$172+ Cheap flights from Illinois to Costa Rica
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/6. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SJO
Dec 5 — Dec 121
Round-trip
1 adult, Economy
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Find cheap flights from Illinois to Costa Rica with Cheapflights
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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 November 5, 2026.
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 November 5, 2026.
This Trip.com deal was found by Cheapflights users on 10/31. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/233:50 pm -
1 stop22h 30m
Tue 12/13:20 pm -
1 stop23h 52m
Deal found 10/31![Air Canada logo]()
$390
This Air Canada deal was found by Cheapflights users on 11/1. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/168:40 pm -
1 stop17h 30m
Wed 12/163:20 pm -
1 stop23h 42m
Deal found 11/1![Air Canada logo]()
$415
This Air Canada deal was found by Cheapflights users on 10/31. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/78:40 pm -
1 stop17h 30m
Fri 12/113:10 pm -
1 stop17h 58m
Deal found 10/31![Air Canada logo]()
$420
This Avianca deal was found by Cheapflights users on 11/2. 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.
Mon 12/710:30 pm -
1 stop17h 50m
Sat 12/129:30 am -
1 stop11h 00m
Deal found 11/2![Avianca logo]()
$424
This Avianca deal was found by Cheapflights users on 11/2. 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.
Thu 11/1910:30 pm -
1 stop10h 20m
Wed 12/21:50 am -
1 stop18h 40m
Deal found 11/2![Avianca logo]()
$425
This Avianca deal was found by Cheapflights users on 11/1. 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 Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/32:20 pm -
1 stop18h 15m
Sun 12/61:50 am -
1 stop18h 40m
Deal found 11/1![Avianca logo]()
$427
This Avianca deal was found by Cheapflights users on 11/2. 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.
Thu 12/102:20 pm -
1 stop18h 15m
Tue 12/155:35 am -
1 stop7h 20m
Deal found 11/2![Avianca logo]()
$430
This Delta deal was found by Cheapflights users on 11/3. 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.
Sun 11/295:30 am -
1 stop16h 45m
Tue 12/82:37 pm -
1 stop9h 19m
Deal found 11/3![Delta logo]()
$439
This Delta deal was found by Cheapflights users on 11/3. 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.
Sun 11/295:30 am -
1 stop16h 45m
Wed 12/92:37 pm -
2 stops17h 22m
Deal found 11/3![Delta logo]()
$443
This Avianca deal was found by Cheapflights users on 11/3. 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 Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1910:30 pm -
1 stop17h 50m
Sat 11/211:55 am -
1 stop18h 35m
Deal found 11/3![Avianca logo]()
$444
This Avianca deal was found by Cheapflights users on 11/3. 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 Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/32:20 pm -
1 stop8h 55m
Tue 12/89:30 am -
1 stop11h 00m
Deal found 11/3![Avianca logo]()
$447
This FlightHub deal was found by Cheapflights users on 11/1. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/42:20 pm -
1 stop18h 15m
Fri 12/115:15 pm -
1 stop27h 15m
Deal found 11/1![Avianca logo]()
$450
Best flights from Illinois to Costa RicaDiscover carefully curated flight deals from Illinois to Costa Rica that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 5, 2026.
Discover carefully curated flight deals from Illinois to Costa Rica that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 5, 2026.
This Volaris deal was found by Cheapflights users on 11/4. 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 Volaris is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/612:53 pm -
1 stop9h 51m
Sat 3/133:00 pm -
1 stop19h 59m
Deal found 11/4![Multiple Airlines logo]()
$426
This Copa Airlines deal was found by Cheapflights users on 11/4. 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.
Tue 1/192:13 pm -
1 stop17h 09m
Thu 1/2810:01 am -
1 stop14h 06m
Deal found 11/4![Copa Airlines logo]()
$427
This Delta deal was found by Cheapflights users on 11/4. 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 1/217:00 am -
2 stops14h 49m
Mon 2/17:00 am -
1 stop13h 30m
Deal found 11/4![Delta logo]()
$463
This United Airlines deal was found by Cheapflights users on 11/4. 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 1/207:02 am -
Nonstop5h 13m
Wed 1/271:25 pm -
Nonstop5h 32m
Deal found 11/4![United Airlines logo]()
$501
This Southwest deal was found by Cheapflights users on 11/3. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/15:20 am -
1 stop8h 55m
Wed 3/33:25 pm -
2 stops14h 20m
Deal found 11/3![Southwest logo]()
$513
This JetBlue deal was found by Cheapflights users on 11/4. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/277:00 am -
1 stop7h 05m
Sat 2/63:10 pm -
1 stop8h 37m
Deal found 11/4![JetBlue logo]()
$628
This American Airlines deal was found by Cheapflights users on 11/3. 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.
Sun 1/176:15 am -
1 stop30h 15m
Wed 2/37:30 am -
2 stops14h 06m
Deal found 11/3![American Airlines logo]()
$645
This Alaska Airlines deal was found by Cheapflights users on 11/2. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/308:00 am -
2 stops36h 30m
Thu 2/48:33 am -
3 stops28h 42m
Deal found 11/2![Alaska Airlines logo]()
$742
This KAYAK deal was found by Cheapflights users on 11/1. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/216:03 pm -
2 stops18h 21m
Sun 2/283:16 pm -
2 stops19h 35m
Deal found 11/1![GOL logo]()
$831
This Delta deal was found by Cheapflights users on 11/4. 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.
Sun 1/246:00 am -
1 stop15h 49m
Sat 1/302:23 pm -
2 stops22h 38m
Deal found 11/4![Delta logo]()
$510
This United Airlines deal was found by Cheapflights users on 11/3. 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.
Wed 2/37:02 am -
Nonstop5h 13m
Sat 2/61:15 am -
1 stop10h 00m
Deal found 11/3![United Airlines logo]()
$584
This Southwest deal was found by Cheapflights users on 11/2. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/127:20 am -
1 stop6h 55m
Mon 4/192:10 pm -
1 stop8h 15m
Deal found 11/2![Southwest logo]()
$628
This JetBlue deal was found by Cheapflights users on 11/4. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/27:00 am -
1 stop7h 05m
Sun 2/73:10 pm -
1 stop8h 37m
Deal found 11/4![JetBlue logo]()
$639
This United Airlines deal was found by Cheapflights users on 11/1. 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.
Thu 1/148:58 am -
1 stop10h 55m
Mon 1/181:25 pm -
Nonstop5h 32m
Deal found 11/1![United Airlines logo]()
$585
This Southwest deal was found by Cheapflights users on 11/2. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/218:50 pm -
2 stops17h 25m
Mon 3/13:10 pm -
2 stops19h 05m
Deal found 11/2![Southwest logo]()
$628
This Delta deal was found by Cheapflights users on 11/1. 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.
Mon 3/17:00 am -
2 stops15h 05m
Sat 3/67:05 am -
1 stop11h 43m
Deal found 11/1![Delta logo]()
$631
This American Airlines deal was found by Cheapflights users on 10/31. 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 2/15:04 pm -
2 stops21h 52m
Sun 2/1412:25 am -
1 stop11h 31m
Deal found 10/31![American Airlines logo]()
$695
This United Airlines deal was found by Cheapflights users on 11/4. 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.
Fri 2/127:02 am -
Nonstop5h 13m
Thu 2/182:25 pm -
1 stop10h 20m
Deal found 11/4![United Airlines logo]()
$604
This Alaska Airlines deal was found by Cheapflights users on 11/1. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/308:00 am -
2 stops36h 30m
Sat 2/66:05 pm -
2 stops29h 54m
Deal found 11/1![Alaska Airlines logo]()
$745
This Delta deal was found by Cheapflights users on 11/1. 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.
Tue 4/277:35 pm -
2 stops17h 20m
Wed 5/51:20 pm -
1 stop9h 30m
Deal found 11/1![Delta logo]()
$631
This American Airlines deal was found by Cheapflights users on 11/4. 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 2/163:13 pm -
2 stops23h 10m
Thu 2/2512:25 am -
1 stop14h 18m
Deal found 11/4![American Airlines logo]()
$695
This Southwest deal was found by Cheapflights users on 11/4. 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.
Sun 2/75:20 am -
1 stop8h 55m
Sun 2/143:25 pm -
2 stops14h 20m
Deal found 11/4![Southwest logo]()
$633
This American Airlines deal was found by Cheapflights users on 11/4. 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 3/13:13 pm -
2 stops21h 16m
Thu 3/1112:25 am -
1 stop14h 18m
Deal found 11/4![American Airlines logo]()
$695
This United Airlines deal was found by Cheapflights users on 10/31. 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 2/177:02 am -
Nonstop5h 13m
Tue 2/238:45 am -
1 stop12h 44m
Deal found 10/31![United Airlines logo]()
$641
This Delta deal was found by Cheapflights users on 11/3. 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.
Fri 1/16:00 am -
1 stop6h 45m
Tue 1/123:25 pm -
1 stop17h 15m
Deal found 11/3![Delta logo]()
$655
This Southwest deal was found by Cheapflights users on 11/1. 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.
Fri 2/195:20 am -
1 stop8h 55m
Sat 2/271:05 pm -
1 stop10h 00m
Deal found 11/1![Southwest logo]()
$679
This American Airlines deal was found by Cheapflights users on 11/4. 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 2/166:56 pm -
2 stops17h 33m
Fri 2/261:52 pm -
2 stops21h 48m
Deal found 11/4![American Airlines logo]()
$699
This Alaska Airlines deal was found by Cheapflights users on 10/31. 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.
Fri 2/192:54 pm -
2 stops29h 36m
Sun 2/287:35 pm -
2 stops28h 24m
Deal found 10/31![Alaska Airlines logo]()
$853
This United Airlines deal was found by Cheapflights users on 11/1. 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.
Sun 12/65:45 am -
1 stop7h 37m
Sat 12/121:55 pm -
Nonstop5h 33m
Deal found 11/1![United Airlines logo]()
$648
This Delta deal was found by Cheapflights users on 11/3. 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.
Sat 1/306:00 am -
1 stop6h 45m
Thu 2/42:00 pm -
1 stop9h 55m
Deal found 11/3![Delta logo]()
$655
Last-minute flights from Illinois to Costa RicaDiscover last-minute flight deals from Illinois to Costa Rica. Data last updated November 5, 2026 and is based on user searches.
Discover last-minute flight deals from Illinois to Costa Rica. Data last updated November 5, 2026 and is based on user searches.
This Air Canada deal was found by Cheapflights users on 11/1. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/168:40 pm -
1 stop17h 30m
Wed 12/163:20 pm -
1 stop23h 42m
Deal found 11/1![Air Canada logo]()
$415
This Avianca deal was found by Cheapflights users on 11/2. 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.
Thu 11/1910:30 pm -
1 stop10h 20m
Wed 12/21:50 am -
1 stop18h 40m
Deal found 11/2![Avianca logo]()
$425
This Avianca deal was found by Cheapflights users on 11/3. 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 Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1910:30 pm -
1 stop17h 50m
Sat 11/211:55 am -
1 stop18h 35m
Deal found 11/3![Avianca logo]()
$444
This Trip.com deal was found by Cheapflights users on 10/31. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/233:50 pm -
1 stop22h 30m
Tue 12/13:20 pm -
1 stop23h 52m
Deal found 10/31![Air Canada logo]()
$390
This Delta deal was found by Cheapflights users on 11/3. 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.
Sun 11/295:30 am -
1 stop16h 45m
Wed 12/97:00 am -
1 stop16h 56m
Deal found 11/3![Delta logo]()
$439
This Avianca deal was found by Cheapflights users on 11/1. 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 Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/32:20 pm -
1 stop18h 15m
Sun 12/61:50 am -
1 stop18h 40m
Deal found 11/1![Avianca logo]()
$427
This Avianca deal was found by Cheapflights users on 11/3. 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 Avianca is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/32:20 pm -
1 stop8h 55m
Tue 12/89:30 am -
1 stop11h 00m
Deal found 11/3![Avianca logo]()
$447
This FlightHub deal was found by Cheapflights users on 11/1. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/42:20 pm -
1 stop23h 35m
Sat 12/129:30 am -
1 stop11h 00m
Deal found 11/1![Avianca logo]()
$450
This Air Canada deal was found by Cheapflights users on 10/31. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/78:40 pm -
1 stop17h 30m
Fri 12/113:10 pm -
1 stop17h 58m
Deal found 10/31![Air Canada logo]()
$420
This Avianca deal was found by Cheapflights users on 11/2. 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.
Mon 12/710:30 pm -
1 stop17h 50m
Sat 12/129:30 am -
1 stop11h 00m
Deal found 11/2![Avianca logo]()
$424
This Air Canada deal was found by Cheapflights users on 11/2. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/73:45 pm -
1 stop22h 35m
Sun 12/133:10 pm -
1 stop17h 58m
Deal found 11/2![Air Canada logo]()
$425
This Avianca deal was found by Cheapflights users on 11/2. 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.
Thu 12/102:20 pm -
1 stop18h 15m
Tue 12/155:35 am -
1 stop7h 20m
Deal found 11/2![Avianca logo]()
$430
One-way flights from Illinois to Costa RicaSearch for one-way flight options from Illinois to Costa Rica. Find affordable one-way fares based on user searches. Data last updated November 5, 2026.
Search for one-way flight options from Illinois to Costa Rica. Find affordable one-way fares based on user searches. Data last updated November 5, 2026.
This Mytrip deal was found by Cheapflights users on 10/31. 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.
Sat 2/612:53 pm -
1 stop9h 51m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/31![Multiple Airlines logo]()
$172
This FlightHub deal was found by Cheapflights users on 11/2. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/2012:53 pm -
1 stop9h 51m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/2![Multiple Airlines logo]()
$176
This Volaris deal was found by Cheapflights users on 11/4. 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 Volaris is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/32:24 am -
1 stop22h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/4![Multiple Airlines logo]()
$196
This Air Canada deal was found by Cheapflights users on 11/2. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/245:58 pm -
2 stops44h 22m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/2![Air Canada logo]()
$197
This Air Canada deal was found by Cheapflights users on 11/4. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/71:55 pm -
1 stop24h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/4![Air Canada logo]()
$198
This Kissandfly.com deal was found by Cheapflights users on 10/31. 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/412:53 pm -
1 stop9h 51m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/31![Multiple Airlines logo]()
$207
This FlightHub deal was found by Cheapflights users on 11/4. 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.
Thu 2/2512:53 pm -
1 stop9h 51m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/4![Multiple Airlines logo]()
$223
This FlightHub deal was found by Cheapflights users on 11/2. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/251:29 pm -
1 stop10h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/2![Multiple Airlines logo]()
$225
This FlightHub deal was found by Cheapflights users on 11/1. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/201:29 pm -
1 stop10h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/1![Multiple Airlines logo]()
$226
This Air Canada deal was found by Cheapflights users on 11/3. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/214:30 pm -
1 stop21h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/3![Air Canada logo]()
$234
This Frontier deal was found by Cheapflights users on 11/1. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/25:58 am -
1 stop8h 18m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/1![Frontier logo]()
$242
This FlightHub deal was found by Cheapflights users on 11/1. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/313:57 pm -
1 stop19h 08m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/1![Frontier logo]()
$243
Find flight deals from Illinois to Costa Rica
Keep the following information in mind while searching for Illinois to Costa Rica flight deals. Data was last updated November 5, 2026.
Most accurate provider | Ovago 3 stars |
|---|---|
Most trusted provider | Ovago 3 stars |
Round-trip from | $390 (Trip.com) |
One-way from | $172 (Mytrip) |
Popular in | December |
Cheapest in | February |
Average price | $538 |
Good round-trip deal | $574 or less |
Good one-way deal | $283 or less |
Cheapflights Fare Finder
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 7,457,451 searches. Data last updated November 5, 2026.
Use the filters below to find and compare flights from Illinois to Costa Rica that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
ChicagoLiberia
ORD Chicago O'Hare Intl - LIR Liberia
ORDLIR
Chicago O'Hare Intl
Tue 12/8
1:55 pm-2:20 pm
2 stops24h 25m
Liberia
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$197
ChicagoLiberia
ORD Chicago O'Hare Intl - LIR Liberia
ORDLIR
Chicago O'Hare Intl
Wed 12/30
10:03 am-3:20 pm
Nonstop5h 17m
Liberia
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$260
ChicagoLiberia
MDW Chicago Midway - LIR Liberia
MDWLIR
Chicago Midway
Mon 1/4
6:00 am-12:45 pm
1 stop6h 45m
Liberia
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$264
ChicagoLiberia
ORD Chicago O'Hare Intl - LIR Liberia
ORDLIR
Chicago O'Hare Intl
Sat 1/2
7:00 am-2:04 pm
1 stop7h 04m
Liberia
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$264
ChicagoLiberia
ORD Chicago O'Hare Intl - LIR Liberia
ORDLIR
Chicago O'Hare Intl
Tue 12/29
5:25 am-12:45 pm
1 stop7h 20m
Liberia
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$274
ChicagoLiberia
ORD Chicago O'Hare Intl - LIR Liberia
ORDLIR
Chicago O'Hare Intl
Tue 11/24
8:40 pm-2:10 pm
1 stop17h 30m
Liberia
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$297
ChicagoLiberia
MDW Chicago Midway - LIR Liberia
MDWLIR
Chicago Midway
Sun 12/6
8:25 pm-1:50 pm
2 stops17h 25m
Liberia
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$318
ChicagoLiberia
MDW Chicago Midway - LIR Liberia
MDWLIR
Chicago Midway
Fri 2/19
5:20 am-2:15 pm
1 stop8h 55m
Liberia
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$322
ChicagoSan José
MDW Chicago Midway - SJO San José Juan Santamaria Intl
MDWSJO
Chicago Midway
Fri 4/30
10:15 am-7:00 pm
2 stops9h 45m
San José Juan Santamaria Intl
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$323
ChicagoLiberia
ORD Chicago O'Hare Intl - LIR Liberia
ORDLIR
Chicago O'Hare Intl
Tue 12/15
5:30 pm-11:54 am
1 stop18h 24m
Liberia
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$325
Showing 1-10 of 60 resultsSorted by cheapest first
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.
ORD-SJO
MDW-LIR
ORD-LIR
PIA-SJO
MLI-LIR
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 Illinois to Costa Rica
USIL-CR0
ORD-SJO
MDW-LIR
ORD-LIR
PIA-SJO
What is the cheapest month to book a flight from Illinois to Costa Rica?
Currently, February is the cheapest month in which you can book a flight from Illinois to Costa Rica (average of $528). Flying from Illinois to Costa Rica in December is currently the most expensive (average of $795). 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 November 5, 2026.
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.
How far ahead should I book a flight from Illinois to Costa Rica?
The price you pay for your flight from Illinois to Costa Rica may vary depending on when you book. For the best chance of a lower fare, look to book 24 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
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.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
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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.
Complete your trip
Complete your trip to Costa Rica by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Illinois to Costa Rica by cabin class
Find flights from Illinois to Costa Rica, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Illinois and Costa Rica flights
Browse other Illinois and Costa Rica flight options. Last updated on November 5, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Find a return flight route from Costa Rica
Find the right flight back to Illinois after your stay in Costa Rica
Illinois to Costa Rica flights
Consider these flights traveling from Illinois to Costa Rica.
Top 9 airlines flying from Illinois to Costa Rica
Discover the top 9 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 7,457,451 searches. Data last updated November 5, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$149 | Average$565 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$303 | Average$545 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$324 | Average$578 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$364 | Average$640 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$371 | Average$626 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$378 | Average$601 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$384 | Average$825 | FlexibilityNo cancel fee | On-time74% | |
| Cheapest$392 | Average$671 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$395 | Average$658 | FlexibilityNo cancel fee | On-time63% |