do I have to pay to make a flight reservation?
I  want to book my flights to go to Brazil now but I will be leaving only  in January. Do I have to pay for it in advance? Can I make a reservation  now and pay in cash later? I don't have a credit card, but I know I  will have all the money I need in January. 
Air Travel - 4 Answers
Random Answers, Critics, Comments, Opinions :
1 :
If you deal through a travel agent, you can make the reservation but not pay until later. Explain your situation to them, they will work with you.  AND,  they will try to get you the best fare.  Happens all the time.
2 :
if your booking online, you have to pay in advace. if your booking through a travel agent then you can pay later
3 :
Some  airlines do have an option to pay later. I know US Airways has a "bill  me later" service they advertise every time you book a ticket online.  However, I'm fairly certain it's really just a convenience service  through a financial institution. I'm sure there are some hefty financing  charges too. You can always try taking a small loan out from your bank.
4 :
i do not think so
