Three of British Airways newest domestic routes from Belfast to Exeter, Glasgow and Leeds-Bradford are being extended into the winter season.
Customers will also be able to book to fly between Northern Ireland and Birmingham as the airline further extends its UK network.
Flights between Belfast and Birmingham will operate twice daily, increasing to three times a day on Thursdays and Fridays.
Flights from Belfast to Exeter, Glasgow and Leeds-Bradford will increase compared to the summer at four, 13 and ten a week respectively.
New ski routes to Salzburg will operate from London City and Southampton.
The additional services will be operated using BA CityFlyer’s fleet of Embraer 190 aircraft.
Tom Stoddart, managing director of BA CityFlyer, said: “This year has shown how much customers want to stay connected with the rest of the UK. We’re responding to the customer demand we saw over the last few months by extending some of our newest UK routes from Belfast City Airport.
Katy Best, commercial director at Belfast City airport, added: “British Airways has a longstanding presence at Belfast City airport, and its introduction of regional services earlier this year has been strongly welcomed by our passengers who know and enjoy the excellent BA product.
“This latest increase in frequency is superb news for those who want to plan ahead and book winter staycations or weekend breaks in Birmingham, Exeter, Glasgow or Leeds. The convenient flight times will also be attractive to business travellers who avail of can same day returns.”