HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Chicago

$84+ Cheap flights from Irvine, CA to Chicago (CHI)

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 1/10. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — CHI
Dec 5 — Dec 121
Fri 12/5
Fri 12/12
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Irvine to Chicago 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 Irvine to Chicago are usually found in September or February, booked 56 days in advance, depart on a Thursday or Wednesday and return on a Thursday

Find flight deals from Irvine to Chicago

Cheapest flights from Irvine to Chicago
Explore the most affordable flight options available from Irvine to Chicago. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 5, 2025.

This Super.com deal was found by Cheapflights users on 11/5. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/154:42 pmLAX - ORD
Nonstop4h 18mFrontier
Thu 12/46:50 amORD - LAX
Nonstop4h 39mFrontier
Deal found 11/5$158
This Southwest deal was found by Cheapflights users on 11/5. 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 12/65:35 amLAX - MDW
Nonstop4h 05mSouthwest
Sun 12/149:45 pmMDW - LAX
Nonstop4h 25mSouthwest
Deal found 11/5$159
This United Airlines deal was found by Cheapflights users on 11/4. 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.
Mon 12/812:25 amLAX - ORD
Nonstop3h 54mUnited Airlines
Thu 12/112:35 pmORD - LAX
Nonstop4h 39mUnited Airlines
Deal found 11/4$159
This Orbitz deal was found by Cheapflights users on 11/4. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1912:19 amLAX - ORD
Nonstop4h 06mSpirit Airlines
Mon 11/248:18 pmORD - LAX
Nonstop4h 39mSpirit Airlines
Deal found 11/4$160
This Cheapflightsfares deal was found by Cheapflights users on 11/5. 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 12/1811:59 pmLAX - ORD
Nonstop4h 06mSpirit Airlines
Thu 12/257:44 pmORD - LAX
Nonstop4h 45mSpirit Airlines
Deal found 11/5$161
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 11/121:20 amLAX - ORD
Nonstop4h 08mSpirit Airlines
Fri 12/59:06 pmORD - LAX
Nonstop4h 46mSpirit Airlines
Deal found 11/3$162
This Booking.com deal was found by Cheapflights users on 11/5. 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 11/201:43 pmLAX - MDW
1 stop24h 03mFrontier
Mon 11/245:47 pmMDW - LAX
1 stop26h 36mFrontier
Deal found 11/5$163
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/134:42 pmLAX - ORD
Nonstop4h 18mFrontier
Thu 11/208:59 amORD - LAX
1 stop8h 13mFrontier
Deal found 11/3$163
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.
Fri 11/144:42 pmLAX - ORD
Nonstop4h 18mMultiple Airlines
Mon 12/14:58 pmORD - LAX
1 stop6h 01mMultiple Airlines
Deal found 11/3$164
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.
Tue 11/117:00 amLAX - ORD
1 stop6h 39mMultiple Airlines
Tue 12/28:18 pmORD - LAX
Nonstop4h 39mMultiple Airlines
Deal found 11/3$165
This Kiwi.com deal was found by Cheapflights users on 11/4. 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 12/39:54 pmLAX - ORD
2 stops15h 53mMultiple Airlines
Sat 12/139:06 pmORD - LAX
Nonstop4h 46mMultiple Airlines
Deal found 11/4$166
This Cheapflightsfares deal was found by Cheapflights users on 11/4. 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 12/1811:59 pmLAX - ORD
Nonstop4h 06mSpirit Airlines
Wed 12/247:44 pmORD - LAX
Nonstop4h 45mSpirit Airlines
Deal found 11/4$167

Cheap flight deals from Irvine to Chicago

Keep the following information in mind while searching for Irvine to Chicago flight deals. Data was last updated November 5, 2025.

Most accurate provider

Justfly.com
3 stars

Most trusted provider

Justfly.com
3 stars

Round-trip from

$159
(Southwest)

One-way from

$84
(Kiwi.com)

Popular in

December

Cheapest in

September

Average price

$323
Provider with most accurate pricing for Los Angeles-Chicago (CHI) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Los Angeles-Chicago (CHI) flights.
Search Deals
From Irvine to Chicago (CHI)
Search Deals
One-way flight from Irvine to Chicago (CHI)
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. 1% potential price decrease ($4 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 Irvine to Chicago 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 5, 2025.
Use the filters below to find and compare flights from Irvine to Chicago that are best for you.

Fly from

Irvine

Fly to

Chicago

Route

Depart

Return

Price

Los AngelesChicago

LAX - MDW

LAXMDW

Los Angeles

Sat 12/6

11:15 pm-5:15 am

Nonstop4h 00m

Chicago Midway

Mon 12/8

8:55 pm-11:25 pm

Nonstop4h 30m

$159

Los AngelesChicago

LAX - MDW

LAXMDW

Los Angeles

Tue 12/2

6:00 am-12:05 pm

Nonstop4h 05m

Chicago Midway

Fri 12/5

8:55 pm-11:25 pm

Nonstop4h 30m

$189

Los AngelesChicago

LAX - MDW

LAXMDW

Los Angeles

Thu 12/11

6:00 am-12:05 pm

Nonstop4h 05m

Chicago Midway

Sun 12/14

6:05 pm-10:50 pm

1 stop6h 45m

$206

Los AngelesChicago

LAX - MDW

LAXMDW

Los Angeles

Thu 12/4

9:00 pm-5:05 am

1 stop6h 05m

Chicago Midway

Sun 12/7

6:05 am-8:35 am

Nonstop4h 30m

$216

Los AngelesChicago

LAX - MDW

LAXMDW

Los Angeles

Fri 12/12

11:40 pm-9:19 am

1 stop7h 39m

Chicago Midway

Sat 12/13

1:50 pm-8:38 pm

1 stop8h 48m

$217

Los AngelesChicago

LAX - MDW

LAXMDW

Los Angeles

Sat 12/13

2:17 pm-11:47 pm

1 stop7h 30m

Chicago Midway

Sun 12/14

9:59 am-2:59 pm

1 stop7h 00m

$217

Los AngelesChicago

LAX - ORD

LAXORD

Los Angeles

Mon 12/8

10:01 am-8:35 pm

1 stop8h 34m

Chicago O'Hare Intl

Wed 12/17

7:20 am-12:29 pm

1 stop7h 09m

$217

Los AngelesChicago

LAX - ORD

LAXORD

Los Angeles

Fri 12/5

1:25 pm-9:40 pm

1 stop6h 15m

Chicago O'Hare Intl

Wed 12/10

1:35 pm-6:15 pm

1 stop6h 40m

$217

Los AngelesChicago

LAX - MDW

LAXMDW

Los Angeles

Mon 12/1

7:15 pm-1:05 am

Nonstop3h 50m

Chicago Midway

Fri 12/5

8:55 pm-11:25 pm

Nonstop4h 30m

$224

Los AngelesChicago

LAX - RFD

LAXRFD

Los Angeles

Thu 12/4

1:42 pm-9:48 am

2 stops18h 06m

Chicago Greater Rockford

Mon 12/8

6:56 pm-10:39 am

1 stop17h 43m

$240

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/4

Showing 1-10 of 60 results
1
2
3
...
6

Best time to book a flight from Irvine to Chicago

Have a flexible travel schedule? Discover the best time to fly to Chicago from Irvine 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 Irvine to Chicago

How far ahead should I book a flight from Irvine to Chicago?

Use this chart to determine the optimal time to book a round-trip flight from Irvine to Chicago. Price data was last updated on October 31, 2025.

To ensure you get the cheapest price possible for a flight from Irvine to Chicago, you should look to book at least 56 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 Irvine to Chicago?

Currently, March is the cheapest month in which you can book a flight from Irvine to Chicago (average of $77). Flying from Irvine to Chicago in July is currently the most expensive (average of $138). 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 IR9 to CHI?

Find hourly flight availability from Irvine to Chicago. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 5, 2025.

Unlike at noon, when flights are generally more expensive, you can save up to 27% on flights from Irvine to Chicago by exploring options for tickets in the evening.

What is the cheapest day to fly from Irvine to Chicago?

Use this chart to determine the cheapest time to fly round-trip from Irvine to Chicago. Price data was last updated on November 2, 2025.

Travelers seeking maximum savings on their Irvine to Chicago flight should consider departing on Wednesday mornings when fares are most often at their lowest. Monday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Irvine to Chicago

Explore weekly flight availability from Irvine to Chicago. 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 5, 2025.

The most flights from IR9 to CHI are scheduled on a Monday (105 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (59 on average).

Reviews of airlines servicing Chicago

Get insights into the airlines that provide service to Chicago. 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 Chicago. Reviews last updated November 5, 2025.
See what other customers who have flown with Southwest, United Airlines, and American Airlines from Irvine to Chicago have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,240 reviews

Boarding

8.1

Entertainment

7.5

Crew

8.6

Comfort

8.0

Food

7.0

Overall

8.0

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
4,240 reviews
Southwest
8.0
Very good
4,240 reviews

Boarding

8.1

Entertainment

7.5

Crew

8.6

Comfort

8.0

Food

7.0

Overall

8.0

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
9,002 reviews
Southwest
8.0
Very good
4,240 reviews

Boarding

8.1

Entertainment

7.5

Crew

8.6

Comfort

8.0

Food

7.0

Overall

8.0

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
11,042 reviews
Southwest
8.0
Very good
4,240 reviews

Boarding

8.1

Entertainment

7.5

Crew

8.6

Comfort

8.0

Food

7.0

Overall

8.0

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
4,240 reviews

Boarding

8.1

Entertainment

7.5

Crew

8.6

Comfort

8.0

Food

7.0

Overall

8.0

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
3,116 reviews
Southwest
8.0
Very good
4,240 reviews

Boarding

8.1

Entertainment

7.5

Crew

8.6

Comfort

8.0

Food

7.0

Overall

8.0

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 Irvine to Chicago. 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 Irvine to Chicago?

    Departing from Irvine to Chicago will take you 3h 54m. Irvine and Chicago are separated by a distance of 1740 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    The cheapest airlines for a one-way flight from Irvine to Chicago are Frontier ($90), Southwest ($95), and Delta ($109).

  • What are the most popular routes from Irvine to Chicago?

    Most travelers choose Los Angeles - Chicago O'Hare Intl, Los Angeles - Chicago Midway or Los Angeles - Chicago Greater Rockford when deciding on the best route from Irvine to Chicago.

  • What are the most reliable airlines from Irvine to Chicago?

    Before booking your flight to Chicago from Irvine, check out the most reliable airlines to get you to your destination on time: ITA Airways (100%), Air China (93%), United Airlines( 91%).

  • What are the cheapest flights from Irvine to Chicago?

    The cheapest flight price from Irvine to Chicago is $73. On average you can expect to pay $869. The most popular route, (Los Angeles - Chicago O'Hare Intl), can usually be booked for $73.

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

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

  • How can I find direct flights from Irvine to Chicago?

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

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

    Yes. Cheapflights offers flight deals from Irvine to Chicago 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 Irvine to Chicago?

    Currently, March is the cheapest month in which you can book a flight from Irvine to Chicago (average of $77). Flying from Irvine to Chicago in July is currently the most expensive (average of $138). 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.

See more FAQs

Traveling to a place near Chicago?

Book flights to Chicago if you plan to visit one of these locations
Lansing
Hammond
Porter
Benton Harbor
Merrillville

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Irvine to Chicago

See prices for flight routes from nearby airports that may be better suited for you.
San Francisco to O'Hare Intl flights
Los Angeles to O'Hare Intl flights
Ontario to O'Hare Intl flights
Santa Ana to O'Hare Intl flights
San Francisco to Midway flights
San Diego to O'Hare Intl flights
Los Angeles to Midway flights
San Jose to O'Hare Intl flights
Las Vegas to O'Hare Intl flights
Sacramento to O'Hare Intl flights
Burbank to O'Hare Intl flights
Oakland to O'Hare Intl flights
Los Angeles to St. Louis flights
San Francisco to St. Louis flights
Ontario to Midway flights
Santa Ana to Midway flights
San Diego to Midway flights
Oakland to Midway flights
Reno to O'Hare Intl flights
Ontario to St. Louis flights
San Diego to St. Louis flights
Sacramento to Midway flights
Las Vegas to Midway flights
Palm Springs to O'Hare Intl flights
Burbank to Midway flights
Las Vegas to St. Louis flights
San Jose to Midway flights
Fresno to O'Hare Intl flights
Long Beach to O'Hare Intl flights
Santa Ana to St. Louis flights
San Jose to St. Louis flights
Burbank to St. Louis flights
San Luis Obispo to O'Hare Intl flights
Reno to Midway flights
Fresno to Midway flights
Monterey to O'Hare Intl flights
Los Angeles to Peoria flights
Sacramento to St. Louis flights
Oakland to St. Louis flights
San Francisco to Moline flights
Ontario to Peoria flights
Los Angeles to Rockford flights
Santa Ana to Peoria flights
Long Beach to St. Louis flights
Santa Rosa to O'Hare Intl flights
San Francisco to Rockford flights
Long Beach to Midway flights
Los Angeles to Moline flights
Santa Barbara to O'Hare Intl flights
Palm Springs to Midway flights

Top 8 airlines flying from Irvine to Chicago

Discover the top 8 airlines that operate flights from Irvine to Chicago. 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 5, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$77Average$202FlexibilityNo cancel feeOn-time65%
FrontierCheapest$89Average$223FlexibilityNo cancel feeOn-time62%
Sun Country AirCheapest$130Average$330FlexibilityNo cancel feeOn-time83%
SouthwestCheapest$179Average$417FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$182Average$403FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$190Average$442FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$200Average$396FlexibilityNo cancel feeOn-time71%
DeltaCheapest$218Average$379FlexibilityNo cancel feeOn-timeN/A

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.