| SeaTac to Alenquer | 5,191.60 mi (8,355.07 km) |
| SeaTac to Alfena | 5,092.61 mi (8,195.77 km) |
| SeaTac to Alijo | 5,125.59 mi (8,248.84 km) |
| SeaTac to Aljustrel | 5,281.21 mi (8,499.28 km) |
| SeaTac to Almada | 5,206.27 mi (8,378.68 km) |
| SeaTac to Almargem | 5,193.51 mi (8,358.14 km) |
| SeaTac to Almeirim | 5,197.41 mi (8,364.42 km) |
| SeaTac to Amadora | 5,200.87 mi (8,369.98 km) |
| SeaTac to Amarante | 5,106.43 mi (8,218.00 km) |
| SeaTac to Amares | 5,079.03 mi (8,173.91 km) |
| SeaTac to Amora | 5,210.48 mi (8,385.46 km) |
| SeaTac to Anadia | 5,138.27 mi (8,269.25 km) |
| SeaTac to Angra do Heroismo | 4,531.55 mi (7,292.82 km) |
| SeaTac to Ansiao | 5,165.65 mi (8,313.31 km) |
| SeaTac to Anta | 5,101.46 mi (8,210.00 km) |
