Boulder, Colorado, a city nestled at the foothills of the Rocky Mountains, is renowned for its natural beauty, vibrant cultural scene, and proximity to outdoor recreation opportunities. When planning a visit to Boulder, one of the first considerations is often the most convenient airport to use. The nearest airport to Boulder, CO, is the Denver International Airport (DEN), which is approximately 45 miles southeast of Boulder. This major international airport offers flights to numerous domestic and international destinations, making it a hub for travel to and from the region.
Denver International Airport (DEN) Overview

Denver International Airport is a significant transportation hub for the Rocky Mountain region, serving over 69 million passengers in 2020. It is operated by the City and County of Denver and is known for its unique tent-like structure, which provides a memorable arrival and departure experience. The airport features an extensive network of flights operated by major carriers such as United Airlines, American Airlines, Delta Air Lines, and Southwest Airlines, among others. With its comprehensive flight schedule and wide range of airlines, DEN provides convenient access to Boulder and the surrounding areas.
Traveling from Denver International Airport to Boulder
There are several options for traveling from Denver International Airport to Boulder, catering to different budgets and preferences. The most common methods include renting a car, using public transportation, or hiring a taxi/ride-sharing service. For those who prefer the flexibility of having their own vehicle, car rental companies such as Enterprise, Hertz, and Avis have desks at the airport. Public transportation options, including the Regional Transportation District (RTD) bus system and the University of Colorado Boulder’s Buff Bus, offer an affordable and environmentally friendly alternative. Lastly, services like Uber and Lyft, as well as traditional taxi companies, provide door-to-door convenience.
Transportation Method | Approximate Cost | Travel Time |
---|---|---|
Rental Car | $40-$100 per day | 45 minutes to 1 hour |
Public Transportation (RTD) | $9-$10 | 1 hour to 1 hour 15 minutes |
Taxi/Ride-Sharing | $60-$80 | 45 minutes to 1 hour |

Alternative Airports

While Denver International Airport is the most convenient option for traveling to Boulder, there are alternative airports in the region. These include the Fort Collins-Loveland Municipal Airport (FNL) and the Colorado Springs Airport (COS), which are located north and south of Denver, respectively. However, these airports typically offer fewer flight options and may require additional travel time to reach Boulder, making Denver International Airport the preferred choice for most travelers.
Conclusion on Airport Choices
In conclusion, Denver International Airport (DEN) is the nearest and most convenient airport for travelers to Boulder, CO, due to its extensive flight network, variety of transportation options to Boulder, and relatively short distance from the city. By understanding the travel options available from DEN, visitors can plan their trip to Boulder more effectively, ensuring a smooth and enjoyable journey to this vibrant city at the edge of the Rocky Mountains.
Key Points
- Denver International Airport (DEN) is the nearest major airport to Boulder, CO, located about 45 miles southeast of the city.
- DEN offers a wide range of domestic and international flights, making it a convenient hub for travel to Boulder.
- Travelers have several options for getting from DEN to Boulder, including renting a car, using public transportation, or hiring a taxi/ride-sharing service.
- Alternative airports, such as Fort Collins-Loveland Municipal Airport and Colorado Springs Airport, are available but may offer fewer conveniences and longer travel times to Boulder.
- Planning ahead and considering traffic conditions can help travelers choose the most convenient and cost-effective method for their journey from DEN to Boulder.
What is the closest airport to Boulder, CO?
+The closest airport to Boulder, CO, is the Denver International Airport (DEN), which is approximately 45 miles southeast of Boulder.
How do I get from Denver International Airport to Boulder?
+You can get from Denver International Airport to Boulder by renting a car, using public transportation like the RTD bus system, or hiring a taxi/ride-sharing service such as Uber or Lyft.
Are there any alternative airports near Boulder, CO?
+Yes, alternative airports include the Fort Collins-Loveland Municipal Airport (FNL) and the Colorado Springs Airport (COS), although they may offer fewer flights and less convenient transportation options to Boulder compared to DEN.