Delta has a sweet perk for travelers from Los Angeles: if you fly Business Class to London Heathrow on Delta’s code-share partner Air France, you get free chauffeur service to and from the London airport.

It’s only good through May 30, but you can still get this service even if you’ve already purchased your tickets. Here’s what you do:

• Book your chauffeur and flight reservations simultaneously by contacting Delta Reservations at 1-800-221-1212
• Coordinate chauffeur service with your existing Business Class flight reservation by dialing the Delta Chauffeur Service Desk at 1-800-268-0555

Unfortunately, the chauffeur service is not available on the Los Angeles end of the trip.