The companies said they had signed a memorandum of understanding for VietJet to buy 100 more A321neo planes, with the option to add up to a further 50 to the deal in future. The agreement confirmed an earlier Reuters story. A deal for 150 A321neos could be worth around $9.4 billion, according to estimated prices provided by Cirium Ascend.

Airbus struck a deal with budget airline VietJet for up to 150 single-aisle jets at the Paris Airshow on Tuesday, where industry hopes of a return to tariff-free trade were given a boost by U.S. Transport Secretary Sean Duffy.

PARIS (Reuters) - Airbus struck a deal with budget airline VietJet for up to 150 single-aisle jets at the Paris Airshow on Tuesday, where industry hopes for a return to tariff-free trade were given a boost by U.S. Transport Secretary Sean Duffy.