airBaltic (BT, Riga) will add an additional eight B737-500 to its fleet. It has announced several new routes from its two bases in Riga and Vilnius: Riga-Bergen: 3x weekly B737-500 service starting on April 17 Riga-Simferopol: 2x weekly B737-500 service starting on April 11 Riga-Tbilisi: 2x weekly B737-500 service starting on May 2 Vilnius-Budapest: 2x weekly Fokker 50 service starting on March 28