U.S. approves $2.75 billion sale of F-35B jets to Singapore Christian Fernsby ▼ | January 10, 2020 The U.S. State Department has approved the sale of up to 12 F-35B fighter jets and related equipment to Singapore.Article continues below Topics: U.S. F-35B JET SINGAPORE Estimated cost is $2.75 billion, pending approval from Congress, the Defense Security Cooperation Agency said on Friday. ■