What are good options to gift someone an "airflight" voucher

[iwantavuvezela]

I want to buy someone a gift voucher for travel - I can see online that flight gift do this with loads of airlines - anyone used this??

www.flightgift.com/?gclid=EAIaIQobChMIhJishLKu_QIVM4BQBh3Z6AiPEAAYASAAEgJhYPD_BwE