CO2 capture technologies are essential to achieve the global goal of carbon neutral and carbon negative. Membrane separations are energy-efficient compared to the adsorption/absorption processes with sorbents/solvents. However, little attention has been given to CO2 separation from air (direct air capture: DAC) or cabin air by membranes. In this study, a thin film composite type of facilitated transport membrane (FTM) with a functionalized ionic liquid (IL) carrier is developed. The selective layer is an IL-rich gel nanoconfined within the graphene oxide nanosheet framework. High performance of CO2 carrier-facilitated transport at conditions relevant to DAC (3090 GPU and CO2/N2 selectivity of 1180) and cabin air (620 GPU and CO2/N2 selectivity of 250) was demonstrated at 295 K and 40% RH (1 GPU = 3.348 × 10-10 mol m-2 s-1 Pa−1). The coupled permeation and selectivity represent the best performing FTM known under DAC conditions and promise potential for CO2 separation from air. Display omitted •A composite membrane with ionic liquid carrier is developed for CO2/N2 separation.•CO2 permeance of 3090 GPU is achieved at 295 K, 40% RH with 410 ppm of CO2 feed.•A record breaking CO2/N2 selectivity of 1180 is demonstrated.•The inclusion of graphene oxide and poly(ionic liquid) enhanced membrane stability.•Membrane operates consistently over a 2-week long continuous separation.