| SeaTac to Leigh | 4,622.57 mi (7,439.31 km) |
| SeaTac to Leigh-on-Sea | 4,811.16 mi (7,742.81 km) |
| SeaTac to Leighton Buzzard | 4,756.30 mi (7,654.52 km) |
| SeaTac to Leith | 4,474.71 mi (7,201.36 km) |
| SeaTac to Lemington | 4,564.48 mi (7,345.82 km) |
| SeaTac to Leominster | 4,684.26 mi (7,538.59 km) |
| SeaTac to Lerwick | 4,304.66 mi (6,927.68 km) |
| SeaTac to Letchworth | 4,764.27 mi (7,667.35 km) |
| SeaTac to Leven | 4,467.88 mi (7,190.37 km) |
| SeaTac to Lewes | 4,830.96 mi (7,774.68 km) |
| SeaTac to Leyland | 4,607.47 mi (7,415.00 km) |
| SeaTac to Leyton | 4,792.18 mi (7,712.27 km) |
| SeaTac to Lichfield | 4,684.20 mi (7,538.48 km) |
| SeaTac to Lincoln | 4,688.31 mi (7,545.11 km) |
| SeaTac to Linlithgow | 4,463.61 mi (7,183.48 km) |
