RTD AB Bus ($10.50)
The most affordable option. RTD's AB bus runs directly from DIA to downtown Boulder.
- Departs from Transit Center at DIA
- Runs roughly every hour (less frequent late night)
- Takes about 75 minutes
- Stops at Downtown Boulder Station
- Purchase tickets at DIA Transit Center or RTD app
Tip: From Downtown Boulder Station, local buses or a short Uber can get you to your final destination.
Uber/Lyft ($50-75)
Best balance of convenience and cost for most travelers. Door-to-door service in about 45 minutes.
- Pick up at Level 5, Island 6
- Usually 5-10 minute wait
- Direct to any Boulder address
- Prices vary with demand (surge pricing)
Note: Peak times (CU move-in, major events) can see prices spike to $100+.
Green Ride Boulder ($35-45/person)
Shared shuttle service focused on the Boulder route. Good middle ground between bus and private car.
- Scheduled departures throughout the day
- Door-to-door service in Boulder
- Book online in advance
- Good for solo travelers wanting more comfort than the bus
Private Car/Sedan ($120-180)
For a short trip like Boulder, private cars are a premium option but offer the most comfort.
- Meet-and-greet service
- Professional drivers
- Guaranteed vehicle and pricing
- Good for business travelers or special occasions
Rental Car ($50-100/day)
Makes sense if you'll need a car in Boulder for hiking, mountain access, or multi-stop trips.
- Boulder is fairly walkable/bikeable
- Good local bus system (free within Boulder)
- Car useful for accessing Chautauqua, trailheads, Estes Park
- Parking can be challenging downtown