1
general::
Reach an objective, as in We arrived at the party right on time, or It took Harry only a few minutes to arrive at a solution. [Early 1500s]
American Heritage Idioms
2
general::
Phrase(s): arrive (some place) at some time
to reach some place at a particular time. • We will arrive at the border at noon. • They arrived at seven o’clock in the evening.
McGrawhill's American Idioms And Phrasal Verbs