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$129+ Cheap flights from San José (SJO) 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 2/11. Fares are subject to change and may not be available on all flights or dates of travel.
SJO — ORD
Dec 13 — Dec 201
Sat 12/13
Sat 12/20
1 adult, Economy
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Find flight deals from San José to Illinois

Cheapest flights from San José to Illinois
Explore the most affordable flight options available from San José to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 13, 2025.

This Kiwi.com deal was found by Cheapflights users on 11/11. 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.
Sat 12/61:31 pmSJO - ORD
1 stop10h 38mSpirit Airlines
Wed 12/105:00 amORD - SJO
1 stop7h 25mSpirit Airlines
Deal found 11/11$245
This Expedia deal was found by Cheapflights users on 11/11. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/61:31 pmSJO - ORD
1 stop10h 38mSpirit Airlines
Tue 12/95:00 amORD - SJO
1 stop7h 25mSpirit Airlines
Deal found 11/11$250
This Kiwi.com deal was found by Cheapflights users on 11/12. 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.
Mon 12/151:31 pmSJO - ORD
1 stop21h 37mMultiple Airlines
Thu 1/88:35 amORD - SJO
2 stops27h 47mMultiple Airlines
Deal found 11/12$252
This OneTravel deal was found by Cheapflights users on 11/11. 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 OneTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/51:31 pmSJO - ORD
1 stop10h 38mSpirit Airlines
Wed 12/103:26 pmORD - SJO
1 stop20h 59mSpirit Airlines
Deal found 11/11$253
This Kiwi.com deal was found by Cheapflights users on 11/11. 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.
Wed 12/241:31 pmSJO - ORD
1 stop25h 31mMultiple Airlines
Tue 1/63:26 pmORD - SJO
1 stop20h 59mMultiple Airlines
Deal found 11/11$254
This Kiwi.com deal was found by Cheapflights users on 11/12. 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.
Tue 12/161:31 pmSJO - ORD
1 stop10h 38mMultiple Airlines
Tue 1/611:59 amORD - SJO
2 stops23h 43mMultiple Airlines
Deal found 11/12$255
This Kiwi.com deal was found by Cheapflights users on 11/12. 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.
Tue 12/161:31 pmSJO - ORD
1 stop10h 38mSpirit Airlines
Tue 1/63:26 pmORD - SJO
1 stop20h 59mSpirit Airlines
Deal found 11/12$258
This OneTravel deal was found by Cheapflights users on 11/13. 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 OneTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/1712:39 pmSJO - ORD
2 stops11h 30mSpirit Airlines
Sun 1/113:25 pmORD - SJO
2 stops20h 12mSpirit Airlines
Deal found 11/13$260
This Kiwi.com deal was found by Cheapflights users on 11/12. 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.
Tue 12/161:31 pmSJO - ORD
1 stop10h 38mMultiple Airlines
Wed 1/76:05 pmORD - SJO
2 stops17h 20mMultiple Airlines
Deal found 11/12$263
This Kiwi.com deal was found by Cheapflights users on 11/12. 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.
Tue 12/161:31 pmSJO - ORD
1 stop10h 38mMultiple Airlines
Thu 1/88:27 pmORD - SJO
1 stop15h 10mMultiple Airlines
Deal found 11/12$266
This Kiwi.com deal was found by Cheapflights users on 11/12. 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.
Mon 12/12:43 pmSJO - MDW
1 stop18h 34mMultiple Airlines
Mon 12/83:10 pmMDW - SJO
1 stop20h 32mMultiple Airlines
Deal found 11/12$280
This eDestinos deal was found by Cheapflights users on 11/12. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/222:47 pmSJO - STL
1 stop23h 42mMultiple Airlines
Fri 11/284:13 pmSTL - SJO
1 stop23h 07mMultiple Airlines
Deal found 11/12$285

Cheap flight deals from San José to Illinois

Keep the following information in mind while searching for San José to Illinois flight deals. Data was last updated November 13, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$245
(Kiwi.com)

One-way from

$129
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$429

Good round-trip deal

$325 or less

Good one-way deal

$175 or less
Provider with most accurate pricing for San José Juan Santamaria Intl-Chicago (CHI) flight deals.
Search Deals
Provider most trusted by Cheapflights users for San José Juan Santamaria Intl-Chicago (CHI) flights.
Search Deals
From San José Juan Santamaria Intl to Illinois
Search Deals
One-way flight from San José Juan Santamaria Intl to Illinois
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($20 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals
Price to beat on a round-trip flight from San José Juan Santamaria Intl to Illinois.
Search Deals
Price to beat on a one-way flight from San José Juan Santamaria Intl to Illinois.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from San José 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 November 13, 2025.
Use the filters below to find and compare flights from San José to Illinois that are best for you.

Fly from

San José

Fly to

Illinois

Route

Depart

Return

Price

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Sat 11/22

2:47 pm-2:29 pm

1 stop23h 42m

Lambert-St Louis

Fri 11/28

4:13 pm-3:20 pm

1 stop23h 07m

$285

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Mon 2/2

7:00 am-11:39 pm

1 stop16h 39m

Lambert-St Louis

Mon 2/9

7:10 am-10:15 pm

1 stop15h 05m

$303

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Sat 1/31

6:30 am-10:00 pm

1 stop15h 30m

Lambert-St Louis

Mon 2/9

6:40 pm-1:15 pm

2 stops18h 35m

$303

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Wed 2/4

6:30 am-10:58 pm

2 stops16h 28m

Lambert-St Louis

Wed 2/11

6:00 am-6:16 pm

1 stop12h 16m

$303

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Tue 2/3

7:00 am-8:39 pm

1 stop13h 39m

Lambert-St Louis

Mon 2/9

9:59 am-10:15 pm

1 stop12h 16m

$303

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Tue 2/3

6:30 am-3:52 pm

1 stop9h 22m

Lambert-St Louis

Sun 2/8

6:40 pm-1:15 pm

2 stops18h 35m

$303

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Sun 2/1

7:00 am-11:39 pm

1 stop16h 39m

Lambert-St Louis

Mon 2/9

7:10 am-10:15 pm

1 stop15h 05m

$303

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Tue 2/3

6:30 am-10:58 pm

2 stops16h 28m

Lambert-St Louis

Tue 2/10

6:40 pm-6:16 pm

2 stops23h 36m

$303

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Thu 2/5

8:45 am-10:00 pm

1 stop13h 15m

Lambert-St Louis

Wed 2/11

6:00 am-6:16 pm

1 stop12h 16m

$303

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Fri 1/30

6:30 am-10:58 pm

2 stops16h 28m

Lambert-St Louis

Sat 2/7

4:49 pm-12:56 pm

1 stop20h 07m

$303

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/12

Showing 1-10 of 58 results
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Best time to book a flight from San José to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from San José 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 San José to Illinois

What is the cheapest month to book a flight from San José to Illinois?

Currently, October is the cheapest month in which you can book a flight from San José to Illinois (average of $195). Flying from San José to Illinois in March is currently the most expensive (average of $351). 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 SJO to IL?

Find hourly flight availability from San José 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 November 13, 2025.

A simple way to save on the total cost of your ticket is to fly from San José to Illinois in the afternoon. If you’re flexible enough to do this you can expect to save up to 39% on your trip compared to booking a flight in the morning.

Weekly flight availability from San José to Illinois

Explore weekly flight availability from San José 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 November 13, 2025.

The most flights from SJO to USIL are scheduled on a Monday (1 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (1 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 November 13, 2025.
Peruse reviews from past customers who have flown with Copa Airlines, United Airlines, and American Airlines from San José to Illinois to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Copa Airlines
7.6
Good
1,565 reviews

Crew

8.1

Overall

7.6

Food

6.9

Comfort

7.4

Boarding

7.8

Entertainment

6.8

Reviews

1 / 20
4.0
Okay

Juan Pablo,Sep 2025

PTY - VVI

not a good expirience, the plane was packed, the seats wear very unconftrable, coudent conect with the entratainmente service on the plane, the onboarding was in charge of a very angry lady i really had a unplesent trip
Copa Airlines
7.6
Good
1,565 reviews
Copa Airlines
7.6
Good
1,565 reviews

Crew

8.1

Overall

7.6

Food

6.9

Comfort

7.4

Boarding

7.8

Entertainment

6.8

Reviews

1 / 20
4.0
Okay

Juan Pablo,Sep 2025

PTY - VVI

not a good expirience, the plane was packed, the seats wear very unconftrable, coudent conect with the entratainmente service on the plane, the onboarding was in charge of a very angry lady i really had a unplesent trip
United Airlines
7.4
Good
9,015 reviews
Copa Airlines
7.6
Good
1,565 reviews

Crew

8.1

Overall

7.6

Food

6.9

Comfort

7.4

Boarding

7.8

Entertainment

6.8

Reviews

1 / 20
4.0
Okay

Juan Pablo,Sep 2025

PTY - VVI

not a good expirience, the plane was packed, the seats wear very unconftrable, coudent conect with the entratainmente service on the plane, the onboarding was in charge of a very angry lady i really had a unplesent trip
American Airlines
7.2
Good
11,050 reviews
Copa Airlines
7.6
Good
1,565 reviews

Crew

8.1

Overall

7.6

Food

6.9

Comfort

7.4

Boarding

7.8

Entertainment

6.8

Reviews

1 / 20
4.0
Okay

Juan Pablo,Sep 2025

PTY - VVI

not a good expirience, the plane was packed, the seats wear very unconftrable, coudent conect with the entratainmente service on the plane, the onboarding was in charge of a very angry lady i really had a unplesent trip
Avianca
6.6
Okay
2,475 reviews
Copa Airlines
7.6
Good
1,565 reviews

Crew

8.1

Overall

7.6

Food

6.9

Comfort

7.4

Boarding

7.8

Entertainment

6.8

Reviews

1 / 20
4.0
Okay

Juan Pablo,Sep 2025

PTY - VVI

not a good expirience, the plane was packed, the seats wear very unconftrable, coudent conect with the entratainmente service on the plane, the onboarding was in charge of a very angry lady i really had a unplesent trip
Spirit Airlines
6.3
Okay
8,139 reviews
Copa Airlines
7.6
Good
1,565 reviews

Crew

8.1

Overall

7.6

Food

6.9

Comfort

7.4

Boarding

7.8

Entertainment

6.8

Reviews

1 / 20
4.0
Okay

Juan Pablo,Sep 2025

PTY - VVI

not a good expirience, the plane was packed, the seats wear very unconftrable, coudent conect with the entratainmente service on the plane, the onboarding was in charge of a very angry lady i really had a unplesent trip

Related info for your journey

Find useful and relevant information for your journey from San José 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 San José to Illinois?

    For a flight from San José to Illinois, you will be flying from Juan Santamaria Intl. San José Juan Santamaria Intl (SJO) is just 8.8 mi from the center of the city.

  • How long is the flight from San José to Illinois?

    There are many flights that can get you from San José to Illinois in 15h 30m. Fly via Delta, United Airlines, or Copa Airlines to get the fastest option. The distance between San José and Illinois is about 2022 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from San José to Illinois one-way?

    One-way options have recently been found by users for as low as $134 on Frontier. Other airlines that offer cheap prices include Spirit Airlines from $138 and Delta from $176 one-way.

  • What are the most popular routes from San José to Illinois?

    The most popular route from San José to Illinois is San José Juan Santamaria Intl - Chicago O'Hare Intl. You may also consider San José Juan Santamaria Intl - Chicago Midway or San José Juan Santamaria Intl - Lambert-St Louis.

  • What are the cheapest flights from San José to Illinois?

    The cheapest flight price from San José to Illinois is $145. On average you can expect to pay $351. The most popular route, (San José Juan Santamaria Intl - Chicago O'Hare Intl), can usually be booked for $227.

  • Can I find deals for flights from San José to Illinois that include hotel bookings?

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

  • How can I find direct flights from San José to Illinois?

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

  • Can I find deals for business class flights from San José to Illinois?

    Yes. Cheapflights offers flight deals from San José 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 San José to Illinois?

    Currently, October is the cheapest month in which you can book a flight from San José to Illinois (average of $195). Flying from San José to Illinois in March is currently the most expensive (average of $351). 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 San José to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
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San José to San Francisco flights
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San José to New Orleans flights
San José to Sky Harbor Intl flights
Liberia to John F Kennedy Intl flights
San José to Philadelphia flights
San José to San Diego flights
Liberia to Newark flights
San José to Nashville flights
San José to Austin flights
Liberia to Miami flights
San José to Love Field flights
San José to San Antonio flights
San José to Honolulu flights
Liberia to Atlanta flights
San José to Indianapolis flights
Liberia to Hobby flights
Liberia to Orlando flights
Liberia to LaGuardia flights
San José to San Jose flights
San José to Oakland flights
Liberia to George Bush Intcntl flights
Liberia to Los Angeles flights

Top 6 airlines flying from San José to Illinois

Discover the top 6 airlines that operate flights from San José 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 November 13, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$230Average$398FlexibilityNo cancel feeOn-time65%
AviancaCheapest$249Average$485FlexibilityNo cancel feeOn-time71%
Copa AirlinesCheapest$314Average$458FlexibilityNo cancel feeOn-time70%
American AirlinesCheapest$324Average$463FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$425Average$525FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$434Average$573FlexibilityNo cancel feeOn-time69%

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