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O'Hare Intl

$81+ Cheap flights from Irvine, CA to O'Hare Intl (ORD)

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 — ORD
oct. 17 — oct. 241
vie. 10/17
vie. 10/24
1 adult, Economy
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Cheapflights Tip: The best prices from Irvine to Chicago O'Hare Intl are usually found in February or August, booked 30 days in advance, depart on a Wednesday or Thursday and return on a Friday

Cheap flight deals from Irvine to O'Hare Intl

Keep the following information in mind while searching for Irvine to O'Hare Intl flight deals. Data was last updated septiembre 17, 2025.

Round-trip from

$144
(Frontier)

One-way from

$81
(Cheapflightsfares)

Popular in

December

Cheapest in

February

Average price

$287
From Irvine to Chicago O'Hare Intl
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One-way flight from Irvine to Chicago O'Hare Intl
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Highest demand for flights based on searches. 10% potential increase in price ($33 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Irvine to O'Hare Intl

Cheapest flights from Irvine to O'Hare Intl
Explore the most affordable flight options available from Irvine to O'Hare Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on septiembre 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.
vie. 10/172:15 pmLAX - ORD
1 stop8h 29mFrontier
sáb. 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.
sáb. 10/44:51 pmLAX - ORD
Nonstop4h 22mFrontier
sáb. 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.
mié. 10/89:22 amLAX - ORD
1 stop9h 26mMultiple Airlines
sáb. 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.
lun. 10/62:03 pmLAX - ORD
1 stop7h 56mFrontier
jue. 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.
vie. 10/34:21 pmLAX - ORD
Nonstop4h 22mFrontier
sáb. 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.
vie. 10/34:21 pmLAX - ORD
Nonstop4h 22mFrontier
mar. 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.
vie. 10/312:05 pmLAX - ORD
Nonstop4h 09mSpirit Airlines
sáb. 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.
lun. 10/64:21 pmLAX - ORD
Nonstop4h 22mFrontier
mar. 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.
vie. 10/175:41 pmLAX - ORD
Nonstop4h 18mFrontier
vie. 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.
mié. 10/17:20 amLAX - ORD
1 stop12h 08mFrontier
jue. 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.
vie. 10/34:21 pmLAX - ORD
Nonstop4h 22mFrontier
lun. 10/139:54 pmORD - LAX
1 stop23h 59mFrontier
Deal found 9/17$154

Cheapflights Fare Finder

 
Customize your flight search to find flights from Irvine to O'Hare Intl 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 septiembre 17, 2025.
Use the filters below to find and compare flights from Irvine to Chicago O'Hare Intl Airport that are best for you.

Fly from

Irvine

Fly to

O'Hare Intl

Route

Depart

Return

Price

Los AngelesChicago

LAX - ORD

LAXORD

Los Angeles

mié. 10/29

6:00 am-12:10 pm

Nonstop4h 10m

Chicago O'Hare Intl

sáb. 11/1

8:48 am-11:30 am

Nonstop4h 42m

$197

Los AngelesChicago

LAX - ORD

LAXORD

Los Angeles

jue. 10/23

7:00 am-1:20 pm

Nonstop4h 20m

Chicago O'Hare Intl

mar. 10/28

10:42 am-1:21 pm

Nonstop4h 39m

$215

Los AngelesChicago

LAX - ORD

LAXORD

Los Angeles

vie. 10/17

1:20 pm-7:35 pm

Nonstop4h 15m

Chicago O'Hare Intl

mié. 10/22

6:26 pm-9:01 pm

Nonstop4h 35m

$215

Los AngelesChicago

LAX - ORD

LAXORD

Los Angeles

dom. 10/26

11:20 pm-5:16 am

Nonstop3h 56m

Chicago O'Hare Intl

jue. 10/30

9:18 pm-11:59 pm

Nonstop4h 41m

$233

Los AngelesChicago

LAX - ORD

LAXORD

Los Angeles

jue. 11/13

12:25 am-6:29 am

Nonstop4h 04m

Chicago O'Hare Intl

dom. 11/16

8:14 pm-10:57 pm

Nonstop4h 43m

$233

Los AngelesChicago

LAX - ORD

LAXORD

Los Angeles

mié. 10/29

6:18 pm-5:01 am

1 stop8h 43m

Chicago O'Hare Intl

jue. 10/30

2:05 pm-8:37 pm

1 stop8h 32m

$234

Los AngelesChicago

LAX - ORD

LAXORD

Los Angeles

mié. 10/29

11:45 am-9:40 pm

1 stop7h 55m

Chicago O'Hare Intl

vie. 10/31

7:00 am-3:00 pm

1 stop10h 00m

$234

Los AngelesChicago

LAX - ORD

LAXORD

Los Angeles

mar. 10/21

7:00 am-5:03 pm

1 stop8h 03m

Chicago O'Hare Intl

mar. 10/28

2:05 pm-8:37 pm

1 stop8h 32m

$244

Los AngelesChicago

LAX - ORD

LAXORD

Los Angeles

mié. 10/22

9:00 am-5:01 am

1 stop18h 01m

Chicago O'Hare Intl

sáb. 10/25

10:00 am-7:13 pm

2 stops11h 13m

$278

Los AngelesChicago

LAX - ORD

LAXORD

Los Angeles

sáb. 10/4

5:30 am-4:45 pm

2 stops9h 15m

Chicago O'Hare Intl

sáb. 10/11

1:30 pm-11:25 pm

1 stop11h 55m

$284

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/16

Showing 1-10 of 22 results
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Best time to book a flight from Irvine to O'Hare Intl

Have a flexible travel schedule? Discover the best time to fly to O'Hare Intl 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 O'Hare Intl Airport

How far ahead should I book a flight from Irvine to Chicago O'Hare Intl Airport?

Use this chart to determine the optimal time to book a round-trip flight from Irvine to O'Hare Intl. Price data was last updated on September 12, 2025.

The best time to book flights from Irvine to Chicago O'Hare Intl Airport is 30 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Irvine to Chicago O'Hare Intl Airport?

Currently, August is the cheapest month in which you can book a flight from Irvine to Chicago O'Hare Intl Airport (average of $245). Flying from Irvine to Chicago O'Hare Intl Airport 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 ORD?

Find hourly flight availability from Irvine to O'Hare Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated septiembre 17, 2025.

When flying from Irvine to Chicago O'Hare Intl Airport, 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 O'Hare Intl Airport?

Use this chart to determine the cheapest time to fly round-trip from Irvine to O'Hare Intl. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Irvine to Chicago O'Hare Intl Airport 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 O'Hare Intl Airport

Explore weekly flight availability from Irvine to O'Hare Intl. 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 septiembre 17, 2025.

The most flights from IR9 to ORD are scheduled on a Monday (120 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (100 on average).

Reviews of airlines servicing O'Hare Intl

Get insights into the airlines that provide service to O'Hare Intl. 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 O'Hare Intl. Reviews last updated septiembre 17, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines, United Airlines, and American Airlines from Irvine to Chicago O'Hare Intl Airport 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.
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Food

7.1

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Food

7.1

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
United Airlines
7.4
Good
8,926 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Food

7.1

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Food

7.1

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Spirit Airlines
6.3
Okay
8,023 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Food

7.1

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Frontier
5.8
Fair
3,173 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Food

7.1

Boarding

8.1

Comfort

7.8

Entertainment

7.1

Overall

8.0

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.

Related info for your journey

Find useful and relevant information for your journey from Irvine to O'Hare Intl. 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 O'Hare Intl Airport?

    There are many flights that can get you from Irvine to Chicago O'Hare Intl Airport in 4h 10m. Fly via United Airlines to get the fastest option. Irvine and Chicago O'Hare Intl Airport are separated by a distance of 1740 mi. Generally, flights for this route are nonstop.

  • What are the cheapest airlines to fly from Irvine to Chicago O'Hare Intl Airport one-way?

    One-way options have recently been found by users for as low as $96 on Spirit Airlines. Other airlines that offer cheap prices include United Airlines from $99 and Alaska Airlines from $108 one-way.

  • What are the most reliable airlines from Irvine to Chicago O'Hare Intl Airport?

    Before booking your flight to Chicago O'Hare Intl Airport 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 O'Hare Intl Airport?

    The cheapest flight price from Irvine to Chicago O'Hare Intl Airport 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 O'Hare Intl that include hotel bookings?

    Yes. In addition to deals on Irvine to O'Hare Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Irvine to O'Hare Intl?

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

  • Can I find deals for business class flights from Irvine to O'Hare Intl?

    Yes. Cheapflights offers flight deals from Irvine to O'Hare Intl 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 O'Hare Intl Airport?

    Currently, August is the cheapest month in which you can book a flight from Irvine to Chicago O'Hare Intl Airport (average of $245). Flying from Irvine to Chicago O'Hare Intl Airport 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 O'Hare Intl Airport?

Book flights to Chicago O'Hare Intl Airport if you plan to visit one of these locations
Schaumburg
Rosemont
Skokie
Gurnee
Hoffman Estates
Des Plaines
Elgin
Arlington Heights
Orland Park
Beloit
Racine
Rockford
Oak Brook
Elk Grove Village
Downers Grove
Naperville
Evanston
Merrillville
Bridgeview
Warrenville

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Irvine to O'Hare Intl

See prices for flight routes from nearby airports that may be better suited for you.
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Top 8 airlines flying from Irvine to O'Hare Intl

Discover the top 8 airlines that operate flights from Irvine to O'Hare Intl. 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 septiembre 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$91Average$193FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$108Average$200FlexibilityNo cancel feeOn-time65%
Sun Country AirCheapest$130Average$330FlexibilityNo cancel feeOn-time83%
SouthwestCheapest$157Average$417FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$190Average$431FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$192Average$403FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$214Average$421FlexibilityNo cancel feeOn-time69%
DeltaCheapest$218Average$388FlexibilityNo cancel feeOn-timeN/A

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