$64+ Cheap flights from Denver (DEN) to Costa Mesa, CA
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 9/30. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — LAX
Oct 18 — Oct 251
1 adult, Economy
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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 January or February, booked 41 days in advance, depart on a Friday or Thursday and return on a Saturday
Cheap flight deals from Denver to Costa Mesa
Keep the following information in mind while searching for Denver to Costa Mesa flight deals. Data was last updated September 18, 2025.
Round-trip from | $94 (Cheapflightsfares) |
|---|---|
One-way from | $64 (Frontier) |
Popular in | June |
Cheapest in | January |
Average price | $176 |
Find flight deals from Denver to Costa Mesa
Cheapest flights from Denver to Costa MesaExplore the most affordable flight options available from Denver to Costa Mesa. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 18, 2025.
Explore the most affordable flight options available from Denver to Costa Mesa. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 18, 2025.
This Cheapflightsfares deal was found by Cheapflights users on 9/17. 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 11/110:55 pmDEN - LAX
Nonstop2h 30mFrontier
Thu 11/612:44 pmLAX - DEN
Nonstop2h 39mFrontier
Deal found 9/17![Frontier logo]()
$93
This Cheapflightsfares deal was found by Cheapflights users on 9/16. 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 9/2310:55 pmDEN - LAX
Nonstop2h 32mFrontier
Tue 9/301:37 pmLAX - DEN
Nonstop2h 36mFrontier
Deal found 9/16![Frontier logo]()
$94
This Cheapflightsfares deal was found by Cheapflights users on 9/17. 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 10/110:55 pmDEN - LAX
Nonstop2h 32mFrontier
Fri 10/109:17 pmLAX - DEN
Nonstop2h 35mFrontier
Deal found 9/17![Frontier logo]()
$95
This Flightnetwork deal was found by Cheapflights users on 9/17. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/46:39 pmDEN - LAX
Nonstop2h 34mFrontier
Thu 10/910:21 amLAX - DEN
Nonstop2h 31mFrontier
Deal found 9/17![Frontier logo]()
$96
This Cheapflightsfares deal was found by Cheapflights users on 9/16. 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 10/1510:45 amDEN - LAX
Nonstop2h 34mFrontier
Fri 10/179:17 pmLAX - DEN
Nonstop2h 35mFrontier
Deal found 9/16![Frontier logo]()
$97
This CheapOair deal was found by Cheapflights users on 9/17. 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.
Sat 11/110:55 pmDEN - LAX
Nonstop2h 30mFrontier
Mon 11/36:44 amLAX - DEN
Nonstop2h 34mFrontier
Deal found 9/17![Frontier logo]()
$98
This Frontier deal was found by Cheapflights users on 9/16. 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.
Sat 11/110:55 pmDEN - LAX
Nonstop2h 30mFrontier
Fri 11/74:17 pmLAX - DEN
1 stop4h 32mFrontier
Deal found 9/16![Frontier logo]()
$99
This Kiwi.com deal was found by Cheapflights users on 9/17. 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 10/316:30 amDEN - LAX
Nonstop2h 35mFrontier
Sat 11/82:48 pmLAX - DEN
Nonstop2h 37mFrontier
Deal found 9/17![Frontier logo]()
$100
This Cheapflightsfares deal was found by Cheapflights users on 9/16. 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 11/146:30 amDEN - LAX
Nonstop2h 35mFrontier
Wed 11/192:13 pmLAX - DEN
Nonstop2h 37mFrontier
Deal found 9/16![Frontier logo]()
$101
This Frontier deal was found by Cheapflights users on 9/16. 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 12/410:51 pmDEN - LAX
Nonstop2h 39mFrontier
Sun 12/74:59 pmLAX - DEN
Nonstop2h 31mFrontier
Deal found 9/16![Frontier logo]()
$102
This Kiwi.com deal was found by Cheapflights users on 9/16. 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 10/44:00 pmDEN - LAX
Nonstop2h 30mFrontier
Fri 10/1010:21 amLAX - DEN
Nonstop2h 31mFrontier
Deal found 9/16![Frontier logo]()
$103
This Kiwi.com deal was found by Cheapflights users on 9/16. 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 10/316:30 amDEN - LAX
Nonstop2h 35mFrontier
Mon 11/109:22 pmLAX - DEN
Nonstop2h 35mFrontier
Deal found 9/16![Frontier logo]()
$104
Cheapflights Fare Finder
Customize your flight search to find flights from Denver to Costa Mesa 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 18, 2025.
Use the filters below to find and compare flights from Denver to Costa Mesa that are best for you.
Fly from
Denver
Fly to
Costa Mesa
Route
Depart
Return
Price
DenverLos Angeles
DEN - LAX
DENLAX
Denver Intl
Fri 10/31
10:55 pm-12:25 am
Nonstop2h 30m
Los Angeles
Mon 11/10
9:22 pm-12:57 am
Nonstop2h 35m
$104
DenverLos Angeles
DEN - LAX
DENLAX
Denver Intl
Mon 11/3
6:30 am-8:05 am
Nonstop2h 35m
Los Angeles
Fri 11/7
4:17 pm-9:49 pm
1 stop4h 32m
$117
DenverLos Angeles
DEN - LAX
DENLAX
Denver Intl
Sat 10/18
10:00 am-1:35 pm
1 stop4h 35m
Los Angeles
Wed 10/22
6:45 am-10:19 am
Nonstop2h 34m
$129
DenverLos Angeles
DEN - LAX
DENLAX
Denver Intl
Wed 10/8
12:43 pm-2:09 pm
Nonstop2h 26m
Los Angeles
Wed 10/8
8:25 pm-11:50 pm
Nonstop2h 25m
$137
DenverLos Angeles
DEN - LAX
DENLAX
Denver Intl
Tue 12/2
7:28 pm-9:03 pm
Nonstop2h 35m
Los Angeles
Sat 12/6
3:09 pm-6:31 pm
Nonstop2h 22m
$138
DenverLos Angeles
DEN - LAX
DENLAX
Denver Intl
Thu 9/25
10:55 pm-12:27 am
Nonstop2h 32m
Los Angeles
Sat 10/4
2:31 pm-6:04 pm
Nonstop2h 33m
$140
DenverLos Angeles
DEN - LAX
DENLAX
Denver Intl
Thu 10/9
6:00 am-9:26 am
1 stop4h 26m
Los Angeles
Sun 10/19
2:27 pm-8:15 am
1 stop16h 48m
$142
DenverLos Angeles
DEN - LAX
DENLAX
Denver Intl
Fri 10/3
12:59 am-12:13 pm
1 stop12h 14m
Los Angeles
Tue 10/7
3:19 pm-10:18 am
1 stop17h 59m
$142
DenverLos Angeles
DEN - LAX
DENLAX
Denver Intl
Wed 11/5
12:59 am-12:28 pm
1 stop12h 29m
Los Angeles
Sun 11/9
12:37 pm-12:47 am
1 stop11h 10m
$144
DenverLos Angeles
DEN - LAX
DENLAX
Denver Intl
Sat 10/18
10:00 am-1:35 pm
1 stop4h 35m
Los Angeles
Mon 10/20
2:15 pm-7:36 am
1 stop16h 21m
$144
Showing 1-10 of 23 results
Best time to book a flight from Denver to Costa Mesa
Have a flexible travel schedule? Discover the best time to fly to Costa Mesa from Denver 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 Denver to Costa Mesa
How far ahead should I book a flight from Denver to Costa Mesa?
Use this chart to determine the optimal time to book a round-trip flight from Denver to Costa Mesa. Price data was last updated on September 12, 2025.
The price you pay for your flight from Denver to Costa Mesa may vary depending on when you book. For the best chance of a lower fare, look to book 41 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
What is the cheapest month to book a flight from Denver to Costa Mesa?
Currently, January is the cheapest month in which you can book a flight from Denver to Costa Mesa (average of $246). Flying from Denver to Costa Mesa in March is currently the most expensive (average of $325). 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 DEN to CM3?
Find hourly flight availability from Denver to Costa Mesa. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 18, 2025.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Denver to Costa Mesa as you normally would.
What is the cheapest day to fly from Denver to Costa Mesa?
Use this chart to determine the cheapest time to fly round-trip from Denver to Costa Mesa. Price data was last updated on September 14, 2025.
Travelers seeking maximum savings on their Denver to Costa Mesa flight should consider departing on Thursday evenings when fares are most often at their lowest. Monday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.
Weekly flight availability from Denver to Costa Mesa
Explore weekly flight availability from Denver to Costa Mesa. 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 18, 2025.
The most flights from DEN to CM3 are scheduled on a Monday (100 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (67 on average).
Reviews of airlines servicing Costa Mesa
Get insights into the airlines that provide service to Costa Mesa. 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 Costa Mesa. Reviews last updated September 18, 2025.
Read through reviews of airlines operating flights from Denver to Costa Mesa, such as Southwest, Delta, and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Entertainment
7.5
Food
7.0
Boarding
8.1
Comfort
8.0
Overall
8.0
Crew
8.6
Reviews
1 / 20
8.0
ExcellentWalter,Aug 2025
OAK - SAN
Entertainment
7.5
Food
7.0
Boarding
8.1
Comfort
8.0
Overall
8.0
Crew
8.6
Reviews
1 / 20
8.0
ExcellentWalter,Aug 2025
OAK - SAN
Entertainment
7.5
Food
7.0
Boarding
8.1
Comfort
8.0
Overall
8.0
Crew
8.6
Reviews
1 / 20
8.0
ExcellentWalter,Aug 2025
OAK - SAN
Entertainment
7.5
Food
7.0
Boarding
8.1
Comfort
8.0
Overall
8.0
Crew
8.6
Reviews
1 / 20
8.0
ExcellentWalter,Aug 2025
OAK - SAN
Entertainment
7.5
Food
7.0
Boarding
8.1
Comfort
8.0
Overall
8.0
Crew
8.6
Reviews
1 / 20
8.0
ExcellentWalter,Aug 2025
OAK - SAN
Entertainment
7.5
Food
7.0
Boarding
8.1
Comfort
8.0
Overall
8.0
Crew
8.6
Reviews
1 / 20
8.0
ExcellentWalter,Aug 2025
OAK - SAN
Related info for your journey
Find useful and relevant information for your journey from Denver to Costa Mesa. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for Denver to Costa Mesa
See prices for flight routes from nearby airports that may be better suited for you.
Top 5 airlines flying from Denver to Costa Mesa
Discover the top 5 airlines that operate flights from Denver to Costa Mesa. 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 18, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$48 | Average$150 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$104 | Average$250 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$120 | Average$279 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$144 | Average$223 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$144 | Average$317 | FlexibilityNo cancel fee | On-time69% |