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$64+ 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 2/6. Fares are subject to change and may not be available on all flights or dates of travel.
SNA — ORD
ene. 27 — feb. 31
lun. 1/27
lun. 2/3
1 adult, Economy
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Cheap flight deals from Orange County to Illinois

Discover tips and strategies to find the most affordable flight options for your journey from Orange County (zzKFI) to Illinois (USIL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated enero 22, 2025.

Round-trip from

$120
(Booking.com)

One-way from

$64
(Mytrip)
From Orange County to Illinois
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One-way flight from Orange County to Illinois
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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 enero 22, 2025.

This Booking.com deal was found by Cheapflights users on 1/21. 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.
mar. 2/2512:30 pmSNA - STL
1 stop18h 46mFrontier
jue. 2/2711:08 pmSTL - SNA
1 stop19h 41mFrontier
Deal found 1/21$120
This American Airlines deal was found by Cheapflights users on 1/22. 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.
sáb. 2/151:37 pmSNA - PIA
1 stop6h 11mAmerican Airlines
sáb. 2/226:10 amPIA - SNA
1 stop8h 37mAmerican Airlines
Deal found 1/22$229
This Southwest deal was found by Cheapflights users on 1/22. 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.
jue. 2/131:05 pmLGB - MDW
Nonstop3h 50mSouthwest
mié. 2/199:55 amMDW - LGB
Nonstop4h 40mSouthwest
Deal found 1/22$277
This CheapOair deal was found by Cheapflights users on 1/22. 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. 1/3110:47 amSNA - ORD
1 stop11h 45mMultiple Airlines
jue. 2/610:34 amORD - SNA
2 stops13h 10mMultiple Airlines
Deal found 1/22$279
This CheapOair deal was found by Cheapflights users on 1/21. 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.
sáb. 2/13:00 pmSNA - ORD
1 stop12h 31mSpirit Airlines
mar. 2/48:34 amORD - SNA
2 stops15h 10mSpirit Airlines
Deal found 1/21$280
This American Airlines deal was found by Cheapflights users on 1/21. 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.
mié. 2/511:43 amSNA - MLI
1 stop8h 15mAmerican Airlines
dom. 2/93:28 pmMLI - SNA
1 stop6h 46mAmerican Airlines
Deal found 1/21$284
This Frontier deal was found by Cheapflights users on 1/20. 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.
lun. 2/173:42 pmSNA - MDW
1 stop11h 49mFrontier
lun. 3/36:40 amMDW - SNA
1 stop6h 50mFrontier
Deal found 1/20$286
This American Airlines deal was found by Cheapflights users on 1/22. 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. 4/311:43 amSNA - ORD
Nonstop3h 55mAmerican Airlines
mié. 4/911:45 amORD - SNA
Nonstop4h 27mAmerican Airlines
Deal found 1/22$293
This Southwest deal was found by Cheapflights users on 1/22. 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.
mié. 2/191:35 pmLGB - ORD
1 stop5h 55mSouthwest
mié. 2/266:15 amORD - LGB
1 stop7h 10mSouthwest
Deal found 1/22$297
This Delta deal was found by Cheapflights users on 1/21. 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.
vie. 3/149:30 pmSNA - MDW
1 stop9h 39mDelta
mar. 3/251:16 pmMDW - SNA
1 stop8h 56mDelta
Deal found 1/21$298
This Frontier deal was found by Cheapflights users on 1/22. 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. 1/3110:47 amSNA - ORD
1 stop11h 45mFrontier
dom. 2/26:20 amORD - SNA
1 stop11h 47mFrontier
Deal found 1/22$307
This Delta deal was found by Cheapflights users on 1/22. 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.
mar. 3/111:30 pmLGB - ORD
1 stop6h 15mDelta
sáb. 3/157:45 amORD - LGB
1 stop6h 45mDelta
Deal found 1/22$322

Find flights from Orange County to Illinois within your budget

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 enero 22, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

Santa AnaSt. Louis

SNA - STL

SNASTL

Santa Ana J. Wayne/Orange Cnty

mar. 2/25

12:30 pm-9:16 am

1 stop18h 46m

Lambert-St Louis

jue. 2/27

11:08 pm-4:49 pm

1 stop19h 41m

$120

Santa AnaPeoria

SNA - PIA

SNAPIA

Santa Ana J. Wayne/Orange Cnty

sáb. 2/15

1:37 pm-9:48 pm

1 stop6h 11m

Greater Peoria

sáb. 2/22

6:10 am-12:47 pm

1 stop8h 37m

$229

Long BeachChicago

LGB - MDW

LGBMDW

Long Beach Municipal

jue. 2/13

1:05 pm-6:55 pm

Nonstop3h 50m

Chicago Midway

mié. 2/19

9:55 am-12:35 pm

Nonstop4h 40m

$277

Santa AnaChicago

SNA - ORD

SNAORD

Santa Ana J. Wayne/Orange Cnty

mié. 2/5

6:45 am-12:30 pm

3 stops27h 45m

Chicago O'Hare Intl

vie. 2/7

11:12 am-8:28 am

3 stops23h 16m

$279

Santa AnaMoline

SNA - MLI

SNAMLI

Santa Ana J. Wayne/Orange Cnty

mié. 2/5

11:43 am-9:58 pm

1 stop8h 15m

Moline Quad-City

dom. 2/9

3:28 pm-8:14 pm

1 stop6h 46m

$284

Santa AnaChicago

SNA - ORD

SNAORD

Santa Ana J. Wayne/Orange Cnty

jue. 4/3

3:32 pm-5:05 am

1 stop11h 33m

Chicago O'Hare Intl

mar. 4/8

9:02 pm-11:00 am

2 stops15h 58m

$286

Santa AnaChicago

SNA - MDW

SNAMDW

Santa Ana J. Wayne/Orange Cnty

mar. 2/18

12:30 pm-12:17 am

1 stop9h 47m

Chicago Midway

dom. 2/23

6:40 am-11:30 am

1 stop6h 50m

$286

Santa AnaChicago

SNA - ORD

SNAORD

Santa Ana J. Wayne/Orange Cnty

jue. 4/3

11:43 am-5:38 pm

Nonstop3h 55m

Chicago O'Hare Intl

mié. 4/9

11:45 am-2:12 pm

Nonstop4h 27m

$293

Long BeachChicago

LGB - ORD

LGBORD

Long Beach Municipal

mié. 2/19

1:35 pm-9:30 pm

1 stop5h 55m

Chicago O'Hare Intl

mié. 2/26

6:15 am-11:25 am

1 stop7h 10m

$297

Santa AnaChicago

SNA - ORD

SNAORD

Santa Ana J. Wayne/Orange Cnty

vie. 3/21

3:32 pm-5:04 am

1 stop11h 32m

Chicago O'Hare Intl

dom. 3/23

7:59 pm-4:49 pm

1 stop22h 50m

$310

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/21

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.

Travel insights for flights from Orange County to Illinois

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

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 $320). 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 enero 22, 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 enero 22, 2025.

The most flights from zzKFI to USIL are scheduled on a Monday (23 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (13 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 enero 22, 2025.
See what other customers who have flown with Spirit Airlines, United Airlines and Southwest 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.
Southwest
8.1
Very good
4,654 reviews

Comfort

8.1

Boarding

8.2

Crew

8.7

Food

7.2

Overall

8.1

Entertainment

7.7

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Southwest
8.1
Very good
4,654 reviews
Southwest
8.1
Very good
4,654 reviews

Comfort

8.1

Boarding

8.2

Crew

8.7

Food

7.2

Overall

8.1

Entertainment

7.7

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Alaska Airlines
8.0
Very good
9,707 reviews
Southwest
8.1
Very good
4,654 reviews

Comfort

8.1

Boarding

8.2

Crew

8.7

Food

7.2

Overall

8.1

Entertainment

7.7

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Delta
8.0
Very good
8,512 reviews
Southwest
8.1
Very good
4,654 reviews

Comfort

8.1

Boarding

8.2

Crew

8.7

Food

7.2

Overall

8.1

Entertainment

7.7

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

United Airlines
7.4
Good
8,975 reviews
Southwest
8.1
Very good
4,654 reviews

Comfort

8.1

Boarding

8.2

Crew

8.7

Food

7.2

Overall

8.1

Entertainment

7.7

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Allegiant Air
7.4
Good
801 reviews
Southwest
8.1
Very good
4,654 reviews

Comfort

8.1

Boarding

8.2

Crew

8.7

Food

7.2

Overall

8.1

Entertainment

7.7

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

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 $64. Spirit Airlines flights start at $117 while deals on Delta start at $139 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 $320). 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 7 airlines flying from Orange County to Illinois

Discover the top 7 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 enero 22, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$101Average$251FlexibilityNo cancel feeOn-time65%
FrontierCheapest$118Average$243FlexibilityNo cancel feeOn-time62%
DeltaCheapest$199Average$470FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$283Average$551FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$288Average$526FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$308Average$378FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$397Average$483FlexibilityNo cancel feeOn-time63%
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