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$97+ Cheap flights from Orange County to Illinois

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 6/3. Fares are subject to change and may not be available on all flights or dates of travel.
SNA — ORD
Apr 30 — May 71
Wed 4/30
Wed 5/7
1 adult, Economy
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Cheap flight deals from Orange County to Illinois

Keep the following information in mind while searching for Orange County to Illinois flight deals. Data was last updated April 25, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$201
(CheapOair)

One-way from

$97
(CheapOair)

Popular in

June

Cheapest in

February

Average price

$313
Provider with most accurate pricing for Los Angeles-Chicago (CHI) flight deals.
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From Orange County to Illinois
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One-way flight from Orange County to Illinois
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Highest demand for flights based on searches. 3% potential increase in price ($11 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($3 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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Find flight deals from Orange County to Illinois

Cheapest flights from Orange County to Illinois
Explore the most affordable flight options available from Orange County to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 25, 2025.

This CheapOair deal was found by Cheapflights users on 4/24. 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.
Wed 4/3012:20 pmSNA - STL
1 stop24h 47mFrontier
Fri 5/29:55 pmSTL - SNA
1 stop21h 24mFrontier
Deal found 4/24$191
This American Airlines deal was found by Cheapflights users on 4/23. 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.
Tue 5/2010:25 amSNA - MLI
1 stop8h 59mAmerican Airlines
Wed 5/283:25 pmMLI - SNA
1 stop8h 59mAmerican Airlines
Deal found 4/23$240
This American Airlines deal was found by Cheapflights users on 4/24. 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.
Wed 6/47:45 amSNA - PIA
1 stop6h 49mAmerican Airlines
Tue 6/1710:05 amPIA - SNA
1 stop6h 13mAmerican Airlines
Deal found 4/24$251
This CheapOair deal was found by Cheapflights users on 4/24. 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.
Sat 5/106:10 pmSNA - MDW
1 stop18h 38mFrontier
Sun 5/118:03 pmMDW - SNA
1 stop17h 58mFrontier
Deal found 4/24$271
This CheapOair deal was found by Cheapflights users on 4/24. 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.
Sun 5/2512:01 pmSNA - ORD
1 stop9h 51mFrontier
Tue 5/276:00 amORD - SNA
1 stop7h 11mFrontier
Deal found 4/24$271
This Mytrip deal was found by Cheapflights users on 4/25. 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 5/237:58 pmSNA - ORD
2 stops32h 44mSpirit Airlines
Fri 5/309:02 pmORD - SNA
1 stop19h 19mSpirit Airlines
Deal found 4/25$272
This CheapOair deal was found by Cheapflights users on 4/25. 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 5/193:16 pmSNA - ORD
2 stops17h 39mMultiple Airlines
Fri 5/233:15 pmORD - SNA
1 stop6h 20mMultiple Airlines
Deal found 4/25$274
This United Airlines deal was found by Cheapflights users on 4/24. 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.
Wed 6/114:02 pmSNA - ORD
1 stop6h 23mUnited Airlines
Mon 6/167:40 pmORD - SNA
Nonstop4h 27mUnited Airlines
Deal found 4/24$275
This Alaska Airlines deal was found by Cheapflights users on 4/24. 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.
Wed 5/2812:35 pmSNA - ORD
2 stops9h 21mAlaska Airlines
Thu 6/57:00 amORD - SNA
1 stop8h 17mAlaska Airlines
Deal found 4/24$281
This Delta deal was found by Cheapflights users on 4/24. 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.
Tue 5/2712:17 pmSNA - MDW
1 stop7h 10mDelta
Tue 6/31:55 pmMDW - SNA
1 stop8h 27mDelta
Deal found 4/24$283
This Delta deal was found by Cheapflights users on 4/23. 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.
Wed 5/142:15 pmSNA - ORD
1 stop7h 43mDelta
Sat 5/175:30 amORD - SNA
1 stop7h 31mDelta
Deal found 4/23$286
This American Airlines deal was found by Cheapflights users on 4/24. 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.
Wed 5/1411:10 amSNA - ORD
Nonstop4h 09mAmerican Airlines
Mon 6/27:05 amORD - SNA
Nonstop4h 29mAmerican Airlines
Deal found 4/24$294

Cheapflights Fare Finder

Customize your flight search to find flights from Orange County to Illinois 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 April 25, 2025.
Use the filters below to find and compare flights from Orange County to Illinois that are best for you.

Fly from

Orange County

Fly to

Illinois

Route

Depart

Return

Price

Santa AnaSt. Louis

SNA - STL

SNASTL

Santa Ana J. Wayne/Orange Cnty

Fri 5/9

12:19 pm-9:59 am

1 stop19h 40m

Lambert-St Louis

Sun 5/11

9:55 pm-6:36 pm

1 stop22h 41m

$201

Santa AnaMoline

SNA - MLI

SNAMLI

Santa Ana J. Wayne/Orange Cnty

Tue 5/20

10:25 am-9:24 pm

1 stop8h 59m

Moline Quad-City

Wed 5/28

3:25 pm-10:24 pm

1 stop8h 59m

$240

Santa AnaPeoria

SNA - PIA

SNAPIA

Santa Ana J. Wayne/Orange Cnty

Wed 6/4

7:45 am-4:34 pm

1 stop6h 49m

Greater Peoria

Tue 6/17

10:05 am-2:18 pm

1 stop6h 13m

$251

Santa AnaChicago

SNA - MDW

SNAMDW

Santa Ana J. Wayne/Orange Cnty

Sat 5/10

6:10 pm-2:48 pm

1 stop18h 38m

Chicago Midway

Sun 5/11

8:03 pm-12:01 pm

1 stop17h 58m

$271

Santa AnaChicago

SNA - ORD

SNAORD

Santa Ana J. Wayne/Orange Cnty

Sun 5/25

12:01 pm-11:52 pm

1 stop9h 51m

Chicago O'Hare Intl

Tue 5/27

6:00 am-11:11 am

1 stop7h 11m

$271

Santa AnaChicago

SNA - ORD

SNAORD

Santa Ana J. Wayne/Orange Cnty

Fri 5/23

7:58 pm-6:42 am

2 stops32h 44m

Chicago O'Hare Intl

Fri 5/30

9:02 pm-2:21 pm

1 stop19h 19m

$272

Santa AnaChicago

SNA - ORD

SNAORD

Santa Ana J. Wayne/Orange Cnty

Mon 5/19

3:16 pm-10:55 am

2 stops17h 39m

Chicago O'Hare Intl

Fri 5/23

3:15 pm-7:35 pm

1 stop6h 20m

$274

Santa AnaChicago

SNA - ORD

SNAORD

Santa Ana J. Wayne/Orange Cnty

Wed 6/11

4:02 pm-12:25 am

1 stop6h 23m

Chicago O'Hare Intl

Mon 6/16

7:40 pm-10:07 pm

Nonstop4h 27m

$275

Santa AnaChicago

SNA - ORD

SNAORD

Santa Ana J. Wayne/Orange Cnty

Wed 5/28

12:35 pm-11:56 pm

2 stops9h 21m

Chicago O'Hare Intl

Thu 6/5

7:00 am-1:17 pm

1 stop8h 17m

$281

Santa AnaChicago

SNA - MDW

SNAMDW

Santa Ana J. Wayne/Orange Cnty

Tue 5/27

12:17 pm-9:27 pm

1 stop7h 10m

Chicago Midway

Tue 6/3

1:55 pm-8:22 pm

1 stop8h 27m

$283

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/24

Showing 1-10 of 60 results
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Best time to book a flight from Orange County to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from Orange County 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 Orange County to Illinois

What is the cheapest month to book a flight from Orange County to Illinois?

Currently, August is the cheapest month in which you can book a flight from Orange County to Illinois (average of $245). Flying from Orange County to Illinois 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 KFI to IL?

Find hourly flight availability from Orange County to Illinois. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 25, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Orange County to Illinois as you normally would.

Weekly flight availability from Orange County to Illinois

Explore weekly flight availability from Orange County to Illinois. 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 April 25, 2025.

The most flights from zzKFI to USIL are scheduled on a Wednesday (29 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (10 on average).

Rainfall in Illinois by month

Plan your trip to Illinois by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Illinois ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Illinois when rainfall is around 1.7 in.

Temperature in Illinois by month

Plan your trip to Illinois by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Illinois, 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 23.0 F).

Reviews of airlines servicing Illinois

Get insights into the airlines that provide service to Illinois. 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 Illinois. Reviews last updated April 25, 2025.
See what other customers who have flown with Alaska Airlines, Southwest and Delta from Orange County to Illinois have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,928 reviews

Entertainment

7.1

Boarding

8.2

Crew

8.5

Food

7.1

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Alaska Airlines
8.0
Very good
9,928 reviews
Alaska Airlines
8.0
Very good
9,928 reviews

Entertainment

7.1

Boarding

8.2

Crew

8.5

Food

7.1

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Southwest
8.0
Very good
4,287 reviews
Alaska Airlines
8.0
Very good
9,928 reviews

Entertainment

7.1

Boarding

8.2

Crew

8.5

Food

7.1

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Delta
8.0
Very good
7,920 reviews
Alaska Airlines
8.0
Very good
9,928 reviews

Entertainment

7.1

Boarding

8.2

Crew

8.5

Food

7.1

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Hawaiian Airlines
7.9
Good
2,395 reviews
Alaska Airlines
8.0
Very good
9,928 reviews

Entertainment

7.1

Boarding

8.2

Crew

8.5

Food

7.1

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
United Airlines
7.4
Good
8,685 reviews
Alaska Airlines
8.0
Very good
9,928 reviews

Entertainment

7.1

Boarding

8.2

Crew

8.5

Food

7.1

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Related info for your journey

Find useful and relevant information for your journey from Orange County to Illinois. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines to fly from Orange County to Illinois one-way?

    To fly one-way, consider booking your trip with Frontier, which is currently one of the cheapest options available, starting at $97. Spirit Airlines flights start at $132 while deals on Delta start at $142 one-way.

  • Can I find deals for flights from Orange County to Illinois that include hotel bookings?

    Yes. In addition to deals on Orange County to Illinois flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Orange County to Illinois?

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

  • Can I find deals for business class flights from Orange County to Illinois?

    Yes. Cheapflights offers flight deals from Orange County to Illinois 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 Orange County to Illinois?

    Currently, August is the cheapest month in which you can book a flight from Orange County to Illinois (average of $245). Flying from Orange County to Illinois 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

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Alternative routes for Orange County to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
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Top 6 airlines flying from Orange County to Illinois

Discover the top 6 airlines that operate flights from Orange County to Illinois. 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 April 25, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$101Average$234FlexibilityNo cancel feeOn-time65%
FrontierCheapest$110Average$247FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$264Average$518FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$275Average$518FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$308Average$458FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$401Average$446FlexibilityNo cancel feeOn-time63%

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