Costa Mesa

Cheap flights from Denver (DEN) to Costa Mesa, CA

DEN — LAX
Nov 25 — Dec 21
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Denver to Costa Mesa with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.
Cheapflights Tip: The best prices from Denver Intl to Costa Mesa are usually found in February or January, booked 69 days in advance, depart on a Thursday or Friday and return on a Saturday

Find flight deals from Denver to Costa Mesa

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Popular in

June

Cheapest in

February

Average price

$242
Provider with most accurate pricing for Denver Intl-Los Angeles flight deals.
Provider most trusted by Cheapflights users for Denver Intl-Los Angeles flights.
Highest demand for flights based on searches. 6% potential increase in price ($16 potential increase over avg. RT price).
Cheapest flight prices on average. 1% potential price decrease ($4 potential savings vs. average RT price).
Average for round-trip flights in October 2026

Cheapflights Insights

Everything you need to know about your flight from Denver to Costa Mesa

What is the cheapest time of day to fly from DEN to CM3?

Unlike in the afternoon, when flights are generally more expensive, you can save up to 35% on flights from Denver to Costa Mesa by exploring options for tickets in the morning.

What is the cheapest day to fly from Denver to Costa Mesa?

Travelers seeking maximum savings on their Denver to Costa Mesa flight should consider departing on Saturday evenings when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Costa Mesa

Read through reviews of airlines operating flights from Denver to Costa Mesa, such as Southwest,Delta, andUnited Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Crew

8.6

Boarding

8.1

Entertainment

7.4

Food

7.0

Overall

7.9

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Courtney,Sep 2026

DEN - STL

I still think the aircraft should load from the back and window seats first for all passengers. It's so much easier and efficient to board when you do not have to worry about hitting Anyone already seated.

Crew

8.6

Boarding

8.1

Entertainment

7.4

Food

7.0

Overall

7.9

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Courtney,Sep 2026

DEN - STL

I still think the aircraft should load from the back and window seats first for all passengers. It's so much easier and efficient to board when you do not have to worry about hitting Anyone already seated.

Crew

8.6

Boarding

8.1

Entertainment

7.4

Food

7.0

Overall

7.9

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Courtney,Sep 2026

DEN - STL

I still think the aircraft should load from the back and window seats first for all passengers. It's so much easier and efficient to board when you do not have to worry about hitting Anyone already seated.

Crew

8.6

Boarding

8.1

Entertainment

7.4

Food

7.0

Overall

7.9

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Courtney,Sep 2026

DEN - STL

I still think the aircraft should load from the back and window seats first for all passengers. It's so much easier and efficient to board when you do not have to worry about hitting Anyone already seated.

Crew

8.6

Boarding

8.1

Entertainment

7.4

Food

7.0

Overall

7.9

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Courtney,Sep 2026

DEN - STL

I still think the aircraft should load from the back and window seats first for all passengers. It's so much easier and efficient to board when you do not have to worry about hitting Anyone already seated.

Crew

8.6

Boarding

8.1

Entertainment

7.4

Food

7.0

Overall

7.9

Comfort

8.0

Reviews

1 / 20
10.0
Excellent

Courtney,Sep 2026

DEN - STL

I still think the aircraft should load from the back and window seats first for all passengers. It's so much easier and efficient to board when you do not have to worry about hitting Anyone already seated.

Related info for your journey

  • What airport do you fly from for flights from Denver to Costa Mesa?

    For a flight from Denver to Costa Mesa, you will be flying from Denver Intl. Denver Intl (DEN) is just 18.5 mi from the center of the city. Denver Intl is the only Denver airport and it handles 49 outbound flights to Costa Mesa per day. 7 airlines have flights to Costa Mesa from Denver Intl on a regular basis.

  • How popular is this Denver to Costa Mesa flight route?

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

    For one-way options, check prices for Frontier. According to our data, you can fly for as low as $34. Users have also found prices from $77 and $78 on Delta and American Airlines, respectively.

  • What are the most reliable airlines from Denver to Costa Mesa?

    No one likes to see their flight delayed. When booking a flight from Denver to Costa Mesa consider choosing LATAM Airlines (96%), Aeromexico (95%) or WestJet (94%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Denver to Costa Mesa?

    Looking at all options, your cheapest flight can be booked for $68. While the most popular route (Denver Intl - Los Angeles) can be booked for $81 on average, our data indicates $1,049 when flying from Denver to Costa Mesa.

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

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

  • How can I find direct flights from Denver to Costa Mesa?

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

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

    Yes. Cheapflights offers flight deals from Denver to Costa Mesa by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Denver to Costa Mesa

Top 7 airlines flying from Denver to Costa Mesa

AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$58Average$201FlexibilityNo cancel feeOn-time62%
DeltaCheapest$99Average$246FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$141Average$365FlexibilityNo cancel feeOn-time75%
JetBlueCheapest$144Average$236FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$145Average$327FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$157Average$327FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$180Average$315FlexibilityNo cancel feeOn-time71%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.