$155+ 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 11/7. Fares are subject to change and may not be available on all flights or dates of travel.
SJO — ORD
Jul 8 — Jul 151
1 adult, Economy
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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
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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 San José to Illinois
Keep the following information in mind while searching for San José to Illinois flight deals. Data was last updated July 3, 2025.
Round-trip from | $278 (Southwest) |
|---|---|
One-way from | $155 (Booking.com) |
Popular in | December |
Cheapest in | August |
Average price | $433 |
Good round-trip deal | $442 or less |
Good one-way deal | $237 or less |
Find flight deals from San José to Illinois
Cheapest flights from San José to IllinoisExplore 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 July 3, 2025.
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 July 3, 2025.
This Southwest deal was found by Cheapflights users on 7/1. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/38:50 amSJO - STL
1 stop10h 10mSouthwest
Tue 10/145:30 amSTL - SJO
1 stop7h 35mSouthwest
Deal found 7/1![Southwest logo]()
$278
This American Airlines deal was found by Cheapflights users on 7/3. 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 9/37:27 amSJO - STL
2 stops14h 40mAmerican Airlines
Tue 10/148:49 amSTL - SJO
1 stop10h 27mAmerican Airlines
Deal found 7/3![American Airlines logo]()
$283
This Cheapflightsfares deal was found by Cheapflights users on 7/1. 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.
Wed 7/2312:16 pmSJO - ORD
1 stop9h 57mSpirit Airlines
Wed 7/305:05 amORD - SJO
1 stop7h 06mSpirit Airlines
Deal found 7/1![Spirit Airlines logo]()
$297
This Avianca deal was found by Cheapflights users on 7/2. 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 Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/94:45 pmSJO - ORD
1 stop19h 30mAvianca
Sat 7/125:25 pmORD - SJO
2 stops15h 15mAvianca
Deal found 7/2![Avianca logo]()
$302
This CheapOair deal was found by Cheapflights users on 7/1. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/261:47 pmSJO - ORD
1 stop8h 42mMultiple Airlines
Tue 7/295:05 amORD - SJO
1 stop7h 06mMultiple Airlines
Deal found 7/1![Multiple Airlines logo]()
$303
This Southwest deal was found by Cheapflights users on 6/30. 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.
Tue 9/161:40 pmSJO - MDW
1 stop8h 40mSouthwest
Tue 9/306:25 amMDW - SJO
1 stop13h 30mSouthwest
Deal found 6/30![Southwest logo]()
$316
This United Airlines deal was found by Cheapflights users on 7/3. 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.
Thu 9/41:30 pmSJO - STL
2 stops23h 49mUnited Airlines
Thu 10/168:25 amSTL - SJO
1 stop12h 12mUnited Airlines
Deal found 7/3![United Airlines logo]()
$347
This Copa Airlines deal was found by Cheapflights users on 7/3. 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.
Wed 9/242:55 pmSJO - ORD
1 stop8h 26mCopa Airlines
Thu 10/23:07 pmORD - SJO
3 stops26h 45mCopa Airlines
Deal found 7/3![Copa Airlines logo]()
$351
This Kiwi.com deal was found by Cheapflights users on 7/1. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1111:27 amSJO - MDW
1 stop20h 26mMultiple Airlines
Mon 9/152:39 pmMDW - SJO
2 stops21h 35mMultiple Airlines
Deal found 7/1![Multiple Airlines logo]()
$367
This Kiwi.com deal was found by Cheapflights users on 7/2. 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 9/312:18 pmSJO - STL
1 stop20h 22mMultiple Airlines
Mon 10/132:22 pmSTL - SJO
1 stop23h 18mMultiple Airlines
Deal found 7/2![Multiple Airlines logo]()
$398
This Delta deal was found by Cheapflights users on 7/3. 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 9/41:35 pmSJO - STL
1 stop7h 27mDelta
Tue 10/146:00 amSTL - SJO
1 stop6h 48mDelta
Deal found 7/3![Delta logo]()
$409
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 July 3, 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
Wed 9/3
8:50 am-8:00 pm
1 stop10h 10m
Lambert-St Louis
Tue 10/14
5:30 am-12:05 pm
1 stop7h 35m
$278
San JoséSt. Louis
SJO - STL
SJOSTL
San José Juan Santamaria Intl
Wed 9/3
7:27 am-11:07 pm
2 stops14h 40m
Lambert-St Louis
Tue 10/14
8:49 am-6:16 pm
1 stop10h 27m
$283
San JoséChicago
SJO - ORD
SJOORD
San José Juan Santamaria Intl
Wed 7/23
12:16 pm-11:13 pm
1 stop9h 57m
Chicago O'Hare Intl
Wed 7/30
5:05 am-11:11 am
1 stop7h 06m
$297
San JoséChicago
SJO - ORD
SJOORD
San José Juan Santamaria Intl
Sat 7/26
1:47 pm-11:29 pm
1 stop8h 42m
Chicago O'Hare Intl
Tue 7/29
5:05 am-11:11 am
1 stop7h 06m
$303
San JoséChicago
SJO - MDW
SJOMDW
San José Juan Santamaria Intl
Tue 9/16
1:40 pm-11:20 pm
1 stop8h 40m
Chicago Midway
Tue 9/30
6:25 am-6:55 pm
1 stop13h 30m
$316
San JoséChicago
SJO - ORD
SJOORD
San José Juan Santamaria Intl
Wed 8/27
5:45 am-2:25 pm
1 stop7h 40m
Chicago O'Hare Intl
Fri 8/29
3:45 pm-9:50 pm
1 stop7h 05m
$340
San JoséSt. Louis
SJO - STL
SJOSTL
San José Juan Santamaria Intl
Thu 9/4
1:30 pm-10:08 pm
1 stop7h 38m
Lambert-St Louis
Thu 10/16
6:15 am-7:37 pm
1 stop14h 22m
$347
San JoséChicago
SJO - ORD
SJOORD
San José Juan Santamaria Intl
Wed 9/24
2:29 pm-12:21 am
1 stop8h 52m
Chicago O'Hare Intl
Thu 10/2
3:07 pm-4:52 pm
3 stops26h 45m
$351
San JoséChicago
SJO - ORD
SJOORD
San José Juan Santamaria Intl
Sat 8/2
1:47 pm-11:29 pm
1 stop8h 42m
Chicago O'Hare Intl
Sat 8/9
5:01 am-12:31 pm
1 stop8h 30m
$353
San JoséChicago
SJO - MDW
SJOMDW
San José Juan Santamaria Intl
Thu 9/11
11:27 am-8:53 am
1 stop20h 26m
Chicago Midway
Mon 9/15
2:39 pm-11:14 am
2 stops21h 35m
$367
Showing 1-10 of 27 results
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 $321). 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 July 3, 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.
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 July 3, 2025.
Peruse reviews from past customers who have flown with Southwest, Delta, and Copa 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.
Crew
8.6
Food
7.0
Entertainment
7.6
Comfort
8.0
Boarding
8.2
Overall
8.0
Reviews
1 / 20
8.0
ExcellentJohn,May 2025
PVD - BNA
Crew
8.6
Food
7.0
Entertainment
7.6
Comfort
8.0
Boarding
8.2
Overall
8.0
Reviews
1 / 20
8.0
ExcellentJohn,May 2025
PVD - BNA
Crew
8.6
Food
7.0
Entertainment
7.6
Comfort
8.0
Boarding
8.2
Overall
8.0
Reviews
1 / 20
8.0
ExcellentJohn,May 2025
PVD - BNA
Crew
8.6
Food
7.0
Entertainment
7.6
Comfort
8.0
Boarding
8.2
Overall
8.0
Reviews
1 / 20
8.0
ExcellentJohn,May 2025
PVD - BNA
Crew
8.6
Food
7.0
Entertainment
7.6
Comfort
8.0
Boarding
8.2
Overall
8.0
Reviews
1 / 20
8.0
ExcellentJohn,May 2025
PVD - BNA
Crew
8.6
Food
7.0
Entertainment
7.6
Comfort
8.0
Boarding
8.2
Overall
8.0
Reviews
1 / 20
8.0
ExcellentJohn,May 2025
PVD - BNA
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.
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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.
Top 7 airlines flying from San José to Illinois
Discover the top 7 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 July 3, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$249 | Average$462 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$266 | Average$413 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$314 | Average$485 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$340 | Average$483 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$425 | Average$527 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$434 | Average$558 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$437 | Average$623 | FlexibilityNo cancel fee | On-time69% |