Virgin business class flights for next week are $1,700 each one way - flights are usually more expensive the closer to departure date that you purchase them. But that's about $6,000 one way for 4 people for a flight that is often less than 6 hours - not sure who the add on kids are and who paid for them. Why would you do that when you have a mortgage? Unless we see it, I will assume they're flying back economy.