4 sentences

1. 就在你回程的路上。

   jiù zài nǐ huí​chéng de lù shàng.

   It's right on your way back.

   Source: OpenSubtitles

2. 我买了回程的机票。

   wǒ mǎi le huí​chéng de jī​piào.

   I bought a return flight ticket.

   Source: Dong Chinese Dictionary

3. 回程我来开车吧。

   huí​chéng wǒ lái kāi​chē ba.

   Let me drive on the way back.

   Source: OpenSubtitles

4. 皮埃尔下周要回法国，他已经买好了回程的机票。

   Pí'āi'ěr xià zhōu yào huí Fǎ​guó, tā yǐ​jīng mǎi​hǎo le huí​chéng de jī​piào.

   Pierre is returning to France next week; he has already bought his return flight ticket.

   Source: Dong Chinese Dictionary