$37 Find Cheap Flights from California to Colorado

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Low seasonApril
High seasonJuly
Cheapest flight$37
Best time to beat the crowds with an average 13% drop in price.
Most popular time to fly with an average 2% increase in price.
Flight from San Diego to Denver

Flights from California to Colorado: the best tips from KAYAK users

Insights shared by verified travelers who flew the route from California to Colorado 
Verified travelerFlew with DeltaLAX-DENApr 2025
It’s an easy short flight, so a quick recharge nap is nice. A neck pillow is recommended.
Verified travelerFlew with LufthansaPSP-DENMar 2024
Palm Springs is beautiful airport, check in your tickets before arriving. Busy drop off but still manageable.
Verified travelerFlew with United AirlinesSFO-DENMar 2024
Get TSA PRE and CLEAR. Life will be easy.
MichaelFlew with United AirlinesLAX-DENMar 2024
Arrive early if you have carry-on luggage. Eat before you get on the plane.
BrianFlew with United AirlinesSBP-DENJan 2024
Don’t arrive too early since it’s a small airport.

FAQs for booking flights from California to Colorado

  • How does KAYAK find such low prices on flights from California to Colorado?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from California to Colorado.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from California to Colorado?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from California to Colorado is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from California to Colorado?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from California to Colorado with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from California to Colorado?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from California to Colorado up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • Which is the cheapest airport to fly into in Colorado?

    Prices will differ depending on the departure airport, but generally, the cheapest airport to fly to in Colorado is Colorado Springs Airport (COS), with an average flight price of $51.

  • What is the cheapest day to fly to Colorado?

    Based on KAYAK data, the cheapest day to fly to Colorado is Saturday where round-trip tickets can be as cheap as $235. On the other hand, the most expensive day to fly is Sunday, where round-trip prices are $316 on average.

  • What is the cheapest time of day to fly to Colorado?

    The cheapest time of day to fly to Colorado is generally in the evening, when round-trip flights cost $218 on average. Morning departures are around 25% more expensive than evening flights, on average. The most expensive time of day to fly to Colorado is generally in the afternoon, which is peak travel time and where the average cost of a ticket is $293.

  • What is the cheapest flight to Colorado?

    The cheapest ticket to Colorado from California found in the last 72 hours was to Colorado Springs, at $41 round-trip. The most popular route is Burbank (BUR) to Denver (DEN) and the cheapest round-trip airline ticket found on this route in the last 72 hours was $118.

  • What is the cheapest month to fly from California to Colorado?

    The cheapest month for flights from California to Colorado is February, when tickets cost $188 (return) on average. On the other hand, the most expensive months are June and April, when the average cost of round-trip tickets is $331 and $321 respectively.

  • How far in advance should I book a flight from California to Colorado?

    To get a below average price on the flight from California to Colorado, you should book around 3 weeks before departure. For the absolute cheapest price, our data suggests you should book 5 weeks before departure.

  • How long is the flight to Colorado?

    An average nonstop flight from California to Colorado takes 3h 17m, covering a distance of 808 miles. The shortest route is Las Vegas (LAS) to Denver (DEN) with an average flight time of 1h 50m.

  • What are the most popular destinations in Colorado?

    Based on KAYAK flight searches, the most popular destination is Denver (86% of total searches to Colorado). The next most popular destinations are Colorado Springs (4%) and Aspen (3%). Searches for flights to Durango (2%), to Montrose (2%) and to Grand Junction (1%) are also popular.

Reviews of the top 5 airlines serving from California to Colorado

 
Need help choosing which airline to fly with from California to Colorado? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
SouthwestOverall score based on 4250 reviews
7.0Food
8.0Comfort
8.1Boarding
7.6Entertainment
8.6Crew
Airline reviews

Delayed flight. Nicest crew member was a SW pilot flying seated next to me who kindly move to seat the final passenger. Flight extra delayed. My cup of refreshment of ginger ale was so packed with ice it was literally 2 sips.

4.0 OkayTraci, Jun 2025OAK - SEA
Read more Southwest reviews

Delayed flight. Nicest crew member was a SW pilot flying seated next to me who kindly move to seat the final passenger. Flight extra delayed. My cup of refreshment of ginger ale was so packed with ice it was literally 2 sips.

No trays in our seats, we sat in first row, purchased a business class fare. Had to hold our drinks and snack in our hands. No plugs for our cell phones. Had to pay for it a drink cocktail each. Seats so uncomfortable.

Flight wasn’t even full, but too many carry-ons caused us to run out of bin space. New bag fee has folks who would usually check their bags carrying on. Watching Southwest morph into Spirit/Frontier is so sad to watch

Flights delayed by 4-6 hours. Boarding was a mess and unclear. Bags were not at arrival airport and had never even been put on the plane. No idea when I’ll get them. Don’t fly into Denver!

Southwest is Southwest. No frills. If you're luck enough to get a happy crew (we did), then it makes for a nicer flight.

Southwest is typically delayed, and it gets wearisome. It is no longer a discount airline and you get way less than you pay for when it comes to comfort and Ce.

We sat on the plane on the tarmac for 4 hours.

After a 3 hour layover in Denver my flight was delayed over 5 hours! No explanation; no assistance; no offer to provide compensation; no one at Southwest was willing to offer any assistance. 8 hours in the Denver airport - ridiculous!

It was a perfect flight in all aspects! Both legs!

Great flight, 47 passengers on a 180 seat plane. Stewardess was pleasant and cheerful.

My husband upgraded our seats and I don't know if it was due to the type of planet was or if they didn't upgrade our seats. We were supposed to be in I believe comfort seats and they were just as tight as any other seat- no leg room and we are very tall people but at least it wasn't extremely cold. My husband did put in a complaint about our seating because he paid extra and if we would have known that the space and the tightness would have been the same, we just would have gotten the emergency row emergency row seats that we normally get. We love Delta but both our flights coming home we're not good. Oh I forgot to mention that on our flight to Hawaii our luggage wheels got broke and we had to purse new luggage on vacation then we never had this problem so we didn't know protocol and reported it after we got home only for them to tell is we only had 24hrs to report the damage. Not sure what was going on with Delta this vacation trip.

Crew was excellent. Comfort seats not as nice as other kinds of planes.

It was a great flight and the stewards and stewardess were all kind and accommodating!! The seats were comfortable and entertainment screen excellent!

There are 4 flights in consecutive gates with about the same departure time. Two flights were boarding at the same time. One was delayed or boarding would be happening at the same time. I am not sure what Delta and LAX need to do to have a better layout at the end of Terminal 2

There was a security issue at the airport and we were unable to land. We circled endlessly and then landed at another airfield for fuel. We then circled the airport again, almost landed but didn’t fully touch down before circling again. I am thankful to the crew for keeping us safe- the issue was the airline and staff at the airport getting us seats on our connecting flights. That part was hours of searching for someone and getting in double my steps.

Most aspects were good however if they assign boarding zones they ought to enforce them or why bother? My luggage from SAN-JFK-MAD was lost in NY so I without my main bag for two days upon arrival in Spain. They were helpful in tracking it and eventually delivered it to my hotel. The flub was because of a delay upon arrival in NYC. I had booked 2 1/2 hours between flights but we had to hold on the taxiway for an hour after landing while waiting for a clear gate which likely caused the baggage error.

Excellent flight, the planes were newer, they did a nice job with boarding, great service overall.

It would be nice if was given wires ear buds. Overall was a good experience was able to sleep on the plane

My flight was 6 pm 6/6. Every hour they delayed it again - air condition issues then no pilot then the crew had worked too many hours and cancelled the flight at 11 pm. Sent customers to NJ a 45 minutes uber ride to a hotel. Had to be back by 5 am for a 7 am flight and again no pilot etc with another three hours of delays.

737-800 in first class was pretty dumpy. Seat had an uncomfortable angle, storage under the seat was blocked so even my very modest backpack didn't fit, power outlet was flaky. Weird tiny seat pockets that couldn't hold a gallon ziploc bag, emesis bag missing, etc. etc. No in-flight service due to turbulence. Crew was excellent, boarding was smooth despite a full flight.

Very rough getting into denver. my kid threw up it was so rough.

Why wasn't this flight departure scheduled eith another crew so that it could leave on time? When we arrived in Denver we had so little time between flights we had run to the connecting flight. We should received some credit for the inconvenience.

I was supposed to be on business class at first class from Denver back to Miami due to weather changes. I missed my connection and it’s put on a flight to Fort Lauderdale. Instead of honoring my business class/1st class ticket, they put me in coach, but there were two first class seats open. I think it’s absolutely disgusting that I paid for first class $1300 ticket and they put me in economy and they had to open seats available and I have still not been refunded the difference. I ended up having to eat a snack box instead of the meal I was supposed to get and did not get home till 2 AM so I think that’s a little pathetic that I had to live off crackers for dinner And my poor dog ate some cheese and salami. Oh yes, apparently when they switched me to the new flight they forgot to mention I had a service dog

Excellent service despite turbulence during the flight. Flight attendants were remarkable!

Flight attendant moved my bag without notifying me and was rude to me when I asked him about it. There was no reason to move it.

The gate attendant let me walk right by her with a bag too big for the overhead compartment

Food choices were very limited. Taste of the dishes was average.

I liked all the informational texts. I always knew where to go and when .

Received an email the night before showing that there would be seatback entertainment on our flight. We get on and there was no seatback entertainment. And then it was a scramble to try to set up the iPads for the kids before takeoff so they could watch something for the four hour flight.

The reason I don’t fly United. No in seat entertainment for a long flight and inconsistent WiFi and entertainment available from my device.

AA re-routed flight from HNL to LAX due to delay. My group of 3 with reserved seats in row 9 was broken up, with one assigned to a middle seat, another in the last row of the plane. Not happy. No explanation to the delay. No apologies. No compensation. Would have been nice to be offered an Admiral Club admission or a voucher for the extra 3 hours of layover in LAX. Could not hear the boarding gate announcements in LAX. Adjacent gate was boarding at the same time. Loud speakers were competing against each other. Barely made my boarding group.

Almost a 6 hour flight and the only food option is a cheese plate… and chips. Also how is it there are no options for texting on American. I’ll be going back to delta and united.

The chair cushions may need an upgrade. I have been noticing they are so worn out, thin so you’d sit in a dip 😄. Other than that, all was an enjoyable trip. Thanks AA!

Cramped seats. FAA should make airlines have more legroom, for even short people complain

Eventless. It was a good flight and good crew. Can’t complaint.

Very helpful ground crew after an earlier flight delay and being rebooked on a different flight.

Terrible. The flight was delayed two hours due to weather. Then when we got on the plane, the first pilot ended up timing out and we had to wait for a second pilot. Second pile came on board and we tax it out. Had to return back to the gate because of an unruly passenger. Then the copilot timed out. Had to wait for new copilot. Also had to wait for maintenance to check for fuel. Then found out the second pilot timed out and we had to wait for a third pilot. Was ready to go and then needed maintenance again for another issue. In the end, it was 2 o’clock in the morning when they announced that the flight couldn’t go because the third pilot and the second copilot had timed out.

The plane was late and then sat on the runway for almost 45 minutes before taking off.

We kept being told that the flight was full and that all overhead compartments were full and therefore had to check in our hand luggage. We were some of the last people to board and noticed that there was still sufficient space in the overhead compartments. We were obliged to check in hand luggage when there was space and so had to wait at luggage retrieval which took a while to then noticed damage to our luggage - not a great experience!

This was an overnight flight. There was no meal service in first class, just a simple snack basket was offered along with beverages. There should have been some type of continental breakfast prior to arrival in PHL. As an Executive Platinum American Airlines Advantage member, I received no name recognition from the first class flight attendant. When disembarking at PHL, the flight attendants were more interested in their cell phones than saying "thank you" to the passengers as they disembarked.

Terrible communication with weather delay, lost baggage, near impossible to reach customer service

My tickets got canceled on me by your site and I didn't have a flight. Then you kept sending me emails on the status of q flight I didn't have tickets for.

Flight was late. Missed connecting in Denver. My new flight is more than 24 hours later and I have no room, vouchers, or compensation, and might also be bumped from the one tomorrow.

This was one of the first frontier airline flights this spring that wasn't delayed. It actually left on time. Some of the flight crew did not look happy, they didn't smile when the passengers were boarding or getting off the plane, and the passengers initiated greetings, not the staff. To me this was an odd experience to have with any flight/airline. I had a bad experience booking this flight. The price didn't solidify until late hours into the night. Ever time I purchased the ticket, I either received a denial email or an error because the price has changed, but it was never reflected on the flyfrontier or kayak websites until way after midnight on the date of travel. This caused me anxiety and irritation with the websites. Then I noticed a mishap with my name on my voucher as I went to check in, it was incorrect. When I proceeded to correct it, Frontier had no easy, let alone free, way to remedy it. I couldn't correct my name without a $75 charge, I couldn't cancel my voucher to repurchase it with the correct name without a $100 charge, because it was too close to departure. Then calling frontier was nearly impossible to remedy the situation with a human. It's already difficult to want to choose frontier because of all the upcharges, but you feel kinda trapped into doing so because it's the more affordable airline.

Our flight was cancelled. They could do nothing to help us get another flight that was timely. Because the first leg was cancelled we were unable to get to our connection. We had to book on an entirely different airline for today. So we spent more money, lost a day of vacation and will never fly Frontier again, so the 'we are sorry, here is $100 credit' is a joke since we won't be flying on Frontier.

I liked the turn-style feature at gate 209B at LAX. Very efficient process. The gate staff also made several, clearly directed announcements so I felt very informed.

Seats are uncomfortable but price is good. Guess I can put up with misery for four hours.

The plane failed preflight inspection, so we sat there for 90 mins while they tried to fix it. Ultimately, everything was remedied and we made our connecting flight; instead of a 2 hour layover at the airport, we spent it waiting on the plane.

I loked walking out on the tarmac to board and no first class. I didn't like that they have no snacks or onboard wifi to bide your time.

The seats were extremely hard and uncomfortable. It was disappointing even for a budget airline.

Book cheap flights from California to Colorado

Recent round-trip flight deals

9/2Tue
nonstopFrontier
2h 36mLAX-DEN
9/9Tue
nonstopFrontier
2h 32mDEN-LAX
$70
9/6Sat
nonstopFrontier
2h 33mLAX-DEN
9/8Mon
nonstopFrontier
2h 32mDEN-LAX
$73
8/18Mon
nonstopSouthwest
2h 20mLAX-DEN
8/20Wed
nonstopSouthwest
2h 40mDEN-LAX
$93
9/18Thu
1 stopSouthwest
3h 50mLAX-DEN
9/22Mon
nonstopSouthwest
2h 30mDEN-LAX
$98
8/7Thu
nonstopDelta
2h 24mLAX-DEN
8/11Mon
nonstopDelta
2h 26mDEN-LAX
$117
8/8Fri
nonstopDelta
2h 22mLAX-DEN
8/19Tue
nonstopDelta
2h 26mDEN-LAX
$118
8/6Wed
nonstopUnited Airlines
2h 40mSFO-DEN
8/9Sat
nonstopUnited Airlines
2h 42mDEN-SFO
$133
8/6Wed
nonstopUnited Airlines
2h 32mSJC-DEN
8/13Wed
nonstopUnited Airlines
2h 37mDEN-SJC
$133
8/7Thu
1 stopAmerican Airlines
5h 08mSFO-DEN
8/11Mon
1 stopAmerican Airlines
6h 26mDEN-SFO
$159
9/24Wed
1 stopAmerican Airlines
7h 27mSMF-DEN
9/27Sat
1 stopAmerican Airlines
5h 12mDEN-SMF
$159

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Recent one-way flight deals

10/11Sat
nonstopFrontier
2h 33mSAN-DEN
$37
7/29Tue
nonstopFrontier
2h 20mONT-DEN
$39
8/21Thu
nonstopSouthwest
2h 15mLAX-DEN
$47
11/6Thu
nonstopSouthwest
1h 50mLAS-DEN
$51
8/12Tue
nonstopUnited Airlines
1h 59mLAS-DEN
$59
8/9Sat
nonstopDelta
2h 30mLAX-DEN
$59
8/8Fri
nonstopDelta
2h 22mLAX-DEN
$60
8/7Thu
nonstopAmerican Airlines
2h 25mLAX-DEN
$66
8/20Wed
nonstopUnited Airlines
2h 28mSAN-DEN
$67
8/13Wed
1 stopAmerican Airlines
4h 35mSNA-DEN
$79

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Last minute flights from California to Colorado

Last minute flight, train and bus deals

7/15Tue
nonstopFrontier
2h 23mONT-DEN
7/30Wed
nonstopFrontier
2h 20mDEN-ONT
$114
7/15Tue
nonstopFrontier
2h 37mSAN-DEN
7/22Tue
multi-stopFrontier
5h 19mDEN-SAN
$117
7/15Tue
nonstopFrontier
2h 01mLAS-DEN
7/18Fri
nonstopFrontier
2h 05mDEN-LAS
$120
7/15Tue
nonstopSouthwest
2h 20mBUR-DEN
7/22Tue
nonstopSouthwest
2h 25mDEN-BUR
$514
7/15Tue
multi-stopSouthwest
4h 40mBUR-DEN
7/22Tue
nonstopSouthwest
2h 30mDEN-BUR
$524
7/13Sun
nonstopUnited Airlines
2h 26mSMF-DEN
8/10Sun
nonstopUnited Airlines
2h 34mDEN-SMF
$540
7/13Sun
multi-stopUnited Airlines
5h 04mSMF-DEN
8/10Sun
nonstopUnited Airlines
2h 35mDEN-SMF
$550
7/13Sun
multi-stopDelta
7h 00mBUR-DEN
7/24Thu
multi-stopDelta
4h 38mDEN-BUR
$622
7/13Sun
multi-stopDelta
7h 00mBUR-DEN
7/23Wed
multi-stopDelta
4h 38mDEN-BUR
$638
7/12Sat
multi-stopAmerican Airlines
15h 40mRNO-DEN
7/26Sat
multi-stopAmerican Airlines
5h 12mDEN-RNO
$678

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Everything you need to know for your flight to Colorado

Cabin class types available on flights to California

Cabin classes available on flights to California. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.

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