Panmure analysts said they were "not ready to turn positive due to continuing market uncertainty".
About 5,000 passengers were booked on the flights, which have been called off due to continuing security worries.
There was a warning against travelling through Caprivi due to continuing military action along the Angolan border.
Half-term holidaymakers heading for France were today warned to expect widespread travel disruption due to continuing protests against French Government pension reforms.
Chief executive Michael Spencer said: Due to continuing political and economic uncertainty we expect the recent high levels of volatility in financial markets to continue for the rest of the year.
News that Japanese carmakers will not restart production until next week due to continuing supply problems following the earthquake and tsunami disruption has hit a number of UK businesses.
The extra costs are due to continuing compensation for retail customers but also other issues such as foreign exchange, Libor and money laundering errors of the kind for which HSBC was fined £1.2bn in 2012.
SeaWorld on Thursday warned investors that its full-year profits will fall by a further $10m this year, due to continuing collapsing attendance at its orca theme parks in San Diego and San Antonio.
"Due to continuing threats to France by Islamist terrorist groups, and recent French military intervention against Daesh (formerly referred to as Isil), the French government has warned the public to be extra vigilant and has reinforced its own domestic and overseas security measures".
All in all, Kaiser estimates that 77 percent of the cost slowdown is due to the recession, with the remaining quarter due to "continuing changes in the way health care is delivered, but also to rising levels of patient cost-sharing in private insurance plans that discourage use of services".
Migration north or uphill will be a possible form of adaptation, the finding said, but the trees will have to do so at faster rates than they have done so far and "eventually, suitable habitat may not be present even on mountaintops due to continuing temperature increases".
