"All departures have been delayed due to the unusual weather conditions," a spokeswoman at the airport told AFP by telephone.
The spokeswoman could not immediately say when departures would resume.
This is the second time this year Kyrgyzstan's main airport has stopped flights from departing the airport.
Authorities have been especially cautious since a Turkish cargo plane flying in foggy conditions crashed into a village close to the airport in January last year, killing 39 people.
Flights were cancelled and a state of emergency declared when a snowstorm struck Astana, the capital of Kyrgyzstan's neighbour Kazakhstan in January, briefly cutting off road access to the city.