ORD's clear standout if your ticket grants entry: arrive early enough to eat and shower.

Convenient because there are three locations, but the standard Admirals Club experience is functional rather than memorable.

American’s premium T3 room at Concourse H/K. Official hours 4:15 a.m.–10:45 p.m. Not a standard oneworld Sapphire or Admirals Club membership room.

Strongest T5 Priority Pass room with hot/cold buffet. The noon–17:00 PP lockout is real — use Wingtips or Swissport in that window.

A useful Terminal 5 refuge for eligible Delta and SkyTeam travelers, especially because the terminal otherwise has few broadly accessible options.

A compact airline lounge that is most useful when departing on LOT; expectations should be modest.

Basic T5 contract lounge. Live Priority Pass lists 07:00–00:00, 3-hour max stay, and capacity restrictions especially 15:00–20:30. Follow the live PP map (M13 / across from Delta).