The airport has seen passenger numbers fall by 7.7%
About 50 jobs could be axed by Birmingham International Airport, which has seen passenger numbers fall.
The airport said the summer season was predicted to be quiet and no growth was predicted until 2011.
Figures released earlier this month showed that year-on-year passenger figures for March fell by 7.7%.
A spokesman said it hoped to cut costs but none of the axed jobs would be security or safety staff. It has begun a 30-day consultation with workers.
The airport said the move had been caused by the global economic downturn.
The spokesman said: "Our passenger numbers are reduced and no growth is forecast until 2011.
"This is only the second time this has happened in two decades and will significantly impact on both aeronautical and commercial income.
"This is illustrated by predicted activity levels for this summer season when we will witness passenger numbers lower than the previous year. "
A total of 674,301 passengers used the airport in March.