Delta with Virgin Booking Check In

Hi everyone, wondered if anyone can help, I'm flying Delta to Vegas (via Minneapolis). I booked the flights through Virgin and have a VS flight number but I know both flights are actually on Delta metal. When I get to Heathrow do I still check in with Virgin?

Delta and VS are now both located in T3 Zone A so you can check in there.

Have a fun trip.

As a rule you check in with the airline that's actually operating the flight so in your case you would check in with Delta.

As RyanJW correctly says though, at LHR they're co-located so it's not an issue.

Thanks both for your help!