EasyJet is expected to report record annual profits of about £700 million tomorrow.
But the budget airline will warn that it has been affected by the recent crisis in Sharm el-Sheikh.
A jump in pre-tax profits of as much as 20.5% is expected for the year to the end of September, according to weekend reports.
The carrier was helped by poor weather across northern Europe during the peak summer months, which boosted carryings as consumers sought out the sun.
EasyJet said earlier this month that its full-year pre-tax profit guidance continued to be within a range of £675 million to £700 million.
The airline’s annual carryings for the year to September were up by 6% to 68.6 million.