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Illinois

$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 4/30. Fares are subject to change and may not be available on all flights or dates of travel.
SJO — ORD
Apr 7 — Apr 141
Mon 4/7
Mon 4/14
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 April 2, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$296
(Mytrip)

One-way from

$132
(Cheapflightsfares)

Popular in

December

Cheapest in

August

Average price

$500

Good round-trip deal

$533 or less

Good one-way deal

$235 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. 5% potential increase in price ($27 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($9 potential savings vs. average RT price).
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Average for round-trip flights in April 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 April 2, 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.
Wed 5/712:28 pmSJO - STL
1 stop19h 47mSpirit Airlines
Sun 5/1110:10 amSTL - SJO
1 stop26h 23mSpirit Airlines
Deal found 4/1$296
This eDestinos 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/3012:23 pmSJO - ORD
1 stop10h 57mSpirit Airlines
Sat 5/104:35 pmORD - SJO
2 stops19h 58mSpirit Airlines
Deal found 4/1$300
This Kiwi.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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/2511:35 amSJO - ORD
1 stop11h 01mMultiple Airlines
Wed 4/305:55 amORD - SJO
2 stops18h 55mMultiple Airlines
Deal found 4/1$301
This Priceline 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/283:00 pmSJO - ORD
1 stop21h 15mAvianca
Fri 5/92:35 pmORD - SJO
1 stop19h 45mAvianca
Deal found 4/1$322
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/285:30 amSJO - STL
2 stops32h 23mUnited Airlines
Sun 6/15:55 pmSTL - SJO
1 stop17h 16mUnited Airlines
Deal found 4/1$328
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.
Tue 8/192:45 pmSJO - STL
1 stop16h 20mAmerican Airlines
Tue 9/235:35 amSTL - SJO
1 stop8h 30mAmerican Airlines
Deal found 4/1$337
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.
Wed 5/712:28 pmSJO - STL
3 stops29h 13mMultiple Airlines
Sun 5/1110:10 amSTL - SJO
2 stops25h 17mMultiple Airlines
Deal found 4/1$394
This Copa 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 Copa Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/195:52 amSJO - ORD
1 stop17h 28mCopa Airlines
Tue 7/221:07 amORD - SJO
1 stop7h 28mCopa Airlines
Deal found 4/1$401
This Southwest 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 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 4/1$426
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/241:00 pmSJO - ORD
Nonstop5h 34mUnited Airlines
Tue 5/277:10 amORD - SJO
1 stop13h 27mUnited Airlines
Deal found 4/1$431
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/37:00 amSJO - MDW
2 stops10h 02mDelta
Sun 4/612:48 pmMDW - SJO
1 stop9h 38mDelta
Deal found 4/1$435
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/37:00 amSJO - ORD
2 stops12h 45mDelta
Sun 4/65:08 pmORD - SJO
2 stops13h 38mDelta
Deal found 4/1$435

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 April 2, 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

Wed 5/7

12:28 pm-9:15 am

1 stop19h 47m

Lambert-St Louis

Sun 5/11

10:10 am-11:33 am

1 stop26h 23m

$296

San JoséChicago

SJO - ORD

SJOORD

San José Juan Santamaria Intl

Wed 4/30

12:23 pm-12:20 am

1 stop10h 57m

Chicago O'Hare Intl

Sat 5/10

4:35 pm-11:33 am

2 stops19h 58m

$300

San JoséChicago

SJO - ORD

SJOORD

San José Juan Santamaria Intl

Fri 4/25

11:35 am-11:36 pm

1 stop11h 01m

Chicago O'Hare Intl

Wed 4/30

5:55 am-11:50 pm

2 stops18h 55m

$301

San JoséChicago

SJO - ORD

SJOORD

San José Juan Santamaria Intl

Mon 4/28

3:00 pm-1:15 pm

1 stop21h 15m

Chicago O'Hare Intl

Fri 5/9

2:35 pm-9:20 am

1 stop19h 45m

$322

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Wed 5/28

5:30 am-2:53 pm

2 stops32h 23m

Lambert-St Louis

Sun 6/1

5:55 pm-10:11 am

1 stop17h 16m

$328

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Wed 6/11

6:18 am-8:30 pm

2 stops13h 12m

Lambert-St Louis

Tue 6/24

10:08 am-10:04 pm

1 stop12h 56m

$342

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Wed 5/7

12:28 pm-6:41 pm

3 stops29h 13m

Lambert-St Louis

Sun 5/11

10:10 am-10:27 am

2 stops25h 17m

$394

San JoséChicago

SJO - ORD

SJOORD

San José Juan Santamaria Intl

Sat 7/19

5:52 am-12:20 am

1 stop17h 28m

Chicago O'Hare Intl

Tue 7/22

1:07 am-7:35 am

1 stop7h 28m

$401

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

Sat 5/24

1:00 pm-7:34 pm

Nonstop5h 34m

Chicago O'Hare Intl

Tue 5/27

7:10 am-7:37 pm

1 stop13h 27m

$431

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/31

Showing 1-10 of 38 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 $323). 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 April 2, 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 April 2, 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
9,823 reviews

Boarding

8.2

Overall

8.0

Comfort

7.9

Food

7.1

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Alaska Airlines
8.0
Very good
9,823 reviews
Alaska Airlines
8.0
Very good
9,823 reviews

Boarding

8.2

Overall

8.0

Comfort

7.9

Food

7.1

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Southwest
8.0
Very good
4,275 reviews
Alaska Airlines
8.0
Very good
9,823 reviews

Boarding

8.2

Overall

8.0

Comfort

7.9

Food

7.1

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Delta
8.0
Very good
7,899 reviews
Alaska Airlines
8.0
Very good
9,823 reviews

Boarding

8.2

Overall

8.0

Comfort

7.9

Food

7.1

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Copa Airlines
7.6
Good
1,400 reviews
Alaska Airlines
8.0
Very good
9,823 reviews

Boarding

8.2

Overall

8.0

Comfort

7.9

Food

7.1

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Aeromexico
7.5
Good
1,700 reviews
Alaska Airlines
8.0
Very good
9,823 reviews

Boarding

8.2

Overall

8.0

Comfort

7.9

Food

7.1

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

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 ($182), and Frontier ($208).

  • 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 $323). 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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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 April 2, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$202Average$386FlexibilityNo cancel feeOn-time65%
AviancaCheapest$290Average$470FlexibilityNo cancel feeOn-time71%
Copa AirlinesCheapest$326Average$560FlexibilityNo cancel feeOn-time70%
American AirlinesCheapest$340Average$496FlexibilityNo cancel feeOn-time71%
DeltaCheapest$434Average$649FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$438Average$732FlexibilityNo cancel feeOn-time69%

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