$160+ 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 3/8. Fares are subject to change and may not be available on all flights or dates of travel.
Find cheap flights from Illinois to Costa Rica 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 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 enero 21, 2025.
Round-trip from | $340 (FlightHub) |
|---|---|
One-way from | $160 (Cheapflightsfares) |
Good round-trip deal | $713 or less |
Good one-way deal | $294 or less |
Find flight deals from Illinois to Costa Rica
Cheapest flights from Illinois to Costa RicaExplore 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 enero 21, 2025.
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 enero 21, 2025.
This FlightHub deal was found by Cheapflights users on 1/20. 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.
This Mytrip deal was found by Cheapflights users on 1/20. 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 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 1/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This CheapOair deal was found by Cheapflights users on 1/20. 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.
This Kiwi.com deal was found by Cheapflights users on 1/19. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This FlightHub deal was found by Cheapflights users on 1/21. 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 FlightHub 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 1/20. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This United Airlines deal was found by Cheapflights users on 1/21. 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 Airlines 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 1/21. 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.
This Southwest deal was found by Cheapflights users on 1/21. 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.
This American Airlines deal was found by Cheapflights users on 1/20. 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 American Airlines 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 1/21. 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.
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 2,558,603 searches. Data last updated enero 21, 2025.
Fly from
Fly to
Route
Depart
Return
Price
St. LouisSan José
STL - SJO
STLSJO
Lambert-St Louis
mar. 4/1
5:17 pm-11:50 pm
1 stop7h 33m
San José Juan Santamaria Intl
lun. 4/7
12:50 am-4:22 pm
1 stop14h 32m
ChicagoSan José
ORD - SJO
ORDSJO
Chicago O'Hare Intl
sáb. 3/8
7:42 pm-11:21 am
1 stop15h 39m
San José Juan Santamaria Intl
mié. 3/12
12:26 pm-9:44 am
2 stops20h 18m
ChicagoSan José
ORD - SJO
ORDSJO
Chicago O'Hare Intl
sáb. 3/1
8:44 pm-11:24 am
1 stop14h 40m
San José Juan Santamaria Intl
lun. 3/10
12:50 am-4:27 pm
1 stop14h 37m
St. LouisSan José
STL - SJO
STLSJO
Lambert-St Louis
mar. 2/18
4:00 pm-12:20 pm
1 stop20h 20m
San José Juan Santamaria Intl
mar. 2/25
12:29 pm-11:43 pm
1 stop11h 14m
ChicagoSan José
MDW - SJO
MDWSJO
Chicago Midway
dom. 2/23
12:43 pm-11:24 am
1 stop22h 41m
San José Juan Santamaria Intl
sáb. 3/1
12:55 pm-10:04 pm
1 stop9h 09m
ChicagoSan José
MDW - SJO
MDWSJO
Chicago Midway
vie. 2/21
6:48 pm-11:31 am
1 stop16h 43m
San José Juan Santamaria Intl
sáb. 3/1
12:55 pm-10:04 pm
1 stop9h 09m
ChicagoSan José
ORD - SJO
ORDSJO
Chicago O'Hare Intl
vie. 2/7
1:35 pm-12:15 am
1 stop10h 40m
San José Juan Santamaria Intl
jue. 2/13
2:15 am-12:15 pm
1 stop10h 00m
St. LouisSan José
STL - SJO
STLSJO
Lambert-St Louis
mar. 4/15
7:19 am-1:05 pm
1 stop6h 46m
San José Juan Santamaria Intl
mié. 4/30
11:59 pm-9:01 am
1 stop8h 02m
St. LouisSan José
STL - SJO
STLSJO
Lambert-St Louis
sáb. 5/10
6:15 am-12:26 pm
1 stop7h 11m
San José Juan Santamaria Intl
sáb. 5/17
6:35 am-4:33 pm
1 stop8h 58m
St. LouisLiberia
STL - LIR
STLLIR
Lambert-St Louis
dom. 4/20
5:26 am-1:05 pm
1 stop8h 39m
Liberia
jue. 4/24
2:05 pm-9:01 am
1 stop17h 56m
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.
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 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 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 enero 21, 2025.
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 enero 21, 2025.
Get a feel of what it's like to fly with American Airlines, United Airlines and Spirit Airlines 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.
Crew
Entertainment
Overall
Boarding
Food
Comfort
Reviews
We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.
Crew
Entertainment
Overall
Boarding
Food
Comfort
Reviews
We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.
Crew
Entertainment
Overall
Boarding
Food
Comfort
Reviews
We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.
Crew
Entertainment
Overall
Boarding
Food
Comfort
Reviews
We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.
Crew
Entertainment
Overall
Boarding
Food
Comfort
Reviews
We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.
Crew
Entertainment
Overall
Boarding
Food
Comfort
Reviews
We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.
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.
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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.
Top 8 airlines flying from Illinois to Costa Rica
Discover the top 8 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 2,558,603 searches. Data last updated enero 21, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$239 | Average$389 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$293 | Average$468 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$387 | Average$635 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$408 | Average$835 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$422 | Average$727 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$430 | Average$646 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$479 | Average$710 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$581 | Average$843 | FlexibilityNo cancel fee | On-time69% |