Global prices remained steady for the weekend as international buyers continue to monitor the winter outlook, but another potential disruption at Freeport LNG could help stoke anxiety.

Nominated flows of feed gas to the facility on the Gulf South Pipeline system, Freeport’s primary supply route, dropped to 54% of design capacity on Thursday and remained reduced before recovering to near-average levels on Sunday, according to pipeline data from Wood Mackenzie.

On Monday morning, Gulf South Pipeline LP, a unit of Boardwalk Pipeline Partners LP, published an additional operational alert notifying customers of a “failure to take confirmed quantities” to Freeport and that nominations had been revised to zero for the day. It also warned that the notice could be effective until...