It the third day in a row that the airport runway has been closed
Flights began to run in and out of Guernsey, for the first time in nearly three days, at about 1450 GMT on Friday.
Conditions on the runway improved due to a combination of higher temperatures and clearing work.
Airport director Colin Le Ray said they were trying to work on the backlog but the situation may change again over the weekend.
He said there was the potential for further disruption from the weather.
The weather continues to play havoc at Alderney Airport, which remains closed.
All the island's schools opened, after all but two being closed on Thursday.
Bus services were running from earlier, except for around Torteval, where patches of black and sheet ice made the roads dangerous.
Guernsey Police reported a big improvement in road conditions after icy roads, mainly in the south of the island, led to treacherous driving conditions on Thursday.