遅れてごめんなさい。
Please excuse me for being late.
I apologize for the delay.
I'm dreadfully sorry to be late.
I'm sorry. I came late.
Please excuse me for coming late.
I am sorry for being late.
I am sorry to be so late.
お便りが遅れてごめんなさい。
I am sorry for the late message.
I am sorry for my late reply.
I must apologize for the delay.
遅れてごめんなさい。
Forgive me for being late.
Forgive me for being late.
I apologize for the delay.
I must apologize for the delay.
Forgive me for being late.
Forgive me for being late.