Dhaka, June 7 -- Virgin Australia, United Airlines, and Delta Air Lines are among the carriers expanding their long-haul networks in June by launching new international routes.

Virgin Australia will start flights to Doha for the first time this month, extending its international presence through a strategic partnership with Qatar Airways, which acquired a 25pc stake in the airline last September.

The airline will launch daily service from Sydney to Doha from June 12, followed by flights from Brisbane on June 19 and Perth on June 26, using Boeing 777-300ERs wet-leased from Qatar Airways. A route from Melbourne follows in December.

June also marks a first for United Airlines, which will begin its first-ever nonstop service to Greenland. ...