What are the most popular routes to Duncan?
| Daytona Beach - Duncan | Average pricePEN 798 | Average duration2d 19h | Daily departures3 | |
| El Paso - Duncan | Average pricePEN 128 | Average duration4h 30m | Daily departures1 | |
| Dayton - Duncan | Average pricePEN 784 | Average duration1d 21h | Daily departures2 | |
| Phoenix - Duncan | Average pricePEN 131 | Average duration4h 20m | Daily departures2 | |
| Oklahoma City - Duncan | Average pricePEN 1 003 | Average duration1d 2h | Daily departures1 | |
