| SeaTac to Amelia | 5,632.01 mi (9,063.84 km) |
| SeaTac to Anagni | 5,699.22 mi (9,172.01 km) |
| SeaTac to Ancona | 5,594.14 mi (9,002.89 km) |
| SeaTac to Andria | 5,806.86 mi (9,345.24 km) |
| SeaTac to Angri | 5,795.20 mi (9,326.48 km) |
| SeaTac to Anguillara Sabazia | 5,656.45 mi (9,103.18 km) |
| SeaTac to Anzio | 5,703.93 mi (9,179.59 km) |
| SeaTac to Anzola dell'Emilia | 5,481.80 mi (8,822.10 km) |
| SeaTac to Aosta | 5,313.92 mi (8,551.92 km) |
| SeaTac to Apricena | 5,752.64 mi (9,257.98 km) |
| SeaTac to Aprilia | 5,696.24 mi (9,167.21 km) |
| SeaTac to Aradeo | 5,916.40 mi (9,521.52 km) |
| SeaTac to Aragona | 5,974.78 mi (9,615.48 km) |
| SeaTac to Arco | 5,392.32 mi (8,678.10 km) |
| SeaTac to Arcola | 5,475.16 mi (8,811.43 km) |
