HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Chicago

$81+ 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 10/3. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — CHI
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
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 February or August, booked 56 days in advance, depart on a Wednesday or Thursday and return on a Friday

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 September 17, 2025.

Round-trip from

$144
(Frontier)

One-way from

$81
(Cheapflightsfares)

Popular in

December

Cheapest in

February

Average price

$279
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 ($5 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
Search Deals

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 September 17, 2025.

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.
Fri 10/172:15 pmLAX - ORD
1 stop8h 29mFrontier
Sat 10/187:25 amORD - LAX
Nonstop4h 26mFrontier
Deal found 9/16$144
This Booking.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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/44:51 pmLAX - ORD
Nonstop4h 22mFrontier
Sat 10/117:05 amORD - LAX
1 stop19h 20mFrontier
Deal found 9/17$145
This Kiwi.com deal was found by Cheapflights users on 9/15. 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 10/89:22 amLAX - ORD
1 stop9h 26mMultiple Airlines
Sat 10/117:05 amORD - LAX
1 stop19h 20mMultiple Airlines
Deal found 9/15$146
This Priceline 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/62:03 pmLAX - ORD
1 stop7h 56mFrontier
Thu 10/97:25 amORD - LAX
Nonstop4h 26mFrontier
Deal found 9/17$147
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.
Fri 10/34:21 pmLAX - ORD
Nonstop4h 22mFrontier
Sat 10/48:25 amORD - LAX
1 stop11h 05mFrontier
Deal found 9/16$148
This Priceline 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/34:21 pmLAX - ORD
Nonstop4h 22mFrontier
Tue 10/77:15 amORD - LAX
1 stop7h 04mFrontier
Deal found 9/17$149
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 10/312:05 pmLAX - ORD
Nonstop4h 09mSpirit Airlines
Sat 10/47:09 pmORD - LAX
Nonstop4h 31mSpirit Airlines
Deal found 9/16$150
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.
Mon 10/64:21 pmLAX - ORD
Nonstop4h 22mFrontier
Tue 10/77:15 amORD - LAX
1 stop7h 04mFrontier
Deal found 9/16$151
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/175:41 pmLAX - ORD
Nonstop4h 18mFrontier
Fri 10/247:25 amORD - LAX
Nonstop4h 26mFrontier
Deal found 9/17$152
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/17:20 amLAX - ORD
1 stop12h 08mFrontier
Thu 10/26:30 amORD - LAX
Nonstop4h 29mFrontier
Deal found 9/17$153
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/34:21 pmLAX - ORD
Nonstop4h 22mFrontier
Mon 10/139:54 pmORD - LAX
1 stop23h 59mFrontier
Deal found 9/17$154
This CheapOair deal was found by Cheapflights users on 9/15. 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 10/236:44 amLAX - MDW
1 stop15h 52mFrontier
Mon 10/2712:11 pmMDW - LAX
1 stop14h 14mFrontier
Deal found 9/15$157

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 September 17, 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

Tue 10/21

11:00 pm-5:00 am

Nonstop4h 00m

Chicago Midway

Sat 10/25

4:30 pm-6:55 pm

Nonstop4h 25m

$197

Los AngelesChicago

LAX - ORD

LAXORD

Los Angeles

Wed 10/29

6:00 am-12:10 pm

Nonstop4h 10m

Chicago O'Hare Intl

Sat 11/1

8:48 am-11:30 am

Nonstop4h 42m

$197

Los AngelesChicago

LAX - MDW

LAXMDW

Los Angeles

Wed 10/15

4:00 pm-10:00 pm

Nonstop4h 00m

Chicago Midway

Tue 10/21

9:25 pm-11:55 pm

Nonstop4h 30m

$208

Los AngelesChicago

LAX - ORD

LAXORD

Los Angeles

Thu 10/23

7:00 am-1:20 pm

Nonstop4h 20m

Chicago O'Hare Intl

Tue 10/28

10:42 am-1:21 pm

Nonstop4h 39m

$215

Los AngelesChicago

LAX - MDW

LAXMDW

Los Angeles

Mon 10/20

11:00 pm-5:00 am

Nonstop4h 00m

Chicago Midway

Tue 10/21

9:25 pm-11:55 pm

Nonstop4h 30m

$215

Los AngelesChicago

LAX - ORD

LAXORD

Los Angeles

Fri 10/17

1:20 pm-7:35 pm

Nonstop4h 15m

Chicago O'Hare Intl

Wed 10/22

6:26 pm-9:01 pm

Nonstop4h 35m

$215

Los AngelesChicago

LAX - MDW

LAXMDW

Los Angeles

Fri 10/17

11:00 pm-5:00 am

Nonstop4h 00m

Chicago Midway

Wed 10/22

12:30 pm-2:55 pm

Nonstop4h 25m

$215

Los AngelesChicago

LAX - MDW

LAXMDW

Los Angeles

Mon 12/15

11:00 pm-5:00 am

Nonstop4h 00m

Chicago Midway

Tue 12/16

8:10 am-10:45 am

Nonstop4h 35m

$216

Los AngelesChicago

LAX - MDW

LAXMDW

Los Angeles

Fri 10/17

12:35 pm-8:35 pm

1 stop6h 00m

Chicago Midway

Tue 10/21

9:25 pm-11:55 pm

Nonstop4h 30m

$225

Los AngelesChicago

LAX - MDW

LAXMDW

Los Angeles

Wed 10/15

12:45 pm-6:40 pm

Nonstop3h 55m

Chicago Midway

Fri 10/24

9:25 pm-11:55 pm

Nonstop4h 30m

$226

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Showing 1-10 of 57 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 September 12, 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, August is the cheapest month in which you can book a flight from Irvine to Chicago (average of $245). Flying from Irvine to Chicago in March is currently the most expensive (average of $321). 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 September 17, 2025.

When flying from Irvine to Chicago, 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 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 September 14, 2025.

Travelers seeking maximum savings on their Irvine to Chicago flight should consider departing on Friday afternoons when fares are most often at their lowest. Sunday at noon 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 September 17, 2025.

The most flights from IR9 to CHI are scheduled on a Monday (124 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (102 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 September 17, 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
4,242 reviews

Crew

8.6

Food

7.0

Boarding

8.1

Comfort

8.0

Entertainment

7.5

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
4,242 reviews
Southwest
8.0
Very good
4,242 reviews

Crew

8.6

Food

7.0

Boarding

8.1

Comfort

8.0

Entertainment

7.5

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
8,926 reviews
Southwest
8.0
Very good
4,242 reviews

Crew

8.6

Food

7.0

Boarding

8.1

Comfort

8.0

Entertainment

7.5

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
10,000 reviews
Southwest
8.0
Very good
4,242 reviews

Crew

8.6

Food

7.0

Boarding

8.1

Comfort

8.0

Entertainment

7.5

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
8,023 reviews
Southwest
8.0
Very good
4,242 reviews

Crew

8.6

Food

7.0

Boarding

8.1

Comfort

8.0

Entertainment

7.5

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
3,173 reviews
Southwest
8.0
Very good
4,242 reviews

Crew

8.6

Food

7.0

Boarding

8.1

Comfort

8.0

Entertainment

7.5

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 4h. Irvine and Chicago are separated by a distance of 1746 mi. Most flights are nonstop.

  • 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 Spirit Airlines ($96), Southwest ($99), and United Airlines ($99).

  • 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 (85%), United Airlines( 84%).

  • What are the cheapest flights from Irvine to Chicago?

    The cheapest flight price from Irvine to Chicago is $70. On average you can expect to pay $820. The most popular route, (Los Angeles - Chicago O'Hare Intl), can usually be booked for $114.

  • 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, August is the cheapest month in which you can book a flight from Irvine to Chicago (average of $245). Flying from Irvine to Chicago in March is currently the most expensive (average of $321). 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
Merrillville
Lansing
Hammond
Benton Harbor
Porter
Chesterton

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.
Los Angeles to O'Hare Intl flights
San Francisco to O'Hare Intl flights
Ontario to O'Hare Intl flights
Santa Ana to O'Hare Intl flights
Los Angeles to Midway flights
San Francisco to Midway flights
Burbank to O'Hare Intl flights
San Jose to O'Hare Intl flights
San Diego to O'Hare Intl flights
Oakland to O'Hare Intl flights
Las Vegas to O'Hare Intl flights
Sacramento to O'Hare Intl flights
Los Angeles to St. Louis flights
Ontario to Midway flights
San Francisco to St. Louis flights
Santa Ana to Midway flights
San Jose to Midway flights
San Diego to Midway flights
Long Beach to O'Hare Intl flights
Oakland to Midway flights
Burbank to Midway flights
Las Vegas to Midway flights
Sacramento to Midway flights
Reno to O'Hare Intl flights
Palm Springs to O'Hare Intl flights
Fresno to O'Hare Intl flights
Ontario to St. Louis flights
Las Vegas to St. Louis flights
Burbank to St. Louis flights
San Diego to St. Louis flights
Long Beach to Midway flights
Reno to Midway flights
Santa Ana to St. Louis flights
San Jose to St. Louis flights
Sacramento to St. Louis flights
Long Beach to St. Louis flights
Reno to St. Louis flights
Fresno to St. Louis flights
Santa Barbara to O'Hare Intl flights
Fresno to Midway flights
Los Angeles to Peoria flights
San Francisco to Moline flights
San Luis Obispo to O'Hare Intl flights
Los Angeles to Moline flights
Ontario to Peoria flights
Monterey to O'Hare Intl flights
Los Angeles to Rockford flights
Palm Springs to Midway flights
Santa Ana to Bloomington flights
Santa Ana to Moline 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 September 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$91Average$232FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$97Average$203FlexibilityNo cancel feeOn-time65%
Sun Country AirCheapest$130Average$330FlexibilityNo cancel feeOn-time83%
United AirlinesCheapest$149Average$390FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$157Average$422FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$190Average$431FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$192Average$403FlexibilityNo cancel feeOn-time71%
DeltaCheapest$218Average$395FlexibilityNo 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.