が済んだら

when ... is finished

→ が
phrase Uncommon #9,742
when ... is finished Used after a noun or clause to mean “when ... is finished” or “once ... is taken care of.” In 気が済んだら, it means “once you feel satisfied.”
JA: 仕事が済んだら、映画を見に行こう。
EN: Once the work is finished, let's go see a movie.

すべてが済んだらまたバンドやろう

Once everything is settled, let's get the band back together.

— JUNO/ジュノ (2007)

ここが済んだら行く

I'll go once I'm done here.

— アバウト・タイム ~愛おしい時間について~ (2013)

書類が済んだら一緒にどうぞ

Once you're done with the paperwork, please come with me.

— Good Luck, Have Fun, Don't Die (2026)

最後の一つが済んだら

Once the last one is done.

— ロード・オブ・ザ・リング/王の帰還 (2003)

食事が済んだら行きます

I'll go once I've finished eating.

いいかこいつが済んだら––お前もやってやる

Listen, once I'm done with this guy—I'll deal with you too.

— 28年後... 白骨の神殿 (2026)

仕事が済んだら電話するよ

I’ll call you when I’m done with work.