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Illinois

$124+ 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 5/12. Fares are subject to change and may not be available on all flights or dates of travel.
SNA — ORD
May 6 — May 131
Tue 5/6
Tue 5/13
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 May 1, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$272
(Orbitz)

One-way from

$124
(Orbitz)

Popular in

December

Cheapest in

February

Average price

$284
Provider with most accurate pricing for Los Angeles-Chicago (CHI) flight deals.
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Provider most trusted by Cheapflights users for Los Angeles-Chicago (CHI) flights.
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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. 5% potential increase in price ($18 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 May 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 May 1, 2025.

This Booking.com deal was found by Cheapflights users on 4/30. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/412:14 pmSNA - STL
1 stop18h 55mFrontier
Wed 5/78:15 pmSTL - SNA
1 stop17h 09mFrontier
Deal found 4/30$228
This Orbitz deal was found by Cheapflights users on 4/28. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/143:16 pmSNA - ORD
2 stops17h 39mMultiple Airlines
Fri 5/233:15 pmORD - SNA
1 stop6h 20mMultiple Airlines
Deal found 4/28$272
This Delta deal was found by Cheapflights users on 4/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/229:45 amSNA - ORD
1 stop6h 35mDelta
Sun 5/255:30 amORD - SNA
1 stop7h 35mDelta
Deal found 4/29$273
This Delta deal was found by Cheapflights users on 4/30. 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.
Wed 6/48:00 amSNA - MDW
1 stop7h 45mDelta
Sat 6/76:00 amMDW - SNA
1 stop9h 05mDelta
Deal found 4/30$274
This Cheapflightsfares deal was found by Cheapflights users on 4/30. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/224:27 pmSNA - ORD
1 stop10h 58mSpirit Airlines
Mon 5/2611:50 amORD - SNA
1 stop11h 27mSpirit Airlines
Deal found 4/30$274
This United Airlines deal was found by Cheapflights users on 4/29. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/2810:35 amSNA - ORD
Nonstop4h 11mUnited Airlines
Sun 6/15:02 amORD - SNA
1 stop6h 12mUnited Airlines
Deal found 4/29$275
This CheapOair deal was found by Cheapflights users on 4/30. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/2712:01 pmSNA - MDW
1 stop6h 52mFrontier
Sat 5/312:44 pmMDW - SNA
1 stop22h 32mFrontier
Deal found 4/30$280
This Delta deal was found by Cheapflights users on 4/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/316:45 amSNA - MLI
1 stop7h 49mDelta
Sat 6/76:00 amMLI - SNA
1 stop9h 05mDelta
Deal found 4/29$283
This American Airlines deal was found by Cheapflights users on 4/28. 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.
Tue 7/227:55 amSNA - PIA
1 stop7h 59mAmerican Airlines
Wed 7/306:00 amPIA - SNA
1 stop6h 38mAmerican Airlines
Deal found 4/28$289
This American Airlines deal was found by Cheapflights users on 4/29. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/123:09 pmSNA - MLI
1 stop6h 28mAmerican Airlines
Sat 8/166:20 amMLI - SNA
1 stop6h 13mAmerican Airlines
Deal found 4/29$289
This American Airlines deal was found by Cheapflights users on 4/28. 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.
Wed 5/141:30 pmSNA - ORD
Nonstop4h 09mAmerican Airlines
Fri 5/2311:55 amORD - SNA
Nonstop4h 29mAmerican Airlines
Deal found 4/28$294
This Frontier deal was found by Cheapflights users on 4/29. 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.
Fri 5/2312:01 pmSNA - ORD
1 stop9h 51mFrontier
Thu 5/296:00 amORD - SNA
1 stop7h 11mFrontier
Deal found 4/29$297

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 May 1, 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 AnaChicago

SNA - ORD

SNAORD

Santa Ana J. Wayne/Orange Cnty

Wed 5/14

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

$272

Santa AnaChicago

SNA - ORD

SNAORD

Santa Ana J. Wayne/Orange Cnty

Thu 5/22

9:45 am-6:20 pm

1 stop6h 35m

Chicago O'Hare Intl

Sun 5/25

5:30 am-11:05 am

1 stop7h 35m

$273

Santa AnaChicago

SNA - ORD

SNAORD

Santa Ana J. Wayne/Orange Cnty

Thu 5/22

4:27 pm-5:25 am

1 stop10h 58m

Chicago O'Hare Intl

Mon 5/26

11:50 am-9:17 pm

1 stop11h 27m

$274

Santa AnaChicago

SNA - MDW

SNAMDW

Santa Ana J. Wayne/Orange Cnty

Wed 6/4

8:00 am-5:45 pm

1 stop7h 45m

Chicago Midway

Sat 6/7

6:00 am-1:05 pm

1 stop9h 05m

$274

Santa AnaChicago

SNA - ORD

SNAORD

Santa Ana J. Wayne/Orange Cnty

Wed 5/28

10:35 am-4:46 pm

Nonstop4h 11m

Chicago O'Hare Intl

Sun 6/1

5:02 am-9:14 am

1 stop6h 12m

$275

Santa AnaChicago

SNA - MDW

SNAMDW

Santa Ana J. Wayne/Orange Cnty

Tue 5/27

12:01 pm-8:53 pm

1 stop6h 52m

Chicago Midway

Sat 5/31

2:44 pm-11:16 am

1 stop22h 32m

$280

Santa AnaMoline

SNA - MLI

SNAMLI

Santa Ana J. Wayne/Orange Cnty

Sat 5/31

6:45 am-4:34 pm

1 stop7h 49m

Moline Quad-City

Sat 6/7

6:00 am-1:05 pm

1 stop9h 05m

$283

Santa AnaPeoria

SNA - PIA

SNAPIA

Santa Ana J. Wayne/Orange Cnty

Tue 7/22

7:55 am-5:54 pm

1 stop7h 59m

Greater Peoria

Wed 7/30

6:00 am-10:38 am

1 stop6h 38m

$289

Santa AnaMoline

SNA - MLI

SNAMLI

Santa Ana J. Wayne/Orange Cnty

Tue 8/12

3:09 pm-11:37 pm

1 stop6h 28m

Moline Quad-City

Sat 8/16

6:20 am-10:33 am

1 stop6h 13m

$289

Santa AnaSt. Louis

SNA - STL

SNASTL

Santa Ana J. Wayne/Orange Cnty

Tue 5/27

12:01 pm-10:09 am

1 stop20h 08m

Lambert-St Louis

Fri 5/30

7:24 pm-11:11 am

1 stop17h 47m

$290

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

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 May 1, 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 May 1, 2025.

The most flights from zzKFI to USIL are scheduled on a Thursday (29 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (6 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 May 1, 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
9,972 reviews

Boarding

8.1

Comfort

7.9

Food

7.1

Entertainment

7.1

Crew

8.5

Overall

8.0

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
9,972 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Boarding

8.1

Comfort

7.9

Food

7.1

Entertainment

7.1

Crew

8.5

Overall

8.0

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
4,294 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Boarding

8.1

Comfort

7.9

Food

7.1

Entertainment

7.1

Crew

8.5

Overall

8.0

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
7,934 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Boarding

8.1

Comfort

7.9

Food

7.1

Entertainment

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.9
Good
2,408 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Boarding

8.1

Comfort

7.9

Food

7.1

Entertainment

7.1

Crew

8.5

Overall

8.0

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
8,696 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Boarding

8.1

Comfort

7.9

Food

7.1

Entertainment

7.1

Crew

8.5

Overall

8.0

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 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 Spirit Airlines, which is currently one of the cheapest options available, starting at $124. Frontier flights start at $125 while deals on Delta start at $129 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 May 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$101Average$234FlexibilityNo cancel feeOn-time65%
FrontierCheapest$110Average$250FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$264Average$510FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$271Average$496FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$308Average$453FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$401Average$446FlexibilityNo cancel feeOn-time63%

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