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$146+ 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 4/30. Fares are subject to change and may not be available on all flights or dates of travel.
SJO — ORD
Apr 2 — Apr 91
Wed 4/2
Wed 4/9
1 adult, Economy
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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 March 28, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$299
(Cheapflightsfares)

One-way from

$146
(FlightHub)

Popular in

December

Cheapest in

August

Average price

$467

Good round-trip deal

$547 or less

Good one-way deal

$241 or less
Provider with most accurate pricing for San José Juan Santamaria Intl-Chicago (CHI) flight deals.
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Provider most trusted by Cheapflights users for San José Juan Santamaria Intl-Chicago (CHI) flights.
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From San José Juan Santamaria Intl to Illinois
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One-way flight from San José Juan Santamaria Intl to Illinois
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Highest demand for flights based on searches. 5% potential increase in price ($26 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($9 potential savings vs. average RT price).
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Average for round-trip flights in March 2025
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Price to beat on a round-trip flight from San José Juan Santamaria Intl to Illinois.
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Price to beat on a one-way flight from San José Juan Santamaria Intl to Illinois.
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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 March 28, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 3/28. 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.
Fri 5/912:28 pmSJO - ORD
2 stops10h 01mSpirit Airlines
Fri 5/164:35 pmORD - SJO
2 stops19h 58mSpirit Airlines
Deal found 3/28$299
This OneTravel deal was found by Cheapflights users on 3/28. 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.
Mon 9/222:48 pmSJO - ORD
1 stop13h 54mMultiple Airlines
Sat 9/271:40 amORD - SJO
1 stop13h 17mMultiple Airlines
Deal found 3/28$309
This Cheapflightsfares deal was found by Cheapflights users on 3/27. 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.
Tue 7/227:45 pmSJO - ORD
2 stops17h 40mAvianca
Wed 7/303:45 pmORD - SJO
1 stop8h 30mAvianca
Deal found 3/27$326
This Delta deal was found by Cheapflights users on 3/27. 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.
Tue 6/101:25 pmSJO - STL
1 stop9h 17mDelta
Tue 6/246:00 amSTL - SJO
1 stop7h 00mDelta
Deal found 3/27$328
This United Airlines deal was found by Cheapflights users on 3/27. 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.
Tue 5/275:30 amSJO - STL
2 stops32h 23mUnited Airlines
Tue 6/108:25 amSTL - SJO
1 stop26h 46mUnited Airlines
Deal found 3/27$335
This American Airlines deal was found by Cheapflights users on 3/27. 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.
Wed 6/116:18 amSJO - STL
2 stops13h 12mAmerican Airlines
Tue 6/246:00 amSTL - SJO
2 stops15h 09mAmerican Airlines
Deal found 3/27$342
This Kiwi.com deal was found by Cheapflights users on 3/27. 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 4/2611:35 amSJO - STL
1 stop11h 29mMultiple Airlines
Sat 5/35:45 pmSTL - SJO
1 stop17h 39mMultiple Airlines
Deal found 3/27$369
This Copa Airlines deal was found by Cheapflights users on 3/26. 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 Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/228:09 amSJO - ORD
1 stop15h 11mCopa Airlines
Sat 7/263:07 pmORD - SJO
1 stop17h 28mCopa Airlines
Deal found 3/26$386
This Kiwi.com deal was found by Cheapflights users on 3/25. 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 4/1511:35 amSJO - MDW
1 stop10h 49mMultiple Airlines
Mon 4/211:23 pmMDW - SJO
1 stop22h 01mMultiple Airlines
Deal found 3/25$416
This Delta deal was found by Cheapflights users on 3/27. 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.
Thu 4/37:00 amSJO - MDW
2 stops10h 02mDelta
Sun 4/66:00 amMDW - SJO
1 stop6h 54mDelta
Deal found 3/27$435
This Delta deal was found by Cheapflights users on 3/27. 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.
Wed 4/27:00 amSJO - ORD
2 stops12h 44mDelta
Sat 4/51:26 pmORD - SJO
2 stops9h 00mDelta
Deal found 3/27$435
This United Airlines deal was found by Cheapflights users on 3/27. 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 8/155:30 amSJO - ORD
1 stop25h 26mUnited Airlines
Thu 8/288:50 amORD - SJO
1 stop11h 47mUnited Airlines
Deal found 3/27$438

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 March 28, 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 JoséChicago

SJO - ORD

SJOORD

San José Juan Santamaria Intl

Fri 5/9

12:28 pm-11:29 pm

2 stops10h 01m

Chicago O'Hare Intl

Fri 5/16

4:35 pm-11:33 am

2 stops19h 58m

$299

San JoséChicago

SJO - ORD

SJOORD

San José Juan Santamaria Intl

Mon 9/22

2:48 pm-5:42 am

1 stop13h 54m

Chicago O'Hare Intl

Sat 9/27

1:40 am-1:57 pm

1 stop13h 17m

$309

San JoséChicago

SJO - ORD

SJOORD

San José Juan Santamaria Intl

Tue 7/22

7:45 pm-2:25 pm

2 stops17h 40m

Chicago O'Hare Intl

Wed 7/30

3:45 pm-11:15 pm

1 stop8h 30m

$326

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Tue 6/10

1:25 pm-11:42 pm

1 stop9h 17m

Lambert-St Louis

Tue 6/24

6:00 am-12:00 pm

1 stop7h 00m

$328

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Tue 5/27

5:30 am-2:53 pm

2 stops32h 23m

Lambert-St Louis

Tue 6/10

8:25 am-10:11 am

1 stop26h 46m

$335

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Wed 6/11

6:18 am-8:30 pm

2 stops13h 12m

Lambert-St Louis

Tue 6/24

6:00 am-8:09 pm

2 stops15h 09m

$342

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Sat 4/26

11:35 am-12:04 am

1 stop11h 29m

Lambert-St Louis

Sat 5/3

5:45 pm-10:24 am

1 stop17h 39m

$369

San JoséChicago

SJO - ORD

SJOORD

San José Juan Santamaria Intl

Tue 7/22

8:09 am-12:20 am

1 stop15h 11m

Chicago O'Hare Intl

Sat 7/26

3:07 pm-7:35 am

1 stop17h 28m

$386

San JoséChicago

SJO - MDW

SJOMDW

San José Juan Santamaria Intl

Tue 4/15

11:35 am-11:24 pm

1 stop10h 49m

Chicago Midway

Mon 4/21

1:23 pm-10:24 am

1 stop22h 01m

$416

San JoséChicago

SJO - ORD

SJOORD

San José Juan Santamaria Intl

Thu 4/17

1:30 pm-9:25 am

1 stop18h 55m

Chicago O'Hare Intl

Sat 4/26

7:41 am-11:55 am

Nonstop5h 14m

$435

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/27

Showing 1-10 of 36 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, San José Province to Illinois?

Currently, August is the cheapest month in which you can book a flight from San José, San José Province to Illinois (average of $245). Flying from San José, San José Province to Illinois in March is currently the most expensive (average of $323). 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 March 28, 2025.

When flying from San José, San José Province 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.

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 March 28, 2025.
See what other customers who have flown with Southwest, Alaska Airlines and Delta from San José 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
4,274 reviews

Overall

8.1

Comfort

8.1

Entertainment

7.6

Food

7.1

Crew

8.7

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Southwest
8.1
Very good
4,274 reviews
Southwest
8.1
Very good
4,274 reviews

Overall

8.1

Comfort

8.1

Entertainment

7.6

Food

7.1

Crew

8.7

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Alaska Airlines
8.0
Very good
9,798 reviews
Southwest
8.1
Very good
4,274 reviews

Overall

8.1

Comfort

8.1

Entertainment

7.6

Food

7.1

Crew

8.7

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Delta
8.0
Very good
7,897 reviews
Southwest
8.1
Very good
4,274 reviews

Overall

8.1

Comfort

8.1

Entertainment

7.6

Food

7.1

Crew

8.7

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Copa Airlines
7.5
Good
1,395 reviews
Southwest
8.1
Very good
4,274 reviews

Overall

8.1

Comfort

8.1

Entertainment

7.6

Food

7.1

Crew

8.7

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
United Airlines
7.4
Good
8,603 reviews
Southwest
8.1
Very good
4,274 reviews

Overall

8.1

Comfort

8.1

Entertainment

7.6

Food

7.1

Crew

8.7

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

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.

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

    $146 is the cheapest one-way deal found within the past few days, from Spirit Airlines. You may also be able to find cheap deals on Avianca and Frontier, with prices starting from $184 and $208, respectively.

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

    The most popular route from San José, San José Province 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, San José Province to Illinois?

    The cheapest flight price from San José, San José Province to Illinois is $183. On average you can expect to pay $467. The most popular route, (San José Juan Santamaria Intl - Chicago O'Hare Intl), can usually be booked for $255.

  • 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, San José Province to Illinois?

    Currently, August is the cheapest month in which you can book a flight from San José, San José Province to Illinois (average of $245). Flying from San José, San José Province to Illinois in March is currently the most expensive (average of $323). 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.
San José to John F Kennedy Intl flights
San José to Newark flights
San José to Orlando flights
San José to Miami flights
San José to Fort Lauderdale flights
San José to Los Angeles flights
San José to LaGuardia flights
San José to Las Vegas flights
San José to Hobby flights
San José to Atlanta flights
San José to O'Hare Intl flights
San José to George Bush Intcntl flights
San José to Dulles Intl flights
San José to San Francisco flights
San José to Seattle flights
San José to Dallas/Fort Worth flights
San José to Boston flights
San José to Baltimore flights
San José to Ontario flights
San José to Charlotte flights
San José to Denver flights
San José to Reagan-National flights
Liberia to Newark flights
San José to Philadelphia flights
San José to Midway flights
San José to Salt Lake City flights
San José to Tampa flights
San José to Portland flights
San José to New Orleans flights
Liberia to Los Angeles flights
Liberia to John F Kennedy Intl flights
San José to Honolulu flights
San José to Minneapolis flights
San José to Burbank flights
San José to Love Field flights
San José to Nashville flights
San José to Sky Harbor Intl flights
San José to Raleigh flights
San José to Greensboro flights
San José to San Jose flights
San José to Austin flights
Liberia to Dallas/Fort Worth flights
San José to Cleveland flights
San José to Oakland flights
San José to San Diego flights
San José to Detroit flights
San José to San Antonio flights
San José to Columbus flights
Liberia to Miami flights
San José to Indianapolis 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 March 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$202Average$389FlexibilityNo cancel feeOn-time65%
AviancaCheapest$290Average$476FlexibilityNo cancel feeOn-time71%
Copa AirlinesCheapest$326Average$560FlexibilityNo cancel feeOn-time70%
American AirlinesCheapest$340Average$500FlexibilityNo cancel feeOn-time71%
DeltaCheapest$434Average$649FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$550Average$664FlexibilityNo cancel feeOn-time69%
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