Originally Posted by
Busboy
Wait...So, I could drive say from DFW to MSY for my trip, drive back to DFW at the end of the trip and 2 days later take a flt DFW to Rio and expense it as a deviation?

I'll assume your trip ended in MSY, if so no. But you could two days later drive to MSY and fly to Rio on the company dime. JMHO