A portfolio of techniques can be used to project future air passenger or cargo traffic at an airport or within an airline.

Econometric models can be based on key underlying variables such as:

• Future national or regional GDP growth
• Propensity to fly
• Projected air fares
• National or regional population growth etc.

and can be calibrated against existing data and market trends.

Further analysis can be used to assess:

• The future impact of new airport development
• The expected market share against other airports
• The future composition of the airline market and the impact of airline    alliances