Fuel Prices: Higher jet fuel costs significantly impact IAG's profitability, reducing earnings and potentially lowering the stock price.

Economic Growth: Strong economic conditions generally lead to increased travel demand, boosting IAG's revenues and potentially increasing its stock price.

Competition: Intense competition from other airlines can pressure IAG to lower fares, decreasing profits and possibly lowering the stock price.

Exchange Rates: Fluctuations in currency exchange rates, especially between the British pound, Euro, and US dollar, impact IAG's revenue and costs, affecting profitability and the stock price.

Regulatory Changes: New regulations related to aviation safety, emissions, or passenger rights can increase IAG's operating costs and possibly lower the stock price.

Geopolitical Events: Major global events like political instability, terrorist attacks, or pandemics can significantly reduce travel demand and adversely affect IAG's stock price.

Company Performance: IAG's financial results, including revenue, profitability, and passenger numbers, directly influence investor sentiment and the stock price.