Some airlines might occasionally check your documents regarding a valid visa for the country you wish to enter. Please remember that the airlines are responsible for transporting passengers if entry to the next country is denied. Therefore, the airlines might require proof of the duration of your stay and onward travel. You might have to present a return ticket, an onward ticket, or (if lucky) only a hotel reservation. The airline can deny the boarding if you cannot show such documentation. 12Go encourages customers to check all visa and airline requirements before they book an international route.