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Orange County

$81+ 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 4/30. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SNA
Mar 8 — Mar 151
Sat 3/8
Sat 3/15
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 March 3, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$170
(CheapOair)

One-way from

$81
(CheapOair)

Popular in

December

Cheapest in

September

Average price

$361
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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. 4% potential increase in price ($15 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 March 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 March 3, 2025.

This CheapOair deal was found by Cheapflights users on 3/3. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/106:53 pmSTL - SNA
1 stop18h 31mFrontier
Wed 5/1412:19 pmSNA - STL
1 stop24h 48mFrontier
Deal found 3/3$170
This American Airlines deal was found by Cheapflights users on 3/3. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/166:21 amPIA - SNA
1 stop7h 59mAmerican Airlines
Sat 4/1910:25 amSNA - PIA
1 stop8h 52mAmerican Airlines
Deal found 3/3$229
This CheapOair deal was found by Cheapflights users on 3/3. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/167:59 pmORD - SNA
1 stop22h 50mFrontier
Wed 3/1912:34 pmSNA - ORD
1 stop10h 10mFrontier
Deal found 3/3$257
This CheapOair deal was found by Cheapflights users on 3/3. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/168:44 pmMDW - SNA
1 stop22h 05mFrontier
Wed 3/1912:34 pmSNA - MDW
1 stop9h 43mFrontier
Deal found 3/3$257
This Mytrip deal was found by Cheapflights users on 3/1. 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.
Wed 3/127:48 amORD - SNA
3 stops28h 09mSpirit Airlines
Fri 4/46:45 amSNA - ORD
2 stops21h 01mSpirit Airlines
Deal found 3/1$258
This Booking.com deal was found by Cheapflights users on 3/3. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/136:45 amORD - SNA
1 stop6h 45mMultiple Airlines
Mon 3/1710:52 amSNA - ORD
2 stops17h 50mMultiple Airlines
Deal found 3/3$266
This American Airlines deal was found by Cheapflights users on 3/2. 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 4/168:10 amORD - SNA
Nonstop4h 34mAmerican Airlines
Wed 4/2311:34 amSNA - ORD
Nonstop4h 03mAmerican Airlines
Deal found 3/2$268
This Alaska Airlines deal was found by Cheapflights users on 3/2. 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 4/306:00 amORD - SNA
1 stop10h 19mAlaska Airlines
Wed 5/71:30 pmSNA - ORD
1 stop8h 29mAlaska Airlines
Deal found 3/2$270
This Mytrip deal was found by Cheapflights users on 3/2. 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.
Tue 4/16:47 pmSTL - SNA
3 stops28h 41mSpirit Airlines
Mon 4/73:33 pmSNA - STL
3 stops24h 19mSpirit Airlines
Deal found 3/2$276
This Delta deal was found by Cheapflights users on 3/2. 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.
Sat 5/32:15 pmORD - SNA
1 stop8h 18mDelta
Tue 5/611:18 amSNA - ORD
1 stop10h 41mDelta
Deal found 3/2$291
This Delta deal was found by Cheapflights users on 3/2. 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 4/291:16 pmMDW - SNA
1 stop9h 09mDelta
Sat 5/36:45 amSNA - MDW
1 stop9h 14mDelta
Deal found 3/2$291
This Delta deal was found by Cheapflights users on 3/3. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/65:50 amMLI - SNA
1 stop7h 55mDelta
Sat 5/1012:12 pmSNA - MLI
1 stop8h 29mDelta
Deal found 3/3$308

Find flights from Illinois to Orange County within your budget

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 March 3, 2025.

Fly from

Illinois

Fly to

Orange County

Route

Depart

Return

Price

St. LouisSanta Ana

STL - SNA

STLSNA

Lambert-St Louis

Sat 5/10

6:53 pm-11:24 am

1 stop18h 31m

Santa Ana J. Wayne/Orange Cnty

Wed 5/14

12:19 pm-3:07 pm

1 stop24h 48m

$170

PeoriaSanta Ana

PIA - SNA

PIASNA

Greater Peoria

Wed 4/16

6:21 am-12:20 pm

1 stop7h 59m

Santa Ana J. Wayne/Orange Cnty

Sat 4/19

10:25 am-9:17 pm

1 stop8h 52m

$229

ChicagoSanta Ana

ORD - SNA

ORDSNA

Chicago O'Hare Intl

Sun 3/16

7:59 pm-4:49 pm

1 stop22h 50m

Santa Ana J. Wayne/Orange Cnty

Wed 3/19

12:34 pm-12:44 am

1 stop10h 10m

$257

ChicagoSanta Ana

MDW - SNA

MDWSNA

Chicago Midway

Sun 3/16

8:44 pm-4:49 pm

1 stop22h 05m

Santa Ana J. Wayne/Orange Cnty

Wed 3/19

12:34 pm-12:17 am

1 stop9h 43m

$257

ChicagoSanta Ana

ORD - SNA

ORDSNA

Chicago O'Hare Intl

Mon 3/24

8:09 am-9:28 pm

1 stop15h 19m

Santa Ana J. Wayne/Orange Cnty

Tue 3/25

3:33 pm-6:42 am

1 stop13h 09m

$259

ChicagoSanta Ana

ORD - SNA

ORDSNA

Chicago O'Hare Intl

Thu 3/13

6:45 am-11:30 am

1 stop6h 45m

Santa Ana J. Wayne/Orange Cnty

Mon 3/17

10:52 am-6:42 am

2 stops17h 50m

$266

ChicagoSanta Ana

ORD - SNA

ORDSNA

Chicago O'Hare Intl

Wed 4/16

8:10 am-10:44 am

Nonstop4h 34m

Santa Ana J. Wayne/Orange Cnty

Wed 4/23

11:34 am-5:37 pm

Nonstop4h 03m

$268

ChicagoSanta Ana

ORD - SNA

ORDSNA

Chicago O'Hare Intl

Wed 4/30

6:00 am-2:19 pm

1 stop10h 19m

Santa Ana J. Wayne/Orange Cnty

Wed 5/7

1:30 pm-11:59 pm

1 stop8h 29m

$270

St. LouisSanta Ana

STL - SNA

STLSNA

Lambert-St Louis

Tue 4/1

6:47 pm-9:28 pm

3 stops28h 41m

Santa Ana J. Wayne/Orange Cnty

Mon 4/7

3:33 pm-5:52 pm

3 stops24h 19m

$276

ChicagoSanta Ana

ORD - SNA

ORDSNA

Chicago O'Hare Intl

Sat 5/3

2:15 pm-8:33 pm

1 stop8h 18m

Santa Ana J. Wayne/Orange Cnty

Tue 5/6

11:18 am-11:59 pm

1 stop10h 41m

$291

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/3

Showing 1-10 of 60 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.

Travel insights for flights from Illinois to Orange County

Get recent, data-driven insights about flights from Illinois to Orange County including ideal travel times, pricing trends, and more.

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 June is currently the most expensive (average of $415). 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 March 3, 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 March 3, 2025.

The most flights from USIL to zzKFI are scheduled on a Monday (19 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (5 on average).

Rainfall in Orange County by month

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

In terms of precipitation, rainfall in Orange County ranges from 0.0 - 3.1 inches per month. February is typically the wettest month, when rainfall can reach 3.1 in. July is typically the driest time to visit Orange County when rainfall is around 0.0 in.

Temperature in Orange County by month

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

If weather is an important factor for your trip to Orange County, use this chart to help with planning. For those seeking warmer temperatures, August 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 55.4 F).

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 March 3, 2025.
To help decide which airline to fly from Illinois to Orange County, see what other customers have to say about Southwest, Alaska Airlines and Delta. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,333 reviews

Crew

8.7

Boarding

8.2

Comfort

8.1

Food

7.1

Entertainment

7.6

Overall

8.1

Reviews

1 / 20

10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

Southwest
8.1
Very good
4,333 reviews
Southwest
8.1
Very good
4,333 reviews

Crew

8.7

Boarding

8.2

Comfort

8.1

Food

7.1

Entertainment

7.6

Overall

8.1

Reviews

1 / 20

10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

Alaska Airlines
8.0
Very good
9,713 reviews
Southwest
8.1
Very good
4,333 reviews

Crew

8.7

Boarding

8.2

Comfort

8.1

Food

7.1

Entertainment

7.6

Overall

8.1

Reviews

1 / 20

10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

Delta
8.0
Very good
8,070 reviews
Southwest
8.1
Very good
4,333 reviews

Crew

8.7

Boarding

8.2

Comfort

8.1

Food

7.1

Entertainment

7.6

Overall

8.1

Reviews

1 / 20

10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

Hawaiian Airlines
7.9
Good
2,320 reviews
Southwest
8.1
Very good
4,333 reviews

Crew

8.7

Boarding

8.2

Comfort

8.1

Food

7.1

Entertainment

7.6

Overall

8.1

Reviews

1 / 20

10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

United Airlines
7.4
Good
8,679 reviews
Southwest
8.1
Very good
4,333 reviews

Crew

8.7

Boarding

8.2

Comfort

8.1

Food

7.1

Entertainment

7.6

Overall

8.1

Reviews

1 / 20

10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

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 Frontier ($81), American Airlines ($115), and Spirit Airlines ($126).

  • 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 June is currently the most expensive (average of $415). 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 March 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$106Average$226FlexibilityNo cancel feeOn-time65%
FrontierCheapest$109Average$170FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$238Average$488FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$279Average$490FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$328Average$544FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$387Average$448FlexibilityNo cancel feeOn-time63%
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