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Cheap flights from Illinois to Orange County from $92

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to Orange County departing on 1/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Illinois to Orange County

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
1:07 pm - 8:57 pm
STL
-
SNA
9h 50m1 stop
Multiple Airlines Logo
6:45 am - 9:14 pm
SNA
-
STL
12h 29m1 stop
$145Multiple Airlines
Mon, Jan 12 - Fri, Jan 16
Multiple Airlines Logo
1:07 pm - 7:18 pm
STL
-
SNA
8h 11m1 stop
Multiple Airlines Logo
6:45 am - 9:14 pm
SNA
-
STL
12h 29m1 stop
$146Multiple Airlines
Mon, Jan 12 - Fri, Jan 16
Frontier Logo
1:07 pm - 7:18 pm
STL
-
SNA
8h 11m1 stop
Frontier Logo
3:55 pm - 2:48 pm
SNA
-
STL
20h 53m1 stop
$150Frontier
Mon, Jan 12 - Tue, Jan 13
Frontier Logo
1:07 pm - 7:18 pm
STL
-
SNA
8h 11m1 stop
Frontier Logo
3:55 pm - 2:48 pm
SNA
-
STL
20h 53m1 stop
$151Frontier
Mon, Jan 12 - Tue, Jan 13
American Airlines Logo
7:30 pm - 10:01 pm
ORD
-
SNA
4h 31mnonstop
American Airlines Logo
1:54 pm - 8:08 pm
SNA
-
ORD
4h 14mnonstop
$269American Airlines
Fri, Jan 16 - Wed, Jan 21
United Airlines Logo
7:48 pm - 10:24 pm
ORD
-
SNA
4h 36mnonstop
United Airlines Logo
8:00 am - 5:06 pm
SNA
-
ORD
7h 06m1 stop
$275United Airlines
Tue, Jan 20 - Tue, Jan 27
United Airlines Logo
7:44 pm - 10:30 pm
ORD
-
SNA
4h 46mnonstop
United Airlines Logo
3:25 pm - 12:26 am
SNA
-
ORD
7h 01m1 stop
$279United Airlines
Thu, Feb 19 - Mon, Feb 23
Southwest Logo
12:50 pm - 5:40 pm
MDW
-
SNA
6h 50m1 stop
Southwest Logo
8:25 am - 5:40 pm
SNA
-
MDW
7h 15m1 stop
$284Southwest
Sun, Feb 1 - Sun, Feb 8
Southwest Logo
5:05 am - 11:10 am
MDW
-
SNA
8h 05m1 stop
Southwest Logo
11:00 am - 7:55 pm
SNA
-
MDW
6h 55m1 stop
$289Southwest
Mon, Jan 12 - Wed, Jan 14
American Airlines Logo
7:00 am - 2:09 pm
PIA
-
SNA
9h 09m1 stop
American Airlines Logo
11:41 am - 8:24 pm
SNA
-
PIA
6h 43m1 stop
$309American Airlines
Sat, Feb 7 - Sat, Feb 14

Frontier flights from Illinois to Orange County

Our best Frontier deals on Illinois to Orange County flight tickets
Frontier
Jan 12
STL1:07 pmLambert-St Louis
8h 11m
1 stop
SNA7:18 pmSanta Ana J. Wayne/Orange Cnty
Jan 13
SNA3:55 pmSanta Ana J. Wayne/Orange Cnty
20h 53m
1 stop
STL2:48 pmLambert-St Louis
$150
Find similar
Frontier
Jan 12
STL1:07 pmLambert-St Louis
8h 11m
1 stop
SNA7:18 pmSanta Ana J. Wayne/Orange Cnty
Jan 13
SNA3:55 pmSanta Ana J. Wayne/Orange Cnty
20h 53m
1 stop
STL2:48 pmLambert-St Louis
$151
Find similar
Frontier
Jan 11
STL9:46 pmLambert-St Louis
17h 00m
1 stop
SNA12:46 pmSanta Ana J. Wayne/Orange Cnty
Jan 19
SNA10:30 amSanta Ana J. Wayne/Orange Cnty
7h 38m
1 stop
STL8:08 pmLambert-St Louis
$159
Find similar

American Airlines flights from Illinois to Orange County

Our best American Airlines deals on Illinois to Orange County flight tickets
American Airlines
Jan 16
ORD7:30 pmChicago O'Hare Intl
4h 31m
SNA10:01 pmSanta Ana J. Wayne/Orange Cnty
Jan 21
SNA1:54 pmSanta Ana J. Wayne/Orange Cnty
4h 14m
ORD8:08 pmChicago O'Hare Intl
$269
Find similar
American Airlines
Jan 16
ORD7:30 pmChicago O'Hare Intl
4h 31m
SNA10:01 pmSanta Ana J. Wayne/Orange Cnty
Jan 20
SNA12:38 pmSanta Ana J. Wayne/Orange Cnty
9h 45m
1 stop
ORD12:23 amChicago O'Hare Intl
$297
Find similar
American Airlines
Feb 7
PIA7:00 amGreater Peoria
9h 09m
1 stop
SNA2:09 pmSanta Ana J. Wayne/Orange Cnty
Feb 14
SNA11:41 amSanta Ana J. Wayne/Orange Cnty
6h 43m
1 stop
PIA8:24 pmGreater Peoria
$309
Find similar

momondo Fare Finder

 
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, momondo users made 832,500 searches. Data last updated December 22, 2025.
Use the filters below to find and compare flights from Illinois to Orange County that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisSanta Ana

STL - SNA

STLSNA

Lambert-St Louis

Mon 1/12

1:07 pm-8:57 pm

1 stop9h 50m

Santa Ana J. Wayne/Orange Cnty

Fri 1/16

6:45 am-9:14 pm

1 stop12h 29m

$145

St. LouisSanta Ana

STL - SNA

STLSNA

Lambert-St Louis

Mon 1/12

1:07 pm-7:18 pm

1 stop8h 11m

Santa Ana J. Wayne/Orange Cnty

Fri 1/16

6:45 am-9:14 pm

1 stop12h 29m

$146

St. LouisSanta Ana

STL - SNA

STLSNA

Lambert-St Louis

Mon 1/12

1:07 pm-7:18 pm

1 stop8h 11m

Santa Ana J. Wayne/Orange Cnty

Tue 1/13

3:55 pm-2:48 pm

1 stop20h 53m

$150

St. LouisSanta Ana

STL - SNA

STLSNA

Lambert-St Louis

Mon 1/12

1:07 pm-7:18 pm

1 stop8h 11m

Santa Ana J. Wayne/Orange Cnty

Tue 1/13

3:55 pm-2:48 pm

1 stop20h 53m

$151

ChicagoSanta Ana

ORD - SNA

ORDSNA

Chicago O'Hare Intl

Fri 1/16

7:30 pm-10:01 pm

Nonstop4h 31m

Santa Ana J. Wayne/Orange Cnty

Wed 1/21

1:54 pm-8:08 pm

Nonstop4h 14m

$269

ChicagoSanta Ana

ORD - SNA

ORDSNA

Chicago O'Hare Intl

Tue 1/20

7:48 pm-10:24 pm

Nonstop4h 36m

Santa Ana J. Wayne/Orange Cnty

Tue 1/27

8:00 am-5:06 pm

1 stop7h 06m

$275

ChicagoSanta Ana

ORD - SNA

ORDSNA

Chicago O'Hare Intl

Thu 2/19

7:44 pm-10:30 pm

Nonstop4h 46m

Santa Ana J. Wayne/Orange Cnty

Mon 2/23

3:25 pm-12:26 am

1 stop7h 01m

$279

ChicagoSanta Ana

MDW - SNA

MDWSNA

Chicago Midway

Sun 2/1

12:50 pm-5:40 pm

1 stop6h 50m

Santa Ana J. Wayne/Orange Cnty

Sun 2/8

8:25 am-5:40 pm

1 stop7h 15m

$284

ChicagoSanta Ana

MDW - SNA

MDWSNA

Chicago Midway

Mon 1/12

5:05 am-11:10 am

1 stop8h 05m

Santa Ana J. Wayne/Orange Cnty

Wed 1/14

11:00 am-7:55 pm

1 stop6h 55m

$289

PeoriaSanta Ana

PIA - SNA

PIASNA

Greater Peoria

Sat 2/7

7:00 am-2:09 pm

1 stop9h 09m

Santa Ana J. Wayne/Orange Cnty

Sat 2/14

11:41 am-8:24 pm

1 stop6h 43m

$309

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 Orange County from

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

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 Orange County?

The cheapest month to fly to Orange County from Illinois is in September. Flight prices, which tend to average around $227, are often lower during this time because this is during the off-season. If you aren’t able to travel to Orange County during the month of September, then flying in August is also cheap. Prices for this month can be found on momondo for an average of $243.

What is the cheapest day to depart on your flight to Orange County?

On average, the least expensive day to fly to Orange County from Illinois is on a Friday. momondo users have found tickets for Friday departures for as low as $330. However, this price may fluctuate depending on the airline, the season, and holidays. If your travel schedule is flexible, try to avoid departing on a Monday because tickets tend to average around $487. These prices are subject to change though, so be sure to set up a Price Alert for flights to Orange County.

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

According to our data, the cheapest time of day to fly to Orange County is in the morning. momondo users have found flights departing from Illinois to Orange County in the morning for as low as $316. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $798 on average. Flights to Orange County from Illinois in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.

What is the cheapest Illinois to Orange County flight route?

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

How far in advance should I book a flight to Orange County?

You are more likely to see cheaper flights to Orange County from Illinois when booking weeks ahead of your departure date. In general, you can expect to find flights to Orange County for around $271 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Orange County from Illinois for as low as $222 on momondo.

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

There are 4 cabin classes available to choose from on Illinois to Orange County 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 Illinois to Orange County flights?

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

Cheap Illinois to Orange County flight deals and tips

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

Fastest flight time

4h 15m

Direct flights

Every day

Airports in Orange County

2 airports
The fastest flight from Illinois to Orange County takes 4h 15m
Direct flights go from Illinois to Orange County every day.
There are 2 airports in Orange County. From Illinois there are direct flights to Long Beach Municipal (LGB), Santa Ana J. Wayne/Orange Cnty (SNA).
Search flight deals

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

    Prices for flights from Illinois to Orange County are updated daily.

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

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Illinois to Orange County.

  • What documentation or ID do you need to fly to Orange County?

    The necessary travel and health documents for your Orange County trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

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

Best airlines flying from Illinois to Orange County

Compare and see reviews for airlines that fly from Illinois to Orange County with momondo
Airline
Rating
Free Cancellation
Price
Spirit AirlinesPriceFrom $85Free CancellationRating
6.3
8,193 reviews
Search Spirit Airlines flights
FrontierPriceFrom $110Free CancellationRating
5.8
3,078 reviews
Search Frontier flights
American AirlinesPriceFrom $234Free CancellationRating
7.2
11,051 reviews
Search American Airlines flights
United AirlinesPriceFrom $269Free CancellationRating
7.4
9,102 reviews
Search United Airlines flights
SouthwestPriceFrom $288Free CancellationRating
8.0
4,254 reviews
Search Southwest flights
Alaska AirlinesPriceFrom $336Free CancellationRating
8.0
11,496 reviews
Search Alaska Airlines flights

Why use momondo?

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

It is quick and easy to find Illinois to Orange County flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Orange County that suits you.

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

Yes. momondo allows you to filter the results for Illinois to Orange County flights to just show those with flexible booking policies.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Illinois to Orange County.

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

If you are not ready to book a flight from Illinois to Orange County now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Orange County and let you know when they change.

An easier way to manage your Orange County trip

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