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$103+ Cheap flights from Illinois to San José (SJO)

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 5/10. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SJO
Feb 27 — Mar 61
Thu 2/27
Thu 3/6
1 adult, Economy
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Cheap flight deals from Illinois to San José

Keep the following information in mind while searching for Illinois to San José flight deals. Data was last updated February 22, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$249
(FlightHub)

One-way from

$103
(CheapOair)

Popular in

December

Cheapest in

May

Average price

$637

Good round-trip deal

$696 or less

Good one-way deal

$300 or less
Provider with most accurate pricing for Chicago (CHI)-San José Juan Santamaria Intl flight deals.
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Provider most trusted by Cheapflights users for Chicago (CHI)-San José Juan Santamaria Intl flights.
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From Illinois to San José Juan Santamaria Intl
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One-way flight from Illinois to San José Juan Santamaria Intl
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Highest demand for flights based on searches. 10% potential increase in price ($71 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($14 potential savings vs. average RT price).
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Average for round-trip flights in February 2025
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Price to beat on a round-trip flight from Illinois to San José Juan Santamaria Intl.
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Price to beat on a one-way flight from Illinois to San José Juan Santamaria Intl.
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Find flight deals from Illinois to San José

Cheapest flights from Illinois to San José
Explore the most affordable flight options available from Illinois to San José. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 22, 2025.

This FlightHub deal was found by Cheapflights users on 2/21. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/16:47 pmSTL - SJO
1 stop17h 34mSpirit Airlines
Mon 4/712:50 amSJO - STL
1 stop16h 02mSpirit Airlines
Deal found 2/21$249
This Kiwi.com deal was found by Cheapflights users on 2/20. 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 4/16:47 pmSTL - SJO
1 stop17h 34mMultiple Airlines
Mon 4/78:46 amSJO - STL
2 stops32h 06mMultiple Airlines
Deal found 2/20$320
This CheapOair deal was found by Cheapflights users on 2/21. 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.
Thu 4/249:09 amORD - SJO
2 stops27h 09mSpirit Airlines
Tue 4/2912:55 amSJO - ORD
2 stops14h 04mSpirit Airlines
Deal found 2/21$329
This CheapOair deal was found by Cheapflights users on 2/21. 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.
Mon 3/32:42 amORD - SJO
1 stop20h 30mMultiple Airlines
Tue 3/1112:26 pmSJO - ORD
2 stops20h 13mMultiple Airlines
Deal found 2/21$334
This Kiwi.com deal was found by Cheapflights users on 2/20. 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 4/16:00 amMDW - SJO
2 stops11h 23mMultiple Airlines
Tue 4/811:55 amSJO - MDW
1 stop10h 29mMultiple Airlines
Deal found 2/20$352
This Delta deal was found by Cheapflights users on 2/22. 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.
Sat 5/36:00 amSTL - SJO
1 stop8h 28mDelta
Thu 5/81:24 pmSJO - STL
1 stop9h 14mDelta
Deal found 2/22$428
This American Airlines deal was found by Cheapflights users on 2/22. 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.
Sat 5/312:00 pmSTL - SJO
2 stops10h 58mAmerican Airlines
Thu 5/86:03 amSJO - STL
1 stop10h 26mAmerican Airlines
Deal found 2/22$432
This KAYAK deal was found by Cheapflights users on 2/22. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/153:09 pmORD - SJO
1 stop17h 25mCopa Airlines
Thu 3/202:28 pmSJO - ORD
1 stop8h 59mCopa Airlines
Deal found 2/22$436
This United Airlines deal was found by Cheapflights users on 2/21. 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 2/2110:53 amORD - SJO
1 stop9h 00mUnited Airlines
Sun 2/232:05 pmSJO - ORD
Nonstop5h 25mUnited Airlines
Deal found 2/21$438
This Delta deal was found by Cheapflights users on 2/21. 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.
Sat 3/111:01 amMDW - SJO
1 stop11h 11mDelta
Thu 3/67:00 amSJO - MDW
1 stop9h 20mDelta
Deal found 2/21$448
This Delta deal was found by Cheapflights users on 2/21. 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 2/255:45 amORD - SJO
1 stop7h 09mDelta
Thu 3/67:00 amSJO - ORD
1 stop8h 45mDelta
Deal found 2/21$448
This American Airlines deal was found by Cheapflights users on 2/21. 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.
Sat 3/17:09 pmORD - SJO
1 stop18h 38mAmerican Airlines
Wed 3/512:59 amSJO - ORD
1 stop10h 01mAmerican Airlines
Deal found 2/21$459

Find flights from Illinois to San José within your budget

Customize your flight search to find flights from Illinois to San José 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 February 22, 2025.

Fly from

Illinois

Fly to

San José

Route

Depart

Return

Price

St. LouisSan José

STL - SJO

STLSJO

Lambert-St Louis

Tue 4/1

6:47 pm-11:21 am

1 stop17h 34m

San José Juan Santamaria Intl

Mon 4/7

12:50 am-5:52 pm

1 stop16h 02m

$249

St. LouisSan José

STL - SJO

STLSJO

Lambert-St Louis

Tue 4/1

6:47 pm-11:21 am

1 stop17h 34m

San José Juan Santamaria Intl

Mon 4/7

8:46 am-5:52 pm

2 stops32h 06m

$320

ChicagoSan José

ORD - SJO

ORDSJO

Chicago O'Hare Intl

Thu 4/24

9:09 am-11:18 am

2 stops27h 09m

San José Juan Santamaria Intl

Tue 4/29

12:55 am-3:59 pm

2 stops14h 04m

$329

ChicagoSan José

ORD - SJO

ORDSJO

Chicago O'Hare Intl

Sat 5/3

5:10 am-11:18 am

1 stop7h 08m

San José Juan Santamaria Intl

Sat 5/17

1:24 pm-10:28 pm

1 stop8h 04m

$334

ChicagoSan José

MDW - SJO

MDWSJO

Chicago Midway

Tue 4/1

6:00 am-4:23 pm

2 stops11h 23m

San José Juan Santamaria Intl

Tue 4/8

11:55 am-11:24 pm

1 stop10h 29m

$352

St. LouisSan José

STL - SJO

STLSJO

Lambert-St Louis

Sat 5/3

6:00 am-1:28 pm

1 stop8h 28m

San José Juan Santamaria Intl

Thu 5/8

1:24 pm-11:38 pm

1 stop9h 14m

$428

St. LouisSan José

STL - SJO

STLSJO

Lambert-St Louis

Sat 5/3

12:00 pm-9:58 pm

2 stops10h 58m

San José Juan Santamaria Intl

Thu 5/8

11:59 pm-9:54 am

1 stop8h 55m

$432

ChicagoSan José

ORD - SJO

ORDSJO

Chicago O'Hare Intl

Sat 3/15

3:09 pm-7:34 am

1 stop17h 25m

San José Juan Santamaria Intl

Thu 3/20

2:28 pm-12:27 am

1 stop8h 59m

$436

ChicagoSan José

MDW - SJO

MDWSJO

Chicago Midway

Sat 3/1

11:01 am-10:12 pm

1 stop11h 11m

San José Juan Santamaria Intl

Sat 3/8

7:00 am-2:53 pm

1 stop7h 53m

$448

ChicagoSan José

ORD - SJO

ORDSJO

Chicago O'Hare Intl

Tue 3/4

4:15 pm-6:53 am

2 stops14h 38m

San José Juan Santamaria Intl

Thu 3/13

7:00 am-8:44 pm

2 stops12h 44m

$452

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/21

Showing 1-10 of 42 results
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Best time to book a flight from Illinois to San José

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

Travel insights for flights from Illinois to San José

Get recent, data-driven insights about flights from Illinois to San José including ideal travel times, pricing trends, and more.

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

Currently, September is the cheapest month in which you can book a flight from Illinois to San José, San José Province (average of $398). Flying from Illinois to San José, San José Province in March is currently the most expensive (average of $555). 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 IL to SJO?

Find hourly flight availability from Illinois to San José. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 22, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Illinois to San José, San José Province as you normally would.

Rainfall in San José by month

Plan your trip to San José by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in San José, San José Province ranges from 0.0 - 11.8 inches per month. September is typically the wettest month, when rainfall can reach 11.8 in. February is typically the driest time to visit San José, San José Province when rainfall is around 0.0 in.

Temperature in San José by month

Plan your trip to San José by taking into account the average temperature totals by month.

If weather is an important factor for your trip to San José, San José Province, use this chart to help with planning. For those seeking warmer temperatures, April is the ideal time of year to visit, when temperatures reach an average of 69.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 64.4 F).

Reviews of airlines servicing San José

Get insights into the airlines that provide service to San José. 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 San José. Reviews last updated February 22, 2025.
Read reviews from past customers who have flown Southwest, Alaska Airlines and Delta from Illinois to San José. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,396 reviews

Boarding

8.2

Crew

8.7

Overall

8.1

Entertainment

7.6

Food

7.1

Comfort

8.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Southwest
8.1
Very good
4,396 reviews
Southwest
8.1
Very good
4,396 reviews

Boarding

8.2

Crew

8.7

Overall

8.1

Entertainment

7.6

Food

7.1

Comfort

8.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Alaska Airlines
8.0
Very good
9,702 reviews
Southwest
8.1
Very good
4,396 reviews

Boarding

8.2

Crew

8.7

Overall

8.1

Entertainment

7.6

Food

7.1

Comfort

8.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Delta
8.0
Very good
8,203 reviews
Southwest
8.1
Very good
4,396 reviews

Boarding

8.2

Crew

8.7

Overall

8.1

Entertainment

7.6

Food

7.1

Comfort

8.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Copa Airlines
7.6
Good
1,502 reviews
Southwest
8.1
Very good
4,396 reviews

Boarding

8.2

Crew

8.7

Overall

8.1

Entertainment

7.6

Food

7.1

Comfort

8.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

United Airlines
7.4
Good
8,754 reviews
Southwest
8.1
Very good
4,396 reviews

Boarding

8.2

Crew

8.7

Overall

8.1

Entertainment

7.6

Food

7.1

Comfort

8.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Related info for your journey

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

    For a flight from Illinois to San José, you will be flying into 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 Illinois to San José, San José Province one-way?

    To fly one-way, consider booking your trip with Spirit Airlines, which is currently one of the cheapest options available, starting at $103. Delta flights start at $181 while deals on Copa Airlines start at $202 one-way.

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

    Most travelers choose Chicago O'Hare Intl - San José Juan Santamaria Intl, Chicago Midway - San José Juan Santamaria Intl or Lambert-St Louis - San José Juan Santamaria Intl when deciding on the best route from Illinois to San José, San José Province.

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

    Looking at all options, your cheapest flight can be booked for $300. While the most popular route (Chicago O'Hare Intl - San José Juan Santamaria Intl) can be booked for $243 on average our data indicates $1,225 when flying from Illinois to San José, San José Province.

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

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

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

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

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

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

    Currently, September is the cheapest month in which you can book a flight from Illinois to San José, San José Province (average of $398). Flying from Illinois to San José, San José Province in March is currently the most expensive (average of $555). 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.

See more FAQs

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Alternative routes for Illinois to San José

See prices for flight routes from nearby airports that may be better suited for you.
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Seattle to Liberia flights
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Minneapolis to San José flights
Midway to San José flights
Baltimore to Liberia flights
San Francisco to Liberia flights
Atlanta to Liberia flights
Charlotte to Liberia flights
Raleigh to San José flights
Reagan-National to Liberia flights
Portland to San José flights
Miami to Liberia flights
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Philadelphia to Liberia flights
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Top 8 airlines flying from Illinois to San José

Discover the top 8 airlines that operate flights from Illinois to San José. 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 February 22, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$238Average$393FlexibilityNo cancel feeOn-time65%
AviancaCheapest$337Average$469FlexibilityNo cancel feeOn-time71%
JetBlueCheapest$345Average$623FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$422Average$722FlexibilityNo cancel feeOn-time71%
DeltaCheapest$446Average$752FlexibilityNo cancel feeOn-timeN/A
Copa AirlinesCheapest$459Average$642FlexibilityNo cancel feeOn-time70%
SouthwestCheapest$540Average$618FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$582Average$798FlexibilityNo cancel feeOn-time69%
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