Thousands of people headed to and from the tourist island of Bali have reportedly been left stranded at airports due to volcanic and seismic activity.

Several international airli­nes cancelled flights to and from the tourist island of Bali as an ongoing volcanic eruption left travellers stranded at airports.

Several flights to and from Bali have been cancelled after the Mount Lewotobi Laki-laki volcano began spewing ash as high as 9km in the sky.