| Omaha to Arcos de Valdevez | 4,312.28 mi (6,939.94 km) |
| Omaha to Arcozelo | 4,331.74 mi (6,971.26 km) |
| Omaha to Arganil | 4,388.79 mi (7,063.08 km) |
| Omaha to Arouca | 4,353.62 mi (7,006.47 km) |
| Omaha to Arruda dos Vinhos | 4,390.00 mi (7,065.02 km) |
| Omaha to Aveiro | 4,346.91 mi (6,995.67 km) |
| Omaha to Aver-o-Mar | 4,313.21 mi (6,941.45 km) |
| Omaha to Aves | 4,332.45 mi (6,972.40 km) |
| Omaha to Azambuja | 4,395.85 mi (7,074.44 km) |
| Omaha to Baiao | 4,354.25 mi (7,007.50 km) |
| Omaha to Barcelos | 4,315.75 mi (6,945.53 km) |
| Omaha to Barreiro | 4,401.94 mi (7,084.23 km) |
| Omaha to Batalha | 4,376.92 mi (7,043.97 km) |
| Omaha to Beja | 4,479.56 mi (7,209.16 km) |
| Omaha to Belas | 4,388.58 mi (7,062.74 km) |
