Forest River, the company that manufactures the Flagstaff line of travel trailers, has an online tool for finding local dealers. Enter a ZIP code or city and state to find nearby dealers. Select Travel Trailers under product type or one of the three Flagstaff product lines to narrow the results.
It is best to buy a trailer locally because this makes delivery simple. Using an official dealer helps to ensure that the trailer is in good condition. Alternatively, Craiglist's RVs+Camp section provides a listing of second-hand trailers. Another option is to search for local RV and camping shows. Multiple dealers attend these to show off their offerings.