The best price found from United States to Republic of Congo is on November 6th, 2016, travelling with Ethiopian Airlines. See more options, compare prices and book: search flights.
All airlines have offices at the airports in Brazzaville and Pointe-Noire, but it's easier to use their offices in town (if they have one) or a travel agency. The following are just the bigger international airlines.
Air France Flies direct to/from Europe to Brazzaville and Pointe-Noire.
Royal Air Maroc This airline's office is at Maya-Maya Airport in Brazzaville.