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Orange County

$104+ Cheap flights from Illinois to Orange County

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 10/27. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SNA
ago. 5 — ago. 121
mar. 8/5
mar. 8/12
1 adult, Economy
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Cheap flight deals from Illinois to Orange County

Keep the following information in mind while searching for Illinois to Orange County flight deals. Data was last updated julio 31, 2025.

Round-trip from

$219
(FlightHub)

One-way from

$106
(FlightHub)

Popular in

December

Cheapest in

September

Average price

$274
From Illinois to Orange County
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One-way flight from Illinois to Orange County
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Highest demand for flights based on searches. 9% potential increase in price ($30 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($10 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find flight deals from Illinois to Orange County

Cheapest flights from Illinois to Orange County
Explore the most affordable flight options available from Illinois to Orange County. Find the lowest fares from popular airlines and budget airlines, with prices last updated on julio 31, 2025.

This FlightHub deal was found by Cheapflights users on 7/29. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 9/2512:05 pmSTL - SNA
1 stop25h 30mSpirit Airlines
sáb. 9/2712:32 pmSNA - STL
1 stop20h 18mSpirit Airlines
Deal found 7/29$219
This FlightHub deal was found by Cheapflights users on 7/29. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/27:54 pmSTL - SNA
1 stop17h 33mFrontier
sáb. 9/612:58 pmSNA - STL
1 stop18h 08mFrontier
Deal found 7/29$225
This CheapOair deal was found by Cheapflights users on 7/31. 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.
vie. 11/77:35 amORD - SNA
2 stops15h 24mSpirit Airlines
dom. 11/95:46 pmSNA - ORD
2 stops13h 58mSpirit Airlines
Deal found 7/31$244
This FlightHub deal was found by Cheapflights users on 7/28. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 8/137:00 amORD - SNA
1 stop6h 11mFrontier
dom. 8/173:32 pmSNA - ORD
1 stop27h 44mFrontier
Deal found 7/28$245
This Expedia deal was found by Cheapflights users on 7/30. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 8/137:00 amORD - SNA
1 stop6h 11mMultiple Airlines
mié. 8/208:30 pmSNA - ORD
1 stop13h 13mMultiple Airlines
Deal found 7/30$247
This Frontier deal was found by Cheapflights users on 7/29. 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.
jue. 8/2111:00 amMDW - SNA
1 stop7h 57mFrontier
dom. 8/2411:58 amSNA - MDW
1 stop10h 47mFrontier
Deal found 7/29$258
This American Airlines deal was found by Cheapflights users on 7/28. 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.
jue. 8/287:01 amSTL - SNA
1 stop6h 37mAmerican Airlines
mar. 9/210:38 amSNA - STL
1 stop9h 39mAmerican Airlines
Deal found 7/28$267
This Alaska Airlines deal was found by Cheapflights users on 7/30. 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.
sáb. 9/63:20 pmORD - SNA
1 stop9h 10mAlaska Airlines
dom. 9/79:15 pmSNA - ORD
1 stop7h 48mAlaska Airlines
Deal found 7/30$268
This Delta deal was found by Cheapflights users on 7/30. 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.
sáb. 8/231:43 pmMDW - SNA
1 stop8h 42mDelta
dom. 8/319:00 amSNA - MDW
1 stop6h 37mDelta
Deal found 7/30$268
This American Airlines deal was found by Cheapflights users on 7/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 9/256:49 pmORD - SNA
Nonstop4h 31mAmerican Airlines
lun. 9/293:10 pmSNA - ORD
Nonstop4h 08mAmerican Airlines
Deal found 7/30$269
This Southwest deal was found by Cheapflights users on 7/29. 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.
dom. 11/25:20 amSTL - SNA
1 stop7h 30mSouthwest
sáb. 11/87:30 amSNA - STL
2 stops7h 30mSouthwest
Deal found 7/29$277
This United Airlines deal was found by Cheapflights users on 7/30. 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.
jue. 8/217:58 pmORD - SNA
Nonstop4h 32mUnited Airlines
sáb. 8/2311:30 amSNA - ORD
1 stop7h 10mUnited Airlines
Deal found 7/30$279

Cheapflights Fare Finder

 
Customize your flight search to find flights from Illinois to Orange County 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 julio 31, 2025.
Use the filters below to find and compare flights from Illinois to Orange County that are best for you.

Fly from

Illinois

Fly to

Orange County

Route

Depart

Return

Price

St. LouisSanta Ana

STL - SNA

STLSNA

Lambert-St Louis

jue. 9/25

12:05 pm-11:35 am

1 stop25h 30m

Santa Ana J. Wayne/Orange Cnty

sáb. 9/27

12:32 pm-10:50 am

1 stop20h 18m

$219

St. LouisSanta Ana

STL - SNA

STLSNA

Lambert-St Louis

mar. 9/2

7:54 pm-11:27 am

1 stop17h 33m

Santa Ana J. Wayne/Orange Cnty

sáb. 9/6

12:58 pm-9:06 am

1 stop18h 08m

$225

ChicagoSanta Ana

ORD - SNA

ORDSNA

Chicago O'Hare Intl

lun. 8/11

7:08 am-7:03 pm

1 stop13h 55m

Santa Ana J. Wayne/Orange Cnty

lun. 8/18

6:45 am-7:42 pm

2 stops10h 57m

$244

ChicagoSanta Ana

ORD - SNA

ORDSNA

Chicago O'Hare Intl

mié. 8/13

7:00 am-11:11 am

1 stop6h 11m

Santa Ana J. Wayne/Orange Cnty

dom. 8/17

3:32 pm-9:16 pm

1 stop27h 44m

$245

ChicagoSanta Ana

ORD - SNA

ORDSNA

Chicago O'Hare Intl

mié. 8/13

7:00 am-11:11 am

1 stop6h 11m

Santa Ana J. Wayne/Orange Cnty

mié. 8/20

8:30 pm-11:43 am

1 stop13h 13m

$247

ChicagoSanta Ana

MDW - SNA

MDWSNA

Chicago Midway

jue. 8/21

11:00 am-4:57 pm

1 stop7h 57m

Santa Ana J. Wayne/Orange Cnty

dom. 8/24

11:58 am-12:45 am

1 stop10h 47m

$258

St. LouisSanta Ana

STL - SNA

STLSNA

Lambert-St Louis

jue. 8/28

7:01 am-11:38 am

1 stop6h 37m

Santa Ana J. Wayne/Orange Cnty

mar. 9/2

10:38 am-10:17 pm

1 stop9h 39m

$267

ChicagoSanta Ana

ORD - SNA

ORDSNA

Chicago O'Hare Intl

sáb. 9/6

3:20 pm-10:30 pm

1 stop9h 10m

Santa Ana J. Wayne/Orange Cnty

dom. 9/7

9:15 pm-7:03 am

1 stop7h 48m

$268

ChicagoSanta Ana

MDW - SNA

MDWSNA

Chicago Midway

sáb. 8/23

1:43 pm-8:25 pm

1 stop8h 42m

Santa Ana J. Wayne/Orange Cnty

dom. 8/31

9:00 am-5:37 pm

1 stop6h 37m

$268

ChicagoSanta Ana

ORD - SNA

ORDSNA

Chicago O'Hare Intl

jue. 9/25

8:15 am-10:43 am

Nonstop4h 28m

Santa Ana J. Wayne/Orange Cnty

dom. 9/28

9:54 am-4:07 pm

Nonstop4h 13m

$269

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

Showing 1-10 of 59 results
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Best time to book a flight from Illinois to Orange County

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

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

Currently, January is the cheapest month in which you can book a flight from Illinois to Orange County (average of $298). Flying from Illinois to Orange County in March is currently the most expensive (average of $376). 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 IL to KFI?

Find hourly flight availability from Illinois to Orange County. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated julio 31, 2025.

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

Weekly flight availability from Illinois to Orange County

Explore weekly flight availability from Illinois to Orange County. 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 julio 31, 2025.

The most flights from USIL to zzKFI are scheduled on a Thursday (24 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (8 on average).

Reviews of airlines servicing Orange County

Get insights into the airlines that provide service to Orange County. 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 Orange County. Reviews last updated julio 31, 2025.
Read reviews from past customers who have flown Alaska Airlines, Southwest, and Delta from Illinois to Orange County. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Crew

8.5

Food

7.1

Overall

8.0

Boarding

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Crew

8.5

Food

7.1

Overall

8.0

Boarding

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,246 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Crew

8.5

Food

7.1

Overall

8.0

Boarding

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,981 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Crew

8.5

Food

7.1

Overall

8.0

Boarding

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.8
Good
2,611 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Crew

8.5

Food

7.1

Overall

8.0

Boarding

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,900 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Crew

8.5

Food

7.1

Overall

8.0

Boarding

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Related info for your journey

Find useful and relevant information for your journey from Illinois to Orange County. 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 Illinois to Orange County one-way?

    The cheapest airlines for a one-way flight from Illinois to Orange County are Spirit Airlines ($106), Frontier ($109), and Alaska Airlines ($124).

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Illinois to Orange County (average of $298). Flying from Illinois to Orange County in March is currently the most expensive (average of $376). 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 Illinois to Orange County

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

Discover the top 6 airlines that operate flights from Illinois to Orange County. 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 julio 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$88Average$175FlexibilityNo cancel feeOn-time65%
FrontierCheapest$109Average$214FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$234Average$479FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$280Average$457FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$288Average$446FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$336Average$465FlexibilityNo cancel feeOn-time75%

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