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$39+ Cheap flights from Colorado to California

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 9/21. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — LAX
Aug 19 — Aug 261
Tue 8/19
Tue 8/26
1 adult, Economy
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Cheap flight deals from Colorado to California

Keep the following information in mind while searching for Colorado to California flight deals. Data was last updated August 14, 2025.

Round-trip from

$74
(Cheapflightsfares)

One-way from

$39
(CheapOair)

Popular in

June

Cheapest in

January

Average price

$193

Good round-trip deal

$36 or less

Good one-way deal

$42 or less
From Colorado to California
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One-way flight from Colorado to California
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Highest demand for flights based on searches. 8% potential increase in price ($16 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($4 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Price to beat on a round-trip flight from Colorado to California.
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Price to beat on a one-way flight from Colorado to California.
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Find flight deals from Colorado to California

Cheapest flights from Colorado to California
Explore the most affordable flight options available from Colorado to California. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 14, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 8/14. 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.
Thu 10/2310:00 amDEN - BUR
Nonstop2h 30mFrontier
Sun 10/2612:15 pmBUR - DEN
Nonstop2h 31mFrontier
Deal found 8/14$74
This CheapOair deal was found by Cheapflights users on 8/14. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/910:00 amDEN - BUR
Nonstop2h 30mFrontier
Sun 10/1212:15 pmBUR - DEN
Nonstop2h 31mFrontier
Deal found 8/14$78
This Frontier deal was found by Cheapflights users on 8/14. 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.
Mon 11/39:48 amDEN - ONT
Nonstop2h 22mFrontier
Sun 11/96:53 amONT - DEN
Nonstop2h 25mFrontier
Deal found 8/14$78
This Cheapflightsfares deal was found by Cheapflights users on 8/12. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/116:29 pmDEN - ONT
Nonstop2h 25mFrontier
Mon 9/154:08 pmONT - DEN
Nonstop2h 23mFrontier
Deal found 8/12$80
This Frontier deal was found by Cheapflights users on 8/11. 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.
Thu 9/46:29 pmDEN - ONT
Nonstop2h 25mFrontier
Sat 9/68:59 pmONT - DEN
Nonstop2h 27mFrontier
Deal found 8/11$82
This Cheapflightsfares deal was found by Cheapflights users on 8/12. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/156:29 pmDEN - ONT
Nonstop2h 25mFrontier
Sun 9/218:59 pmONT - DEN
Nonstop2h 27mFrontier
Deal found 8/12$84
This Cheapflightsfares deal was found by Cheapflights users on 8/12. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/96:29 pmDEN - ONT
Nonstop2h 25mFrontier
Wed 9/108:59 pmONT - DEN
Nonstop2h 27mFrontier
Deal found 8/12$86
This CheapOair deal was found by Cheapflights users on 8/14. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/410:29 pmDEN - ONT
Nonstop2h 21mFrontier
Wed 11/56:53 amONT - DEN
Nonstop2h 25mFrontier
Deal found 8/14$87
This CheapOair deal was found by Cheapflights users on 8/13. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/56:00 amDEN - ONT
Nonstop2h 23mFrontier
Sun 9/78:59 pmONT - DEN
Nonstop2h 27mFrontier
Deal found 8/13$90
This Cheapflightsfares deal was found by Cheapflights users on 8/13. 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.
Wed 9/310:29 pmDEN - ONT
Nonstop2h 21mFrontier
Thu 9/48:59 pmONT - DEN
Nonstop2h 27mFrontier
Deal found 8/13$93
This Cheapflightsfares deal was found by Cheapflights users on 8/14. 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.
Sat 8/3010:29 pmDEN - ONT
Nonstop2h 21mFrontier
Mon 9/112:59 amONT - DEN
Nonstop2h 20mFrontier
Deal found 8/14$94
This CheapOair deal was found by Cheapflights users on 8/14. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/410:29 pmDEN - ONT
Nonstop2h 21mFrontier
Sat 11/812:05 pmONT - DEN
Nonstop2h 29mFrontier
Deal found 8/14$95

Cheapflights Fare Finder

 
Customize your flight search to find flights from Colorado to California 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 August 14, 2025.
Use the filters below to find and compare flights from Colorado to California that are best for you.

Fly from

Colorado

Fly to

California

Route

Depart

Return

Price

DenverBurbank

DEN - BUR

DENBUR

Denver Intl

Thu 10/23

10:00 am-11:30 am

Nonstop2h 30m

Burbank Bob Hope

Sun 10/26

12:15 pm-3:46 pm

Nonstop2h 31m

$74

DenverBurbank

DEN - BUR

DENBUR

Denver Intl

Thu 10/9

10:00 am-11:30 am

Nonstop2h 30m

Burbank Bob Hope

Sun 10/12

12:15 pm-3:46 pm

Nonstop2h 31m

$78

DenverOntario

DEN - ONT

DENONT

Denver Intl

Sun 10/5

6:00 am-7:23 am

Nonstop2h 23m

Ontario

Fri 10/17

6:53 am-10:18 am

Nonstop2h 25m

$78

DenverOntario

DEN - ONT

DENONT

Denver Intl

Mon 10/6

6:30 am-7:53 am

Nonstop2h 23m

Ontario

Thu 10/16

6:53 am-10:18 am

Nonstop2h 25m

$78

DenverOntario

DEN - ONT

DENONT

Denver Intl

Mon 11/3

9:48 am-11:10 am

Nonstop2h 22m

Ontario

Sun 11/9

6:53 am-10:18 am

Nonstop2h 25m

$78

DenverOntario

DEN - ONT

DENONT

Denver Intl

Sun 11/2

8:31 am-9:51 am

Nonstop2h 20m

Ontario

Sat 11/8

12:59 am-4:20 am

Nonstop2h 21m

$78

DenverOntario

DEN - ONT

DENONT

Denver Intl

Fri 9/5

6:00 am-7:23 am

Nonstop2h 23m

Ontario

Sat 9/6

8:59 pm-12:26 am

Nonstop2h 27m

$78

DenverOntario

DEN - ONT

DENONT

Denver Intl

Mon 10/6

6:30 am-7:53 am

Nonstop2h 23m

Ontario

Fri 10/17

6:53 am-10:18 am

Nonstop2h 25m

$78

DenverOntario

DEN - ONT

DENONT

Denver Intl

Sun 11/2

10:29 pm-11:50 pm

Nonstop2h 21m

Ontario

Thu 11/6

12:59 am-4:20 am

Nonstop2h 21m

$78

DenverOntario

DEN - ONT

DENONT

Denver Intl

Thu 11/6

8:31 am-9:51 am

Nonstop2h 20m

Ontario

Sat 11/8

12:59 am-4:20 am

Nonstop2h 21m

$78

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/14

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

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

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

Currently, January is the cheapest month in which you can book a flight from Colorado to California (average of $246). Flying from Colorado to California in March is currently the most expensive (average of $326). 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 CO to CA?

Find hourly flight availability from Colorado to California. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 14, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Colorado to California as you normally would.

Weekly flight availability from Colorado to California

Explore weekly flight availability from Colorado to California. 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 August 14, 2025.

The most flights from USCO to USCA are scheduled on a Thursday (95 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (37 on average).

How much does it cost to fly round-trip from Colorado to California?

Reviews of airlines servicing California

Get insights into the airlines that provide service to California. 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 California. Reviews last updated August 14, 2025.
Peruse reviews from past customers who have flown with Southwest, Delta, and United Airlines from Colorado to California to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,244 reviews

Crew

8.6

Overall

8.0

Food

7.0

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Southwest
8.0
Very good
4,244 reviews
Southwest
8.0
Very good
4,244 reviews

Crew

8.6

Overall

8.0

Food

7.0

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Delta
8.0
Very good
7,980 reviews
Southwest
8.0
Very good
4,244 reviews

Crew

8.6

Overall

8.0

Food

7.0

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
United Airlines
7.4
Good
8,916 reviews
Southwest
8.0
Very good
4,244 reviews

Crew

8.6

Overall

8.0

Food

7.0

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,244 reviews

Crew

8.6

Overall

8.0

Food

7.0

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Frontier
5.8
Fair
3,219 reviews
Southwest
8.0
Very good
4,244 reviews

Crew

8.6

Overall

8.0

Food

7.0

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

Related info for your journey

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

  • How popular is this Colorado to California flight route?

    Within the past month, 369 users have taken a look at flights from Colorado to California.

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

    The cheapest airlines for a one-way flight from Colorado to California are Frontier ($39), Southwest ($69), and Delta ($70).

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Colorado to California (average of $246). Flying from Colorado to California in March is currently the most expensive (average of $326). 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

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Alternative routes for Colorado to California

See prices for flight routes from nearby airports that may be better suited for you.
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Top 9 airlines flying from Colorado to California

Discover the top 9 airlines that operate flights from Colorado to California. 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 August 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$45Average$158FlexibilityNo cancel feeOn-time62%
Allegiant AirCheapest$52Average$98FlexibilityNo cancel feeOn-time88%
Breeze AirwaysCheapest$98Average$185FlexibilityNo cancel feeOn-timeN/A
DeltaCheapest$104Average$302FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$122Average$338FlexibilityNo cancel feeOn-time63%
Hawaiian AirlinesCheapest$137Average$177FlexibilityNo cancel feeOn-time85%
Alaska AirlinesCheapest$147Average$327FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$147Average$410FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$151Average$365FlexibilityNo cancel feeOn-time71%

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