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Colorado

$39+ Cheap flights from California to Colorado

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 10/9. 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 Colorado

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

Round-trip from

$67
(Frontier)

One-way from

$39
(Frontier)

Popular in

June

Cheapest in

January

Average price

$180

Good round-trip deal

$95 or less

Good one-way deal

$70 or less
From California to Colorado
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One-way flight from California to Colorado
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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 Colorado.
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Price to beat on a one-way flight from California to Colorado.
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Find flight deals from California to Colorado

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

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.
Fri 12/511:52 amONT - DEN
Nonstop2h 22mFrontier
Sun 12/79:30 amDEN - ONT
Nonstop2h 27mFrontier
Deal found 9/13$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 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
This Priceline 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/38:59 pmONT - DEN
Nonstop2h 27mFrontier
Mon 10/68:49 pmDEN - ONT
Nonstop2h 24mFrontier
Deal found 9/13$76
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 9/289:03 pmSAN - DEN
Nonstop2h 35mFrontier
Tue 9/308:50 pmDEN - SAN
Nonstop2h 34mFrontier
Deal found 9/13$81
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.
Tue 9/308:59 pmONT - DEN
Nonstop2h 27mFrontier
Wed 10/810:29 pmDEN - ONT
Nonstop2h 21mFrontier
Deal found 9/12$81

Cheapflights Fare Finder

 
Customize your flight search to find flights from California to Colorado 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 Colorado that are best for you.

Fly from

California

Fly to

Colorado

Route

Depart

Return

Price

Las VegasDenver

LAS - DEN

LASDEN

Las Vegas Harry Reid Intl

Fri 10/3

6:00 am-9:05 am

Nonstop2h 05m

Denver Intl

Fri 10/10

1:49 pm-2:51 pm

Nonstop2h 02m

$90

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

Tue 10/21

8:15 pm-11:50 pm

Nonstop2h 35m

Denver Intl

Mon 10/27

8:10 pm-11:15 pm

1 stop4h 05m

$99

Las VegasDenver

LAS - DEN

LASDEN

Las Vegas Harry Reid Intl

Thu 10/9

12:59 am-3:59 am

Nonstop2h 00m

Denver Intl

Mon 10/13

6:00 am-9:50 am

1 stop4h 50m

$104

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 10/25

8:00 am-2:10 pm

1 stop5h 10m

Denver Intl

Mon 10/27

1:56 pm-2:58 pm

Nonstop2h 02m

$105

San DiegoDenver

SAN - DEN

SANDEN

San Diego

Wed 11/12

4:50 pm-9:35 pm

1 stop3h 45m

Denver Intl

Sun 11/16

5:40 am-7:15 am

Nonstop2h 35m

$105

Las VegasDenver

LAS - DEN

LASDEN

Las Vegas Harry Reid Intl

Sat 11/8

2:03 pm-9:49 pm

1 stop6h 46m

Denver Intl

Sun 11/9

6:25 am-7:29 am

Nonstop2h 04m

$105

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

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

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

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

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

Currently, October is the cheapest month in which you can book a flight from California to Colorado (average of $197). Flying from California to Colorado 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 CO?

Find hourly flight availability from California to Colorado. 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.

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

Weekly flight availability from California to Colorado

Explore weekly flight availability from California to Colorado. 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 USCO are scheduled on a Friday (103 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (54 on average).

Reviews of airlines servicing Colorado

Get insights into the airlines that provide service to Colorado. 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 Colorado. Reviews last updated September 15, 2025.
Peruse reviews from past customers who have flown with Southwest, Delta, and United Airlines from California to Colorado 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
4,242 reviews

Overall

8.0

Boarding

8.1

Comfort

8.0

Crew

8.6

Entertainment

7.5

Food

7.0

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
4,242 reviews
Southwest
8.0
Very good
4,242 reviews

Overall

8.0

Boarding

8.1

Comfort

8.0

Crew

8.6

Entertainment

7.5

Food

7.0

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
7,954 reviews
Southwest
8.0
Very good
4,242 reviews

Overall

8.0

Boarding

8.1

Comfort

8.0

Crew

8.6

Entertainment

7.5

Food

7.0

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
8,929 reviews
Southwest
8.0
Very good
4,242 reviews

Overall

8.0

Boarding

8.1

Comfort

8.0

Crew

8.6

Entertainment

7.5

Food

7.0

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
4,242 reviews

Overall

8.0

Boarding

8.1

Comfort

8.0

Crew

8.6

Entertainment

7.5

Food

7.0

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
3,172 reviews
Southwest
8.0
Very good
4,242 reviews

Overall

8.0

Boarding

8.1

Comfort

8.0

Crew

8.6

Entertainment

7.5

Food

7.0

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 California to Colorado. 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 California to Colorado flight route?

    The California to Colorado flight path was viewed by 401 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 California to Colorado?

    A quick flight from California to Colorado can take about 2h 05m. Frontier provides one of the quickest options available for as low as $90. The distance from California to Colorado is about 626 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    The cheapest airline one-way is Frontier, with whom users have recently found tickets for as low as $40. However, be on the lookout for offers from Hawaiian Airlines and United Airlines, as they are both options that can get you from California to Colorado for a low price.

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

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

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

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

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

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

    Currently, October is the cheapest month in which you can book a flight from California to Colorado (average of $197). Flying from California to Colorado 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

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Alternative routes for California to Colorado

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

Discover the top 9 airlines that operate flights from California to Colorado. 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$150FlexibilityNo cancel feeOn-time62%
Allegiant AirCheapest$71Average$113FlexibilityNo cancel feeOn-time88%
Breeze AirwaysCheapest$98Average$174FlexibilityNo cancel feeOn-timeN/A
DeltaCheapest$98Average$312FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$98Average$197FlexibilityNo cancel feeOn-time85%
Alaska AirlinesCheapest$117Average$421FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$121Average$369FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$136Average$444FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$148Average$389FlexibilityNo cancel feeOn-time71%

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