Are the corners of my forehead suitable for hair transplant? (Photo)

You can transplant hair to almost any part of your body.  It if is right for you depends on an examination by a doctor an your understanding of what is possible (realistic expectation weighed in with your goals) and how much more hair loss you may lose in the future.

You are really young...  The issue is that hair loss is usually a progressive change, meaning it gets worse over time.  Are you really losing your hair or do you just not like your hairline?  If you just want to change your hairline, go for it!  But, if this is something that is going to progress over time, you may want to be careful about doing transplants.  Look at the other men in your family, do they have hair?  The cost for a small area such as yours may be around $5000 or so, but it can vary widely.  See a hair surgeon in your area -- many also do on-line consultations, and discuss your case in person.  Good luck!

Most doctors do not do hair transplant  until the pattern of hair loss is established.  At this age you need to wait. If your hair loss continues then see a hair loss specialist to find the cause and treatment options. 

Your biggest enemy is the progressive balding
that you might have in the next 5 or so years. The degree of balding that you
are showing is very early and I would suggest that before you undertake a hair transplant, you see a doctor and get a diagnosis and then with a diagnosis of genetic balding,  try
the drug finasteride for one year. Get Bulk Measurements of your hair to
determine the degree of the progression or if you successfully stopped or
reversed it because you need to get insights into your immediate and long term
future. If you are developing a more advanced balding pattern which the Bulk
Measurements will show over a one year time frame, then you and your doctor
need to develop a MASTER PLAN.