Singapore, congested country with (707 Km2) is larger than Bahrain (665 Km2)
Bahrain's landmass is actually on the increase because of continued land reclamation with projects such as Durrat Al Bahrain, Amwaj island, Bahrain Bay etc - but you can't compare the two based on geographic landmass.
Singapore has a thriving and diverse aviation industry. Does Bahrain?