How do you say "excuse me," like when you are passing through a crowd or walking by someone?

Question

Answer

You can say one of these expressions ;

1) 죄송합니다, 좀 지나갈게요.  Excuse me, coming through.  *It's also okay to say only "죄송합니다". 
2) 좀 지나가도 될까요?  May I come through, please?
3) 잠깐만요/잠시만요. Wait a second.

Answer

죄송합니다
지나갈게요
잠깐만요

We use those expressions as Excuse me.
for me, I just say 잠깐만요~ㅋㅋ

Answer

There are several ways to say it
So there are no correct answers exactly
For me, i say , wait a minute i’m passing  잠시만요 지나갈게요.

잠시만 지나갈게요.
Or just 잠시만요 :)

If there are actions touching or made someone move 
Then i would say “sorry” 죄송합니다 잠시만 지나갈게요

Answer

As an American (not sure if it's different in other English speaking countries), that is exactly what I say, "excuse me." I may also say, "pardon me." Hope this helps. :)