Getting downtown from Denver International Airport doesn't have to mean sitting in I-70 traffic or paying steep rideshare surges. The fastest and most reliable way to make the trip is the Regional Transportation District commuter rail, commonly known as the University of Colorado A Line. This direct train from Denver Airport to Union Station whisks you right into the heart of the city in just 37 minutes, bypassing highway congestion entirely.
Whether you're visiting for a weekend or returning home, navigating the airport rail system is straightforward once you know the basics. From ticket purchasing options to exact station locations, here is everything you need to navigate the route like a local.
Finding the Train Station at Denver International Airport
After you land, grab your bags and head toward the main terminal. You'll want to exit the secure area and follow the overhead signs pointing toward the Transit Center or the train symbol.
The station sits just outside the Jeppesen Terminal, directly adjacent to the Westin Denver International Airport Hotel. You don't even have to step outside into Colorado's unpredictable weather; simply take the escalators or elevators down to ground level and cross the plaza into the open-air transit hall.
Ticket Pricing, Purchase Options, and Validation
A one-way ticket between the airport and Union Station costs $10. This specific airport fare covers all zones for your trip.
You can buy tickets using a few different methods:
- Mobile App: Download the RTD MyRide app on your smartphone before you arrive. It's the fastest way to purchase and store tickets digitally.
- Station Kiosks: Touchscreen ticket vending machines sit directly on the rail platforms. They accept credit cards, debit cards, and cash.
- Retail Outlets: You can purchase passes at designated transit sales counters inside major transit hubs.
Make sure you buy your ticket before boarding the train. While conductors occasionally check tickets on board, platform fare inspectors routinely check passengers. Keep your active mobile ticket or paper receipt ready to scan or show upon request.
A Line Schedule, Frequency, and Travel Time
Trains run with impressive consistency throughout the day, meaning you rarely have to check a strict timetable before heading to the platform.
During peak morning and evening hours—typically from 4:15 a.m. to 6:30 p.m.—trains arrive every 15 minutes. Early morning and late-night departures shift to a 30-minute frequency. The entire 23-mile journey takes exactly 37 minutes from end to end, making it remarkably easy to time your arrival if you have a meeting or a hotel check-in downtown.
The train makes six intermediate stops along the way:
- 61st & Peña
- 40th Ave & Airport Blvd – Gateway Park
- Peoria
- Central Park
- 40th & Colorado
- 38th & Blake
You don't need to press any buttons to get off at Union Station; it is the final terminus for the line.
Arriving at Denver Union Station
Stepping off the train brings you directly to Denver Union Station, located at 1701 Wynkoop Street in Lower Downtown (LoDo). The historic 1914 Beaux-Arts station building has been transformed into a bustling hub featuring local restaurants, cocktail bars, and coffee shops.
From Union Station, you have immediate access to several other transit options if your final destination isn't within walking distance:
- Free MallRide: Catch the free shuttle bus right outside on the 16th Street Mall corridor to navigate downtown easily.
- Light Rail: Connect to regional light rail lines (such as the D, E, or H lines) heading toward sports stadiums or the Denver Tech Center.
- Rideshares and Taxis: Designated pickup zones make it simple to grab an Uber, Lyft, or traditional cab for the final leg of your journey.
Luggage and Accessibility Features
Navigating public transit with heavy bags can be stressful, but the A Line cars are designed with travelers in mind. Each car features dedicated overhead storage racks, floor-level luggage towers, and designated bicycle racks.
The trains also offer completely level boarding at all doors, eliminating steps or gaps that make rolling heavy suitcases difficult. Elevators and escalators connect every platform seamlessly, accommodating travelers with wheelchairs, strollers, or heavy gear. You can check current service alerts and accessibility updates directly on the Regional Transportation District website.
Common Mistakes to Avoid
Even seasoned travelers occasionally trip up on transit systems. Keep these pitfalls in mind to ensure a smooth ride:
- Forgetting to buy tickets beforehand: There are no gates blocking platform access, which tricks some visitors into thinking the ride is free. Buying tickets on the train isn't always possible, and inspectors issue citations for fare evasion.
- Misjudging luggage space during peak hours: While luggage towers exist, rush hour commutes can crowd the cars. Keep bags close to your seat so aisles remain clear for boarding passengers.
- Ignoring the return schedule: If you have an early morning flight out of DEN, check the late-night timetable ahead of time, as train frequencies drop to every 30 minutes past 6:30 p.m.
Frequently Asked Questions
Can I use a standard local bus ticket for the airport train?
No. Standard local fares ($3.00) do not cover trips to Denver International Airport. You need an Airport Day Pass or a specific $10 airport fare to ride the A Line all the way to the terminal.
Are pets allowed on the A Line train?
Yes, well-behaved dogs are allowed on RTD trains as long as they are on a leash or inside a secure carrier. Standard transit rules require pets to remain out of the aisles and under your control at all times.
Is Wi-Fi available on the train?
While RTD does not provide complimentary public Wi-Fi on the A Line cars, cellular data coverage is strong throughout almost the entire 23-mile outdoor route, including underground and urban segments.
What happens if there is a service delay?
Severe weather or maintenance can occasionally disrupt rail service. When delays happen, RTD typically deploys bridge buses to ferry passengers between affected stations. Always check real-time transit status apps before heading to the platform if weather conditions look severe.
