Northwest, Inc. v. Ginsberg

*276 We must decide in this case whether the Airline Deregulation Act pre-empts a state-law claim for breach of the implied covenant of good faith and fair dealing. Following our interpretation of the Act in American Airlines, Inc. v. Wolens, 513 U.S. 219 , 115 S.Ct. 817 , 130 L.Ed.2d 715 (1995), we hold that such a claim is pre-empted if it seeks to enlarge the contractual obligations that the parties voluntarily adopt. And because the doctrine is invoked in the present case in an attempt to expand those obligations, we reverse the judgment of the Court of Appeals.

I

A

*277 Like many airlines,…