I would like to find a reasonably priced flight cage that is at least 9 feet long.?

Question

It's for budgies, so doesn't need to be one of the heavy, expensive ones for parrots.

Answer 1

My custom built flight cages were $150.  1/2" x 4" galvanized wire w/pullout under tray, 4'x4'x2'.  At 9' you might be looking at a site built aviary.