| Chicago to Alenquer | 3,988.83 mi (6,419.41 km) |
| Chicago to Alfena | 3,936.40 mi (6,335.02 km) |
| Chicago to Alijo | 3,982.63 mi (6,409.42 km) |
| Chicago to Aljustrel | 4,068.34 mi (6,547.36 km) |
| Chicago to Almada | 3,995.15 mi (6,429.57 km) |
| Chicago to Almargem | 3,984.06 mi (6,411.72 km) |
| Chicago to Almeirim | 4,002.13 mi (6,440.80 km) |
| Chicago to Amadora | 3,989.81 mi (6,420.98 km) |
| Chicago to Amarante | 3,956.21 mi (6,366.90 km) |
| Chicago to Amares | 3,932.35 mi (6,328.50 km) |
| Chicago to Amora | 3,998.86 mi (6,435.55 km) |
| Chicago to Anadia | 3,967.94 mi (6,385.78 km) |
| Chicago to Angra do Heroismo | 3,129.90 mi (5,037.09 km) |
| Chicago to Ansiao | 3,985.70 mi (6,414.37 km) |
| Chicago to Anta | 3,939.67 mi (6,340.28 km) |
