Singapore Airlines (SIA) doesn't list a dedicated physical office in Algiers, Algeria in standard search results you'll likely need to book via their website, through a partner airline like Turkish Airlines or Air Algérie, or use their global contact center, as services are primarily online or through local travel agents, with general contacts like their UK line (+1-866-829-1086) available for support. Jauntlet.comhttps://jauntlet.com/