The register
The register lists Delta Air Lines Inc in Hammersmith as a licensed sponsor on Global Business Mobility: Senior or Specialist Worker and Skilled Worker, 2 routes in all, and has done since at least 2026. Rating on the current register: Worker (A rating).
At Companies House the business is Delta Air Lines, Inc. (company number FC005586), a overseas company incorporated in 1978, 48 years ago. Registered office: Delta Air Lines, Inc, 1030 Delta Blvd, Atlanta, Georgia 30354.
A licence says an organisation may sponsor; it does not say it is hiring today. The way to find out is the same as for any employer: the careers page, the job boards, and a direct approach with a UK-style CV that says early that sponsorship would be needed.