Highly Traveled Commercial Airline Routes in 2017–18
| Location 1 | Location 2 | Distance of route (kilometers) | 2018 passengers | 2017 passengers | Domestic or international |
|---|---|---|---|---|---|
| Hong Kong | Manila | 1,145 | 3,008,842 | 2,907,228 | international |
| Jakarta | Singapore | 896 | 4,812,342 | 4,810,602 | international |
| Mumbai | Delhi | 1,150 | 7,392,155 | 7,129,943 | domestic |
| Mexico City | Monterrey | 729 | 3,474,971 | 3,202,091 | 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 popular that they carried more travelers than some of the most highly traveled domestic routes, as can be seen when comparing the