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$40+ Cheap flights from California 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 10/23. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — DEN
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
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Cheap flight deals from California to Denver

Keep the following information in mind while searching for California to Denver flight deals. Data was last updated September 15, 2025.

Round-trip from

$66
(Kiwi.com)

One-way from

$40
(Cheapflightsfares)

Popular in

June

Cheapest in

January

Average price

$180

Good round-trip deal

$127 or less

Good one-way deal

$75 or less
From California to Denver Intl
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One-way flight from California to Denver Intl
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Highest demand for flights based on searches. 10% potential increase in price ($20 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($4 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from California to Denver Intl.
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Price to beat on a one-way flight from California to Denver Intl.
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Find flight deals from California to Denver

Cheapest flights from California to Denver
Explore the most affordable flight options available from California to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 15, 2025.

This Kiwi.com deal was found by Cheapflights users on 9/15. 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.
Wed 12/1012:59 amLAS - DEN
Nonstop1h 59mFrontier
Mon 12/157:00 amDEN - LAS
Nonstop2h 05mFrontier
Deal found 9/15$66
This Cheapflightsfares deal was found by Cheapflights users on 9/15. 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 10/612:59 amLAS - DEN
Nonstop2h 00mFrontier
Wed 10/88:00 amDEN - LAS
Nonstop2h 02mFrontier
Deal found 9/15$67
This Frontier deal was found by Cheapflights users on 9/14. 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.
Fri 12/511:52 amONT - DEN
Nonstop2h 22mFrontier
Mon 12/159:30 amDEN - ONT
Nonstop2h 27mFrontier
Deal found 9/14$67
This Frontier deal was found by Cheapflights users on 9/13. 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.
Sun 10/126:53 amONT - DEN
Nonstop2h 25mFrontier
Tue 10/1410:29 pmDEN - ONT
Nonstop2h 21mFrontier
Deal found 9/13$68
This eDestinos deal was found by Cheapflights users on 9/13. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/198:59 pmONT - DEN
Nonstop2h 27mFrontier
Mon 9/226:30 amDEN - ONT
Nonstop2h 23mFrontier
Deal found 9/13$69
This Booking.com deal was found by Cheapflights users on 9/15. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/147:04 amONT - DEN
Nonstop2h 27mFrontier
Fri 10/178:15 amDEN - ONT
Nonstop2h 20mFrontier
Deal found 9/15$71
This Cheapflightsfares deal was found by Cheapflights users on 9/14. 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 9/2612:59 amLAS - DEN
Nonstop2h 01mFrontier
Sat 9/2710:29 pmDEN - LAS
Nonstop2h 04mFrontier
Deal found 9/14$72
This Kiwi.com deal was found by Cheapflights users on 9/13. 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 9/278:59 pmONT - DEN
Nonstop2h 27mFrontier
Sun 9/286:00 amDEN - ONT
Nonstop2h 23mFrontier
Deal found 9/13$72
This Cheapflightsfares deal was found by Cheapflights users on 9/14. 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 10/312:59 amLAS - DEN
Nonstop2h 01mFrontier
Tue 10/71:44 pmDEN - LAS
Nonstop2h 02mFrontier
Deal found 9/14$73
This Cheapflightsfares deal was found by Cheapflights users on 9/13. 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.
Sun 9/218:59 pmONT - DEN
Nonstop2h 27mFrontier
Wed 9/246:29 pmDEN - ONT
Nonstop2h 25mFrontier
Deal found 9/13$73
This Frontier deal was found by Cheapflights users on 9/12. 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.
Tue 9/308:59 pmONT - DEN
Nonstop2h 27mFrontier
Sun 10/56:00 amDEN - ONT
Nonstop2h 23mFrontier
Deal found 9/12$74
This Kiwi.com deal was found by Cheapflights users on 9/12. 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.
Fri 10/38:59 pmONT - DEN
Nonstop2h 27mFrontier
Wed 10/810:29 pmDEN - ONT
Nonstop2h 21mFrontier
Deal found 9/12$75

Cheapflights Fare Finder

 
Customize your flight search to find flights from California 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 September 15, 2025.
Use the filters below to find and compare flights from California to Denver that are best for you.

Fly from

California

Fly to

Denver

Route

Depart

Return

Price

San DiegoDenver

SAN - DEN

SANDEN

San Diego

Tue 9/23

7:15 am-10:50 am

Nonstop2h 35m

Denver Intl

Wed 9/24

8:50 pm-10:24 pm

Nonstop2h 34m

$83

San DiegoDenver

SAN - DEN

SANDEN

San Diego

Wed 10/22

10:20 am-3:20 pm

1 stop4h 00m

Denver Intl

Mon 10/27

8:10 pm-9:30 pm

Nonstop2h 20m

$99

San DiegoDenver

SAN - DEN

SANDEN

San Diego

Sat 11/1

7:00 am-12:35 pm

1 stop4h 35m

Denver Intl

Mon 11/3

5:45 pm-7:15 pm

Nonstop2h 30m

$104

Las VegasDenver

LAS - DEN

LASDEN

Las Vegas Harry Reid Intl

Wed 11/5

12:59 am-3:59 am

Nonstop2h 00m

Denver Intl

Sat 11/8

12:59 am-11:34 am

1 stop11h 35m

$105

Las VegasDenver

LAS - DEN

LASDEN

Las Vegas Harry Reid Intl

Sat 11/15

10:12 am-1:23 pm

Nonstop2h 11m

Denver Intl

Sat 11/15

12:59 am-11:34 am

1 stop11h 35m

$106

Las VegasDenver

LAS - DEN

LASDEN

Las Vegas Harry Reid Intl

Fri 11/7

12:59 am-3:59 am

Nonstop2h 00m

Denver Intl

Sun 11/9

1:42 pm-9:28 pm

1 stop8h 46m

$112

San DiegoDenver

SAN - DEN

SANDEN

San Diego

Sat 10/25

12:55 pm-6:50 pm

1 stop4h 55m

Denver Intl

Mon 10/27

8:10 pm-11:15 pm

1 stop4h 05m

$113

San DiegoDenver

SAN - DEN

SANDEN

San Diego

Wed 10/15

10:32 am-2:00 pm

Nonstop2h 28m

Denver Intl

Sat 10/18

7:01 am-8:25 am

Nonstop2h 24m

$117

BurbankDenver

BUR - DEN

BURDEN

Burbank Bob Hope

Thu 10/23

6:08 pm-3:59 am

1 stop8h 51m

Denver Intl

Sun 10/26

10:00 am-11:30 am

Nonstop2h 30m

$117

Las VegasDenver

LAS - DEN

LASDEN

Las Vegas Harry Reid Intl

Sat 9/27

4:10 pm-7:15 pm

Nonstop2h 05m

Denver Intl

Sat 9/27

10:29 pm-11:33 pm

Nonstop2h 04m

$121

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Showing 1-10 of 60 results
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Best time to book a flight from California to Denver

Have a flexible travel schedule? Discover the best time to fly to Denver from California 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 California to Denver

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

Currently, October is the cheapest month in which you can book a flight from California to Denver (average of $197). Flying from California to Denver in March is currently the most expensive (average of $278). 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 CA to DEN?

Find hourly flight availability from California 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 September 15, 2025.

When flying from California to Denver, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from California to Denver

Explore weekly flight availability from California 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 September 15, 2025.

The most flights from USCA to DEN are scheduled on a Friday (102 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (54 on average).

Related info for your journey

Find useful and relevant information for your journey from California 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 California?

    Located just 18.5 mi from the city center, Denver Intl (DEN) is the airport most travelers will use when flying to Denver from California.

  • How popular is this California to Denver flight route?

    Flights from California to Denver Intl have been viewed 401 times in the past calendar month.

  • How long is the flight from California to Denver?

    Airlines like Frontier, Southwest, and Hawaiian Airlines fly from California to Denver in about 2h 28m. The time it takes to get you to your destination can typically vary by up to 1h 32m. The distance from California to Denver is about 852 mi. This flight may include one or multiple stops.

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

    The cheapest airlines for a one-way flight from California to Denver are Frontier ($40), Hawaiian Airlines ($56), and Alaska Airlines ($59).

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

    While some choose either Los Angeles - Denver Intl or Ontario - Denver Intl, San Francisco - Denver Intl is the most popular route from California to Denver.

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

    No one likes to see their flight delayed. When booking a flight from California to Denver consider choosing Air France (85%), Cathay Pacific (84%) or SkyWest Airlines (84%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from California to Denver?

    Looking for the cheapest flight from California to Denver? While on average our users pay $723, our data indicates the cheapest price to be $69. The most popular route (San Francisco - Denver Intl), is priced around $77.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from California 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 California to Denver?

    Currently, October is the cheapest month in which you can book a flight from California to Denver (average of $197). Flying from California to Denver in March is currently the most expensive (average of $278). 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
Black Hawk
Westminster
Golden
Winter Park
Lakewood
Broomfield
Greeley
Lone Tree
Cripple Creek
Thornton
Silverthorne
Manitou Springs
Fort Morgan
Glendale
Wheat Ridge
Brighton
Longmont
Idaho Springs
Parker
Sterling

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Alternative routes for California to Denver

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Top 8 airlines flying from California to Denver

Discover the top 8 airlines that operate flights from California 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 September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$38Average$163FlexibilityNo cancel feeOn-time62%
Allegiant AirCheapest$88Average$128FlexibilityNo cancel feeOn-time88%
DeltaCheapest$98Average$265FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$98Average$197FlexibilityNo cancel feeOn-time85%
Alaska AirlinesCheapest$117Average$280FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$121Average$295FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$136Average$325FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$148Average$283FlexibilityNo cancel feeOn-time71%

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