Sixt Car Rental at Denver International Airport (DEN): Rental Policies, Requirements, and Fleet Options

Sixt Rental Car Denver Airport is accessible to all renters at its off-airport location, at 23410 E 78th Ave, near the airport. The vehicle collection offers more than 40 models and around 15 categories of cars, with compact to premium vehicles. Renters can board the free shuttle from the terminal exit and reach the office. There are specific timings, between 5:30 a.m. and 2 a.m., daily. Apart from these, it remains closed, and pickups are not possible. But after-hours returns are available. 

Sixt Car Rental DEN Airport Location Details

This rental company is not situated within the Denver International Airport premises but at an off-airport location, a few miles from the main location. But sixt shuttles run all day and night to pick up and drop off renters. 

How to Reach Sixt from the DEN Terminal

• After landing, proceed to the DEN baggage claim area on the 5th floor. Find the Sixt shuttle stop at the North End of Island 4. 

• For the West Terminal (red), take the crosswalk near door 504 and turn right. For the East Terminal (blue), take the crosswalk near door 505 and turn left.

• Board the branded Sixt shuttle, which operates 24 hours daily and takes just minutes to reach the branch.

• Enter the flight number during booking so the Sixt team can be aware of delays and support arrival. This helps the counter hold the reservation if a flight is running late.

Returning a Vehicle: Return the vehicle to 23790 E 78th Ave, Denver, CO 80249. Refuel at the nearest station before returning. The return process is quick and easy and can be done outside opening times. To be safe, arrive 30 minutes before renters need to be at the terminal. A free shuttle takes renters back to the departures level after return.

Vehicle Fleet at Sixt DEN Airport

Sixt offers a variety of cars with 40 models across 15 groups, including Economy, Luxury, and Convertible cars. Reservations are by vehicle category, not by an exact model. When a “guaranteed model” option is shown for dates and location, selecting it reserves that specific model. Otherwise, a comparable car in the same group with similar size and performance is supplied.

How to Book Sixt Car Rental at Denver Airport

Use the following platforms to book a rental car in Denver through Sixt. Do not rely on any unauthorised websites, as it can lead to potential scams. 

On Sixt.com: Sixt offers booking options for easy changes and fast reservation management. Enter Denver International Airport (DEN) as the pickup location, select rental dates and driver’s age, and browse available vehicles by category. Pay Now (prepaid) and Pay Later options are available, with free cancellation on many rates.

The Sixt App: Download the Sixt App to update reservations or extras in real time. The app supports booking, mobile ticket storage, live fleet browsing, and reservation management; changes can be made from anywhere without calling the counter.

One-Way Rentals: It is possible to rent a car one way between stations for pickups in Denver. A fee will apply. Sixt has multiple locations in Colorado, including Denver Union Station and Cherry Creek, as well as out-of-state drop-off options.

Guaranteed Models: When a “guaranteed model” option is available for specific dates, selecting it reserves that exact vehicle, which is useful for renters who need a specific car for a special occasion or require a confirmed model.

Rental Policies at Sixt Denver Airport

Sixt at Denver Airport has strict guidelines for its rental policies, and every renter must fulfill them. 

1. Age Requirements

The minimum age to rent a car from Sixt in Denver is 21. Drivers under the age of 25 will be charged an underage driver fee. Some larger and specialty car categories require renters to be 25 or older. Specifically, luxury car rentals in Denver require the renter to be 25 or older.

2. Driver’s Licence

Drivers must have a full driving licence held for at least 12 months and must provide proof of identity. A valid driver’s licence and passport (if required) must be presented at pickup. Drivers whose home licences are printed in a non-Roman alphabet must provide an International Driving Permit. International renters will also need to provide a passport. Photocopies and digital wallet versions of licences are not accepted.

3. Credit and Debit Card Policy

A credit card in the main driver’s name is required for payment and deposit. Sixt places a temporary hold on the credit card at pickup for the deposit amount. In the US, generally a minimum of $200 will be charged to the payment method for security purposes. The deposit for high-value vehicles are higher.

4. Additional Drivers

Sixt allows up to nine additional drivers per booking. All additional drivers must have their licences verified at the Sixt branch during pickup. They must also meet the age requirements for the chosen vehicle category. All additional drivers must present their own licence at pickup. An additional driver fee applies; confirm the current daily rate at the time of booking.

5. Security Deposit

A minimum of $200 is charged to the payment method for security purposes in the US. Non-airport locations in Colorado have higher minimum authorisation amounts. The deposit for high-value and luxury vehicles may be significantly higher. The hold is released after the vehicle is returned without damage or additional charges.

6. Pets

Pets are allowed in Sixt vehicles; just return the car clean. This applies across the fleet without a specific pet fee, making Sixt one of the most pet-friendly rental companies at DEN.

7. Vehicle Return

Refuel at the nearest station before returning to avoid the Sixt refuelling surcharge. Returns outside counter hours (before 5:30 a.m. or after 2:00 a.m.) are accepted; the facility handles 24-hour returns independently of counter staffing.

Along with basic facilities, Sixt Car Rental Denver Airport also offers add-ons, including child seats, damage waiver insurance, music system, and more at extra charges. These can be included on the reservation during online booking or with assistance at the counter while picking up.