Operated by Silja Serenade & Silja Symphony
                        Helsinki → Mariehamn → Stockholm
| Helsinki | Mariehamn | Stockholm | 
|---|---|---|
| 17:00 | 04:15/04:20 | 10:00 | 
2024 even days from Helsinki:
Serenade: Jan,Mar,Jun,Jul,Sep,Oct
Symphony: Dec,Feb,Apr,May,Aug,Nov,Dec
Stockholm → Mariehamn → Helsinki
| Stockholm | Mariehamn | Helsinki | 
|---|---|---|
| 16:45 | 23:45/23:55 | 10:30 | 
2024 even days from Stockholm:
Serenade: Dec,Feb,Apr,May,Aug,Nov,Dec
Sympphony: Jan,Mar,Jun,Jul,Sep,Oct
Exceptions on Stockholm-Helsinki route
                        
| Ship | Date | Departure | Departure | Arrival | ||||
|---|---|---|---|---|---|---|---|---|
| Silja Serenade dry-docking | 07.-29.01.2025 | 07.01.2025 out of service in Stockholm 10:00 30.01.2025 in service from Helsinki 17:00  | 
		||||||
| 
			 
 Stockholm Marathon  | 
			30.05-01.06.2025 | 30.05.2025 dep Hel 17:00 31.05.2025 arr Mhn 03:30 / dep Mhn 03:35 / arr Sto 09:00 / dep Sto 19:00 01.06.2025 arr Mhn 02:00 / dep Mhn 02:05 / arr Hel 12:00  | 
		||||||