According to Tui Travel, it has agreed to buy 60 737 MAX aircraft from Boeing. The deal will also provide an option to buy a further 90 of same model. The reports have revealed that Tui was buying 60 planes at a good discount to the list price of $6.1bn.

Tui has 141 aircrafts under operations across six European airlines including Thomson Airways, Tuifly, Tuifly Nordic, Arkefly, Jetairfly and Corsair. Tui has said that new planes will boost fuel efficiency.

Boeing has said that its 737 MAX plane is highly efficient and burns 13% less fuel than other 737 models. The aircrafts are slated to be delivered between Jan 2018 and Mar 2023.

"Following the delivery of the aircraft, TUI Travel will continue to enjoy the benefits of a modern, fuel-efficient and cost-effective aircraft fleet", the company said.

Being the world's largest tour operator, Tui has its presence in 180 countries. Tui's last purchase from Boeing went through problems because of lack of delivery schedule from the plane maker. Boeing had to deliver the Dreamliner plane to Tui, which planned its Thomson brand to start operations with Dreamliners in May.

All 787 Dreamliners were reported to have problems with batteries due to which they all were grounded. However, commercial flights have now restarted after modification.