$124+ 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 4/26. Fares are subject to change and may not be available on all flights or dates of travel.
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 April 1, 2025.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $252 (Mytrip) |
One-way from | $133 (Cheapflightsfares) |
Popular in | December |
Cheapest in | May |
Average price | $634 |
Good round-trip deal | $635 or less |
Good one-way deal | $357 or less |
Find flight deals from Illinois to San José
Cheapest flights from Illinois to San JoséExplore 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 April 1, 2025.
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 April 1, 2025.
This Mytrip deal was found by Cheapflights users on 4/1. 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.
This Kiwi.com deal was found by Cheapflights users on 3/31. 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.
This Booking.com deal was found by Cheapflights users on 4/1. 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.
This Priceline deal was found by Cheapflights users on 3/31. 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.
This American Airlines deal was found by Cheapflights users on 4/1. 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.
This Cheapflightsfares deal was found by Cheapflights users on 4/1. 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.
This Booking.com deal was found by Cheapflights users on 4/1. 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.
This Southwest deal was found by Cheapflights users on 3/31. 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.
This Kiwi.com deal was found by Cheapflights users on 3/31. 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.
This American Airlines deal was found by Cheapflights users on 3/31. 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.
This Delta deal was found by Cheapflights users on 3/31. 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.
This United deal was found by Cheapflights users on 4/1. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
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 April 1, 2025.
Use the filters below to find and compare flights from Illinois to San José that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
St. LouisSan José
STL - SJO
STLSJO
Lambert-St Louis
Tue 4/29
6:10 pm-11:50 pm
1 stop6h 40m
San José Juan Santamaria Intl
Wed 5/7
12:28 pm-9:15 am
1 stop19h 47m
St. LouisSan José
STL - SJO
STLSJO
Lambert-St Louis
Tue 4/29
5:41 pm-10:24 am
1 stop17h 43m
San José Juan Santamaria Intl
Wed 5/7
11:32 am-12:06 am
1 stop11h 34m
ChicagoSan José
ORD - SJO
ORDSJO
Chicago O'Hare Intl
Sat 5/3
11:45 am-11:18 am
2 stops24h 33m
San José Juan Santamaria Intl
Sat 5/10
11:32 am-11:29 pm
1 stop10h 57m
ChicagoSan José
ORD - SJO
ORDSJO
Chicago O'Hare Intl
Sun 5/11
5:05 am-11:33 am
1 stop7h 28m
San José Juan Santamaria Intl
Tue 7/1
7:45 pm-2:25 pm
2 stops17h 40m
St. LouisSan José
STL - SJO
STLSJO
Lambert-St Louis
Wed 5/7
7:10 am-1:09 pm
1 stop6h 59m
San José Juan Santamaria Intl
Wed 5/28
11:59 pm-6:21 pm
1 stop17h 22m
ChicagoSan José
ORD - SJO
ORDSJO
Chicago O'Hare Intl
Wed 6/18
3:45 pm-11:15 am
2 stops20h 30m
San José Juan Santamaria Intl
Tue 6/24
3:05 pm-2:25 pm
2 stops22h 20m
ChicagoSan José
MDW - SJO
MDWSJO
Chicago Midway
Fri 5/9
8:30 am-12:01 pm
1 stop28h 31m
San José Juan Santamaria Intl
Sat 5/17
1:24 pm-1:34 pm
1 stop23h 10m
ChicagoSan José
ORD - SJO
ORDSJO
Chicago O'Hare Intl
Sat 5/3
5:20 am-1:28 pm
1 stop9h 08m
San José Juan Santamaria Intl
Sat 5/10
2:30 pm-11:17 pm
1 stop7h 47m
ChicagoSan José
MDW - SJO
MDWSJO
Chicago Midway
Sat 4/12
12:58 pm-10:24 am
1 stop22h 26m
San José Juan Santamaria Intl
Sat 4/19
5:52 pm-7:35 pm
2 stops24h 43m
ChicagoSan José
ORD - SJO
ORDSJO
Chicago O'Hare Intl
Thu 5/15
1:58 pm-10:17 pm
1 stop9h 19m
San José Juan Santamaria Intl
Thu 5/22
6:03 am-4:05 pm
1 stop9h 02m
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.
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 April 1, 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 April 1, 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.
Boarding
Overall
Comfort
Food
Crew
Entertainment
Reviews
Cheri,Jan 2025
FAT - SEA
Boarding
Overall
Comfort
Food
Crew
Entertainment
Reviews
Cheri,Jan 2025
FAT - SEA
Boarding
Overall
Comfort
Food
Crew
Entertainment
Reviews
Cheri,Jan 2025
FAT - SEA
Boarding
Overall
Comfort
Food
Crew
Entertainment
Reviews
Cheri,Jan 2025
FAT - SEA
Boarding
Overall
Comfort
Food
Crew
Entertainment
Reviews
Cheri,Jan 2025
FAT - SEA
Boarding
Overall
Comfort
Food
Crew
Entertainment
Reviews
Cheri,Jan 2025
FAT - SEA
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.
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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.
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 April 1, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$237 | Average$407 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$338 | Average$482 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$345 | Average$635 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$422 | Average$729 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$428 | Average$616 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$446 | Average$775 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$540 | Average$625 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$564 | Average$774 | FlexibilityNo cancel fee | On-time69% |