airfare
airway
blue
boarding
certificate
citizen
citizenship
color
cover
design
destination
document
documentation
effect
flat
flight
flying
globe
icon
id
identification
identify
identity
illustration
immigration
international
isolated
journey
object
official
page
paper
pass
passenger
passport
pictogram
picture
public
realistic
security
shadow
sign
simple
symbol
tourism
transportation
travel
trip
vacation
vector