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$76+ Cheap flights from Santa Ana (SNA) 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 10/16. Fares are subject to change and may not be available on all flights or dates of travel.
SNA — ORD
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheap flight deals from Santa Ana to Illinois

Keep the following information in mind while searching for Santa Ana to Illinois flight deals. Data was last updated September 11, 2025.

Round-trip from

$159
(Kiwi.com)

One-way from

$76
(Kiwi.com)

Popular in

December

Cheapest in

February

Average price

$268

Good round-trip deal

$348 or less

Good one-way deal

$237 or less
From Santa Ana J. Wayne/Orange Cnty to Illinois
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One-way flight from Santa Ana J. Wayne/Orange Cnty to Illinois
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Highest demand for flights based on searches. 8% potential increase in price ($26 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($4 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from Santa Ana J. Wayne/Orange Cnty to Illinois.
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Price to beat on a one-way flight from Santa Ana J. Wayne/Orange Cnty to Illinois.
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Find flight deals from Santa Ana to Illinois

Cheapest flights from Santa Ana to Illinois
Explore the most affordable flight options available from Santa Ana to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This Kiwi.com deal was found by Cheapflights users on 9/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/21:00 pmSNA - STL
1 stop22h 53mMultiple Airlines
Tue 10/77:52 pmSTL - SNA
2 stops28h 11mMultiple Airlines
Deal found 9/9$159
This Kiwi.com deal was found by Cheapflights users on 9/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/112:58 pmSNA - STL
1 stop18h 08mFrontier
Sun 10/52:38 pmSTL - SNA
1 stop23h 37mFrontier
Deal found 9/9$163
This Frontier deal was found by Cheapflights users on 9/10. 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 10/242:35 pmSNA - STL
1 stop5h 39mFrontier
Mon 10/2712:38 pmSTL - SNA
1 stop8h 30mFrontier
Deal found 9/10$166
This Booking.com deal was found by Cheapflights users on 9/10. 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.
Fri 10/311:52 amSNA - STL
1 stop19h 14mFrontier
Sun 10/52:38 pmSTL - SNA
1 stop23h 37mFrontier
Deal found 9/10$178
This Kiwi.com deal was found by Cheapflights users on 9/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/98:09 pmSNA - STL
1 stop13h 34mMultiple Airlines
Tue 10/147:52 pmSTL - SNA
2 stops28h 11mMultiple Airlines
Deal found 9/9$182
This Kiwi.com deal was found by Cheapflights users on 9/11. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/36:45 amSNA - STL
1 stop11h 55mMultiple Airlines
Sun 10/52:38 pmSTL - SNA
1 stop23h 37mMultiple Airlines
Deal found 9/11$219
This Kiwi.com deal was found by Cheapflights users on 9/9. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/16:45 amSNA - STL
2 stops25h 09mMultiple Airlines
Sun 10/52:38 pmSTL - SNA
1 stop23h 37mMultiple Airlines
Deal found 9/9$233
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/168:09 pmSNA - STL
1 stop13h 34mMultiple Airlines
Sun 10/2611:32 amSTL - SNA
2 stops33h 42mMultiple Airlines
Deal found 9/10$236
This Booking.com deal was found by Cheapflights users on 9/8. 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.
Fri 9/268:38 pmSNA - STL
1 stop17h 25mFrontier
Sun 9/282:38 pmSTL - SNA
1 stop23h 37mFrontier
Deal found 9/8$245
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/186:45 amSNA - STL
1 stop7h 11mMultiple Airlines
Sun 10/2611:32 amSTL - SNA
2 stops33h 42mMultiple Airlines
Deal found 9/10$248
This United Airlines deal was found by Cheapflights users on 9/9. 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.
Fri 10/31:48 pmSNA - ORD
Nonstop4h 11mUnited Airlines
Tue 10/77:58 pmORD - SNA
Nonstop4h 32mUnited Airlines
Deal found 9/9$269
This CheapOair deal was found by Cheapflights users on 9/10. 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.
Fri 10/106:45 amSNA - ORD
2 stops11h 18mSpirit Airlines
Tue 10/146:40 amORD - SNA
1 stop14h 34mSpirit Airlines
Deal found 9/10$270

Cheapflights Fare Finder

 
Customize your flight search to find flights from Santa Ana 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 September 11, 2025.
Use the filters below to find and compare flights from Santa Ana to Illinois that are best for you.

Fly from

Santa Ana

Fly to

Illinois

Route

Depart

Return

Price

Santa AnaSt. Louis

SNA - STL

SNASTL

Santa Ana J. Wayne/Orange Cnty

Thu 10/16

8:09 pm-11:43 am

1 stop13h 34m

Lambert-St Louis

Sun 10/26

11:32 am-7:14 pm

2 stops33h 42m

$236

Santa AnaSt. Louis

SNA - STL

SNASTL

Santa Ana J. Wayne/Orange Cnty

Wed 10/1

11:42 am-8:15 pm

1 stop6h 33m

Lambert-St Louis

Wed 10/15

6:00 am-10:48 am

1 stop6h 48m

$259

Santa AnaSt. Louis

SNA - STL

SNASTL

Santa Ana J. Wayne/Orange Cnty

Wed 12/3

1:10 pm-9:35 pm

1 stop6h 25m

Lambert-St Louis

Fri 12/5

4:00 pm-9:05 pm

1 stop7h 05m

$268

Santa AnaChicago

SNA - ORD

SNAORD

Santa Ana J. Wayne/Orange Cnty

Wed 10/15

6:45 am-1:08 pm

Nonstop4h 23m

Chicago O'Hare Intl

Tue 10/21

4:20 pm-6:46 pm

Nonstop4h 26m

$269

Santa AnaChicago

SNA - ORD

SNAORD

Santa Ana J. Wayne/Orange Cnty

Sat 10/4

10:39 am-4:50 pm

Nonstop4h 11m

Chicago O'Hare Intl

Tue 10/7

7:58 pm-10:30 pm

Nonstop4h 32m

$269

Santa AnaChicago

SNA - ORD

SNAORD

Santa Ana J. Wayne/Orange Cnty

Fri 10/3

1:48 pm-7:59 pm

Nonstop4h 11m

Chicago O'Hare Intl

Tue 10/7

7:58 pm-10:30 pm

Nonstop4h 32m

$269

Santa AnaSt. Louis

SNA - STL

SNASTL

Santa Ana J. Wayne/Orange Cnty

Sat 10/18

6:45 am-3:56 pm

1 stop7h 11m

Lambert-St Louis

Sun 10/26

7:52 pm-11:16 am

1 stop17h 24m

$274

Santa AnaChicago

SNA - ORD

SNAORD

Santa Ana J. Wayne/Orange Cnty

Fri 10/10

1:48 pm-7:59 pm

Nonstop4h 11m

Chicago O'Hare Intl

Sat 10/25

5:01 am-9:17 am

1 stop6h 16m

$275

Santa AnaChicago

SNA - ORD

SNAORD

Santa Ana J. Wayne/Orange Cnty

Thu 10/16

6:24 pm-5:01 am

1 stop8h 37m

Chicago O'Hare Intl

Tue 10/21

2:04 pm-8:22 pm

1 stop8h 18m

$276

Santa AnaChicago

SNA - MDW

SNAMDW

Santa Ana J. Wayne/Orange Cnty

Thu 9/25

3:25 pm-12:05 am

1 stop6h 40m

Chicago Midway

Wed 10/1

8:25 am-1:50 pm

1 stop7h 25m

$276

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/9

Showing 1-10 of 60 results
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Best time to book a flight from Santa Ana to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from Santa Ana 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 Santa Ana to Illinois

What is the cheapest month to book a flight from Santa Ana to Illinois?

Currently, August is the cheapest month in which you can book a flight from Santa Ana to Illinois (average of $245). Flying from Santa Ana 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 SNA to IL?

Find hourly flight availability from Santa Ana 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 September 11, 2025.

When flying from Santa Ana to Illinois, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from Santa Ana to Illinois

Explore weekly flight availability from Santa Ana 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 September 11, 2025.

The most flights from SNA to USIL are scheduled on a Thursday (27 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (20 on average).

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 September 11, 2025.
Read through reviews of airlines operating flights from Santa Ana to Illinois, such as Alaska Airlines, United Airlines, and American Airlines. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Boarding

8.1

Entertainment

7.0

Overall

8.0

Food

7.1

Comfort

7.8

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Boarding

8.1

Entertainment

7.0

Overall

8.0

Food

7.1

Comfort

7.8

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
United Airlines
7.4
Good
8,937 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Boarding

8.1

Entertainment

7.0

Overall

8.0

Food

7.1

Comfort

7.8

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Boarding

8.1

Entertainment

7.0

Overall

8.0

Food

7.1

Comfort

7.8

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Spirit Airlines
6.3
Okay
8,023 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Boarding

8.1

Entertainment

7.0

Overall

8.0

Food

7.1

Comfort

7.8

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Frontier
5.8
Fair
3,177 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Boarding

8.1

Entertainment

7.0

Overall

8.0

Food

7.1

Comfort

7.8

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.

Related info for your journey

Find useful and relevant information for your journey from Santa Ana to Illinois. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Santa Ana to Illinois?

    Most people fly from Santa Ana J. Wayne/Orange Cnty (SNA) if they book a flight from Santa Ana to Illinois. Santa Ana J. Wayne/Orange Cnty is conveniently located just 4.8 mi from Santa Ana’s city center.

  • How long is the flight from Santa Ana to Illinois?

    There are many flights that can get you from Santa Ana to Illinois in 4h 23m. Fly via American Airlines, Southwest, or United Airlines to get the fastest option. There are 1721 mi between Santa Ana and Illinois. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from Santa Ana to Illinois one-way?

    For one-way options, check prices for Frontier. According to our data, you can fly for as low as $89. Users have also found prices from $116 and $121 on Spirit Airlines and Southwest, respectively.

  • What are the most popular routes from Santa Ana to Illinois?

    When deciding which route to take from Santa Ana to Illinois consider Santa Ana J. Wayne/Orange Cnty - Chicago O'Hare Intl, Santa Ana J. Wayne/Orange Cnty - Chicago Midway or Santa Ana J. Wayne/Orange Cnty - Lambert-St Louis as they are the most popular.

  • What are the most reliable airlines from Santa Ana to Illinois?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Santa Ana to Illinois on time: Brussels Airlines (90%), Emirates (87%), United Airlines (84%).

  • What are the cheapest flights from Santa Ana to Illinois?

    Looking for the cheapest flight from Santa Ana to Illinois? While on average our users pay $933, our data indicates the cheapest price to be $160. The most popular route (Santa Ana J. Wayne/Orange Cnty - Chicago O'Hare Intl), is priced around $120.

  • Can I find deals for flights from Santa Ana to Illinois that include hotel bookings?

    Yes. In addition to deals on Santa Ana to Illinois flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Santa Ana to Illinois?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Santa Ana to Illinois.

  • Can I find deals for business class flights from Santa Ana to Illinois?

    Yes. Cheapflights offers flight deals from Santa Ana 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 Santa Ana to Illinois?

    Currently, August is the cheapest month in which you can book a flight from Santa Ana to Illinois (average of $245). Flying from Santa Ana 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.

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Alternative routes for Santa Ana to Illinois

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Top 6 airlines flying from Santa Ana to Illinois

Discover the top 6 airlines that operate flights from Santa Ana 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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$110Average$283FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$116Average$198FlexibilityNo cancel feeOn-time65%
Alaska AirlinesCheapest$190Average$445FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$269Average$509FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$269Average$482FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$312Average$446FlexibilityNo cancel feeOn-time63%

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