Flights affected by Cyclone Evan

A cyclone heading towards Fiji has forced Air Pacific to cancel or delay flights between Australia and Nadi on Monday, but most of Sunday's flights are set to go ahead as scheduled.

The airline says most of today's flights will operate, but passengers should call the airline for changes including possible plans for today's flights to leave an hour earlier than scheduled.

Flights on Monday have been cancelled or delayed until Tuesday with the status of two flights to and from Brisbane yet to be advised.

Cyclone Evan killed at least four people in Samoa as it ripped through houses, knocking down power poles and trees, and causing flooding.

The Fiji Meteorological Service says the cyclone is expected to pass just north of Fiji later today with winds gusting up to 230km/h.

Passengers on affected flights are advised to call the Air Pacific call centre at +679 6720888 or +679 3304388 for further information and updates.