What are the most popular routes to Duncan?
| Daytona Beach - Duncan | Average priceR 3 811 | Average duration2d 19h | Daily departures3 | |
| Oklahoma City - Duncan | Average priceR 2 780 | Average duration1d 2h | Daily departures1 | |
| Phoenix - Duncan | Average priceR 625 | Average duration4h 20m | Daily departures2 | |
| Orlando - Duncan | Average priceR 4 291 | Average duration2d 2h | Daily departures2 | |
| Dallas - Duncan | Average priceR 3 821 | Average duration21h 50m | Daily departures2 | |
