Ryanair could receive its first deliveries of up to 10 grounded 737 MAX aircraft from Boeing by April, the airline's chief marketing officer Kenny Jacobs said.
But Mr Jacobs cautioned that the timing was dependent on regulators.
April is earlier than indicated by Ryanair boss Michael O'Leary this month when he said the airline might not receive its first 737 MAX until October.
The 737 MAX, Boeing's fastest-selling aircraft, has not flown since last March following two crashes which claimed 346 lives. Ryanair has up to 210 of the planes on order, but none in service.
"We now think we will get it in March or April this year, looks more like April than March, and we think we will get up to 10 MAX aircraft," Jacobs told a news conference in Madrid.
"It could still mean less than ten and the date could still change. It has been a moving feast and the dates have slipped up to now for the past months," Jacobs said, adding all European airlines' orders were in the hands of regulators.
"We still think the MAX is a great aircraft. Our focus, their (Boeing's) focus now is just to get the MAX flying," he added.
Ryanair last month cut its passenger traffic forecast for the year to March 2021, to 156 million from 157 million after scrapping some planned summer operations due to the MAX delays.
That forecast was based on Ryanair receiving 10 MAX aircraft in time for the summer season. It previously cut expectations to 20 from the 60 originally scheduled.
However, the airline has also since raised its profit forecast for the year to the end of March 2020 after a better-than-expected performance over Christmas and New Year.