MAG noted that it served 80% of its pre-pandemic passenger traffic for the first time in the month.
Out of the three airports that MAG operates, London Stansted is said to have recorded more than two million passengers in April, which also included the Easter Bank Holiday weekend.
MAG said that the figure represents 85% of the traffic from April 2019.
On the other hand, Manchester served 79% of pre-pandemic passenger volume while East Midlands airports served 64% of this traffic.
From January to April, passenger volumes at MAG airports are said to have improved from 37% to 80%, compared to pre-pandemic levels.
Passenger volume across the group was also 10% more in comparison to the month of March.
During the month of April, the group also recruited new team members.
MAG CEO Charlie Cornish said: “Recovery across all three of our airports continues at pace, illustrating the huge pent-up demand for international travel we knew was in the market.
“We have worked positively with our airline partners to deliver a full flying schedule for our passengers, ensuring they get away on their trips as planned.
“I am pleased with the significant progress we have made and continue to make with our recruitment efforts, which will equip our airports well for the summer.”