
For travelers arriving at Denver International Airport (DEN) and needing to connect to other parts of Colorado or beyond, accessing train services is a convenient and efficient option. The airport itself does not have a direct train station, but passengers can easily reach the nearby Denver Union Station via the University of Colorado A Line, a commuter rail service operated by the Regional Transportation District (RTD). This light rail line runs approximately every 15 minutes and takes about 40 minutes to travel between the airport and Union Station, located in downtown Denver. From Union Station, travelers can connect to Amtrak’s long-distance trains, such as the California Zephyr, or explore regional rail options to destinations like Boulder, Fort Collins, and more. Additionally, Union Station serves as a hub for local buses and other transit services, making it a central point for onward travel. Planning ahead by checking schedules and purchasing tickets in advance is recommended to ensure a smooth journey.
| Characteristics | Values |
|---|---|
| Train Name | University of Colorado A Line |
| Train Station at Airport | Denver Airport Station (located on airport property, underneath the Jeppesen Terminal) |
| Station Accessibility | Accessible via the Transit Center on Level 1 of the Westin Denver International Airport Hotel |
| Train Frequency | Every 15 minutes during peak hours, every 30 minutes during off-peak hours |
| First Train Departure | Approximately 3:30 AM from Denver Airport Station |
| Last Train Departure | Approximately 12:30 AM from Denver Airport Station |
| Travel Time to Downtown Denver | Approximately 37 minutes |
| Fare (One-Way) | $10.50 (as of 2023) |
| Payment Methods | Cash, credit/debit cards, RTD MyRide card, or mobile ticketing apps |
| Luggage Storage | Limited luggage racks available on the train |
| Connections | Connects to other RTD rail lines and bus routes at Union Station in downtown Denver |
| Operating Hours | 3:30 AM to 12:30 AM daily |
| Train Operator | Regional Transportation District (RTD) |
| Additional Services | Free Wi-Fi available on the train |
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What You'll Learn

RTD A Line Service
The RTD A Line is Denver's direct rail link between Denver International Airport (DEN) and downtown Denver, offering a seamless transition from air to ground travel. Operating daily from approximately 3:30 AM to 1:00 AM, the service runs every 15 minutes during peak hours and every 30 minutes during off-peak times. Trains depart from the airport’s underground station, accessible via a short walk from the terminal’s transit center on Level 1. This service eliminates the need for costly taxi rides or ride-shares, making it a budget-friendly option for travelers.
For first-time users, navigating the RTD A Line is straightforward. Purchase a ticket at the airport’s vending machines using cash or card, or use the RTD Mobile Ticketing app for contactless payment. A one-way fare costs $10.50, but discounted multi-ride passes are available for frequent travelers. The journey to downtown Denver takes about 40 minutes, with stops at key locations like Union Station, where connections to other RTD lines and regional transportation options are available. Keep in mind that trains have ample space for luggage, ensuring a comfortable ride.
Comparing the RTD A Line to other airport transportation options highlights its efficiency and reliability. Unlike ride-shares, which can be subject to surge pricing and traffic delays, the A Line operates on a fixed schedule and is unaffected by road conditions. It’s also more cost-effective than taxis, which can charge upwards of $50 for the same trip. For those renting cars, the A Line avoids the hassle of navigating unfamiliar roads and finding parking in downtown Denver. This makes it an ideal choice for both business and leisure travelers seeking convenience.
A practical tip for maximizing your RTD A Line experience is to plan your trip around the train schedule. While trains are frequent, missing one can add an unnecessary wait. Use the RTD Trip Planner tool or Google Maps to coordinate your arrival at the airport station. Additionally, consider traveling during off-peak hours for a quieter ride. If you’re heading to a specific destination beyond Union Station, research connecting bus or rail lines in advance to streamline your journey. With a little preparation, the RTD A Line becomes not just a transportation option, but a strategic travel tool.
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Airport Rail Station Location
The Denver Airport Rail Station, officially known as the University of Colorado A Line, is conveniently located on Level 5 of the airport’s Westin Hotel and Transit Center. This strategic placement ensures seamless connectivity between Denver International Airport (DEN) and downtown Denver, making it a vital hub for travelers. Passengers arriving at the airport can follow clear signage directing them to the transit center, where the rail station is easily accessible via escalators or elevators. This central location minimizes walking distances and streamlines the transition from air to rail travel.
For those unfamiliar with the layout, the rail station’s proximity to the Jeppesen Terminal—the airport’s main hub—is a significant advantage. Travelers can exit the terminal, cross the pedestrian bridge, and arrive at the station within minutes. This design prioritizes efficiency, allowing passengers to bypass traffic congestion and reach downtown Denver in approximately 37 minutes. The station’s integration with the airport’s infrastructure exemplifies thoughtful urban planning, catering to both locals and visitors alike.
A key feature of the Airport Rail Station is its accessibility for passengers with luggage or mobility challenges. Wide pathways, luggage-friendly escalators, and ample seating areas ensure a stress-free experience. Additionally, the station is equipped with ticket kiosks and staffed customer service desks, providing assistance for purchasing tickets or navigating the system. For tech-savvy travelers, the RTD Mobile Tickets app offers a contactless option to buy fares directly from smartphones, further enhancing convenience.
Comparatively, the Denver Airport Rail Station stands out among other airport transit systems due to its affordability and reliability. A one-way fare to downtown Denver costs just $10.50, significantly less than taxi or rideshare options. Trains operate frequently, with departures every 15 minutes during peak hours, ensuring minimal wait times. This combination of cost-effectiveness and efficiency makes the rail station an ideal choice for budget-conscious and time-sensitive travelers.
In conclusion, the Airport Rail Station’s location at Denver International Airport is a testament to its role as a gateway to the city. Its thoughtful design, accessibility features, and cost-effective service make it a standout option for travelers. Whether you’re visiting Denver for business or leisure, starting your journey at this rail station ensures a smooth and hassle-free transition from air to ground transportation.
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Ticket Purchase Options
At Denver International Airport (DEN), travelers seeking to use the train system, specifically the A Line to downtown, have multiple ticket purchase options tailored to convenience and flexibility. The most straightforward method is purchasing tickets directly at the airport’s train station kiosks, located near the baggage claim area on Level 5 of the Jeppesen Terminal. These kiosks accept credit/debit cards and dispense paper tickets, which must be validated before boarding. For cash users, a customer service desk nearby offers assistance, though card payments are the primary option at the kiosks.
For tech-savvy travelers, the RTD Mobile Ticketing App provides a seamless alternative. Available for iOS and Android, the app allows users to buy and store tickets digitally, eliminating the need for physical paper. Simply download the app, create an account, and purchase a ticket for the A Line. The app also supports multi-ride passes and monthly tickets, ideal for frequent visitors. However, ensure your phone is charged, as ticket validation requires a functioning device.
A lesser-known but cost-effective option is the RTD EcoPass, available to employees of participating businesses or students at affiliated institutions. This pass grants unlimited rides on all RTD services, including the A Line, and can be a significant savings for those eligible. Check with your employer or school to see if they offer this program. While not an immediate solution for spontaneous travelers, it’s a valuable long-term option for regular commuters.
Lastly, consider purchasing tickets online through the RTD website. This method allows you to print tickets at home or save them on your phone, though the mobile app remains the more user-friendly digital choice. Online purchases are particularly useful for groups, as you can buy multiple tickets at once. However, allow time for printing or ensuring digital access, as last-minute purchases at the airport kiosks are faster for individual travelers. Each option caters to different needs, ensuring accessibility for all types of passengers.
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Train Schedule & Frequency
The University of Colorado A Line, Denver's dedicated airport rail service, operates on a consistent schedule designed to accommodate both early arrivals and late departures. Trains depart Denver Airport Station approximately every 15 minutes during peak hours (5:00 AM to 9:00 AM and 2:00 PM to 6:00 PM) and every 30 minutes during off-peak hours, including late evenings and weekends. This frequency ensures minimal wait times for travelers, regardless of their flight schedule.
Analyzing the schedule reveals strategic timing to align with typical flight patterns. The first train departs the airport at 3:54 AM, catering to passengers on early morning flights, while the last train leaves at 10:54 PM, accommodating delayed arrivals. This 21-hour service window (3:54 AM to 1:00 AM) covers the majority of flight schedules, though travelers with red-eye flights should plan alternative transportation.
For those connecting to downtown Denver, the journey takes approximately 40 minutes, with trains making stops at key stations like Union Station. To maximize efficiency, passengers should check the RTD Trip Planner or the Transit app for real-time updates, as schedules may adjust during holidays or maintenance periods. Pro tip: Arrive at the station 10 minutes early to account for ticket purchase or baggage handling.
Comparatively, the A Line’s frequency outperforms many airport shuttles and ride-shares during peak hours, offering a reliable alternative without surge pricing. However, its fixed schedule requires more planning than on-demand services. For instance, missing a train during off-peak hours means a 30-minute wait, whereas ride-shares are immediately available. Travelers should weigh time sensitivity against cost when choosing this option.
Descriptively, the A Line’s schedule is a traveler’s ally, blending convenience with predictability. Imagine stepping off a long flight, navigating baggage claim, and boarding a train within minutes—no traffic, no haggling over fares. The rhythmic cadence of departures every 15 or 30 minutes mirrors the airport’s own pulse, ensuring a seamless transition from air to rail. For the prepared traveler, this schedule isn’t just a timetable; it’s a promise of efficiency.
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Connecting to Downtown Denver
Travelers arriving at Denver International Airport (DEN) often seek efficient ways to reach downtown Denver, and the University of Colorado A Line is the primary solution. This commuter rail service, operated by the Regional Transportation District (RTD), connects the airport directly to Denver Union Station in the heart of downtown. The journey takes approximately 40 minutes, covering 23.5 miles, and trains depart every 15 minutes during peak hours, ensuring convenience for most flight schedules.
To access the A Line, follow signs from any terminal at DEN to the Denver Airport Station, located on Level 1 of the Jeppesen Terminal. The station is clearly marked and easily accessible via elevators or escalators. Tickets can be purchased at vending machines on-site, with fares starting at $10.50 for a one-way trip. For frequent travelers, consider the RTD MyRide card, which offers discounted rates and eliminates the need for paper tickets.
A key advantage of the A Line is its seamless integration with downtown Denver’s transportation network. Upon arriving at Union Station, passengers can transfer to light rail lines, buses, or ride-shares to reach specific destinations. Union Station itself is a hub of activity, featuring restaurants, shops, and easy access to popular areas like the 16th Street Mall and LoDo (Lower Downtown). This connectivity makes the A Line not just a transit option, but a gateway to exploring the city.
For those traveling with luggage, the A Line is designed with practicality in mind. Trains feature designated spaces for bags, ensuring a comfortable journey. However, be mindful of rush-hour crowds, as space can become limited. Additionally, while the A Line operates from 3:30 a.m. to 12:30 a.m. daily, late-night arrivals may require alternative arrangements, such as taxis or rideshares.
In comparison to driving or taking a taxi, the A Line offers a cost-effective and stress-free alternative. Traffic congestion and parking fees in downtown Denver can add up quickly, whereas the train provides a fixed cost and avoids the unpredictability of road travel. For visitors prioritizing convenience and affordability, the A Line is the clear choice for connecting to downtown Denver from the airport.
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Frequently asked questions
Yes, Denver International Airport has an on-site train station called the Denver Airport Station, located on Level 1 of the Jeppesen Terminal.
The A Line of the Regional Transportation District (RTD) light rail system connects Denver Airport to downtown Denver, with stops at Union Station and other key locations.
Trains on the A Line run approximately every 15 minutes during peak hours and every 30 minutes during off-peak hours, including weekends and late nights.
The train ride from Denver Airport to downtown Denver (Union Station) takes approximately 37 minutes.











































