The phrase "departure to" is correct and usable in written English.
For example, you can use it to describe a journey: "We scheduled our departure to the Caribbean for the following morning."
It was cleared for departure to Alaska.
He will use Brown's departure to increase pressure on Cameron.
N'Golo Kanté's departure to Chelsea clearly took Ranieri by surprise.
Diaz's departure to start the sixth inning popped the cork.
He might want to consider using Mr Sokol's unanticipated departure to shed more light.
Grandma recounts his departure to Oskar: Why are you leaving me?
Mark Sanford's unexpected departure to Argentina, and the ugliness surrounding her race for governor.
Widespread speculation, including in China's press, has linked his departure to corruption investigations.
The opening is cinematic, cutting swiftly from arrival to departure to the shock of the countryside.
The only transatlantic cancellation so far is Air Canada's departure to St John's in Newfoundland.
The next day, I caught the 12 12 p.m. departure to Mallaig.
