British Airways is proposing to add an extra seat into each economy class row on some of its aircraft.
The plan could increase the number of seats on its London Gatwick-based Boeing 777 aircraft by almost a fifth, from 280 to 332.
Each row would have 10 seats rather than the current configuration of nine.
A BA spokeswoman said: “We are flying more customers than ever before to our expanding network of destinations.
“To meet this demand, we are updating our (Boeing) 777 cabins to bring us into line with many of our competitors and allow us to offer even more low fares.
“As part of the update, we will also be fitting new entertainment systems with bigger screens.”
According to The Independent, Willie Walsh, the chief executive of BA’s parent company, IAG, told investors that the airline was “responding to a market opportunity”.
The online newspaper reported that BA also intends to add a dozen extra seats on its short-haul Airbus A320 aircraft based at Heathrow, matching easyJet’s fleet.