My new employer has told me to book flights & they will reinburse when given receipts upon arrival. My question is, when booking flights, do you generally book return flights or just the outgoing flight? Obviously a return usually works out cheaper but at this point in time, I'm unsure of what date I would like to book the return date for. Also, would it be frowned upon if I bought a more expensive ticket (but still within the allowance budget) so that I could take additional luggage with me? I also get a shipping allowance in addition to my yearly flight allowance so would use that to ship items that I won't need immediately. Thanks in advance for any advice given.