| Partner country GDP | -8.57 | 7.82 | -1.10 | 0.28 |
| Partner country GDP per capita | -3.98 | 1.30 | -3.06** | 0.00 |
| Korea GDP | 9.98 | 8.67 | 1.15 | 0.25 |
| Korea GDP per capita | 5.04 | 1.35 | 3.72** | 0.00 |
| Korea exchange rate | 0.207 | 0.781 | 0.27 | 0.79 |
| Partner country exchange rate | 0.657 | 0.387 | 1.74 | 0.08 |
| International oil prices | -0.112 | 0.111 | -0.02 | 0.98 |
| Flight distance | -32.08 | 13.61 | -2.36* | 0.02 |
| Partner country population | -29.69 | 24.18 | -1.23 | 0.22 |
| Partner country area | -2.90 | 3.23 | -0.90 | 0.36 |
| Number of airports in partner country | 22.7 | 9.65 | 2.35** | 0.01 |