British Airways will start a number of new services in winter 2012/13 following its takeover of the bmi airline.
Among the routes will be London City Airport to Aberdeen, Heathrow to Leeds Bradford and Heathrow to Belfast.
The airline will also be starting Heathrow services to Seoul in South Korea and to Zagreb in Croatia, while there will be a three-times-a-week service between Gatwick and Las Vegas.
BA will also be increasing frequency on a number of routes.
BA chief executive Keith Williams said: "Bmi's integration into BA is really enabling us to grow our network as we promised, giving customers more flights to destinations we know they want to fly to.
"We're focusing on new routes such as Seoul, Leeds Bradford and Zagreb, more flights to popular destinations and creating more connections for the UK regions to our global network of flying."