I’r rhan fwyaf o deithwyr rhyngwladol, maent yn golygu y bydd angen iddynt gwblhau prawf cyn ymadael, a hunan ynysu am 10 diwrnod ar ôl dychwelyd i Gymru i sicrhau nad ydynt wedi dod â choronafeirws adref gyda nhw.
They mean that, for most international travellers, they will need to complete a pre-departure test and quarantine for 10 days on their return to Wales to ensure they have not brought coronavirus home with them.