The moves by Singapore's national carrier come amid global fuel uncertainty stemming from the unrest in the Strait of Hormuz. SINGAPORE: Singapore Airlines (SIA) said on Friday (May 8) that it would increase flight frequencies between Singapore and Manchester, Milan, Munich, and London Gatwick amid "strong demand" on the routes. The airline will also launch five times weekly services to Madrid via Barcelona on Oct 26. In a news release, SIA said that it will restructure its current twice-weekly