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$134+ Cheap flights from Illinois to Costa Rica

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 2/21. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SJO
nov. 26 — dic. 31
mar. 11/26
mar. 12/3
1 adult, Economy
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Cheap flight deals from Illinois to Costa Rica

Discover tips and strategies to find the most affordable flight options for your journey from Illinois (USIL) to Costa Rica (CR0). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated noviembre 21, 2024.

Find flight deals from Illinois to Costa Rica

Cheapest flights from Illinois to Costa Rica
Explore the most affordable flight options available from Illinois to Costa Rica. Find the lowest fares from popular airlines and budget airlines, with prices last updated on noviembre 21, 2024.

This FlightHub deal was found by Cheapflights users on 11/20. 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.
jue. 12/54:26 pmSTL - SJO
1 stop8h 27mSpirit Airlines
mié. 12/111:49 amSJO - STL
1 stop13h 32mSpirit Airlines
Deal found 11/20$354
This CheapOair deal was found by Cheapflights users on 11/20. 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.
lun. 12/97:45 pmORD - SJO
1 stop15h 43mSpirit Airlines
lun. 12/161:24 pmSJO - ORD
1 stop26h 42mSpirit Airlines
Deal found 11/20$359
This CheapOair deal was found by Cheapflights users on 11/19. 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.
vie. 12/65:10 amORD - SJO
2 stops30h 18mMultiple Airlines
lun. 12/92:53 pmSJO - ORD
1 stop13h 44mMultiple Airlines
Deal found 11/19$362
This Kiwi.com deal was found by Cheapflights users on 11/20. 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.
jue. 12/54:26 pmSTL - SJO
2 stops43h 02mMultiple Airlines
jue. 12/1212:23 pmSJO - STL
1 stop11h 01mMultiple Airlines
Deal found 11/20$412
This American Airlines deal was found by Cheapflights users on 11/21. 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.
jue. 12/125:15 amSTL - LIR
1 stop8h 55mAmerican Airlines
mar. 12/171:50 pmLIR - STL
1 stop9h 20mAmerican Airlines
Deal found 11/21$446
This Avianca deal was found by Cheapflights users on 11/20. 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.
mié. 12/42:35 pmORD - SJO
1 stop8h 20mAvianca
mié. 12/116:10 amSJO - ORD
1 stop7h 05mAvianca
Deal found 11/20$450
This Kiwi.com deal was found by Cheapflights users on 11/20. 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.
lun. 12/28:50 amMDW - SJO
1 stop26h 41mMultiple Airlines
sáb. 12/71:24 pmSJO - MDW
2 stops33h 21mMultiple Airlines
Deal found 11/20$514
This Southwest deal was found by Cheapflights users on 11/21. 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.
vie. 12/68:40 amMDW - SJO
2 stops12h 00mSouthwest
jue. 12/121:40 pmSJO - MDW
2 stops19h 00mSouthwest
Deal found 11/21$522
This United deal was found by Cheapflights users on 11/21. 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.
mar. 12/176:15 amSTL - LIR
1 stop6h 53mUnited Airlines
mar. 12/242:14 pmLIR - STL
1 stop9h 45mUnited Airlines
Deal found 11/21$585
This Delta deal was found by Cheapflights users on 11/21. 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.
sáb. 12/76:00 amMDW - SJO
1 stop6h 48mDelta
mié. 12/117:00 amSJO - MDW
1 stop9h 12mDelta
Deal found 11/21$625
This Delta deal was found by Cheapflights users on 11/21. 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.
vie. 12/136:00 amSTL - SJO
1 stop6h 48mDelta
dom. 12/227:05 amSJO - STL
1 stop9h 07mDelta
Deal found 11/21$656
This Alaska Airlines deal was found by Cheapflights users on 11/20. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 12/77:00 amORD - LIR
2 stops24h 31mAlaska Airlines
mié. 12/117:34 pmLIR - ORD
2 stops21h 25mAlaska Airlines
Deal found 11/20$741

Find flights from Illinois to Costa Rica within your budget

Customize your flight search to find flights from Illinois to Costa Rica 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 2,612,795 searches. Data last updated noviembre 21, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

St. LouisSan José

STL - SJO

STLSJO

Lambert-St Louis

mar. 1/28

3:48 pm-12:59 am

1 stop9h 11m

San José Juan Santamaria Intl

lun. 2/3

1:57 am-2:43 pm

1 stop12h 46m

$296

ChicagoSan José

ORD - SJO

ORDSJO

Chicago O'Hare Intl

sáb. 1/25

5:10 am-12:59 am

1 stop19h 49m

San José Juan Santamaria Intl

mar. 1/28

2:53 pm-4:37 am

1 stop13h 44m

$354

ChicagoSan José

ORD - SJO

ORDSJO

Chicago O'Hare Intl

sáb. 1/25

3:22 pm-12:59 am

1 stop9h 37m

San José Juan Santamaria Intl

mié. 1/29

1:31 pm-11:02 pm

1 stop9h 31m

$355

St. LouisSan José

STL - SJO

STLSJO

Lambert-St Louis

lun. 1/20

3:50 pm-9:25 pm

1 stop29h 35m

San José Juan Santamaria Intl

lun. 1/27

8:55 am-3:06 pm

1 stop30h 11m

$375

St. LouisSan José

STL - SJO

STLSJO

Lambert-St Louis

lun. 1/20

1:40 pm-11:09 pm

1 stop9h 29m

San José Juan Santamaria Intl

lun. 1/27

3:20 pm-11:46 pm

1 stop8h 26m

$386

ChicagoSan José

ORD - SJO

ORDSJO

Chicago O'Hare Intl

vie. 12/6

2:35 pm-11:20 pm

2 stops8h 45m

San José Juan Santamaria Intl

jue. 12/12

8:30 pm-1:15 pm

2 stops16h 45m

$401

St. LouisSan José

STL - SJO

STLSJO

Lambert-St Louis

jue. 12/5

5:02 pm-11:28 am

1 stop18h 26m

San José Juan Santamaria Intl

jue. 12/12

12:23 pm-11:24 pm

1 stop11h 01m

$418

St. LouisLiberia

STL - LIR

STLLIR

Lambert-St Louis

jue. 12/12

5:15 am-2:10 pm

1 stop8h 55m

Liberia

mar. 12/17

1:50 pm-11:10 pm

1 stop9h 20m

$446

ChicagoSan José

MDW - SJO

MDWSJO

Chicago Midway

vie. 2/14

6:38 pm-11:40 am

1 stop17h 02m

San José Juan Santamaria Intl

sáb. 2/22

1:00 pm-10:04 pm

1 stop9h 04m

$458

St. LouisLiberia

STL - LIR

STLLIR

Lambert-St Louis

jue. 1/23

6:00 am-2:36 pm

1 stop8h 36m

Liberia

mié. 1/29

4:01 pm-11:37 pm

1 stop7h 36m

$472

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/21

Showing 1-10 of 60 results
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Best time to book a flight from Illinois to Costa Rica

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

Travel insights for flights from Illinois to Costa Rica

Get recent, data-driven insights about flights from Illinois to Costa Rica including ideal travel times, pricing trends, and more.

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

Currently, September is the cheapest month in which you can book a flight from Illinois to Costa Rica (average of $398). Flying from Illinois to Costa Rica in July is currently the most expensive (average of $531). 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 CR?

Find hourly flight availability from Illinois to Costa Rica. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated noviembre 21, 2024.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Illinois to Costa Rica as you normally would.

Rainfall in Costa Rica by month

Plan your trip to Costa Rica by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Costa Rica 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 Costa Rica when rainfall is around 0.0 in.

Temperature in Costa Rica by month

Plan your trip to Costa Rica by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Costa Rica, 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 Costa Rica

Get insights into the airlines that provide service to Costa Rica. 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 Costa Rica. Reviews last updated noviembre 21, 2024.
Get a feel of what it's like to fly with Spirit Airlines, Avianca and Southwest from Illinois to Costa Rica by reading reviews from past customers. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
5,005 reviews

Entertainment

7.7

Boarding

8.2

Comfort

8.1

Crew

8.7

Overall

8.1

Food

7.2

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

Southwest
8.1
Very good
5,005 reviews
Southwest
8.1
Very good
5,005 reviews

Entertainment

7.7

Boarding

8.2

Comfort

8.1

Crew

8.7

Overall

8.1

Food

7.2

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

Delta
8.0
Very good
8,755 reviews
Southwest
8.1
Very good
5,005 reviews

Entertainment

7.7

Boarding

8.2

Comfort

8.1

Crew

8.7

Overall

8.1

Food

7.2

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

Alaska Airlines
8.0
Very good
9,464 reviews
Southwest
8.1
Very good
5,005 reviews

Entertainment

7.7

Boarding

8.2

Comfort

8.1

Crew

8.7

Overall

8.1

Food

7.2

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

Copa Airlines
7.8
Good
1,779 reviews
Southwest
8.1
Very good
5,005 reviews

Entertainment

7.7

Boarding

8.2

Comfort

8.1

Crew

8.7

Overall

8.1

Food

7.2

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

SWISS
7.6
Good
1,636 reviews
Southwest
8.1
Very good
5,005 reviews

Entertainment

7.7

Boarding

8.2

Comfort

8.1

Crew

8.7

Overall

8.1

Food

7.2

Reviews

1 / 10

Great service throughout our flight. Easy boarding with early bird check in

Related info for your journey

Find useful and relevant information for your journey from Illinois to Costa Rica. 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 Illinois to Costa Rica one-way?

    For one-way options, check prices for Spirit Airlines. According to our data, you can fly for as low as $136. Users have also found prices from $200 and $202 on Avianca and Southwest, respectively.

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

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

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

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

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

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

    Currently, September is the cheapest month in which you can book a flight from Illinois to Costa Rica (average of $398). Flying from Illinois to Costa Rica in July is currently the most expensive (average of $531). 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 Illinois to Costa Rica

See prices for flight routes from nearby airports that may be better suited for you.
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Top 10 airlines flying from Illinois to Costa Rica

Discover the top 10 airlines that operate flights from Illinois to Costa Rica. 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 2,612,795 searches. Data last updated noviembre 21, 2024.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$237Average$384FlexibilityNo cancel feeOn-time65%
AviancaCheapest$238Average$412FlexibilityNo cancel feeOn-time71%
American AirlinesCheapest$338Average$694FlexibilityNo cancel feeOn-time71%
JetBlueCheapest$345Average$649FlexibilityNo cancel feeOn-time62%
Copa AirlinesCheapest$406Average$613FlexibilityNo cancel feeOn-time70%
DeltaCheapest$408Average$853FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$479Average$600FlexibilityNo cancel feeOn-time63%
Air CanadaCheapest$479Average$651FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$581Average$850FlexibilityNo cancel feeOn-time69%
AeromexicoCheapest$676Average$736FlexibilityNo cancel feeOn-timeN/A
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