Originally Posted by BillyIdol

I want to buy an economy ticket on United.com and then upgrade (i.e. pay the difference) to a business class ticket.

My company will reimburse me for the cost of the economy ticket, I'm paying for the upgrade myself.

I need a receipt of the cost of the economy ticket.

How can I get this receipt if I buy the ticket on united.com?

In the past, I don't remember getting a receipt when I've purchased tickets on United.com and I think that if I get a receipt at the airport, it would be for the business class ticket cost.

Thanks,