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Cheap flights from Orange County to Illinois from $43

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Orange County to Illinois departing on 9/16. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Orange County to Illinois

Cheap round-trip flights

Spirit Airlines Logo
6:45 am - 9:32 pmSNA-ORD
12h 47m1 stop
Spirit Airlines Logo
12:46 pm - 10:05 pmORD-SNA
11h 19m1 stop
$111Spirit Airlines
Find Deal
Tue, Sep 16 - Sat, Sep 20
Spirit Airlines Logo
2:15 pm - 1:09 pmSNA-ORD
20h 54m2 stops
Spirit Airlines Logo
12:46 pm - 10:05 pmORD-SNA
11h 19m1 stop
$125Spirit Airlines
Find Deal
Tue, Sep 16 - Sat, Sep 20
Southwest Logo
9:05 am - 5:00 pmSNA-MDW
5h 55m1 stop
Southwest Logo
12:55 pm - 5:45 pmMDW-SNA
6h 50m1 stop
$283Southwest
Find Deal
Wed, Oct 1 - Mon, Oct 6
Southwest Logo
6:45 am - 4:35 pmSNA-MDW
7h 50m2 stops
Southwest Logo
6:10 am - 9:50 amMDW-SNA
5h 40m1 stop
$288Southwest
Find Deal
Sat, Sep 27 - Wed, Oct 1
American Airlines Logo
11:35 am - 8:24 pmSNA-MLI
6h 49m1 stop
American Airlines Logo
6:30 am - 10:52 amMLI-SNA
6h 22m1 stop
$289American Airlines
Find Deal
Fri, Sep 26 - Sat, Oct 4
American Airlines Logo
12:44 pm - 11:18 pmSNA-STL
8h 34m1 stop
American Airlines Logo
5:17 am - 9:41 amSTL-SNA
6h 24m1 stop
$338American Airlines
Find Deal
Tue, Oct 21 - Thu, Nov 20
United Airlines Logo
8:40 am - 9:05 pmSNA-MLI
10h 25m2 stops
United Airlines Logo
3:55 pm - 10:17 pmMLI-SNA
8h 22m1 stop
$384United Airlines
Find Deal
Tue, Oct 21 - Tue, Oct 28
United Airlines Logo
6:50 am - 9:05 pmSNA-MLI
12h 15m2 stops
United Airlines Logo
6:30 am - 5:13 pmMLI-SNA
12h 43m2 stops
$389United Airlines
Find Deal
Tue, Oct 21 - Sat, Oct 25
Alaska Airlines Logo
7:20 pm - 10:59 amSNA-MLI
13h 39m2 stops
Alaska Airlines Logo
11:29 am - 9:30 pmMLI-SNA
12h 01m2 stops
$439Alaska Airlines
Find Deal
Thu, Oct 23 - Fri, Oct 31
Alaska Airlines Logo
5:47 pm - 10:59 amSNA-MLI
15h 12m2 stops
Alaska Airlines Logo
11:29 am - 8:37 pmMLI-SNA
11h 08m2 stops
$464Alaska Airlines
Find Deal
Tue, Oct 21 - Wed, Oct 29

Spirit Airlines flights from Orange County to Illinois

Our best Spirit Airlines deals on Orange County to Illinois flight tickets
Spirit Airlines
Sep 16
SNA6:45 amSanta Ana J. Wayne/Orange Cnty
12h 47m
1 stop
ORD9:32 pmChicago O'Hare Intl
Sep 20
ORD12:46 pmChicago O'Hare Intl
11h 19m
1 stop
SNA10:05 pmSanta Ana J. Wayne/Orange Cnty
$111
Find similar
Spirit Airlines
Sep 16
SNA2:15 pmSanta Ana J. Wayne/Orange Cnty
20h 54m
2 stops
ORD1:09 pmChicago O'Hare Intl
Sep 20
ORD12:46 pmChicago O'Hare Intl
11h 19m
1 stop
SNA10:05 pmSanta Ana J. Wayne/Orange Cnty
$125
Find similar
Spirit Airlines
Sep 17
SNA6:45 amSanta Ana J. Wayne/Orange Cnty
12h 47m
1 stop
ORD9:32 pmChicago O'Hare Intl
Sep 20
ORD12:46 pmChicago O'Hare Intl
11h 19m
1 stop
SNA10:05 pmSanta Ana J. Wayne/Orange Cnty
$126
Find similar

Frontier flights from Orange County to Illinois

Our best Frontier deals on Orange County to Illinois flight tickets
Frontier
Sep 11
SNA11:52 amSanta Ana J. Wayne/Orange Cnty
10h 07m
1 stop
ORD11:59 pmChicago O'Hare Intl
Sep 17
ORD7:20 amChicago O'Hare Intl
6h 53m
1 stop
SNA12:13 pmSanta Ana J. Wayne/Orange Cnty
$152
Find similar
Frontier
Oct 23
SNA12:01 pmSanta Ana J. Wayne/Orange Cnty
10h 35m
1 stop
MDW12:36 amChicago Midway
Oct 26
MDW6:24 pmChicago Midway
18h 52m
1 stop
SNA11:16 amSanta Ana J. Wayne/Orange Cnty
$154
Find similar
Frontier
Sep 18
SNA2:24 pmSanta Ana J. Wayne/Orange Cnty
6h 16m
1 stop
ORD10:40 pmChicago O'Hare Intl
Sep 22
ORD6:00 amChicago O'Hare Intl
7h 07m
1 stop
SNA11:07 amSanta Ana J. Wayne/Orange Cnty
$160
Find similar

momondo 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, momondo users made 832,500 searches. Data last updated August 18, 2025.
Use the filters below to find and compare flights from Orange County to Illinois that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Santa AnaChicago

SNA - ORD

SNAORD

Santa Ana J. Wayne/Orange Cnty

Tue 9/16

6:45 am-9:32 pm

1 stop12h 47m

Chicago O'Hare Intl

Sat 9/20

12:46 pm-10:05 pm

1 stop11h 19m

$111

Santa AnaChicago

SNA - ORD

SNAORD

Santa Ana J. Wayne/Orange Cnty

Tue 9/16

2:15 pm-1:09 pm

2 stops20h 54m

Chicago O'Hare Intl

Sat 9/20

12:46 pm-10:05 pm

1 stop11h 19m

$125

Santa AnaChicago

SNA - MDW

SNAMDW

Santa Ana J. Wayne/Orange Cnty

Wed 10/1

9:05 am-5:00 pm

1 stop5h 55m

Chicago Midway

Mon 10/6

12:55 pm-5:45 pm

1 stop6h 50m

$283

Santa AnaChicago

SNA - MDW

SNAMDW

Santa Ana J. Wayne/Orange Cnty

Sat 9/27

6:45 am-4:35 pm

2 stops7h 50m

Chicago Midway

Wed 10/1

6:10 am-9:50 am

1 stop5h 40m

$288

Santa AnaMoline

SNA - MLI

SNAMLI

Santa Ana J. Wayne/Orange Cnty

Fri 9/26

11:35 am-8:24 pm

1 stop6h 49m

Moline Quad-City

Sat 10/4

6:30 am-10:52 am

1 stop6h 22m

$289

Santa AnaSt. Louis

SNA - STL

SNASTL

Santa Ana J. Wayne/Orange Cnty

Tue 10/21

12:44 pm-11:18 pm

1 stop8h 34m

Lambert-St Louis

Thu 11/20

5:17 am-9:41 am

1 stop6h 24m

$338

Santa AnaMoline

SNA - MLI

SNAMLI

Santa Ana J. Wayne/Orange Cnty

Tue 10/21

8:40 am-9:05 pm

2 stops10h 25m

Moline Quad-City

Tue 10/28

3:55 pm-10:17 pm

1 stop8h 22m

$384

Santa AnaMoline

SNA - MLI

SNAMLI

Santa Ana J. Wayne/Orange Cnty

Tue 10/21

6:50 am-9:05 pm

2 stops12h 15m

Moline Quad-City

Sat 10/25

6:30 am-5:13 pm

2 stops12h 43m

$389

Santa AnaMoline

SNA - MLI

SNAMLI

Santa Ana J. Wayne/Orange Cnty

Thu 10/23

7:20 pm-10:59 am

2 stops13h 39m

Moline Quad-City

Fri 10/31

11:29 am-9:30 pm

2 stops12h 01m

$439

Santa AnaMoline

SNA - MLI

SNAMLI

Santa Ana J. Wayne/Orange Cnty

Tue 10/21

5:47 pm-10:59 am

2 stops15h 12m

Moline Quad-City

Wed 10/29

11:29 am-8:37 pm

2 stops11h 08m

$464

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Illinois from

How to get the cheapest flight ticket from Orange County to Illinois

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Illinois?

The cheapest month to fly to Illinois from Orange County is in February. Flight prices, which tend to average around $246, are often lower during this time because this is during the off-season. If you aren’t able to travel to Illinois during the month of February, then flying in May is also cheap. Prices for this month can be found on momondo for an average of $268.

What is the cheapest day to depart on your flight to Illinois?

The cheapest day to depart from Orange County to Illinois is on a Wednesday when prices can be found for as low as $427. Flights from Orange County to Illinois on a Monday will generally be more expensive and average around $564. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Illinois?

Our most recent data shows that the best time of day to fly to Illinois is in the evening. Flights from Orange County to Illinois during this time can be as low as $332. Flights in the morning are often more expensive with an average ticket price of $472.

What is the cheapest Orange County to Illinois flight route?

Fly from Santa Ana J. Wayne/Orange Cnty to Chicago O'Hare Intl for the best Orange County - Illinois flight prices

How far in advance should I book a flight to Illinois?

You are more likely to see cheaper flights to Illinois from Orange County when booking weeks ahead of your departure date. In general, you can expect to find flights to Illinois for around $300 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Illinois from Orange County for as low as $252 on momondo.

What cabin class options are available on Orange County to Illinois flights?

There are 4 cabin classes available to choose from on Orange County to Illinois flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Orange County to Illinois flights?

No. A direct flight is the cheapest option for a flight between Orange County to Illinois.

Cheap Orange County to Illinois flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Orange County to Illinois

Best Price Found

$43

Fastest flight time

3h 30m

Direct flights

Every day

Airports in Illinois

3 airports
The best one-way flight to Illinois from Orange County in the past 72 hours is $43. The best round-trip flight deal from Orange County to Illinois found on momondo in the last 72 hours is $111.
The fastest flight from Orange County to Illinois takes 3h 30m
Direct flights go from Orange County to Illinois every day.
There are 3 airports near Illinois: Chicago O'Hare Intl (ORD), Chicago Midway (MDW), Lambert-St Louis (STL)
Search flight deals

  • When did momondo last update prices for flights from Orange County to Illinois?

    Prices for flights from Orange County to Illinois were last updated today.

  • How many operators does momondo search for flights from Orange County to Illinois?

  • How old do you have to be to fly from Orange County to Illinois?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Orange County to Illinois.

  • What documentation or ID do you need to fly to Illinois?

    The travel and health documents you'll need for your trip to Illinois may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Illinois. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Orange County to Illinois?

Best airlines flying from Orange County to Illinois

Compare and see reviews for airlines that fly from Orange County to Illinois with momondo
Airline
Rating
Free Cancellation
Price
Spirit AirlinesPriceFrom $101Free CancellationRating
6.3
8,038 reviews
Search Spirit Airlines flights
FrontierPriceFrom $110Free CancellationRating
5.8
3,212 reviews
Search Frontier flights
Alaska AirlinesPriceFrom $190Free CancellationRating
8.0
10,000 reviews
Search Alaska Airlines flights
American AirlinesPriceFrom $269Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $271Free CancellationRating
7.4
8,925 reviews
Search United Airlines flights
SouthwestPriceFrom $313Free CancellationRating
8.0
4,246 reviews
Search Southwest flights

Why use momondo?

Why should I use momondo to find a flight deal from Orange County to Illinois?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Orange County to Illinois. momondo saves you time and could save you money on your trip.

Can I find flights from Orange County to Illinois with flexible booking policies on momondo?

Flights from Orange County to Illinois with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Orange County to Illinois?

momondo helps you find the best flight between Orange County and Illinois by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Orange County to Illinois right now. Can momondo alert me if prices change?

Price alerts on flights to Illinois from Orange County are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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