| SeaTac to Lagoa | 5,313.17 mi (8,550.71 km) |
| SeaTac to Lagoa | 4,639.09 mi (7,465.90 km) |
| SeaTac to Lagos | 5,306.99 mi (8,540.77 km) |
| SeaTac to Lamego | 5,123.78 mi (8,245.93 km) |
| SeaTac to Leiria | 5,161.99 mi (8,307.42 km) |
| SeaTac to Lisbon | 5,204.18 mi (8,375.31 km) |
| SeaTac to Loule | 5,327.98 mi (8,574.55 km) |
| SeaTac to Loures | 5,197.88 mi (8,365.18 km) |
| SeaTac to Lourinha | 5,172.13 mi (8,323.74 km) |
| SeaTac to Lousa | 5,161.58 mi (8,306.76 km) |
| SeaTac to Lousada | 5,098.88 mi (8,205.86 km) |
| SeaTac to Macedo de Cavaleiros | 5,128.55 mi (8,253.60 km) |
| SeaTac to Mafamude | 5,096.48 mi (8,201.99 km) |
| SeaTac to Mafra | 5,186.46 mi (8,346.81 km) |
| SeaTac to Maia | 5,089.80 mi (8,191.25 km) |
