以下是一些适合出差时发的英文文案，供您参考：

Off to the road again!

Back on the road.

Setting off on another adventure.

Flying the coop for a quick getaway.

It's time for another business trip.

Off to the city for a few days of meetings and client visits.

Packing my bags and heading out for some face-to-face time with clients.

Taking the train to the next destination.

On the road again, excited to hit the pavement and make some progress.

Catching a flight to the next city for a few days of intense negotiations.