Denver International Airport (DEN)
Denver International Airport, commonly called DEN or DIA, is the primary international airport serving Denver, Colorado, and the wider Rocky Mountain/Front Range region. Its official airport code is IATA: DEN and ICAO: KDEN. The airport is located at 8500 Peña Blvd, Denver, CO 80249, USA.
Quick answer: Denver International Airport has one main passenger terminal, Jeppesen Terminal, and three concourses—A, B and C—connected by an underground train system. DEN handled a record 82,427,962 passengers in 2025, making it the 4th-busiest airport in the United States and 10th-busiest in the world according to DEN’s 2025 figures.
Denver International Airport — Key Facts
| Information | Details |
|---|---|
| Airport name | Denver International Airport |
| Common name | DEN / DIA |
| IATA code | DEN |
| ICAO code | KDEN |
| Airport type | International / commercial |
| Location | 8500 Peña Blvd, Denver, Colorado 80249, USA |
| Opened | February 28, 1995 |
| Passenger terminal | Jeppesen Terminal |
| Concourses | A, B and C |
| 2025 passengers | 82,427,962 |
| 2025 U.S. ranking | 4th busiest |
| 2025 global ranking | 10th busiest |
| Nonstop destinations | 237 |
| Total gates | 172 |
| Airport land area | About 53 sq mi / 34,000 acres |
| Official website | Denver International Airport — FlyDenver.com |
| Wikipedia | Denver International Airport — Wikipedia |
Important Denver Airport Contact Numbers
The following are the most useful numbers for passengers, visitors and emergencies.
| Department / Service | Phone / Contact | When to use it |
|---|---|---|
| DEN Customer Service | (720) 730-4359 / 720-730-IFLY | General airport questions, directions and assistance |
| DEN Customer Service Text | (720) 902-9351 | Text an airport customer-service agent |
| Airport Police | (303) 342-4211 | Airport police / security matters; available 24/7 |
| Airport Operations Communications Center | (303) 342-4200 | Airport operational issues |
| Airport emergency line | (303) 342-4211 | Airport emergencies |
| Lost & Found — DEN | (720) 336-2522 | Items lost in public areas of DEN |
| Lost & Found Text | (720) 336-2818 | Lost-and-found assistance by text |
| Ground Transportation | (303) 342-4059 | Ground transportation information |
| Parking | (303) 342-7275 | Airport parking assistance |
| TSA | (866) 289-9673 | TSA/security questions |
| Noise concerns | (303) 342-2380 / (800) 417-2988 | Airport noise complaints |
| Environmental Management | (303) 342-2730 | Environmental matters |
| Media Information | (720) 583-5758 | Media inquiries |
| Taxi/limo/shuttle complaints | (303) 894-2070 | Regulatory complaints regarding these services |
| U.S. Customs & Border Protection | (303) 342-7400 | International-arrival/customs matters |
| Emergency services | 911 | Immediate police, fire or medical emergency |
Denver Airport Terminal Information
1. Jeppesen Terminal
DEN has one passenger terminal: Jeppesen Terminal. It handles airline check-in, baggage claim, ground transportation, international arrivals, security screening, restaurants, shops and other passenger facilities.
The terminal’s distinctive peaked roof is one of Denver’s most recognizable architectural landmarks and was designed to evoke Colorado’s Rocky Mountains and historic Great Plains landscapes.
Jeppesen Terminal levels
| Level | Main function |
|---|---|
| Level 4 | Passenger pickup |
| Level 5 | Baggage claim, ground transportation and many airline/check-in facilities |
| Level 6 | Airline ticketing/check-in and TSA security checkpoints |
DEN’s official facilities information describes Level 4 as the passenger-pickup level and Levels 5–6 as the principal public terminal levels.
DEN Concourses: A, B and C
Although DEN has only one passenger terminal, it has three airside concourses.
| Concourse | Main information |
|---|---|
| A Gates | Domestic and international operations; international arrivals use A Gates |
| B Gates | Major domestic operations, including United |
| C Gates | Domestic operations; major Frontier operations |
Lost and Found at DEN
A particularly important distinction is where you lost the item.
If you lost something in a public airport area
Contact DEN Lost and Found:
- Phone: (720) 336-2522
- Text: (720) 336-2818
DEN’s Lost and Found generally handles items lost in public airport areas.
If you lost something on an airplane
Contact the airline, not necessarily DEN Lost and Found.
If you lost something in a restaurant or shop
Contact the individual business.
If you lost something in a taxi, rideshare or public transportation
Contact the relevant transportation provider.
This distinction is important because DEN explicitly says that where the item was lost determines which organization handles the claim.
Denver International Airport FAQs
What is the airport code for Denver International Airport?
The IATA airport code is DEN, while the ICAO code is KDEN.
Is Denver International Airport the same as DIA?
Yes. DIA is a commonly used nickname/acronym for Denver International Airport, while DEN is its official IATA airport code.
How many terminals does Denver International Airport have?
DEN has one passenger terminal: Jeppesen Terminal. It has three concourses—A, B and C—connected by an underground train.
Does Denver Airport have a separate international terminal?
No. DEN uses its single Jeppesen Terminal for both domestic and international travel. International arrivals are processed through A Gates.
What concourse does an international flight use at DEN?
International arrivals use A Gates. Departure concourse assignments depend on the airline and flight.
How do I get from Concourse A to B or C?
Use the airport’s underground automated train, which connects Jeppesen Terminal with all three concourses.
What is Denver International Airport’s customer-service number?
The current DEN customer-service number is (720) 730-4359, also written as 720-730-IFLY. Customer-service agents are available daily from 6 a.m. to 10:30 p.m.
What is the Denver Airport Police phone number?
DEN lists (303) 342-4211 for Airport Police, available 24 hours a day, seven days a week.
What number should I call for an immediate emergency?
For an immediate police, fire or medical emergency in the United States, call 911. For an airport-specific police/security matter, DEN lists (303) 342-4211.
What is the Denver Airport Lost and Found number?
Call (720) 336-2522 or text (720) 336-2818. However, if the item was lost on an airplane, at an airline gate/check-in area or with another transportation provider, you may need to contact that organization directly.
How early should I arrive at Denver International Airport?
DEN has advised passengers to allow substantial time for check-in, baggage, security and the journey to the gate, particularly during peak travel periods. For international travel, DEN specifically recommends arriving three hours before scheduled departure, consistent with TSA guidance cited by the airport.
Does DEN have free Wi-Fi?
Yes. Denver International Airport provides free wireless internet access throughout the airport.
Is Denver Airport close to downtown Denver?
No. DEN is roughly 25 miles northeast of downtown Denver by road.
How many gates does DEN have?
DEN currently lists 172 gates.
How large is Denver International Airport?
The airport occupies about 34,000 acres, or 53 square miles, making the airport site exceptionally large.
What airlines use Denver as a major hub?
DEN is a major hub for United Airlines and Frontier Airlines, while Southwest also has a significant operation at the airport. Current airline and concourse assignments should be checked on DEN’s airline directory because they can change.
Where is passenger pickup at DEN?
Passenger pickup is primarily on Level 4 of Jeppesen Terminal.
Where are airline check-in counters?
Check-in is primarily associated with Levels 5 and 6, with major carriers including United, Southwest and Frontier using Level 6 and some other airlines temporarily located on Level 5 during ongoing changes.
Can I travel internationally through Denver Airport?
Yes. DEN operates extensive international service and international arrivals are processed through A Gates and U.S. Customs and Border Protection.