School buses have been cancelled for most students in eastern Ontario this morning as a wintry storm that's expected to bring freezing rain gets underway.

School buses are cancelled for the following boards:

Ottawa-Carleton District School Board.

Ottawa Catholic School Board.

Renfrew Country District School Board.

Upper Canada District School Board.

Catholic District School Board of Eastern Ontario.

Conseil des écoles publiques de l'Est de l'Ontario.

Conseil des écoles catholiques du Centre-Est.

Commission scolaire des Hauts-Bois-de-l'Outaouais.

Buses are still running for the majority of schools in the Western Québec School Board, except for Maniwaki Woodland School, St. John's Elementary and Dr. Wilbert Keon School.

Ten flights had been cancelled at the Ottawa International Airport as of 7 a.m. Thursday.