HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
San José

$116+ 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 7/8. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SJO
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Illinois to San José with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 June 12, 2025.

Round-trip from

$286
(Delta)

One-way from

$116
(Priceline)

Popular in

December

Cheapest in

July

Average price

$559

Good round-trip deal

$493 or less

Good one-way deal

$202 or less
From Illinois to San José Juan Santamaria Intl
Search Deals
One-way flight from Illinois to San José Juan Santamaria Intl
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($62 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($12 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2025
Search Deals
Price to beat on a round-trip flight from Illinois to San José Juan Santamaria Intl.
Search Deals
Price to beat on a one-way flight from Illinois to San José Juan Santamaria Intl.
Search Deals

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 June 12, 2025.

This Delta deal was found by Cheapflights users on 6/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/176:00 amSTL - SJO
1 stop6h 52mDelta
Tue 11/257:00 amSJO - STL
1 stop11h 02mDelta
Deal found 6/11$286
This American Airlines deal was found by Cheapflights users on 6/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/295:29 amSTL - SJO
2 stops8h 31mAmerican Airlines
Tue 11/43:50 pmSJO - STL
1 stop16h 25mAmerican Airlines
Deal found 6/11$290
This FlightHub deal was found by Cheapflights users on 6/12. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/810:46 amORD - SJO
2 stops25h 25mSpirit Airlines
Tue 7/2212:16 pmSJO - ORD
1 stop9h 57mSpirit Airlines
Deal found 6/12$298
This Booking.com deal was found by Cheapflights users on 6/12. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/810:46 amORD - SJO
2 stops25h 25mMultiple Airlines
Tue 7/155:05 amSJO - ORD
1 stop10h 00mMultiple Airlines
Deal found 6/12$302
This Copa Airlines deal was found by Cheapflights users on 6/11. 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 Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/167:54 amORD - SJO
1 stop14h 59mCopa Airlines
Fri 9/2610:05 amSJO - ORD
1 stop13h 17mCopa Airlines
Deal found 6/11$310
This FlightHub deal was found by Cheapflights users on 6/11. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/86:00 amORD - SJO
1 stop7h 29mFrontier
Sat 11/152:49 pmSJO - ORD
1 stop19h 37mFrontier
Deal found 6/11$348
This American Airlines deal was found by Cheapflights users on 6/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/65:00 amORD - SJO
1 stop7h 55mAmerican Airlines
Wed 8/131:55 pmSJO - ORD
1 stop8h 04mAmerican Airlines
Deal found 6/11$362
This Mytrip deal was found by Cheapflights users on 6/11. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/295:26 pmSTL - SJO
1 stop18h 45mMultiple Airlines
Fri 8/17:30 amSJO - STL
1 stop25h 10mMultiple Airlines
Deal found 6/11$383
This Priceline deal was found by Cheapflights users on 6/9. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/105:25 pmORD - SJO
2 stops15h 15mAvianca
Mon 7/147:45 pmSJO - ORD
1 stop19h 20mAvianca
Deal found 6/9$385
This United Airlines deal was found by Cheapflights users on 6/12. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/146:15 amSTL - SJO
1 stop7h 11mUnited Airlines
Thu 7/177:55 amSJO - STL
1 stop13h 20mUnited Airlines
Deal found 6/12$398
This Mytrip deal was found by Cheapflights users on 6/10. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/77:13 pmSTL - SJO
2 stops17h 06mSpirit Airlines
Mon 7/1412:16 pmSJO - STL
1 stop27h 15mSpirit Airlines
Deal found 6/10$405
This Southwest deal was found by Cheapflights users on 6/11. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/228:05 amMDW - SJO
2 stops11h 50mSouthwest
Sun 9/2812:35 pmSJO - MDW
1 stop7h 40mSouthwest
Deal found 6/11$407

Cheapflights Fare Finder

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 June 12, 2025.
Use the filters below to find and compare flights from Illinois to San José that are best for you.

Fly from

Illinois

Fly to

San José

Route

Depart

Return

Price

St. LouisSan José

STL - SJO

STLSJO

Lambert-St Louis

Mon 11/17

6:00 am-12:52 pm

1 stop6h 52m

San José Juan Santamaria Intl

Tue 11/25

7:00 am-6:02 pm

1 stop11h 02m

$286

St. LouisSan José

STL - SJO

STLSJO

Lambert-St Louis

Wed 10/29

5:29 am-1:00 pm

2 stops8h 31m

San José Juan Santamaria Intl

Tue 11/4

3:50 pm-8:15 am

1 stop16h 25m

$290

ChicagoSan José

ORD - SJO

ORDSJO

Chicago O'Hare Intl

Tue 7/8

10:46 am-11:11 am

2 stops25h 25m

San José Juan Santamaria Intl

Tue 7/22

12:16 pm-11:13 pm

1 stop9h 57m

$298

ChicagoSan José

ORD - SJO

ORDSJO

Chicago O'Hare Intl

Tue 7/8

10:46 am-11:11 am

2 stops25h 25m

San José Juan Santamaria Intl

Tue 7/15

5:05 am-4:05 pm

1 stop10h 00m

$302

ChicagoSan José

ORD - SJO

ORDSJO

Chicago O'Hare Intl

Tue 9/16

7:54 am-9:53 pm

1 stop14h 59m

San José Juan Santamaria Intl

Fri 9/26

10:05 am-12:22 am

1 stop13h 17m

$310

ChicagoSan José

ORD - SJO

ORDSJO

Chicago O'Hare Intl

Sat 11/8

6:00 am-1:29 pm

1 stop7h 29m

San José Juan Santamaria Intl

Sat 11/15

2:49 pm-10:26 am

1 stop19h 37m

$348

ChicagoSan José

ORD - SJO

ORDSJO

Chicago O'Hare Intl

Wed 8/6

5:00 am-11:55 am

1 stop7h 55m

San José Juan Santamaria Intl

Wed 8/13

1:55 pm-10:59 pm

1 stop8h 04m

$362

St. LouisSan José

STL - SJO

STLSJO

Lambert-St Louis

Tue 7/29

5:26 pm-11:11 am

1 stop18h 45m

San José Juan Santamaria Intl

Fri 8/1

7:30 am-9:40 am

1 stop25h 10m

$383

ChicagoSan José

ORD - SJO

ORDSJO

Chicago O'Hare Intl

Thu 7/10

5:25 pm-7:40 am

2 stops15h 15m

San José Juan Santamaria Intl

Mon 7/14

7:45 pm-4:05 pm

1 stop19h 20m

$385

St. LouisSan José

STL - SJO

STLSJO

Lambert-St Louis

Mon 7/7

7:13 pm-11:19 am

2 stops17h 06m

San José Juan Santamaria Intl

Mon 7/14

12:16 pm-4:31 pm

1 stop27h 15m

$405

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/12

Showing 1-10 of 37 results
1
2
3
4

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.

Cheapflights Insights

Everything you need to know about your flight from Illinois to San José

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 June 12, 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 June 12, 2025.
Read reviews from past customers who have flown Alaska Airlines, Southwest 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.
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Overall

8.0

Food

7.1

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Overall

8.0

Food

7.1

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
Southwest
8.0
Very good
4,287 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Overall

8.0

Food

7.1

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
Delta
8.0
Very good
7,946 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Overall

8.0

Food

7.1

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
Copa Airlines
7.5
Good
1,451 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Overall

8.0

Food

7.1

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.
Aeromexico
7.5
Good
1,706 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Overall

8.0

Food

7.1

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

Surinder,May 2025

SEA - YYZ

My wife wanted the aile seat and I always prefer window seat. Luckily we both got the best seats we wanted. The plane was very nice and we enjoyed the best take off and the smooth landing at Toronto. All the services by the staff inside the aeroplane were very nice well appreciated. Thanks again and hope to see you soon.

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 $116. Frontier flights start at $133 while deals on United Airlines start at $154 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 $200. While the most popular route (Chicago O'Hare Intl - San José Juan Santamaria Intl) can be booked for $310 on average our data indicates $795 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

Traveling to a place near Illinois?

Book flights to Illinois if you plan to visit one of these locations
Heredia
Manuel Antonio
Alajuela
Monteverde
Jacó

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Illinois to San José

See prices for flight routes from nearby airports that may be better suited for you.
Newark to San José flights
John F Kennedy Intl to San José flights
Los Angeles to San José flights
Miami to San José flights
San Francisco to San José flights
LaGuardia to San José flights
Dulles Intl to San José flights
Fort Lauderdale to San José flights
Hobby to San José flights
John F Kennedy Intl to Liberia flights
Los Angeles to Liberia flights
Baltimore to San José flights
Dallas/Fort Worth to San José flights
O'Hare Intl to San José flights
Newark to Liberia flights
George Bush Intcntl to San José flights
Atlanta to San José flights
Reagan-National to San José flights
LaGuardia to Liberia flights
Boston to San José flights
Orlando to San José flights
Denver to Liberia flights
Seattle to San José flights
Denver to San José flights
O'Hare Intl to Liberia flights
Dallas/Fort Worth to Liberia flights
Ontario to San José flights
Dulles Intl to Liberia flights
Atlanta to Liberia flights
Charlotte to San José flights
Boston to Liberia flights
Salt Lake City to San José flights
Hobby to Liberia flights
Raleigh to San José flights
Baltimore to Liberia flights
Philadelphia to San José flights
San Francisco to Liberia flights
Reagan-National to Liberia flights
Minneapolis to San José flights
Seattle to Liberia flights
Austin to San José flights
George Bush Intcntl to Liberia flights
Miami to Liberia flights
Love Field to San José flights
Minneapolis to Liberia flights
Oakland to San José flights
Tampa to San José flights
Detroit to San José flights
Sky Harbor Intl to San José flights
San Jose to San José flights

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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$274Average$438FlexibilityNo cancel feeOn-time65%
AviancaCheapest$323Average$462FlexibilityNo cancel feeOn-time71%
JetBlueCheapest$345Average$635FlexibilityNo cancel feeOn-time62%
Copa AirlinesCheapest$376Average$607FlexibilityNo cancel feeOn-time70%
DeltaCheapest$408Average$729FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$446Average$729FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$479Average$636FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$493Average$755FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.