The CEO of International Airlines Group, Willie Walsh, said he was confident the plane would make a successful return.
The dearth of Max orders in June marked the third straight month without any new orders for the planes.
While it's the first official switch since the 737 Max was grounded, Indonesian carrier Garuda said earlier this year it was talking to Boeing about canceling its order after Boeing delivered just one of the 50 737 Max jets. Oman Air started in June it might begin talks with Airbus if Boeing did not present "support and recovery" for the 737 Max. In the first half of 2019, deliveries have plunged by 37% from 378 a year ago to just 239 aircraft.
With the 737 MAX grounding now expected to last until close to the end of this year, it's pretty clear that the company's cash flow in 2019 is going to be way short of expectations.
If the numbers hold throughout the year, Airbus could replace Boeing as the world's largest aircraft maker. Leading analysts have slashed their profit forecasts for Boeing due to the 737 MAX crisis, which has halted deliveries and forced the company to store planes after they are manufactured. The Air Force discovered debris rattling around in some of the first tankers delivered and has slowed deliveries to around 1.5 planes per month, about half the original delivery schedule. Customers, including three of the four largest US airlines, have given no hint that they plan to nix orders from Boeing.
On Monday, the Chicago company said that it is proud of its long partnership with Saudi Arabia's aviation industry.
Flyadeal, the budget airline run by Saudi Arabian Airlines, declared on Sunday that it'd purchase as much as 50 Airbus A320neo planes, the competing narrowbody model to Boeing's 737 Max, and function an all-Airbus fleet.
A few airlines have shown confidence in the MAX since the fatal crash, with British Airways-owner IAG last month signing a letter of intent to order 200 versions of the aircraft.
Boeing shares fell 0.4 percent to $349.64 in mid-morning trading.