Grammar fix

set off for

to start a journey to a place

to begin traveling to a particular destination.

phrasal verbB1common

Hear it in context

Notice where the phrase sounds natural.

We set off for Paris early in the morning to avoid traffic.travel
Last summer, my friends and I set off for the mountains to go hiking, and it was an unforgettable experience.IELTS speaking

Pattern: set off for + place

WrongWe set off to the airport early.

RightWe set off for the airport early.

'Set off FOR' a destination (set off TO + verb is also fine: 'set off to find it').

Patternset off for + place

Choose the version that sounds natural in speech.

Stiff We shall commence our journey towards the coast at dawn.

Natural We set off for the coast at dawn.

Natural; 'commence our journey towards' is archaic.

Words that usually travel with it.

'Set off' alone can mean to start a journey in general, but 'set off for' is used when you mention the destination.