What are the most popular routes to Dubuque?
| Iowa City - Dubuque | Average priceCOP 268,835 | Average duration5h 35m | Daily departures3 | |
| Champaign - Dubuque | Average priceCOP 358,101 | Average duration7h 10m | Daily departures1 | |
| Omaha - Dubuque | Average priceCOP 641,426 | Average duration18h 30m | Daily departures1 | |
| Denver - Dubuque | Average priceCOP 687,999 | Average duration19h 10m | Daily departures1 | |
| Naperville - Dubuque | Average priceCOP 342,577 | Average duration3h 40m | Daily departures1 | |