$76+ 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 6/6. Fares are subject to change and may not be available on all flights or dates of travel.
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 September or October, booked 54 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 May 1, 2025.
Most accurate provider | Mytrip 3 stars |
|---|---|
Most trusted provider | Mytrip 3 stars |
Round-trip from | $141 (Cheapflightsfares) |
One-way from | $76 (Trip.com) |
Popular in | December |
Cheapest in | September |
Average price | $261 |
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 May 1, 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 May 1, 2025.
This Cheapflightsfares deal was found by Cheapflights users on 5/1. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Kiwi.com deal was found by Cheapflights users on 4/30. 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.
This Frontier deal was found by Cheapflights users on 4/30. 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.
This Frontier deal was found by Cheapflights users on 4/30. 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.
This United Airlines deal was found by Cheapflights users on 4/30. 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.
This Southwest deal was found by Cheapflights users on 4/30. 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.
This American Airlines deal was found by Cheapflights users on 5/1. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Alaska Airlines deal was found by Cheapflights users on 4/30. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Delta deal was found by Cheapflights users on 4/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Delta deal was found by Cheapflights users on 5/1. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight 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 May 1, 2025.
Use the filters below to find and compare flights from Chicago to Costa Mesa that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
ChicagoLos Angeles
ORD - LAX
ORDLAX
Chicago O'Hare Intl
Wed 5/21
9:02 pm-9:35 am
1 stop14h 33m
Los Angeles
Fri 5/23
12:41 am-6:42 am
Nonstop4h 01m
ChicagoLos Angeles
ORD - LAX
ORDLAX
Chicago O'Hare Intl
Tue 6/3
9:02 pm-9:56 am
1 stop14h 54m
Los Angeles
Sat 6/7
4:36 pm-10:55 pm
Nonstop4h 19m
ChicagoLos Angeles
ORD - LAX
ORDLAX
Chicago O'Hare Intl
Sat 6/7
6:10 am-8:43 am
Nonstop4h 33m
Los Angeles
Mon 6/9
4:36 pm-10:55 pm
Nonstop4h 19m
ChicagoLos Angeles
MDW - LAX
MDWLAX
Chicago Midway
Wed 5/14
2:12 pm-9:35 pm
1 stop9h 23m
Los Angeles
Mon 5/19
10:35 pm-9:20 am
1 stop8h 45m
ChicagoLos Angeles
ORD - LAX
ORDLAX
Chicago O'Hare Intl
Wed 5/21
6:05 am-8:42 am
Nonstop4h 37m
Los Angeles
Wed 5/21
2:14 pm-8:25 pm
Nonstop4h 11m
ChicagoLos Angeles
MDW - LAX
MDWLAX
Chicago Midway
Sat 6/7
9:45 pm-12:10 am
Nonstop4h 25m
Los Angeles
Sat 6/21
10:55 pm-5:00 am
Nonstop4h 05m
ChicagoLos Angeles
ORD - LAX
ORDLAX
Chicago O'Hare Intl
Tue 7/29
6:45 pm-9:17 pm
Nonstop4h 32m
Los Angeles
Tue 8/5
5:31 pm-11:43 pm
Nonstop4h 12m
ChicagoLos Angeles
ORD - LAX
ORDLAX
Chicago O'Hare Intl
Tue 6/3
6:00 am-12:58 pm
1 stop8h 58m
Los Angeles
Tue 6/10
1:58 pm-11:59 pm
1 stop8h 01m
ChicagoLos Angeles
MDW - LAX
MDWLAX
Chicago Midway
Sat 6/14
9:21 am-2:55 pm
1 stop7h 34m
Los Angeles
Sat 6/21
11:30 pm-8:44 am
1 stop7h 14m
ChicagoLos Angeles
ORD - LAX
ORDLAX
Chicago O'Hare Intl
Tue 6/3
6:24 am-12:58 pm
1 stop8h 34m
Los Angeles
Tue 6/3
12:59 am-9:51 am
1 stop6h 52m
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.
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 April 25, 2025.
To ensure you get the cheapest price possible for a flight from Chicago to Costa Mesa, you should look to book at least 54 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 $327). 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 May 1, 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 March 30, 2025.
Travelers seeking maximum savings on their Chicago to Costa Mesa flight should consider departing on Wednesday 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 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 May 1, 2025.
The most flights from CHI to CM3 are scheduled on a Thursday (119 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (46 on average).
Rainfall in Costa Mesa by month
Plan your trip to Costa Mesa by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in Costa Mesa ranges from 0.0 - 3.4 inches per month. February is typically the wettest month, when rainfall can reach 3.4 in. July is typically the driest time to visit Costa Mesa when rainfall is around 0.0 in.
Temperature in Costa Mesa by month
Plan your trip to Costa Mesa by taking into account the average temperature totals by month.
If weather is an important factor for your trip to Costa Mesa, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 57.2 F).
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 May 1, 2025.
See what other customers who have flown with Alaska Airlines, Southwest and Delta from Chicago to Costa Mesa have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
Overall
Food
Boarding
Entertainment
Comfort
Reviews
James,Apr 2025
LAX - SFO
Crew
Overall
Food
Boarding
Entertainment
Comfort
Reviews
James,Apr 2025
LAX - SFO
Crew
Overall
Food
Boarding
Entertainment
Comfort
Reviews
James,Apr 2025
LAX - SFO
Crew
Overall
Food
Boarding
Entertainment
Comfort
Reviews
James,Apr 2025
LAX - SFO
Crew
Overall
Food
Boarding
Entertainment
Comfort
Reviews
James,Apr 2025
LAX - SFO
Crew
Overall
Food
Boarding
Entertainment
Comfort
Reviews
James,Apr 2025
LAX - SFO
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 9 airlines flying from Chicago to Costa Mesa
Discover the top 9 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 May 1, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$49 | Average$130 | FlexibilityNo cancel fee | On-time88% | |
| Cheapest$78 | Average$214 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$88 | Average$246 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$137 | Average$373 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$147 | Average$345 | FlexibilityNo cancel fee | On-time83% | |
| Cheapest$179 | Average$365 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$204 | Average$446 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$206 | Average$486 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$222 | Average$436 | FlexibilityNo cancel fee | On-timeN/A |