49 U.S.C. § 46309 — Concession and price violations

(a) Criminal Penalty for Offering, Granting, Giving, or Helping To Obtain Concessions and Lower Prices. An air carrier, foreign air carrier, ticket agent, or one of their officers, agents, or employees is fined under title 18 if they (1) knowingly and willfully offer, grant, or give — or cause to be offered, granted, or given — a rebate or other concession that violates this part; or (2) by any means, knowingly and willfully help or knowingly allow someone to get transportation or services covered by this part for less than the price that's legally in effect.

(b) Criminal Penalty for Receiving Rebates, Privileges, and Facilities. A person is fined under title 18 if, by any means, they (1) knowingly and willfully ask for, accept, or take a rebate off the legally set price for foreign air transportation of property, or a related service; or (2) knowingly ask for, accept, or take a privilege or facility that the Secretary of Transportation requires be listed in the tariff that applies to that foreign air transportation of property.