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Denver International Airport is the largest airport in the United States by total land area and one of the busiest, serving as a major hub for United Airlines and Southwest Airlines. DEN handles over 69 million passengers annually with service to more than 215 destinations. Fareclue helps you find the best deals on flights departing from Denver.
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Airlines Operating from Denver Airport
Denver International serves as a major hub for United Airlines and Southwest Airlines, which together operate the majority of flights. Frontier Airlines is headquartered in Denver and offers low-cost domestic service. Delta Air Lines, American Airlines, Spirit Airlines, and JetBlue also maintain significant operations. International carriers including British Airways, Icelandair, and Lufthansa provide transatlantic service.
Popular Airlines from Denver (DEN)
American Airlines
Code: AA
American Airlines is one of the largest airlines in the world that offers domestic and international flights to hundreds of destinations. If you are planning to book American Airlines flights it is so easy and simple as it offers comfortable seats at low prices.
Starts $169*
Southwest Airlines
Code: WN
Southwest Airlines is a popular airline that offers flights to many domestic and international destinations. If you want to book Southwest flights, process is very simple and easy with affordable fares, comfortable seats, and has multiple travel options.
Starts $129*
Major Destinations with Direct Flights from Denver
Denver International Airport provides extensive non-stop service to cities across the country. Its central location makes it a natural connecting hub for east-west travel:
- Los Angeles – Frequent non-stop service with United Airlines, Southwest Airlines, Delta, and Spirit Airlines.
- New York – Multiple daily flights to JFK, Newark, and LaGuardia with United, Delta, JetBlue, and American Airlines.
- Chicago – Regular departures to O'Hare with United Airlines, American Airlines, and Southwest Airlines.
- San Francisco – Daily non-stop flights with United Airlines, Southwest, and Frontier Airlines.
- Seattle – Frequent service with United Airlines, Alaska Airlines, Southwest, and Frontier.
- Phoenix – Multiple daily flights with American Airlines, Southwest, and Frontier Airlines.
- Las Vegas – One of the most popular routes from Denver with Southwest, Frontier, and Spirit Airlines.
- Dallas/Fort Worth – Regular non-stop service with American Airlines, United Airlines, and Southwest.
Denver Airport Concourses
Denver International Airport has three concourses: A, B, and C. The Jeppesen Terminal is the main building with check-in, security, and baggage claim. An underground train system connects the terminal to all three concourses. Concourse B is the largest, home to United Airlines operations. Concourse A handles Southwest Airlines and other carriers. Concourse C serves additional airlines. The iconic tent-like roof structure is visible for miles across the Colorado plains.
Popular Flight Routes from Denver (DEN)
United Airlines
$189*
per person
United Airlines
$229*
per person
United Airlines
$169*
per person
United Airlines
$179*
per person
Southwest Airlines
$129*
per person
Real Experiences at Denver Airport
- The iconic white tent-like roof of Denver International is one of the most recognizable airport structures in the world.
- The underground train system efficiently connects the main terminal to all three concourses in just a few minutes.
- Denver's high altitude can affect some travelers; stay hydrated and take it easy if you're not acclimatized.
- The airport features an impressive public art collection, including the famous blue mustang sculpture at the entrance.
- Dining options include excellent local Colorado cuisine, craft beer bars, and the popular New Belgium Hub bar.
- Free Wi-Fi is available throughout the airport, and charging stations are plentiful at most gate areas.
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What Our Travelers Say
Real reviews from travelers who booked with FareClue.
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I've booked four trips through FareClue now. Consistently the best fares and the most responsive support I've used.
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Boston, MA
Business class fare was hundreds below what the airline quoted me directly. The whole process took ten minutes.
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San Francisco, CA
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Victoria Hamilton
New York, USA
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David R.
Chicago, IL
How to Book the Best Flights from This Airport
- 1
Check which airlines operate from this airport's terminals before searching fares
- 2
Identify the dominant carrier at this airport — hub airlines often have lower fares here
- 3
Compare departure times: early morning and late night flights typically cost less
- 4
Book 4–8 weeks ahead for domestic routes and 2–4 months for international departures
- 5
Ask about lounge access when booking business class — most major airports have premium options
- 6
Request a private fare quote mentioning this airport to get tailored route recommendations
Why Book Your Airport Flight Through Fareclue?
Our agents specialize in airport-based fare sourcing — we know which carriers dominate each hub and how to route around high-markup monopoly fares.
- 1
Airport-specific fare expertise
We track fare trends by departure airport and know the cheapest windows for each hub.
- 2
Multi-airline comparison
We compare all carriers serving this airport to find the best combination of price and schedule.
- 3
Terminal and logistics support
We advise on terminal check-in, lounge access, and connection timings for your specific route.
- 4
Preferred partner discounts
Our airline contracts unlock private fares on many routes departing from major hub airports.
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Frequently Asked Questions about Denver Airport
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