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$65+ 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 4/15. Fares are subject to change and may not be available on all flights or dates of travel.
SNA — ORD
feb. 28 — mar. 71
vie. 2/28
vie. 3/7
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 febrero 23, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$126
(Frontier)

One-way from

$65
(Mytrip)

Popular in

March

Cheapest in

October

Average price

$274
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. 2% potential increase in price ($6 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).
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Average for round-trip flights in February 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 febrero 23, 2025.

This Frontier deal was found by Cheapflights users on 2/21. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 4/1012:25 pmSNA - STL
1 stop18h 41mFrontier
sáb. 4/196:51 pmSTL - SNA
1 stop18h 44mFrontier
Deal found 2/21$126
This American Airlines deal was found by Cheapflights users on 2/22. 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.
mar. 4/227:45 amSNA - PIA
1 stop7h 00mAmerican Airlines
mié. 4/306:33 amPIA - SNA
1 stop7h 00mAmerican Airlines
Deal found 2/22$229
This Southwest deal was found by Cheapflights users on 2/20. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 3/101:30 pmLGB - MDW
Nonstop3h 50mSouthwest
mié. 3/129:55 amMDW - LGB
Nonstop4h 30mSouthwest
Deal found 2/20$277
This Cheapflightsfares deal was found by Cheapflights users on 2/21. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 4/1811:00 amSNA - MDW
1 stop6h 41mFrontier
lun. 4/216:45 amMDW - SNA
1 stop6h 50mFrontier
Deal found 2/21$283
This Delta deal was found by Cheapflights users on 2/21. 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.
lun. 3/246:57 pmSNA - MDW
2 stops11h 48mDelta
jue. 3/2712:51 pmMDW - SNA
1 stop8h 56mDelta
Deal found 2/21$288
This FlightHub deal was found by Cheapflights users on 2/22. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 3/12:46 pmSNA - ORD
2 stops18h 56mSpirit Airlines
dom. 3/97:47 amORD - SNA
1 stop28h 10mSpirit Airlines
Deal found 2/22$289
This Justfly.com deal was found by Cheapflights users on 2/22. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 3/304:43 pmSNA - ORD
2 stops18h 10mMultiple Airlines
dom. 4/66:45 amORD - SNA
1 stop6h 50mMultiple Airlines
Deal found 2/22$293
This Delta deal was found by Cheapflights users on 2/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 3/67:10 amLGB - ORD
1 stop9h 13mDelta
mar. 3/117:45 amORD - LGB
1 stop6h 45mDelta
Deal found 2/20$297
This American Airlines deal was found by Cheapflights users on 2/22. 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.
mié. 4/27:45 amSNA - ORD
Nonstop3h 55mAmerican Airlines
dom. 4/68:10 amORD - SNA
Nonstop4h 34mAmerican Airlines
Deal found 2/22$303
This Frontier deal was found by Cheapflights users on 2/22. 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. 2/2812:20 pmSNA - ORD
1 stop10h 24mFrontier
mié. 3/56:50 amORD - SNA
1 stop6h 40mFrontier
Deal found 2/22$310
This Delta deal was found by Cheapflights users on 2/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 3/1911:18 amSNA - STL
2 stops10h 08mDelta
vie. 3/214:45 pmSTL - SNA
1 stop7h 41mDelta
Deal found 2/20$314
This United Airlines deal was found by Cheapflights users on 2/22. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 4/226:28 pmSNA - PIA
2 stops13h 44mUnited Airlines
mié. 4/308:50 amPIA - SNA
2 stops12h 54mUnited Airlines
Deal found 2/22$329

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 febrero 23, 2025.

Fly from

Orange County

Fly to

Illinois

Route

Depart

Return

Price

Santa AnaSt. Louis

SNA - STL

SNASTL

Santa Ana J. Wayne/Orange Cnty

jue. 4/10

12:25 pm-9:06 am

1 stop18h 41m

Lambert-St Louis

sáb. 4/19

6:51 pm-11:35 am

1 stop18h 44m

$126

Santa AnaPeoria

SNA - PIA

SNAPIA

Santa Ana J. Wayne/Orange Cnty

mar. 4/22

7:45 am-4:45 pm

1 stop7h 00m

Greater Peoria

mié. 4/30

6:33 am-11:33 am

1 stop7h 00m

$229

Long BeachChicago

LGB - MDW

LGBMDW

Long Beach Municipal

lun. 3/10

1:30 pm-7:20 pm

Nonstop3h 50m

Chicago Midway

mié. 3/12

9:55 am-12:25 pm

Nonstop4h 30m

$277

Santa AnaChicago

SNA - MDW

SNAMDW

Santa Ana J. Wayne/Orange Cnty

vie. 4/18

11:00 am-7:41 pm

1 stop6h 41m

Chicago Midway

lun. 4/21

6:45 am-11:35 am

1 stop6h 50m

$283

Santa AnaChicago

SNA - MDW

SNAMDW

Santa Ana J. Wayne/Orange Cnty

lun. 3/24

6:57 pm-8:45 am

2 stops11h 48m

Chicago Midway

jue. 3/27

12:51 pm-7:47 pm

1 stop8h 56m

$288

Santa AnaChicago

SNA - ORD

SNAORD

Santa Ana J. Wayne/Orange Cnty

vie. 3/21

3:33 pm-12:53 pm

2 stops19h 20m

Chicago O'Hare Intl

vie. 3/28

6:30 am-11:30 am

1 stop7h 00m

$289

Santa AnaChicago

SNA - ORD

SNAORD

Santa Ana J. Wayne/Orange Cnty

jue. 3/20

3:33 pm-12:53 pm

2 stops19h 20m

Chicago O'Hare Intl

lun. 3/24

8:09 am-9:28 pm

1 stop15h 19m

$290

Santa AnaChicago

SNA - ORD

SNAORD

Santa Ana J. Wayne/Orange Cnty

vie. 6/6

11:39 am-12:08 am

1 stop10h 29m

Chicago O'Hare Intl

vie. 6/13

1:29 pm-6:33 pm

1 stop7h 04m

$292

Long BeachChicago

LGB - ORD

LGBORD

Long Beach Municipal

jue. 3/6

7:10 am-6:23 pm

1 stop9h 13m

Chicago O'Hare Intl

mar. 3/11

7:45 am-12:30 pm

1 stop6h 45m

$297

Santa AnaChicago

SNA - ORD

SNAORD

Santa Ana J. Wayne/Orange Cnty

mié. 4/2

7:45 am-1:40 pm

Nonstop3h 55m

Chicago O'Hare Intl

dom. 4/6

8:10 am-10:44 am

Nonstop4h 34m

$303

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/22

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 $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 febrero 23, 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 febrero 23, 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 febrero 23, 2025.
See what other customers who have flown with Southwest, Alaska Airlines 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.
Southwest
8.1
Very good
4,395 reviews

Food

7.1

Overall

8.1

Crew

8.7

Boarding

8.2

Comfort

8.1

Entertainment

7.6

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Southwest
8.1
Very good
4,395 reviews
Southwest
8.1
Very good
4,395 reviews

Food

7.1

Overall

8.1

Crew

8.7

Boarding

8.2

Comfort

8.1

Entertainment

7.6

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Alaska Airlines
8.0
Very good
9,706 reviews
Southwest
8.1
Very good
4,395 reviews

Food

7.1

Overall

8.1

Crew

8.7

Boarding

8.2

Comfort

8.1

Entertainment

7.6

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Delta
8.0
Very good
8,203 reviews
Southwest
8.1
Very good
4,395 reviews

Food

7.1

Overall

8.1

Crew

8.7

Boarding

8.2

Comfort

8.1

Entertainment

7.6

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Hawaiian Airlines
7.9
Good
2,314 reviews
Southwest
8.1
Very good
4,395 reviews

Food

7.1

Overall

8.1

Crew

8.7

Boarding

8.2

Comfort

8.1

Entertainment

7.6

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

United Airlines
7.4
Good
8,754 reviews
Southwest
8.1
Very good
4,395 reviews

Food

7.1

Overall

8.1

Crew

8.7

Boarding

8.2

Comfort

8.1

Entertainment

7.6

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

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 $65. Spirit Airlines flights start at $119 while deals on Allegiant Air start at $130 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 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 febrero 23, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$101Average$249FlexibilityNo cancel feeOn-time65%
FrontierCheapest$110Average$216FlexibilityNo cancel feeOn-time62%
DeltaCheapest$199Average$470FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$288Average$526FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$292Average$549FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$308Average$378FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$430Average$470FlexibilityNo cancel feeOn-time63%
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