Hmmm. the song that comes to mind has this chorus:

We'll meet again, don't know where, don't know when,
But I know we'll meet again, some sunny day.
Keep smiling through, just like you always do,
'Til the blue skies drive the dark clouds far away.

Complete lyrics are in our Digital Tradition Folk Song database here (click).
Is that the song you're seeking?
-Joe-

My other guess would be Somewhere (click), from West Side Story:

There's a place for us
Somewhere a place for us
Peace and quiet and open air
Wait for us
Somewhere...

I think it's got the phrase 'we'll meet again' implied somewhere....