What are the most popular routes to Dubuque?
| Iowa City - Dubuque | Average priceCOP 270,871 | Average duration5h 35m | Daily departures3 | |
| Des Moines - Dubuque | Average priceCOP 298,245 | Average duration7h 15m | Daily departures1 | |
| Indianapolis - Dubuque | Average priceCOP 464,462 | Average duration9h 20m | Daily departures1 | |
| Omaha - Dubuque | Average priceCOP 646,284 | Average duration18h 30m | Daily departures1 | |
| Oskaloosa - Dubuque | Average priceCOP 407,741 | Average duration6h 15m | Daily departures1 | |