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

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 Denver.

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

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Denver from California 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 Denver?

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 to Denver with an airline and back to California with another airline.

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

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 to Denver from California up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

$33 CHEAP FLIGHTS from California to Denver

Save 21% or more on flights. Compare deals from all over the web.

Never overpay with our price tracking tools.

Filter searches by price, airline and more to find your best flights.

Flight Deals

Cheap Flights from California to Denver

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Last minute

Direct

Recent round-trip flight deals from California to Denver

Thu, Dec 17 - Mon, Dec 21

6:20 am - 9:44 amONT Ontario-DEN Denver Intl

2h 24mnonstop

10:55 pm - 12:20 amDEN Denver Intl-ONT Ontario

2h 25mnonstop

$94Frontier

Thu, Nov 12 - Sat, Nov 14

11:52 am - 3:13 pmONT Ontario-DEN Denver Intl

2h 21mnonstop

9:17 am - 10:42 amDEN Denver Intl-ONT Ontario

2h 25mnonstop

$94Frontier

Sat, Oct 31 - Tue, Nov 3

6:02 am - 2:08 pmONT Ontario-DEN Denver Intl

7h 06m1 stop Seattle/Tacoma Intl

10:29 pm - 11:51 pmDEN Denver Intl-ONT Ontario

2h 22mnonstop

$122Multiple Airlines

Sat, Dec 5 - Sat, Jan 16

11:30 am - 2:55 pmONT Ontario-DEN Denver Intl

2h 25mnonstop

2:55 pm - 8:02 pmDEN Denver Intl-ONT Ontario

6h 07m1 stop Portland

$122Multiple Airlines

Thu, Oct 29 - Thu, Nov 5

5:40 am - 8:55 amONT Ontario-DEN Denver Intl

2h 15mnonstop

9:20 pm - 10:45 pmDEN Denver Intl-ONT Ontario

2h 25mnonstop

$157Southwest

Thu, Dec 3 - Tue, Dec 8

1:55 pm - 5:05 pmONT Ontario-DEN Denver Intl

2h 10mnonstop

1:15 pm - 2:40 pmDEN Denver Intl-ONT Ontario

2h 25mnonstop

$157Southwest

Sat, Dec 5 - Sat, Jan 16

5:00 am - 8:17 amONT Ontario-DEN Denver Intl

2h 17mnonstop

7:05 pm - 8:20 pmDEN Denver Intl-ONT Ontario

2h 15mnonstop

$157United Airlines

Wed, Nov 11 - Sat, Nov 14

2:44 pm - 6:15 pmLAX Los Angeles-DEN Denver Intl

2h 31mnonstop

7:09 am - 9:20 amDEN Denver Intl-LAX Los Angeles

3h 11mnonstop

$157American Airlines

Wed, Oct 21 - Mon, Oct 26

6:30 pm - 9:55 pmLAX Los Angeles-DEN Denver Intl

2h 25mnonstop

11:58 am - 1:42 pmDEN Denver Intl-LAX Los Angeles

2h 44mnonstop

$157American Airlines

Thu, Dec 17 - Tue, Dec 22

5:00 am - 8:21 amONT Ontario-DEN Denver Intl

2h 21mnonstop

7:35 pm - 9:00 pmDEN Denver Intl-ONT Ontario

2h 25mnonstop

$181United Airlines

Recent last minute flight deals from California to Denver

Wed, Oct 7 - Mon, Oct 12

8:44 am - 3:41 pmLAX Los Angeles-DEN Denver Intl

5h 57m1 stop San Francisco

1:05 pm - 5:41 pmDEN Denver Intl-LAX Los Angeles

5h 36m1 stop Las Vegas Harry Reid Intl

$119Frontier

Wed, Oct 7 - Wed, Oct 28

6:05 am - 9:32 amLAX Los Angeles-DEN Denver Intl

2h 27mnonstop

9:10 am - 10:47 amDEN Denver Intl-LAX Los Angeles

2h 37mnonstop

$159Frontier

Mon, Oct 5 - Tue, Oct 6

8:45 am - 12:22 pmSJC San Jose-DEN Denver Intl

2h 37mnonstop

7:07 pm - 8:48 pmDEN Denver Intl-SJC San Jose

2h 41mnonstop

$259United Airlines

Tue, Oct 6 - Tue, Oct 13

7:00 am - 10:33 amSAN San Diego-DEN Denver Intl

2h 33mnonstop

12:31 pm - 2:01 pmDEN Denver Intl-SAN San Diego

2h 30mnonstop

$314Alaska Airlines

Tue, Oct 6 - Tue, Oct 13

6:15 am - 12:14 pmSAN San Diego-DEN Denver Intl

4h 59m1 stop Los Angeles

6:59 pm - 8:34 pmDEN Denver Intl-SAN San Diego

2h 35mnonstop

$321Alaska Airlines

Fri, Oct 2 - Mon, Nov 23

11:58 pm - 8:15 amSFO San Francisco-DEN Denver Intl

7h 17m1 stop Dallas/Fort Worth

6:01 am - 2:57 pmDEN Denver Intl-SFO San Francisco

9h 56m2 stops Seattle/Tacoma Intl Los Angeles

$352Multiple Airlines

Tue, Oct 6 - Sun, Oct 11

6:04 am - 9:46 amSFO San Francisco-DEN Denver Intl

2h 42mnonstop

5:50 pm - 10:37 amDEN Denver Intl-SFO San Francisco

41h 47m2 stops Vernal Regional Phoenix Sky Harbor Intl

$360Multiple Airlines

Fri, Oct 2 - Sat, Oct 3

7:14 pm - 10:41 pmLAX Los Angeles-DEN Denver Intl

2h 27mnonstop

6:11 pm - 7:51 pmDEN Denver Intl-LAX Los Angeles

2h 40mnonstop

$406American Airlines

Fri, Oct 2 - Sat, Oct 3

6:30 am - 11:27 amLAX Los Angeles-DEN Denver Intl

3h 57m1 stop Phoenix Sky Harbor Intl

11:06 am - 12:44 pmDEN Denver Intl-LAX Los Angeles

2h 38mnonstop

$416American Airlines

Wed, Oct 7 - Tue, Oct 13

2:35 pm - 6:03 pmLAX Los Angeles-DEN Denver Intl

2h 28mnonstop

1:30 pm - 3:03 pmDEN Denver Intl-LAX Los Angeles

2h 33mnonstop

$433United Airlines

Useful Info

Low season	April
High season	December
Cheapest flight	$33

Best time to beat the crowds with an average 11% drop in price.

Most popular time to fly and prices are also 5% lower on average.

Flight from Ontario to Denver

Verified travelerFlew with Delta-Apr 2025

It’s an easy short flight, so a quick recharge nap is nice. A neck pillow is recommended.

Verified travelerFlew with Lufthansa-Mar 2024

Palm Springs is beautiful airport, check in your tickets before arriving. Busy drop off but still manageable.

Verified travelerFlew with United Airlines-Mar 2024

Get TSA PRE and CLEAR. Life will be easy.

MichaelFlew with United Airlines-Mar 2024

Arrive early if you have carry-on luggage. Eat before you get on the plane.

BrianFlew with United Airlines-Jan 2024

Don’t arrive too early since it’s a small airport.

How does KAYAK find such low prices on flights from California to Denver?
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 Denver.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from California to Denver?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Denver from California 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 Denver?
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 to Denver with an airline and back to California with another airline.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from California to Denver?
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 to Denver from California up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Westminster

Lakewood

Dillon

Broomfield

Englewood

Greenwood Village

Lone Tree

Central City

Limon

Brighton

Wheat Ridge

Fort Morgan

Evergreen

Erie

More options for your flight to Denver

Add a hotel or car rental

Airports

Cabin class

Direct Flights

Origins

Other destinations

Return flight

Complete your trip to Denver with a hotel stay or car rental

Car rentals in Denver

DEN

$33 Find Cheap Flights from California to Denver - Compare and Save

Cheap Flights from California to Denver

Recent round-trip flight deals from California to Denver

Recent one-way flight deals from California to Denver

Recent last minute flight deals from California to Denver

Recent direct flight deals from California to Denver

Good to know

Low season

High season

Cheapest flight

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

FAQs for booking flights from California to Denver

Traveling to a place near Denver?

More options for your flight to Denver

Complete your trip to Denver with a hotel stay or car rental

Information on the airport you'll fly into in Denver

Cabin class types available on flights to California

Find direct flights for Denver

Flights from domestic origins to Denver

Flights to other popular destinations

Find deals for your return flight