HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Denver

$44+ Cheap flights from the United States to Denver (DEN)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/8. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — DEN
May 9 — May 161
Sat 5/9
Sat 5/16
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from USA to Denver with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from USA to Denver

Cheapest flights from USA to Denver
Explore the most affordable flight options available from USA to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 9, 2026.

This Frontier deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/910:17 pm
DFW
-
DEN
Nonstop2h 27m
Frontier
Mon 5/115:59 pm
DEN
-
DFW
Nonstop2h 21m
Frontier
Deal found 4/6$64
This Kiwi.com deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/75:18 am
DFW
-
DEN
Nonstop2h 15m
Frontier
Thu 5/145:05 am
DEN
-
DFW
Nonstop2h 02m
Frontier
Deal found 4/6$69
This Cheapflightsfares deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/212:19 pm
DFW
-
DEN
Nonstop2h 21m
Frontier
Thu 5/75:05 am
DEN
-
DFW
Nonstop2h 02m
Frontier
Deal found 4/6$70
This Super.com deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/2512:19 pm
DFW
-
DEN
Nonstop2h 21m
Frontier
Tue 4/284:36 pm
DEN
-
DFW
Nonstop2h 19m
Frontier
Deal found 4/6$71
This Cheapflightsfares deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/233:28 pm
DFW
-
DEN
Nonstop2h 20m
Frontier
Tue 4/2811:29 am
DEN
-
DFW
Nonstop2h 18m
Frontier
Deal found 4/6$72
This Super.com deal was found by Cheapflights users on 4/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/46:35 pm
DFW
-
DEN
Nonstop2h 19m
Frontier
Sat 5/99:28 pm
DEN
-
DFW
Nonstop2h 10m
Frontier
Deal found 4/7$73
This Cheapflightsfares deal was found by Cheapflights users on 4/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/205:18 am
DFW
-
DEN
Nonstop2h 15m
Frontier
Sat 5/239:28 pm
DEN
-
DFW
Nonstop2h 10m
Frontier
Deal found 4/8$74
This Trip.com deal was found by Cheapflights users on 4/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/303:33 pm
DFW
-
DEN
Nonstop2h 20m
Frontier
Wed 5/65:05 am
DEN
-
DFW
Nonstop2h 02m
Frontier
Deal found 4/8$77
This Super.com deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/145:18 am
DFW
-
DEN
Nonstop2h 15m
Frontier
Sun 5/175:05 am
DEN
-
DFW
Nonstop2h 02m
Frontier
Deal found 4/6$78
This Cheapflightsfares deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/87:41 pm
DFW
-
DEN
Nonstop2h 28m
Frontier
Mon 5/115:59 pm
DEN
-
DFW
Nonstop2h 21m
Frontier
Deal found 4/6$79
This Kiwi.com deal was found by Cheapflights users on 4/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/167:15 pm
DFW
-
DEN
Nonstop2h 28m
Frontier
Tue 5/197:00 am
DEN
-
DFW
Nonstop2h 03m
Frontier
Deal found 4/8$80
This Cheapflightsfares deal was found by Cheapflights users on 4/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/273:33 pm
DFW
-
DEN
Nonstop2h 20m
Frontier
Thu 4/306:00 am
DEN
-
DFW
Nonstop2h 13m
Frontier
Deal found 4/6$81

Find flight deals from USA to Denver

Keep the following information in mind while searching for USA to Denver flight deals. Data was last updated April 9, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$64
(Frontier)

One-way from

$44
(Frontier)

Popular in

December

Cheapest in

January

Average price

$342

Good round-trip deal

$111 or less

Good one-way deal

$59 or less
Provider with most accurate pricing for New York (NYC)-Denver Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for New York (NYC)-Denver Intl flights.
Search Deals
From USA to Denver Intl
Search Deals
One-way flight from USA to Denver Intl
Search Deals
High demand for flights, 3% potential price rise
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
Search Deals
Price to beat on a round-trip flight from USA to Denver Intl.
Search Deals
Price to beat on a one-way flight from USA to Denver Intl.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from USA to Denver that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 9, 2026.
Use the filters below to find and compare flights from the United States to Denver that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Los AngelesDenver

LAX - DEN

LAXDEN

Los Angeles

Thu 5/21

8:19 pm-11:44 pm

Nonstop2h 25m

Denver Intl

Tue 5/26

6:30 pm-8:04 pm

Nonstop2h 34m

$147

Los AngelesDenver

LAX - DEN

LAXDEN

Los Angeles

Sat 5/2

5:20 am-12:20 pm

2 stops6h 00m

Denver Intl

Sat 5/2

7:55 pm-9:30 pm

Nonstop2h 35m

$152

Los AngelesDenver

LAX - DEN

LAXDEN

Los Angeles

Fri 5/8

2:09 pm-5:35 pm

Nonstop2h 26m

Denver Intl

Mon 5/11

7:25 am-8:57 am

Nonstop2h 32m

$157

Los AngelesDenver

LAX - DEN

LAXDEN

Los Angeles

Thu 4/30

7:55 pm-11:10 pm

Nonstop2h 15m

Denver Intl

Mon 5/4

4:25 pm-6:00 pm

Nonstop2h 35m

$157

Los AngelesDenver

LAX - DEN

LAXDEN

Los Angeles

Fri 5/15

5:00 pm-11:05 pm

1 stop5h 05m

Denver Intl

Wed 5/20

10:10 am-1:20 pm

1 stop4h 10m

$162

Los AngelesDenver

LAX - DEN

LAXDEN

Los Angeles

Thu 6/4

4:55 pm-11:05 pm

1 stop5h 10m

Denver Intl

Tue 6/9

2:50 pm-5:45 pm

1 stop3h 55m

$167

Los AngelesDenver

LAX - DEN

LAXDEN

Los Angeles

Mon 6/1

5:20 am-10:10 am

1 stop3h 50m

Denver Intl

Wed 6/3

10:30 am-1:40 pm

1 stop4h 10m

$167

Los AngelesDenver

LAX - DEN

LAXDEN

Los Angeles

Sat 5/9

7:30 am-2:40 pm

2 stops6h 10m

Denver Intl

Mon 5/11

6:05 pm-9:35 pm

1 stop4h 30m

$168

Los AngelesDenver

LAX - DEN

LAXDEN

Los Angeles

Fri 5/1

5:10 am-10:50 am

1 stop4h 40m

Denver Intl

Fri 5/1

6:05 pm-9:35 pm

1 stop4h 30m

$172

Los AngelesDenver

LAX - DEN

LAXDEN

Los Angeles

Wed 6/3

2:20 pm-8:40 pm

2 stops5h 20m

Denver Intl

Mon 6/8

8:10 pm-12:05 am

1 stop4h 55m

$172

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/8

Showing 1-10 of 60 resultsSorted by cheapest first
1
2
3
...
6

Best time to book a flight from USA to Denver

Have a flexible travel schedule? Discover the best time to fly to Denver from USA with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from the United States to Denver

What is the cheapest month to book a flight from USA to Denver?

Currently, October is the cheapest month in which you can book a flight from USA to Denver (average of $51). Flying from USA to Denver in July is currently the most expensive (average of $95). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from US to DEN?

Find hourly flight availability from USA to Denver. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 9, 2026.

Unlike at noon, when flights are generally more expensive, you can save up to 21% on flights from USA to Denver by exploring options for tickets in the evening.

What is the cheapest day to fly from USA to Denver?

Use this chart to determine the cheapest time to fly round-trip from USA to Denver. Price data was last updated on April 4, 2026.

Travelers seeking maximum savings on their USA to Denver flight should consider departing on Monday at noon when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from USA to Denver

Explore weekly flight availability from USA to Denver. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated April 9, 2026.

The most flights from US0 to DEN are scheduled on a Thursday (88 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (53 on average).

How often are flights from the United States to Denver delayed?

About 17% of weekly flights between United States and Denver have experienced delays in the past year, with the average delay time being 145 minutes.

What is the most punctual flight time for the United States to Denver flights?

Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Saturday tends to have the lowest number of delays on this route, whereas Friday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on the United States to Denver flights?

Over the last year, United Airlines have had the lowest number of delays on this route, with just 14% of flights being delayed.

The best insider tips for theUnited States to Denver flights

AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your theUnited States to Denver trip
Our travel experts
Marisa Garcia

Marisa Garcia

Expert on Frontier and American Airlines

Marisa knows planes inside and out, spending 16 years working on aircraft in hangars at airports around the world. She is an aviation industry expert, specialized in airline interiors and regulations. Ten years ago, she pivoted to journalism. She shares her insights in leading aviation, travel, and business publications and on her site FlightChic.

Read more
Harriet Baskas

Harriet Baskas

Expert on United Airlines and Delta

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Read more
Blane Bachelor

Blane Bachelor

Expert on JetBlue

Blane Bachelor is a journalist and editor specializing in travel and aviation who writes regularly for top global outlets. Born and raised in Florida, Blane has worked and lived in four countries, including the Netherlands, where she’s currently based with her family. Her favorite way to get to know a new destination is by running or riding a bike around town – or hearing a spooky ghost story about local history. She will always choose the window seat.

Read more
Robert Schrader

Robert Schrader

Expert on Alaska Airlines

One of the web's original travel bloggers, Robert launched his first site Leave Your Daily Hell in 2009. Since then, he's expanded into destination niche sites (one each for Japan, Thailand and Taiwan), in addition to having written for the inflight magazines of Singapore Airlines and Korean Air. Overall, he's visited nearly 100 countries, and flies business as often as possible.

Read more
Emily Zemler

Emily Zemler

Expert on DEN

Emily is a freelance writer and book author based in London covering entertainment and travel. Her work has appeared in Los Angeles Times, Observer, and Conde Nast Traveler She has ventured to more than 40 countries and all seven continents, always in search of a great art museum. She has written extensively about hotels, luxury travel, and aviation.

Read more

Reviews of airlines servicing Denver

Get insights into the airlines that provide service to Denver. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Denver. Reviews last updated April 9, 2026.
See what other customers who have flown with Southwest,Delta, andUnited Airlines from the United States to Denver have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,338 reviews

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Crew

8.6

Food

7.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Southwest
8.0
Very good
4,338 reviews
Southwest
8.0
Very good
4,338 reviews

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Crew

8.6

Food

7.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Delta
7.9
Good
8,392 reviews
Southwest
8.0
Very good
4,338 reviews

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Crew

8.6

Food

7.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
United Airlines
7.4
Good
9,554 reviews
Southwest
8.0
Very good
4,338 reviews

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Crew

8.6

Food

7.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
American Airlines
7.1
Good
11,560 reviews
Southwest
8.0
Very good
4,338 reviews

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Crew

8.6

Food

7.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Frontier
5.7
Fair
2,995 reviews
Southwest
8.0
Very good
4,338 reviews

Boarding

8.1

Comfort

8.0

Entertainment

7.5

Crew

8.6

Food

7.0

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

Related info for your journey

Find useful and relevant information for your journey from USA to Denver. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Denver from United States?

    Most people fly into Denver Intl (DEN) if they book a flight to Denver from United States. Denver Intl is conveniently located just 18.5 mi from Denver’s city center.

  • How popular is this USA to Denver flight route?

    The United States to Denver Intl flight path was viewed by 433 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • How long is the flight from USA to Denver?

    For as low as $147, Delta can have you in Denver from USA in 2h 25m. The distance from USA to Denver is about 860 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines to fly from USA to Denver one-way?

    The cheapest airline one-way is Frontier, with whom users have recently found tickets for as low as $27. However, be on the lookout for offers from Southwest and Allegiant Air, as they are both options that can get you from USA to Denver for a low price.

  • What are the most popular routes from USA to Denver?

    The most popular flight routes from USA to Denver are Newark - Denver Intl, Chicago O'Hare Intl - Denver Intl and Dallas/Fort Worth - Denver Intl.

  • What are the most reliable airlines from USA to Denver?

    Consider Gulf Air (100%), Cathay Pacific (100%) or Asiana Airlines (92%) when booking your flight. These represent the most reliable airlines when flying from USA to Denver.

  • What are the cheapest flights from USA to Denver?

    While on average a flight from USA to Denver is generally $692, our data shows the cheapest flight currently is $89. When looking at the most popular route, (Newark - Denver Intl), you can expect to pay $165 for that flight.

  • Can I find deals for flights from USA to Denver that include hotel bookings?

    Yes. In addition to deals on USA to Denver flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from USA to Denver?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from USA to Denver.

  • Can I find deals for business class flights from USA to Denver?

    Yes. Cheapflights offers flight deals from USA to Denver by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from USA to Denver?

    Currently, October is the cheapest month in which you can book a flight from USA to Denver (average of $51). Flying from USA to Denver in July is currently the most expensive (average of $95). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Denver?

Book flights to Denver if you plan to visit one of these locations
Thornton
Black Hawk
Lakewood
Westminster
Broomfield
Golden
Centennial
Greeley
Lone Tree
Wheat Ridge
Silverthorne
Central City
Cripple Creek
Winter Park
Manitou Springs
Frisco
Englewood
Fort Morgan
Glendale
Evergreen

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for USA to Denver

See prices for flight routes from nearby airports that may be better suited for you.
Newark to Denver flights
O'Hare Intl to Denver flights
Dallas/Fort Worth to Denver flights
John F Kennedy Intl to Denver flights
LaGuardia to Denver flights
Seattle to Denver flights
Dulles Intl to Denver flights
Los Angeles to Denver flights
Baltimore to Denver flights
San Francisco to Denver flights
Philadelphia to Denver flights
Detroit to Denver flights
Boston to Denver flights
Minneapolis to Denver flights
Ontario to Denver flights
Hobby to Denver flights
Atlanta to Denver flights
Orlando to Denver flights
Sky Harbor Intl to Denver flights
Raleigh to Denver flights
Santa Ana to Denver flights
Reagan-National to Denver flights
Austin to Denver flights
Tampa to Denver flights
George Bush Intcntl to Denver flights
Cleveland to Denver flights
Miami to Denver flights
Charlotte to Denver flights
Portland to Denver flights
Cincinnati to Denver flights
Indianapolis to Denver flights
Midway to Denver flights
Milwaukee to Denver flights
Fort Lauderdale to Denver flights
Nashville to Denver flights
Sacramento to Denver flights
Columbus to Denver flights
Grand Rapids to Denver flights
San Jose to Denver flights
Madison to Denver flights
Appleton to Denver flights
San Diego to Denver flights
Pittsburgh to Denver flights
St. Louis to Denver flights
Las Vegas to Denver flights
Kansas City to Denver flights
Burbank to Denver flights
Hartford to Denver flights
Salt Lake City to Denver flights
San Antonio to Denver flights

Top 9 airlines flying from USA to Denver

Discover the top 9 airlines that operate flights from USA to Denver. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 9, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$54Average$192FlexibilityNo cancel feeOn-time62%
Hawaiian AirlinesCheapest$78Average$223FlexibilityNo cancel feeOn-time85%
Allegiant AirCheapest$87Average$96FlexibilityNo cancel feeOn-time88%
DeltaCheapest$94Average$291FlexibilityNo cancel feeOn-timeN/A
JetBlueCheapest$103Average$286FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$106Average$322FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$117Average$271FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$118Average$269FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$125Average$311FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.