More flights from Heathrow to Santiago in Chile and Washington DC are being added by British Airways to its winter schedule.
Frequency to Santiago will rise from four to flight flights a week from October 28.
Santiago is currently served on Mondays, Tuesdays, Thursdays and Saturdays with the extra service being added on Sundays.
The airline offers the only direct flight between London and Chile, which is BA’s route, taking 14 hours 40 minutes. Return fares start at £739.
An additional three flights a week will be added to the current two-a-day schedule to the US capital from October 29.
Three daily flights will run on Mondays, Thursdays and Saturdays, with return fares starting at £385.
All flights are served by the airline’s new four-cabin Boeing 787-9 Dreamliners.
BA and American Airlines will operate up to 67 daily flights this summer as part of their transatlantic joint business.
BA network and alliances director Sean Doyle said: “We are pleased to be offering our customers an even better flight timetable this winter.
“Our direct service to Santiago launched in January 2017 and has since proved incredibly popular with a whole range of flyers; from leisure travellers looking for adventure, exploration and experiences, to business travellers working in the region.
“The additional Washington flights reconfirm our commitment to offering our customers even more choice between the UK and the US, and the launch of our new Nashville service on May 4 will bring the number of cities we serve direct in the US up to 26.”