Free flights for children under 12 who travel with a full paying adult are being offered by British Airways across domestic routes and to the Danish home of Lego.
Up to two children can fly free of charge this summer when travelling with an adult on routes between Heathrow and Leeds Bradford, Newcastle, Edinburgh, Inverness, Belfast and Billund in Denmark.
The deal covers Euro Traveller tickets booked until October 1 for travel between June 1 and October 31. Return fares start at £73 to Billund and rise to £88 to Leeds Bradford.
BA chief commercial officer, Adam Daniels, said: “Saving every penny counts when it comes to family holidays so flying kids for free will make it cheaper to fly away for fun and see more of the UK and Europe this summer.
“With so many fantastic tourist attractions and activities for kids across Britain, the offer also looks set to give UK tourism a boost by encouraging families to visit London, the North, Scotland and Northern Ireland for their holidays.”