Airlines faced accusations of ripping off passengers during TT in Tynwald this week.
North Douglas MHK David Ashford wanted to know why Birmingham flights a week before the festival cost £84, but rise to £265 in practice week and £271 in race week.
He asked whether the Department of Infrastructure would step in and regulate fares.
However Minister Ray Harmer said the increases were a sign the market was responding to supply and demand:
Fundraiser hits goal to spark Manx-US romance!
Local drinks take honours at beer festival
Summerland car park plans rejected
Three sets of evening TT course roadworks this week
Woman launches fundraiser to reunite with Manx partner
Fury calls out Joshua after successful boxing return
Part of the north to be without water tonight
Emergency remote schooling plans being prepared