Deductions & credits

Not actually sure how to substantiate the savings between the additional flight cost to the cost of hotel. I had 2 airfare tickets versus one room cost since my son and I shared a room. I would have had to take a snap shot of the my computer screen at the time of booking my flights since Airfare costs change by the day, month, season or even hour. May have to miss out on this one and keep that in mind for the future. Thank you Richard.  Was helpful information.