- For most destinations there are special discounts for elderly, youth and discounts for ISIC i ITIC card owners
- Airports tax amounts are determined by the governments of countries you are traveling/passing through/ to
- Air-ticket price is also dependent on:

• date of purchase in regarding of date of beginning of your travel,
• duration of stay,
• travel season (high/low)

- For each destination and airline company  you should check whether there is possibility to change date of departure/return, possibility for refund, and what conditions must be met 
- Airports' and administrative taxes, insurance and other taxes (tax)