Downtown Denver is very walkable, but you need a car for the mountains.

How long is the flight?

The flight from Atlanta to Denver is about 3.5 hours.

Is it better to fly or drive?

Flying is significantly faster and often more cost-effective.

What is the best time to visit?

It depends on whether you prefer summer hiking or winter skiing.

Does Denver have public transit?

Yes, the RTD system provides extensive bus and light rail service.

Marietta

Denver

Flight Driving

Marietta to Denver

Updated: 28 May 2026

The distance from Marietta to Denver is approximately 2,200 kilometers. Flying from Hartsfield-Jackson Atlanta International Airport (ATL) to Denver International Airport (DEN) is the most practical method, taking about 3.5 hours in the air. Driving is a multi-day commitment, usually requiring 20-22 hours of pure driving time across the Great Plains. Denver serves as the gateway to the Rocky Mountains and offers a high-altitude urban experience. Choose your mode based on your time constraints and desire for a road trip.

Total Distance: Driving distance 2,200 km, straight-line air distance 1,950 km.

Fastest Way

Flying from ATL to DEN is the fastest, taking about 3.5 hours.

Cheapest Way

Flying is often cheaper than the cost of fuel, hotels, and food for a multi-day drive.

Compare Marietta to Denver Routes

	Flight Direct	Driving Direct
Duration	3 hours 30 mins	22 hours
Avg Price	$200 - $500	$300 - $450 in fuel
Operator	Delta Air Lines	Personal Vehicle
Route	ATL to DEN.	I-24 W to I-70 W.
Tip	Book flights at least 30 days in advance for the best rates.	Prepare for long, flat stretches through Kansas.

Travel Tips

Altitude
Drink extra water to adjust to the high altitude of Denver.
Sunscreen
The sun is stronger at high altitudes; wear protection even in winter.
Transport
Use the A-Line train from the airport to downtown Denver.
Packing
Dress in layers, as weather can change rapidly in Colorado.
Booking
Reserve rental cars early if you plan to explore the mountains.

Safety Tips

Driving
If driving, watch for sudden snowstorms in the mountains.
Health
Be aware of altitude sickness symptoms like headaches and nausea.
Hydration
Avoid excessive alcohol consumption during your first 24 hours.
Emergency
Keep a winter emergency kit in your car if traveling in colder months.