Navigating transit from Denver International Airport to downtown doesn't require guesswork. The RTD A Line connects Denver International Airport directly to Denver Union Station in roughly 37 minutes, bypassing highway traffic entirely. Whether you're landing for a weekend trip or catching an early international flight, knowing the exact schedule, ticket costs, and station logistics saves time and eliminates stress.
Trains operate seven days a week, starting early in the morning and running past midnight. Departures happen every 15 minutes during peak hours and every 30 minutes during early morning and late night blocks. A standard one-way airport fare costs $10, which covers travel across all zones between the terminal and downtown.
Understanding the RTD A Line Train Schedule
The commuter rail runs a reliable daily schedule designed to match flight patterns. Trains begin rolling around 3:00 AM from both ends of the line, with the final departures stretching past midnight.
During peak travel windows—typically from early morning through the evening—trains arrive every 15 minutes. If you travel outside these core hours, expect a 30-minute headway. You don't need to print a physical timetable because digital arrival boards at every station display real-time countdowns. Smartphone transit apps also sync directly with Regional Transportation District tracking feeds for live updates.
- Peak Hours (15-minute frequency): Generally runs from early morning through mid-evening.
- Off-Peak Hours (30-minute frequency): Early mornings before 5:00 AM and late nights after 8:00 PM.
- Total Trip Duration: Exactly 37 minutes from Denver International Airport Station to Union Station.
Ticket Pricing, Fares, and Where to Buy
Riding the train requires a valid pass before you board. Fare inspectors check tickets randomly onboard or at terminal gates, and riding without proof of payment results in steep fines.
A standard one-way ticket between Denver International Airport and any other station costs $10. If you only travel between local suburban stations along the route, lower local fares apply. You can purchase tickets using several convenient methods:
- Ticket Vending Machines: Located at every station platform. They accept cash, credit cards, and debit cards.
- Mobile Ticketing Apps: Download the official RTD MyRide app to buy and activate digital tickets on your phone.
- Smart Cards: Frequent local riders use the MyRide card to tap on and off, which automatically calculates the lowest fare.
Complete Station List and Route Overview
The 23-mile commuter rail corridor features eight total stations. The route bridges the eastern plains and the airport directly into the heart of LoDo (Lower Downtown Denver).
Starting from downtown, the train moves through major residential and commercial hubs before hitting the airport property. Each platform features high-level boarding, meaning the train floor matches the platform height for easy rolling with luggage.
- Denver Union Station (Downtown Denver terminus)
- 38th & Blake Station
- 40th & Colorado Station
- Central Park Station
- Peoria Station
- 40th Ave & Airport Blvd & Gateway Park Station
- 61st & Peña Station
- Denver International Airport Station (Terminal transit center)
Luggage, Accessibility, and Station Navigation
Air travelers often worry about space constraints on commuter trains. The cars on this line feature specialized infrastructure built explicitly for travelers carrying bags.
You won't find cramped seating or narrow aisles here. Each railcar includes designated overhead luggage racks, floor-level luggage towers, and open multi-use spaces. Bikes also travel free, with dedicated hooks inside every car.
- Finding the Station at DIA: Follow the overhead terminal signs toward the Westin Denver International Airport Hotel. The train station sits directly outside the main Jeppesen Terminal doors at ground level.
- Accessibility: Elevators, escalators, and level boarding ramps make the entire route friendly for wheelchairs, strollers, and heavy bags.
Common Mistakes to Avoid
Travelers occasionally run into avoidable hiccups when using the rail line for flight connections. Keep these pitfalls in mind to ensure a smooth trip.
- Forgetting to Validate: If you buy a paper ticket from a machine, make sure it is valid for the correct zone. Mobile tickets must be activated on your screen before you step onto the train platform.
- Cutting Timing Too Close: While the train takes 37 minutes, always factor in the walk from the airport gates through baggage claim to the transit station, which can add an extra 15 to 20 minutes.
- Ignoring Late-Night Schedules: If your flight lands after midnight, verify the last departure time. Missing the final train means switching to expensive rideshare options or taxis.
Frequently Asked Questions
Where do I catch the train at Denver International Airport?
Walk out of the main terminal baggage claim area toward the iconic transit center plaza. The station sits right outside the hotel structure, accessible via escalators or elevators.
Can I use a standard local bus pass for the airport train?
Standard local day passes do not cover trips all the way to the airport. You need an airport-specific ticket or regional pass to cover the final zone out to Denver International Airport.
Is the train running 24 hours a day?
No. Service pauses during the overnight hours. Trains typically stop running around 1:00 AM and resume operations around 3:00 AM.
How early should I catch the train for an outbound flight?
Aim to arrive at the airport at least two hours before domestic flights and three hours before international flights. Work backward from that arrival target using the 37-minute train duration.
