Speculation has been mounting that the airline could order at least 100 of the aircraft with modifications to include extra seats.
An announcement by Ryanair chief executive Michael O’Leary and Boeing boss Ray Connor is expected to be made in New York.
A deal for 100 737 MAXs has been valued at around $10 billion.
Boeing admitted earlier this year that it was looking at adapting the 737 MAX to accommodate more seats.
It is believed an adapted version of the 737 MAX could have 200 seats, 11 more than the present maximum.
A Ryanair spokesman told The Telegraph: “Ryanair can confirm Michael O’Leary and Ray Conner of Boeing will hold a press conference in New York tomorrow morning. We will not be commenting ahead of the press conference.”
The budget airline is aiming to carry 120 million passengers, up from 81.7 million at the end of its last financial year, which ended on March 31.
Ryanair will this month receive the first of 180 Boeing current generation 737-800 aircraft ordered last year as it expands its network and eyes more routes to primary airports in Europe.
Sourced from Travel Weekly