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Costa Mesa

$82+ 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 12/3. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — LAX
Dec 3 — Dec 101
Wed 12/3
Wed 12/10
1 adult, Economy
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Cheapflights Tip: The best prices from Chicago to Costa Mesa are usually found in September or August, booked 24 days in advance, depart on a Thursday or Friday and return on a Thursday

Find flight deals from Chicago to Costa Mesa

Cheapest flights from Chicago to Costa Mesa
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 November 3, 2025.

This Kiwi.com deal was found by Cheapflights users on 11/3. 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.
Sun 11/166:30 amORD - LAX
Nonstop4h 26mMultiple Airlines
Wed 11/1912:19 amLAX - ORD
Nonstop4h 06mMultiple Airlines
Deal found 11/3$152
This Priceline deal was found by Cheapflights users on 11/1. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/132:31 pmORD - LAX
1 stop12h 12mMultiple Airlines
Sat 11/151:23 pmLAX - ORD
1 stop8h 06mMultiple Airlines
Deal found 11/1$153
This United Airlines deal was found by Cheapflights users on 11/2. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/128:12 pmORD - LAX
Nonstop4h 43mUnited Airlines
Fri 12/1212:25 amLAX - ORD
Nonstop3h 54mUnited Airlines
Deal found 11/2$154
This Cheapflightsfares deal was found by Cheapflights users on 11/3. 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 11/142:31 pmORD - LAX
1 stop12h 12mSpirit Airlines
Mon 11/171:20 amLAX - ORD
Nonstop4h 08mSpirit Airlines
Deal found 11/3$155
This CheapOair deal was found by Cheapflights users on 11/2. 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.
Mon 11/1010:43 pmORD - LAX
1 stop23h 10mFrontier
Sat 11/154:42 pmLAX - ORD
Nonstop4h 18mFrontier
Deal found 11/2$156
This Cheapflightsfares deal was found by Cheapflights users on 11/2. 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.
Thu 11/204:58 pmORD - LAX
1 stop6h 01mSpirit Airlines
Thu 11/275:45 amLAX - ORD
Nonstop4h 15mSpirit Airlines
Deal found 11/2$157
This Cheapflightsfares deal was found by Cheapflights users on 11/3. 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.
Thu 11/132:31 pmORD - LAX
1 stop12h 12mSpirit Airlines
Sun 11/161:20 amLAX - ORD
Nonstop4h 08mSpirit Airlines
Deal found 11/3$158
This Southwest deal was found by Cheapflights users on 11/3. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/67:50 pmMDW - LAX
Nonstop4h 30mSouthwest
Mon 12/811:00 pmLAX - MDW
Nonstop4h 00mSouthwest
Deal found 11/3$159
This United Airlines deal was found by Cheapflights users on 11/2. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/610:38 amORD - LAX
Nonstop4h 39mUnited Airlines
Sat 12/1312:25 amLAX - ORD
Nonstop3h 54mUnited Airlines
Deal found 11/2$159
This Kiwi.com deal was found by Cheapflights users on 11/3. 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 11/122:31 pmORD - LAX
1 stop12h 12mMultiple Airlines
Mon 11/174:42 pmLAX - ORD
Nonstop4h 18mMultiple Airlines
Deal found 11/3$160
This Cheapflightsfares deal was found by Cheapflights users on 11/2. 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.
Thu 12/257:44 pmORD - LAX
Nonstop4h 45mSpirit Airlines
Tue 12/3011:59 pmLAX - ORD
Nonstop4h 06mSpirit Airlines
Deal found 11/2$161
This CheapOair deal was found by Cheapflights users on 11/2. 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 12/257:44 pmORD - LAX
Nonstop4h 45mSpirit Airlines
Thu 1/111:59 pmLAX - ORD
Nonstop4h 06mSpirit Airlines
Deal found 11/2$162

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 November 3, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$153
(Priceline)

One-way from

$82
(Kiwi.com)

Popular in

December

Cheapest in

September

Average price

$290
Provider with most accurate pricing for Chicago (CHI)-Los Angeles flight deals.
Search Deals
Provider most trusted by Cheapflights users for Chicago (CHI)-Los Angeles flights.
Search Deals
From Chicago (CHI) to Costa Mesa
Search Deals
One-way flight from Chicago (CHI) to Costa Mesa
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($28 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($9 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

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 November 3, 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

ORD - LAX

ORDLAX

Chicago O'Hare Intl

Sat 12/6

6:05 pm-8:46 pm

Nonstop4h 41m

Los Angeles

Sat 12/6

12:25 am-6:19 am

Nonstop3h 54m

$154

ChicagoLos Angeles

MDW - LAX

MDWLAX

Chicago Midway

Sat 12/6

7:50 pm-10:20 pm

Nonstop4h 30m

Los Angeles

Mon 12/15

11:00 pm-5:00 am

Nonstop4h 00m

$159

ChicagoLos Angeles

MDW - LAX

MDWLAX

Chicago Midway

Sat 12/6

7:50 pm-10:20 pm

Nonstop4h 30m

Los Angeles

Sat 12/13

11:15 pm-5:15 am

Nonstop4h 00m

$159

ChicagoLos Angeles

ORD - LAX

ORDLAX

Chicago O'Hare Intl

Sat 12/6

1:00 pm-3:30 pm

Nonstop4h 30m

Los Angeles

Sun 12/14

12:25 am-6:19 am

Nonstop3h 54m

$159

ChicagoLos Angeles

MDW - LAX

MDWLAX

Chicago Midway

Sat 12/6

7:50 pm-10:20 pm

Nonstop4h 30m

Los Angeles

Sun 12/14

11:15 pm-5:15 am

Nonstop4h 00m

$159

ChicagoLos Angeles

ORD - LAX

ORDLAX

Chicago O'Hare Intl

Sat 12/6

10:38 am-1:17 pm

Nonstop4h 39m

Los Angeles

Sat 12/13

12:25 am-6:19 am

Nonstop3h 54m

$159

ChicagoLos Angeles

ORD - LAX

ORDLAX

Chicago O'Hare Intl

Wed 12/24

9:10 pm-11:59 pm

Nonstop4h 49m

Los Angeles

Thu 1/1

7:00 am-1:15 pm

Nonstop4h 15m

$159

ChicagoLos Angeles

ORD - LAX

ORDLAX

Chicago O'Hare Intl

Tue 12/2

8:12 pm-10:55 pm

Nonstop4h 43m

Los Angeles

Fri 12/5

12:25 am-6:19 am

Nonstop3h 54m

$179

ChicagoLos Angeles

ORD - LAX

ORDLAX

Chicago O'Hare Intl

Tue 12/2

8:12 pm-10:55 pm

Nonstop4h 43m

Los Angeles

Mon 12/8

12:25 am-6:19 am

Nonstop3h 54m

$179

ChicagoLos Angeles

MDW - LAX

MDWLAX

Chicago Midway

Sat 12/13

7:50 pm-10:20 pm

Nonstop4h 30m

Los Angeles

Tue 12/16

5:45 am-3:00 pm

1 stop7h 15m

$206

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/1

Showing 1-10 of 38 results
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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 October 31, 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, September is the cheapest month in which you can book a flight from Chicago to Costa Mesa (average of $80). Flying from Chicago to Costa Mesa in December is currently the most expensive (average of $145). 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 November 3, 2025.

One of the essential ways to save on airfare from Chicago to Costa Mesa is to remain as flexible as possible. Flights that are in the afternoon tend to be the most expensive. A flight in the evening could potentially save you up to 25% on airfare.

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 November 2, 2025.

Travelers seeking maximum savings on their Chicago to Costa Mesa flight should consider departing on Wednesday mornings 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.

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 November 3, 2025.

The most flights from CHI to CM3 are scheduled on a Monday (111 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (68 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 November 3, 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.
Southwest
8.0
Very good
4,238 reviews

Entertainment

7.5

Food

7.0

Comfort

8.0

Overall

8.0

Boarding

8.1

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Southwest
8.0
Very good
4,238 reviews
Southwest
8.0
Very good
4,238 reviews

Entertainment

7.5

Food

7.0

Comfort

8.0

Overall

8.0

Boarding

8.1

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
United Airlines
7.4
Good
8,997 reviews
Southwest
8.0
Very good
4,238 reviews

Entertainment

7.5

Food

7.0

Comfort

8.0

Overall

8.0

Boarding

8.1

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
American Airlines
7.2
Good
11,038 reviews
Southwest
8.0
Very good
4,238 reviews

Entertainment

7.5

Food

7.0

Comfort

8.0

Overall

8.0

Boarding

8.1

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Spirit Airlines
6.3
Okay
8,115 reviews
Southwest
8.0
Very good
4,238 reviews

Entertainment

7.5

Food

7.0

Comfort

8.0

Overall

8.0

Boarding

8.1

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Frontier
5.8
Fair
3,117 reviews
Southwest
8.0
Very good
4,238 reviews

Entertainment

7.5

Food

7.0

Comfort

8.0

Overall

8.0

Boarding

8.1

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

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.

  • How long is the flight from Chicago to Costa Mesa?

    Airlines like United Airlines and Southwest fly from Chicago to Costa Mesa in about 4h 30m. The time it takes to get you to your destination is usually consistent. The distance from Chicago to Costa Mesa is about 1746 mi. Generally, flights for this route are nonstop.

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

    The cheapest airline one-way is Southwest, with whom users have recently found tickets for as low as $90. However, be on the lookout for offers from Delta and Spirit Airlines, as they are both options that can get you from Chicago to Costa Mesa for a low price.

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

    Consider Finnair (96%), Air Canada (87%) or Air China (87%) when booking your flight. These represent the most reliable airlines when flying from Chicago to Costa Mesa.

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

    Looking at all options, your cheapest flight can be booked for $79. While the most popular route (Chicago O'Hare Intl - Los Angeles) can be booked for $73 on average, our data indicates $893 when flying from Chicago to Costa Mesa.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Chicago 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.

  • What is the cheapest month to book a flight from Chicago to Costa Mesa?

    Currently, September is the cheapest month in which you can book a flight from Chicago to Costa Mesa (average of $80). Flying from Chicago to Costa Mesa in December is currently the most expensive (average of $145). 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.

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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.
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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 November 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$78Average$222FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$99Average$206FlexibilityNo cancel feeOn-time65%
DeltaCheapest$144Average$317FlexibilityNo cancel feeOn-timeN/A
Sun Country AirCheapest$147Average$326FlexibilityNo cancel feeOn-time83%
Alaska AirlinesCheapest$167Average$422FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$180Average$437FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$181Average$398FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$189Average$365FlexibilityNo cancel feeOn-time71%

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