$71+ Cheap flights from Chicago (CHI) 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 10/4. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — LAX
Oct 15 — Oct 221
1 adult, Economy
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Find cheap flights from Chicago 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 Chicago to Costa Mesa are usually found in January or August, booked 24 days in advance, depart on a Friday or Thursday and return on a Wednesday
Cheap flight deals from Chicago to Costa Mesa
Keep the following information in mind while searching for Chicago to Costa Mesa flight deals. Data was last updated September 15, 2025.
Round-trip from | $123 (Cheapflightsfares) |
|---|---|
One-way from | $71 (Expedia) |
Popular in | December |
Cheapest in | January |
Average price | $250 |
Find flight deals from Chicago to Costa Mesa
Cheapest flights from Chicago to Costa MesaExplore the most affordable flight options available from Chicago to Costa Mesa. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 15, 2025.
Explore the most affordable flight options available from Chicago to Costa Mesa. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 15, 2025.
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.
Wed 10/19:00 amORD - LAX
1 stop6h 33mMultiple Airlines
Fri 10/34:21 pmLAX - ORD
Nonstop4h 22mMultiple Airlines
Deal found 9/12![Multiple Airlines logo]()
$123
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.
Wed 10/19:00 amORD - LAX
1 stop11h 55mSpirit Airlines
Thu 10/26:15 amLAX - ORD
1 stop13h 21mSpirit Airlines
Deal found 9/13![Spirit Airlines logo]()
$124
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.
Fri 10/312:54 pmORD - LAX
Nonstop4h 30mSpirit Airlines
Sat 10/119:22 amLAX - ORD
1 stop12h 55mSpirit Airlines
Deal found 9/13![Spirit Airlines logo]()
$126
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 9/3011:15 amORD - LAX
1 stop9h 40mMultiple Airlines
Thu 10/21:45 pmLAX - ORD
1 stop6h 55mMultiple Airlines
Deal found 9/12![Multiple Airlines logo]()
$127
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.
Thu 10/26:30 amORD - LAX
Nonstop4h 29mMultiple Airlines
Thu 10/212:05 pmLAX - ORD
Nonstop4h 09mMultiple Airlines
Deal found 9/12![Multiple Airlines logo]()
$128
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.
Fri 10/312:54 pmORD - LAX
Nonstop4h 30mMultiple Airlines
Tue 10/71:15 pmLAX - ORD
1 stop8h 38mMultiple Airlines
Deal found 9/13![Multiple Airlines logo]()
$129
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.
Sat 10/47:00 amORD - LAX
Nonstop4h 29mFrontier
Tue 10/76:45 amLAX - ORD
1 stop15h 08mFrontier
Deal found 9/13![Frontier logo]()
$130
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 10/36:30 amORD - LAX
Nonstop4h 29mFrontier
Sat 10/44:51 pmLAX - ORD
Nonstop4h 22mFrontier
Deal found 9/12![Frontier logo]()
$131
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.
Thu 10/27:09 pmORD - LAX
Nonstop4h 31mMultiple Airlines
Fri 10/31:45 pmLAX - ORD
1 stop6h 55mMultiple Airlines
Deal found 9/12![Multiple Airlines logo]()
$133
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.
Sat 9/277:09 pmORD - LAX
Nonstop4h 31mSpirit Airlines
Thu 10/27:50 pmLAX - ORD
1 stop14h 01mSpirit Airlines
Deal found 9/13![Spirit Airlines logo]()
$134
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/236:24 pmMDW - LAX
1 stop8h 01mFrontier
Sun 10/266:44 amLAX - MDW
1 stop15h 52mFrontier
Deal found 9/12![Frontier logo]()
$157
This Booking.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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/3012:30 pmMDW - LAX
1 stop21h 35mFrontier
Sun 11/25:44 amLAX - MDW
1 stop26h 46mFrontier
Deal found 9/13![Frontier logo]()
$158
Cheapflights Fare Finder
Customize your flight search to find flights from Chicago 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 15, 2025.
Use the filters below to find and compare flights from Chicago to Costa Mesa that are best for you.
Fly from
Chicago
Fly to
Costa Mesa
Route
Depart
Return
Price
ChicagoLos Angeles
MDW - LAX
MDWLAX
Chicago Midway
Sat 11/1
8:25 pm-10:55 pm
Nonstop4h 30m
Los Angeles
Sat 11/8
11:15 pm-5:15 am
Nonstop4h 00m
$197
ChicagoLos Angeles
ORD - LAX
ORDLAX
Chicago O'Hare Intl
Thu 10/23
1:05 pm-3:34 pm
Nonstop4h 29m
Los Angeles
Sun 10/26
11:20 pm-5:16 am
Nonstop3h 56m
$197
ChicagoLos Angeles
MDW - LAX
MDWLAX
Chicago Midway
Wed 11/12
8:55 pm-11:25 pm
Nonstop4h 30m
Los Angeles
Sat 11/15
11:15 pm-5:15 am
Nonstop4h 00m
$197
ChicagoLos Angeles
ORD - LAX
ORDLAX
Chicago O'Hare Intl
Wed 11/12
8:14 pm-10:57 pm
Nonstop4h 43m
Los Angeles
Fri 11/14
12:25 am-6:29 am
Nonstop4h 04m
$197
ChicagoLos Angeles
MDW - LAX
MDWLAX
Chicago Midway
Tue 10/28
5:55 pm-8:25 pm
Nonstop4h 30m
Los Angeles
Tue 10/28
11:00 pm-5:00 am
Nonstop4h 00m
$197
ChicagoLos Angeles
MDW - LAX
MDWLAX
Chicago Midway
Sat 2/21
5:55 pm-10:20 pm
1 stop6h 25m
Los Angeles
Mon 2/23
8:40 pm-5:05 am
1 stop6h 25m
$201
ChicagoLos Angeles
ORD - LAX
ORDLAX
Chicago O'Hare Intl
Wed 11/5
1:00 pm-3:30 pm
Nonstop4h 30m
Los Angeles
Sat 11/8
12:25 am-6:29 am
Nonstop4h 04m
$215
ChicagoLos Angeles
MDW - LAX
MDWLAX
Chicago Midway
Fri 10/24
9:25 pm-11:55 pm
Nonstop4h 30m
Los Angeles
Tue 10/28
11:00 pm-5:00 am
Nonstop4h 00m
$215
ChicagoLos Angeles
MDW - LAX
MDWLAX
Chicago Midway
Wed 11/5
8:55 pm-11:25 pm
Nonstop4h 30m
Los Angeles
Mon 11/10
11:15 pm-5:15 am
Nonstop4h 00m
$215
ChicagoLos Angeles
MDW - LAX
MDWLAX
Chicago Midway
Sat 11/8
9:20 am-3:00 pm
1 stop7h 40m
Los Angeles
Sat 11/8
9:45 pm-9:52 am
1 stop10h 07m
$217
Showing 1-10 of 42 results
Best time to book a flight from Chicago to Costa Mesa
Have a flexible travel schedule? Discover the best time to fly to Costa Mesa from Chicago 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 Chicago to Costa Mesa
How far ahead should I book a flight from Chicago to Costa Mesa?
Use this chart to determine the optimal time to book a round-trip flight from Chicago to Costa Mesa. Price data was last updated on September 12, 2025.
To ensure you get the cheapest price possible for a flight from Chicago to Costa Mesa, you should look to book at least 24 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
What is the cheapest month to book a flight from Chicago to Costa Mesa?
Currently, January is the cheapest month in which you can book a flight from Chicago to Costa Mesa (average of $246). Flying from Chicago 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 CHI to CM3?
Find hourly flight availability from Chicago 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 15, 2025.
When flying from Chicago to Costa Mesa, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
What is the cheapest day to fly from Chicago to Costa Mesa?
Use this chart to determine the cheapest time to fly round-trip from Chicago to Costa Mesa. Price data was last updated on September 14, 2025.
Travelers seeking maximum savings on their Chicago to Costa Mesa flight should consider departing on Friday mornings 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 Chicago to Costa Mesa
Explore weekly flight availability from Chicago 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 15, 2025.
The most flights from CHI to CM3 are scheduled on a Monday (132 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (84 on average).
How much does it cost to fly round-trip from Chicago to Costa Mesa?
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 15, 2025.
Peruse reviews from past customers who have flown with Southwest, United Airlines, and American Airlines from Chicago to Costa Mesa to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Overall
8.0
Boarding
8.1
Comfort
8.0
Crew
8.6
Entertainment
7.5
Food
7.0
Reviews
1 / 20
8.0
ExcellentWalter,Aug 2025
OAK - SAN
Overall
8.0
Boarding
8.1
Comfort
8.0
Crew
8.6
Entertainment
7.5
Food
7.0
Reviews
1 / 20
8.0
ExcellentWalter,Aug 2025
OAK - SAN
Overall
8.0
Boarding
8.1
Comfort
8.0
Crew
8.6
Entertainment
7.5
Food
7.0
Reviews
1 / 20
8.0
ExcellentWalter,Aug 2025
OAK - SAN
Overall
8.0
Boarding
8.1
Comfort
8.0
Crew
8.6
Entertainment
7.5
Food
7.0
Reviews
1 / 20
8.0
ExcellentWalter,Aug 2025
OAK - SAN
Overall
8.0
Boarding
8.1
Comfort
8.0
Crew
8.6
Entertainment
7.5
Food
7.0
Reviews
1 / 20
8.0
ExcellentWalter,Aug 2025
OAK - SAN
Overall
8.0
Boarding
8.1
Comfort
8.0
Crew
8.6
Entertainment
7.5
Food
7.0
Reviews
1 / 20
8.0
ExcellentWalter,Aug 2025
OAK - SAN
Related info for your journey
Find useful and relevant information for your journey from Chicago 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 Chicago to Costa Mesa
See prices for flight routes from nearby airports that may be better suited for you.
Top 8 airlines flying from Chicago to Costa Mesa
Discover the top 8 airlines that operate flights from Chicago 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 15, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$78 | Average$221 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$98 | Average$207 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$144 | Average$304 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$147 | Average$326 | FlexibilityNo cancel fee | On-time83% | |
| Cheapest$152 | Average$435 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$167 | Average$430 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$189 | Average$371 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$198 | Average$406 | FlexibilityNo cancel fee | On-time69% |