Does this flight exist? VS91

Looking to book return flights from LHR (preferably) to MCO for next year.
I've always booked via VA.com but direct flights aren't showing on there. It's really pushing for 1 stop flights. I'm keen to book now for various reasons, can anyone help me find out about VS91. It seems to be a number from a discontinued route. It is visible on expedia. I've also tried Virgin Holidays (who I wouldn't book through but just for comparisons sake) and I can't see it there. Delta doesn't have it either but KLM does.
So , whilst the price is good, should I book on expedia and keep my fingers crossed? It wouldn't be the end of the world if they switched it to LGW in future, but I really want to fly direct.
I've always booked via VA.com but direct flights aren't showing on there. It's really pushing for 1 stop flights. I'm keen to book now for various reasons, can anyone help me find out about VS91. It seems to be a number from a discontinued route. It is visible on expedia. I've also tried Virgin Holidays (who I wouldn't book through but just for comparisons sake) and I can't see it there. Delta doesn't have it either but KLM does.
So , whilst the price is good, should I book on expedia and keep my fingers crossed? It wouldn't be the end of the world if they switched it to LGW in future, but I really want to fly direct.