Fly into Denver International Airport and then travel by car, bus, or shuttle to Longmont.

The Regional Transportation District (RTD) is the public transportation service provider for Denver, Longmont, Boulder, and surrounding cities in Colorado. RTD offers the A-Line Light Rail from Denver International Airport to Union Station in Denver, where you can take a bus to Longmont. Use the RTD Trip planner to figure out your best route.

Book Online or Call (720) 223-5474

Our Denver International Airport Shuttle Schedule starts with a 4:00 am arrival to DIA and continues every hour until the final shuttle leaves DIA at approximately 11:30pm.

If you're looking to rent a car, it's worth pricing out Turo. DIA has a great system for rideshare rentals with easy pickup and dropoff right at the airport.