行って来たところだ

have just gotten back from

→ 行く
phrase Uncommon #12,119
have just gotten back from Indicates that someone has just returned after going somewhere. The ending だ is plain; です is the polite equivalent.
JA: 買い物に行って来たところだ。
EN: I’ve just gotten back from shopping.

私は叔父を見送りに駅まで行って来たところだ。

I just went to the station to see my uncle off.

理髪店に行って来たところだ。

I just got back from the barber.

彼は友達を見送りに駅へ行って来たところだ。

He’s just gotten back from the station, where he went to see his friend off.

父を見送りに空港へ行って来たところだ。

I just got back from the airport after seeing my father off.