Highly Traveled Commercial Airline Routes in 2017–18
| Location 1 | Location 2 | Distance of route (kilometers) | 2018 passengers | 2017 passengers | Type |
|---|---|---|---|---|---|
| Mexico City | Guadalajara | 466 | 3,170,177 | 2,996,806 | domestic |
| Hong Kong | Seoul-Incheon | 2,080 | 3,081,942 | 3,198,132 | international |
| Kuala Lumpur | Singapore | 296 | 4,490,463 | 4,108,824 | international |
| Hanoi | Ho Chi Minh City | 1,171 | 6,867,114 | 6,769,823 | domestic |
A study of commercial airline routes that carried the greatest number of passengers in 2017 and 2018 shows that, in general, domestic routes (routes within a single country) carried many more passengers than international routes. However, a few international routes were so famous that they carried more travelers than some of the most highly traveled domestic routes, as can be seen when comparing the __________