lecco - Molteno - P. Garibaldi

Operating Mon-Sun Frequency 30' (peak hours), 60' (off-peak)

Service suspended between Triuggio and Villasanta from 7 September 2026 to 2 September 2027 due to infrastructure works; replacement buses to Villasanta and Arcore (Trenord)

S8

Lecco - Carnate - P. Garibaldi

Operating Mon-Sun Frequency 30' (weekdays), 60' (holidays)

S9

Saronno - Seregno - Lambrate - S. Cristoforo - Albairate

Operating Mon-Sun Frequency 30'

S11

Como San Giovanni - Seregno - P. Garibaldi - (Rho)

Operating Mon-Sun Frequency 30' (Como-P. Garibaldi), 60' (P. Garibaldi-Rho weekdays only)

S12

Bovisa - Rogoredo - Melegnano

Operating Mon-Fri Frequency 30'

S13

Garbagnate - Bovisa - Rogoredo - Pavia

Operating Mon-Sun Frequency 30'

S19

Rogoredo - S. Cristoforo - Albairate

Operating Mon-Fri Frequency 30'