What are the most popular routes to Dubuque?
| Iowa City - Dubuque | Average priceR 1 228 | Average duration5h 35m | Daily departures3 | |
| Champaign - Dubuque | Average priceR 1 635 | Average duration7h 10m | Daily departures1 | |
| Chicago - Dubuque | Average priceR 1 228 | Average duration4h 30m | Daily departures1 | |
| Omaha - Dubuque | Average priceR 2 928 | Average duration18h 30m | Daily departures1 | |
| Oskaloosa - Dubuque | Average priceR 1 848 | Average duration6h 15m | Daily departures1 | |