Operator HIAL has said it is in discussion with airlines on possible new routes from Wick.
The company's chief fire officer, George Farquhar, said winter months were a challenge for Hial.
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Highlands and Islands Airports Limited (Hial) said the weather of recent UK winters had been Arctic-like.
BBC: Scottish airports firm looks to Norway's winter tactics
Hial manages Barra, Benbecula, Campbeltown, Dundee, Inverness, Islay, Kirkwall, Stornoway, Sumburgh, Tiree and Wick.
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Inglis Lyon, managing director of Hial, said the company had enjoyed a good start to the new financial year.
BBC: London 2012 'a likely factor' in fall in Hial passengers
Hial said the statistics showed it recorded growth of 5% across the group.
BBC: London 2012 'a likely factor' in fall in Hial passengers
Operators Highlands and Islands Airports Limited (Hial) said numbers in December rose year-on-year by 24.7% to reach more than 90, 600.
Overall, across the HIAL network, for the year to date passenger numbers have increased by 2.4% (April to August 2012).
Almost one million passengers have used Hial's airports in the financial year to date - a 9.6% rise on last year.
Highlands and Islands Airports Ltd (Hial) said its figures for July were down 1.3%, compared to the same time last year.
BBC: London 2012 'a likely factor' in fall in Hial passengers
Hial's chairman Grenville Johnston said the financial results had benefited from a "relatively benign" 2011-12 winter, after two previous challenging years.
Hial is a public corporation which receives subsidies from the Scottish government.
Highlands and Islands Airports Ltd (HIAL), which runs Dundee airport along with 10 other sites, saw an overall increase in passengers last month.
Dundee airport is operated by Highland and Islands Airports Ltd (HIAL).
Hial's airports in the Highlands, Northern Isles, Argyll, Dundee and the Hebrides connect to a network of more than 30 destinations in the UK and abroad.
BBC: London 2012 'a likely factor' in fall in Hial passengers
Of Hial's 11 airports, only Inverness and Tiree recorded increases.
BBC: London 2012 'a likely factor' in fall in Hial passengers
The group's busiest airport, Inverness, which handled about half of all HIAL passengers, recorded growth of 0.5%, which the company attributed to an increase in international traffic due to the success of the city's Amsterdam route and the recently introduced Air France KLM code share.
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