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$132+ Cheap flights from Costa Rica 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 5/30. Fares are subject to change and may not be available on all flights or dates of travel.
SJO — ORD
May 6 — May 131
Tue 5/6
Tue 5/13
1 adult, Economy
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Cheap flight deals from Costa Rica to Illinois

Keep the following information in mind while searching for Costa Rica to Illinois flight deals. Data was last updated May 1, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$274
(Kiwi.com)

One-way from

$132
(eDestinos)

Popular in

December

Cheapest in

August

Average price

$443

Good round-trip deal

$478 or less

Good one-way deal

$255 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 Costa Rica to Illinois
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One-way flight from Costa Rica to Illinois
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Highest demand for flights based on searches. 3% potential increase in price ($18 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in May 2025
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Price to beat on a round-trip flight from Costa Rica to Illinois.
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Price to beat on a one-way flight from Costa Rica to Illinois.
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Find flight deals from Costa Rica to Illinois

Cheapest flights from Costa Rica to Illinois
Explore the most affordable flight options available from Costa Rica to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 1, 2025.

This Kiwi.com deal was found by Cheapflights users on 4/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/2211:32 amSJO - STL
1 stop11h 20mMultiple Airlines
Wed 5/285:45 pmSTL - SJO
1 stop17h 42mMultiple Airlines
Deal found 4/30$274
This Kiwi.com deal was found by Cheapflights users on 4/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/2912:28 pmSJO - ORD
1 stop10h 37mMultiple Airlines
Sat 6/75:08 pmORD - SJO
1 stop18h 19mMultiple Airlines
Deal found 4/30$291
This eDestinos deal was found by Cheapflights users on 4/30. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/3011:32 amSJO - ORD
1 stop10h 57mSpirit Airlines
Sat 6/1410:46 amORD - SJO
2 stops25h 33mSpirit Airlines
Deal found 4/30$292
This Copa Airlines deal was found by Cheapflights users on 4/30. 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 Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/105:52 pmSJO - ORD
1 stop18h 50mCopa Airlines
Sat 10/183:07 pmORD - SJO
1 stop18h 13mCopa Airlines
Deal found 4/30$311
This Cheapflightsfares deal was found by Cheapflights users on 4/30. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/175:05 amSJO - ORD
1 stop10h 00mAvianca
Sun 7/203:45 pmORD - SJO
2 stops8h 50mAvianca
Deal found 4/30$314
This American Airlines deal was found by Cheapflights users on 4/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/216:03 amSJO - STL
1 stop10h 26mAmerican Airlines
Wed 5/287:00 amSTL - SJO
1 stop16h 17mAmerican Airlines
Deal found 4/30$336
This United Airlines deal was found by Cheapflights users on 4/30. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/211:30 pmSJO - STL
2 stops25h 00mUnited Airlines
Wed 5/286:30 amSTL - SJO
2 stops17h 09mUnited Airlines
Deal found 4/30$340
This Kiwi.com deal was found by Cheapflights users on 4/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/84:10 amSJO - MDW
2 stops15h 07mMultiple Airlines
Thu 6/129:12 pmMDW - SJO
1 stop14h 25mMultiple Airlines
Deal found 4/30$375
This Southwest deal was found by Cheapflights users on 4/30. 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.
Thu 9/111:40 pmSJO - MDW
1 stop9h 25mSouthwest
Mon 9/155:05 amMDW - SJO
1 stop8h 40mSouthwest
Deal found 4/30$426
This United Airlines deal was found by Cheapflights users on 4/30. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/11:00 pmSJO - ORD
Nonstop5h 34mUnited Airlines
Fri 6/65:02 amORD - SJO
1 stop17h 13mUnited Airlines
Deal found 4/30$432
This Delta deal was found by Cheapflights users on 4/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/31:20 pmSJO - MDW
1 stop8h 02mDelta
Sat 5/106:00 amMDW - SJO
1 stop8h 05mDelta
Deal found 4/30$435
This American Airlines deal was found by Cheapflights users on 4/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/56:03 amSJO - ORD
1 stop16h 53mAmerican Airlines
Sat 5/106:51 amORD - SJO
1 stop12h 44mAmerican Airlines
Deal found 4/30$444

Cheapflights Fare Finder

Customize your flight search to find flights from Costa Rica 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 May 1, 2025.
Use the filters below to find and compare flights from Costa Rica to Illinois that are best for you.

Fly from

Costa Rica

Fly to

Illinois

Route

Depart

Return

Price

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Thu 5/22

11:32 am-11:52 pm

1 stop11h 20m

Lambert-St Louis

Wed 5/28

5:45 pm-10:27 am

1 stop17h 42m

$274

San JoséChicago

SJO - ORD

SJOORD

San José Juan Santamaria Intl

Thu 5/29

12:28 pm-12:05 am

1 stop10h 37m

Chicago O'Hare Intl

Sat 6/7

5:08 pm-10:27 am

1 stop18h 19m

$291

San JoséChicago

SJO - ORD

SJOORD

San José Juan Santamaria Intl

Fri 5/30

11:32 am-11:29 pm

1 stop10h 57m

Chicago O'Hare Intl

Sat 6/14

10:46 am-11:19 am

2 stops25h 33m

$292

San JoséChicago

SJO - ORD

SJOORD

San José Juan Santamaria Intl

Fri 10/10

5:52 pm-1:42 pm

1 stop18h 50m

Chicago O'Hare Intl

Sat 10/18

3:07 pm-8:20 am

1 stop18h 13m

$311

San JoséChicago

SJO - ORD

SJOORD

San José Juan Santamaria Intl

Thu 7/17

5:05 am-4:05 pm

1 stop10h 00m

Chicago O'Hare Intl

Sun 7/20

3:45 pm-11:35 pm

2 stops8h 50m

$314

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Wed 5/21

6:03 am-5:29 pm

1 stop10h 26m

Lambert-St Louis

Wed 5/28

7:00 am-10:17 pm

1 stop16h 17m

$336

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Wed 5/21

1:30 pm-3:30 pm

2 stops25h 00m

Lambert-St Louis

Wed 5/28

6:30 am-10:39 pm

2 stops17h 09m

$340

San JoséChicago

SJO - MDW

SJOMDW

San José Juan Santamaria Intl

Sun 6/8

4:10 am-8:17 pm

2 stops15h 07m

Chicago Midway

Thu 6/12

9:12 pm-10:37 am

1 stop14h 25m

$375

San JoséChicago

SJO - MDW

SJOMDW

San José Juan Santamaria Intl

Thu 9/11

1:40 pm-12:05 am

1 stop9h 25m

Chicago Midway

Mon 9/15

5:05 am-12:45 pm

1 stop8h 40m

$426

San JoséChicago

SJO - ORD

SJOORD

San José Juan Santamaria Intl

Sun 6/1

1:00 pm-7:34 pm

Nonstop5h 34m

Chicago O'Hare Intl

Thu 6/5

7:10 am-10:39 pm

1 stop16h 29m

$432

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/30

Showing 1-10 of 36 results
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Best time to book a flight from Costa Rica to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from Costa Rica 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 Costa Rica to Illinois

What is the cheapest month to book a flight from Costa Rica to Illinois?

Currently, August is the cheapest month in which you can book a flight from Costa Rica to Illinois (average of $245). Flying from Costa Rica 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 CR to IL?

Find hourly flight availability from Costa Rica 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 May 1, 2025.

When flying from Costa Rica 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 May 1, 2025.
Read reviews from past customers who have flown Alaska Airlines, Southwest and Delta from Costa Rica to Illinois. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,972 reviews

Entertainment

7.1

Boarding

8.1

Food

7.1

Comfort

7.9

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
9,972 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Entertainment

7.1

Boarding

8.1

Food

7.1

Comfort

7.9

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,293 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Entertainment

7.1

Boarding

8.1

Food

7.1

Comfort

7.9

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,934 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Entertainment

7.1

Boarding

8.1

Food

7.1

Comfort

7.9

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Copa Airlines
7.5
Good
1,415 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Entertainment

7.1

Boarding

8.1

Food

7.1

Comfort

7.9

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Aeromexico
7.5
Good
1,698 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Entertainment

7.1

Boarding

8.1

Food

7.1

Comfort

7.9

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Related info for your journey

Find useful and relevant information for your journey from Costa Rica to Illinois. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines to fly from Costa Rica to Illinois one-way?

    The cheapest airlines for a one-way flight from Costa Rica to Illinois are Spirit Airlines ($132), Avianca ($175), and American Airlines ($224).

  • Can I find deals for flights from Costa Rica to Illinois that include hotel bookings?

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

  • How can I find direct flights from Costa Rica to Illinois?

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

  • Can I find deals for business class flights from Costa Rica to Illinois?

    Yes. Cheapflights offers flight deals from Costa Rica 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 Costa Rica to Illinois?

    Currently, August is the cheapest month in which you can book a flight from Costa Rica to Illinois (average of $245). Flying from Costa Rica 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.

See more FAQs

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Alternative routes for Costa Rica to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
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San José to George Bush Intcntl flights
Guatemala City to Ontario flights
Managua to Miami flights
San Pedro Sula to John F Kennedy Intl flights
San José to Dallas/Fort Worth flights
Panama City to Tampa flights
Panama City to LaGuardia flights
Panama City to Los Angeles flights
San Pedro Sula to Newark flights

Top 6 airlines flying from Costa Rica to Illinois

Discover the top 6 airlines that operate flights from Costa Rica 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 May 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$242Average$406FlexibilityNo cancel feeOn-time65%
Copa AirlinesCheapest$311Average$506FlexibilityNo cancel feeOn-time70%
AviancaCheapest$321Average$491FlexibilityNo cancel feeOn-time71%
American AirlinesCheapest$340Average$481FlexibilityNo cancel feeOn-time71%
DeltaCheapest$434Average$563FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$438Average$730FlexibilityNo cancel feeOn-time69%

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