long haul sectors ( ocean crossings)
        
http://en.wikipedia.org/wiki/List_of_low-cost_airlines
http://wikitravel.org/en/Budget_airlines


Europe
  RyanAir
  TUIfly
  Sky Europe
  Wizz Air
  Transavia
  MyAir
  Easy Jet
  ThomsonFly
  

Middle East - South Asia
  Air Arabia
  Air India Express
  Jazeera

North America
  WestJet
  Zoom

North America - Europe
  Zoom
  

South America
  Mercosur air pass
  One World "Visit South America" Pass
  

South Asia
  Air India Express
  Go Air
  Spice Jet
        
South Asia-East Asia
  flyyeti.com
  tigerairways
  air india express

East Asia
tiger airways


East Asia - Australia
Air Asia (limited)
Tiger
Jetstar Asia

Australia - North America
Jetstar (limited)


Australia
Tiger Airways
Jetstar
Virgin Blue
Air Asia (limited)