British Airways will run new routes from Heathrow to Ljubljana in Slovenia and Montpellier in the south of France next summer.
Flights to Ljubljana will run Mondays and Fridays from July 15 to September 2.
The Montpellier route will run between the same dates on Mondays, Thursdays, Fridays and Saturdays.
Tickets are available now on BA’s website.
The airline is also increasing the number of flights to Nantes, Olbia and Valencia from Heathrow.
Further afield, next year BA will restart a Heathrow-Osaka route (which it last operated in 1998), a Pittsburgh route (which it last flew from Gatwick in 1999), and launch the first international flights into Charleston.
Sean Doyle, BA Director of Network and Alliances, said: “We are gearing up for an exciting summer next year as we add more routes to our extensive network.
“We’re always developing our leisure offering and are committed to giving our customers even more choice of destinations at competitively low prices.”