$139+ 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 3/7. Fares are subject to change and may not be available on all flights or dates of travel.
SJO — ORD
Mar 11 — Mar 181
1 adult, Economy
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Find cheap flights from Costa Rica to Illinois 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
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Cheapest flights from Costa Rica to IllinoisExplore 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 February 9, 2026.
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 February 9, 2026.
This OneTravel deal was found by Cheapflights users on 2/7. 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 OneTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/2612:35 pm
SJO
- ORD
2 stops11h 12m
Spirit Airlines
Sun 3/18:59 am
ORD
- SJO
2 stops26h 41m
Spirit Airlines
Deal found 2/7![Spirit Airlines logo]()
$296
This Kiwi.com deal was found by Cheapflights users on 2/8. 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 3/612:35 pm
SJO
- MDW
1 stop8h 18m
Multiple Airlines
Tue 3/1011:19 am
MDW
- SJO
1 stop24h 21m
Multiple Airlines
Deal found 2/8![Multiple Airlines logo]()
$297
This Kiwi.com deal was found by Cheapflights users on 2/6. 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.
Wed 5/612:31 pm
SJO
- ORD
1 stop10h 10m
Multiple Airlines
Tue 5/128:25 am
ORD
- SJO
2 stops27h 57m
Multiple Airlines
Deal found 2/6![Multiple Airlines logo]()
$297
This Cheapflightsfares deal was found by Cheapflights users on 2/8. 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.
Sat 2/211:31 pm
SJO
- ORD
1 stop7h 42m
Spirit Airlines
Sat 2/284:43 pm
ORD
- SJO
2 stops18h 57m
Spirit Airlines
Deal found 2/8![Spirit Airlines logo]()
$298
This Kiwi.com deal was found by Cheapflights users on 2/8. 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.
Tue 3/1012:31 pm
SJO
- ORD
1 stop21h 05m
Multiple Airlines
Tue 3/1710:55 am
ORD
- SJO
3 stops13h 35m
Multiple Airlines
Deal found 2/8![Multiple Airlines logo]()
$299
This CheapOair deal was found by Cheapflights users on 2/6. 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.
Tue 3/2412:19 pm
SJO
- ORD
1 stop9h 58m
Spirit Airlines
Tue 3/314:36 pm
ORD
- SJO
2 stops19h 06m
Spirit Airlines
Deal found 2/6![Spirit Airlines logo]()
$300
This eDestinos deal was found by Cheapflights users on 2/7. 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.
Sat 2/141:31 pm
SJO
- ORD
1 stop10h 16m
Spirit Airlines
Sat 2/214:43 pm
ORD
- SJO
2 stops18h 57m
Spirit Airlines
Deal found 2/7![Spirit Airlines logo]()
$301
This FlightHub deal was found by Cheapflights users on 2/5. 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 2/271:31 pm
SJO
- ORD
1 stop10h 16m
Spirit Airlines
Sat 3/78:16 pm
ORD
- SJO
2 stops14h 24m
Spirit Airlines
Deal found 2/5![Spirit Airlines logo]()
$302
This Orbitz deal was found by Cheapflights users on 2/7. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/912:31 pm
SJO
- ORD
1 stop7h 42m
Spirit Airlines
Mon 3/164:36 pm
ORD
- SJO
2 stops19h 06m
Spirit Airlines
Deal found 2/7![Spirit Airlines logo]()
$303
This eDestinos deal was found by Cheapflights users on 2/7. 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.
Thu 2/191:31 pm
SJO
- ORD
1 stop7h 42m
Spirit Airlines
Wed 4/84:36 pm
ORD
- SJO
2 stops19h 06m
Spirit Airlines
Deal found 2/7![Spirit Airlines logo]()
$304
This Kiwi.com deal was found by Cheapflights users on 2/7. 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.
Mon 4/1312:19 pm
SJO
- ORD
1 stop21h 58m
Multiple Airlines
Wed 4/151:27 pm
ORD
- SJO
1 stop22h 55m
Multiple Airlines
Deal found 2/7![Multiple Airlines logo]()
$305
This Kiwi.com deal was found by Cheapflights users on 2/7. 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.
Wed 2/257:45 am
SJO
- ORD
1 stop25h 54m
Multiple Airlines
Sat 2/288:16 pm
ORD
- SJO
1 stop16h 06m
Multiple Airlines
Deal found 2/7![Multiple Airlines logo]()
$307
Best flights from Costa Rica to IllinoisDiscover carefully curated flight deals from Costa Rica to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 9, 2026.
Discover carefully curated flight deals from Costa Rica to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 9, 2026.
This Cheapflightsfares deal was found by Cheapflights users on 2/8. 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.
Sat 2/211:31 pm
SJO
- ORD
1 stop7h 42m
Spirit Airlines
Sat 2/284:43 pm
ORD
- SJO
2 stops18h 57m
Spirit Airlines
Deal found 2/8![Spirit Airlines logo]()
$298
This United Airlines deal was found by Cheapflights users on 2/8. 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.
Tue 3/101:05 pm
SJO
- ORD
Nonstop5h 30m
United Airlines
Tue 3/177:35 am
ORD
- SJO
1 stop14h 57m
United Airlines
Deal found 2/8![United Airlines logo]()
$318
This Kiwi.com deal was found by Cheapflights users on 2/8. 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 3/612:35 pm
SJO
- STL
1 stop18h 27m
Multiple Airlines
Mon 3/94:51 pm
STL
- SJO
1 stop18h 49m
Multiple Airlines
Deal found 2/8![Multiple Airlines logo]()
$322
This Copa Airlines deal was found by Cheapflights users on 2/5. 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.
Mon 3/236:08 pm
SJO
- ORD
1 stop18h 23m
Copa Airlines
Mon 3/303:28 pm
ORD
- SJO
1 stop17h 52m
Copa Airlines
Deal found 2/5![Copa Airlines logo]()
$332
This Delta deal was found by Cheapflights users on 2/8. 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 3/67:00 am
SJO
- MDW
1 stop15h 31m
Delta
Wed 3/1112:47 pm
MDW
- SJO
1 stop9h 28m
Delta
Deal found 2/8![Delta logo]()
$334
This American Airlines deal was found by Cheapflights users on 2/8. 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.
Fri 3/611:24 am
SJO
- STL
2 stops12h 11m
American Airlines
Mon 3/99:37 am
STL
- SJO
2 stops10h 56m
American Airlines
Deal found 2/8![American Airlines logo]()
$350
This Southwest deal was found by Cheapflights users on 2/6. 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.
Wed 4/221:10 pm
SJO
- MDW
1 stop8h 55m
Southwest
Thu 4/3012:10 pm
MDW
- SJO
1 stop7h 50m
Southwest
Deal found 2/6![Southwest logo]()
$418
This Booking.com deal was found by Cheapflights users on 2/6. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/232:55 pm
LIR
- ORD
1 stop25h 55m
Air Canada
Wed 4/299:50 am
ORD
- LIR
1 stop28h 50m
Air Canada
Deal found 2/6![Air Canada logo]()
$463
This Expedia deal was found by Cheapflights users on 2/6. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/2311:20 am
LIR
- ORD
2 stops18h 20m
Alaska Airlines
Wed 4/298:50 am
ORD
- LIR
3 stops22h 30m
Alaska Airlines
Deal found 2/6![Alaska Airlines logo]()
$581
This Orbitz deal was found by Cheapflights users on 2/8. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/21:40 pm
LIR
- ORD
2 stops22h 09m
JetBlue
Fri 3/612:41 pm
ORD
- LIR
2 stops22h 34m
JetBlue
Deal found 2/8![JetBlue logo]()
$607
This Mytrip deal was found by Cheapflights users on 2/8. 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.
Fri 2/271:31 pm
SJO
- ORD
1 stop10h 16m
Spirit Airlines
Tue 3/310:19 am
ORD
- SJO
3 stops25h 21m
Spirit Airlines
Deal found 2/8![Spirit Airlines logo]()
$308
This United Airlines deal was found by Cheapflights users on 2/5. 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 3/111:05 pm
SJO
- ORD
Nonstop5h 30m
United Airlines
Wed 3/189:15 pm
ORD
- SJO
1 stop25h 17m
United Airlines
Deal found 2/5![United Airlines logo]()
$323
This Kiwi.com deal was found by Cheapflights users on 2/6. 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.
Wed 3/41:31 pm
SJO
- MDW
2 stops26h 45m
Multiple Airlines
Sun 3/86:00 am
MDW
- SJO
1 stop10h 30m
Multiple Airlines
Deal found 2/6![Multiple Airlines logo]()
$349
This Delta deal was found by Cheapflights users on 2/6. 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 2/197:00 am
SJO
- MDW
1 stop15h 31m
Delta
Tue 2/249:34 am
MDW
- SJO
2 stops12h 28m
Delta
Deal found 2/6![Delta logo]()
$359
This United Airlines deal was found by Cheapflights users on 2/7. 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 2/272:05 pm
SJO
- ORD
Nonstop5h 30m
United Airlines
Tue 3/315:15 pm
ORD
- SJO
1 stop17h 56m
United Airlines
Deal found 2/7![United Airlines logo]()
$329
This Cheapflightsfares deal was found by Cheapflights users on 2/6. 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 4/1612:31 pm
SJO
- ORD
1 stop10h 10m
Spirit Airlines
Thu 4/235:32 pm
ORD
- SJO
1 stop18h 50m
Spirit Airlines
Deal found 2/6![Spirit Airlines logo]()
$329
This American Airlines deal was found by Cheapflights users on 2/8. 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.
Fri 5/111:35 pm
SJO
- STL
1 stop18h 55m
American Airlines
Tue 5/127:00 am
STL
- SJO
2 stops13h 07m
American Airlines
Deal found 2/8![American Airlines logo]()
$367
This United Airlines deal was found by Cheapflights users on 2/5. 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 2/122:05 pm
SJO
- ORD
Nonstop5h 30m
United Airlines
Tue 2/249:15 am
ORD
- SJO
1 stop10h 38m
United Airlines
Deal found 2/5![United Airlines logo]()
$329
This Southwest deal was found by Cheapflights users on 2/6. 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 4/239:00 am
SJO
- MDW
2 stops12h 45m
Southwest
Wed 4/2910:05 am
MDW
- SJO
2 stops9h 55m
Southwest
Deal found 2/6![Southwest logo]()
$422
This American Airlines deal was found by Cheapflights users on 2/8. 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 4/226:30 am
SJO
- STL
2 stops14h 47m
American Airlines
Wed 4/2912:25 pm
STL
- SJO
2 stops10h 11m
American Airlines
Deal found 2/8![American Airlines logo]()
$384
This United Airlines deal was found by Cheapflights users on 2/7. 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 2/272:05 pm
SJO
- ORD
Nonstop5h 30m
United Airlines
Wed 4/88:51 am
ORD
- SJO
1 stop11h 46m
United Airlines
Deal found 2/7![United Airlines logo]()
$329
This Delta deal was found by Cheapflights users on 2/7. 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 2/197:00 am
SJO
- MDW
1 stop15h 31m
Delta
Wed 4/812:47 pm
MDW
- SJO
1 stop9h 28m
Delta
Deal found 2/7![Delta logo]()
$426
This Southwest deal was found by Cheapflights users on 2/7. 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.
Wed 5/61:10 pm
SJO
- MDW
1 stop8h 55m
Southwest
Thu 5/1412:10 pm
MDW
- SJO
1 stop7h 50m
Southwest
Deal found 2/7![Southwest logo]()
$434
This United Airlines deal was found by Cheapflights users on 2/7. 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 2/272:05 pm
SJO
- ORD
Nonstop5h 30m
United Airlines
Mon 3/27:39 am
ORD
- SJO
Nonstop5h 17m
United Airlines
Deal found 2/7![United Airlines logo]()
$329
This Expedia deal was found by Cheapflights users on 2/6. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/2311:20 am
LIR
- ORD
2 stops18h 20m
Multiple Airlines
Wed 4/295:57 pm
ORD
- LIR
1 stop20h 43m
Multiple Airlines
Deal found 2/6![Multiple Airlines logo]()
$458
This Southwest deal was found by Cheapflights users on 2/6. 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.
Tue 3/101:55 pm
SJO
- MDW
1 stop9h 00m
Southwest
Wed 3/116:00 am
MDW
- SJO
1 stop7h 55m
Southwest
Deal found 2/6![Southwest logo]()
$436
This United Airlines deal was found by Cheapflights users on 2/8. 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 4/221:25 pm
SJO
- STL
1 stop8h 03m
United Airlines
Wed 4/297:45 am
STL
- SJO
2 stops29h 36m
United Airlines
Deal found 2/8![United Airlines logo]()
$364
This Southwest deal was found by Cheapflights users on 2/8. 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 5/71:10 pm
SJO
- MDW
1 stop7h 45m
Southwest
Sun 5/106:50 am
MDW
- SJO
1 stop7h 10m
Southwest
Deal found 2/8![Southwest logo]()
$447
This American Airlines deal was found by Cheapflights users on 2/6. 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.
Thu 4/232:40 pm
LIR
- ORD
2 stops15h 44m
American Airlines
Wed 4/295:00 am
ORD
- LIR
2 stops9h 10m
American Airlines
Deal found 2/6![American Airlines logo]()
$555
This United Airlines deal was found by Cheapflights users on 2/8. 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 5/2712:44 pm
SJO
- STL
1 stop9h 43m
United Airlines
Wed 6/36:30 pm
STL
- SJO
1 stop16h 41m
United Airlines
Deal found 2/8![United Airlines logo]()
$381
Last-minute flights from Costa Rica to IllinoisDiscover last-minute flight deals from Costa Rica to Illinois. Data last updated February 9, 2026 and is based on user searches.
Discover last-minute flight deals from Costa Rica to Illinois. Data last updated February 9, 2026 and is based on user searches.
This eDestinos deal was found by Cheapflights users on 2/7. 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.
Sat 2/141:31 pm
SJO
- ORD
1 stop10h 16m
Spirit Airlines
Sat 2/214:43 pm
ORD
- SJO
2 stops18h 57m
Spirit Airlines
Deal found 2/7![Spirit Airlines logo]()
$301
This eDestinos deal was found by Cheapflights users on 2/7. 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.
Thu 2/191:31 pm
SJO
- ORD
1 stop7h 42m
Spirit Airlines
Wed 4/84:36 pm
ORD
- SJO
2 stops19h 06m
Spirit Airlines
Deal found 2/7![Spirit Airlines logo]()
$304
This Cheapflightsfares deal was found by Cheapflights users on 2/8. 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.
Sat 2/211:31 pm
SJO
- ORD
1 stop7h 42m
Spirit Airlines
Sat 2/284:43 pm
ORD
- SJO
2 stops18h 57m
Spirit Airlines
Deal found 2/8![Spirit Airlines logo]()
$298
This Kiwi.com deal was found by Cheapflights users on 2/7. 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.
Wed 2/257:45 am
SJO
- ORD
1 stop25h 54m
Multiple Airlines
Sat 2/288:16 pm
ORD
- SJO
1 stop16h 06m
Multiple Airlines
Deal found 2/7![Multiple Airlines logo]()
$307
This OneTravel deal was found by Cheapflights users on 2/7. 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 OneTravel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/2612:35 pm
SJO
- ORD
2 stops11h 12m
Spirit Airlines
Sun 3/18:59 am
ORD
- SJO
2 stops26h 41m
Spirit Airlines
Deal found 2/7![Spirit Airlines logo]()
$296
This CheapOair deal was found by Cheapflights users on 2/8. 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.
Fri 2/271:31 pm
SJO
- ORD
1 stop7h 42m
Spirit Airlines
Sat 3/712:44 pm
ORD
- SJO
2 stops22h 38m
Spirit Airlines
Deal found 2/8![Spirit Airlines logo]()
$302
This Mytrip deal was found by Cheapflights users on 2/8. 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.
Fri 2/271:31 pm
SJO
- ORD
1 stop10h 16m
Spirit Airlines
Tue 3/310:19 am
ORD
- SJO
3 stops25h 21m
Spirit Airlines
Deal found 2/8![Spirit Airlines logo]()
$308
This Kiwi.com deal was found by Cheapflights users on 2/8. 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 3/612:35 pm
SJO
- MDW
1 stop8h 18m
Multiple Airlines
Tue 3/1011:19 am
MDW
- SJO
1 stop24h 21m
Multiple Airlines
Deal found 2/8![Multiple Airlines logo]()
$297
This Travelocity deal was found by Cheapflights users on 2/7. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/912:31 pm
SJO
- ORD
1 stop10h 16m
Spirit Airlines
Mon 3/164:36 pm
ORD
- SJO
2 stops19h 06m
Spirit Airlines
Deal found 2/7![Spirit Airlines logo]()
$303
This Kiwi.com deal was found by Cheapflights users on 2/8. 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.
Tue 3/1012:31 pm
SJO
- ORD
1 stop21h 05m
Multiple Airlines
Tue 3/1710:55 am
ORD
- SJO
3 stops13h 35m
Multiple Airlines
Deal found 2/8![Multiple Airlines logo]()
$299
This Kiwi.com deal was found by Cheapflights users on 2/8. 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.
Wed 3/1112:31 pm
SJO
- ORD
1 stop10h 16m
Multiple Airlines
Wed 3/189:28 am
ORD
- SJO
2 stops26h 14m
Multiple Airlines
Deal found 2/8![Multiple Airlines logo]()
$309
This CheapOair deal was found by Cheapflights users on 2/6. 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.
Tue 3/2412:19 pm
SJO
- ORD
1 stop9h 58m
Spirit Airlines
Tue 3/314:36 pm
ORD
- SJO
2 stops19h 06m
Spirit Airlines
Deal found 2/6![Spirit Airlines logo]()
$300
One-way flights from Costa Rica to IllinoisSearch for one-way flight options from Costa Rica to Illinois. Find affordable one-way fares based on user searches. Data last updated February 9, 2026.
Search for one-way flight options from Costa Rica to Illinois. Find affordable one-way fares based on user searches. Data last updated February 9, 2026.
This Kiwi.com deal was found by Cheapflights users on 2/7. 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.
Sat 3/71:31 pm
SJO
- ORD
1 stop7h 42m
Spirit Airlines
Deal found 2/7![Spirit Airlines logo]()
$139
This Kiwi.com deal was found by Cheapflights users on 2/8. 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.
Tue 3/1012:31 pm
SJO
- ORD
1 stop10h 16m
Spirit Airlines
Deal found 2/8![Spirit Airlines logo]()
$142
This Kiwi.com deal was found by Cheapflights users on 2/8. 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.
Mon 3/912:31 pm
SJO
- ORD
1 stop21h 05m
Multiple Airlines
Deal found 2/8![Multiple Airlines logo]()
$146
This Kiwi.com deal was found by Cheapflights users on 2/8. 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 3/61:31 pm
SJO
- ORD
1 stop21h 51m
Spirit Airlines
Deal found 2/8![Spirit Airlines logo]()
$151
This Kiwi.com deal was found by Cheapflights users on 2/8. 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 3/51:31 pm
SJO
- ORD
1 stop9h 34m
Multiple Airlines
Deal found 2/8![Multiple Airlines logo]()
$156
This Kiwi.com deal was found by Cheapflights users on 2/7. 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.
Wed 3/41:31 pm
SJO
- ORD
1 stop7h 42m
Spirit Airlines
Deal found 2/7![Spirit Airlines logo]()
$158
This Kiwi.com deal was found by Cheapflights users on 2/6. 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.
Wed 4/2212:31 pm
SJO
- ORD
1 stop10h 10m
Spirit Airlines
Deal found 2/6![Spirit Airlines logo]()
$162
This Kiwi.com deal was found by Cheapflights users on 2/7. 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.
Tue 4/2812:31 pm
SJO
- ORD
1 stop10h 10m
Spirit Airlines
Deal found 2/7![Spirit Airlines logo]()
$164
This Kiwi.com deal was found by Cheapflights users on 2/7. 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.
Wed 3/41:31 pm
SJO
- ORD
2 stops21h 20m
Multiple Airlines
Deal found 2/7![Multiple Airlines logo]()
$165
This Kiwi.com deal was found by Cheapflights users on 2/6. 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.
Wed 5/612:31 pm
SJO
- ORD
1 stop10h 10m
Spirit Airlines
Deal found 2/6![Spirit Airlines logo]()
$167
This Southwest deal was found by Cheapflights users on 2/5. 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 2/261:50 pm
SJO
- MDW
1 stop8h 25m
Southwest
Deal found 2/5![Southwest logo]()
$179
This Kiwi.com deal was found by Cheapflights users on 2/5. 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 2/2612:35 pm
SJO
- MDW
2 stops32h 54m
Multiple Airlines
Deal found 2/5![Multiple Airlines logo]()
$185
Find 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 February 9, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $296 (eDestinos) |
One-way from | $139 (Kiwi.com) |
Popular in | June |
Cheapest in | January |
Average price | $382 |
Good round-trip deal | $299 or less |
Good one-way deal | $186 or less |
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 February 9, 2026.
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 JoséChicago
SJO - ORD
SJOORD
San José Juan Santamaria Intl
Sat 2/21
1:31 pm-9:13 pm
1 stop7h 42m
Chicago O'Hare Intl
Sat 2/28
4:43 pm-11:40 am
2 stops18h 57m
$298
San JoséChicago
SJO - ORD
SJOORD
San José Juan Santamaria Intl
Fri 2/27
1:31 pm-11:47 pm
1 stop10h 16m
Chicago O'Hare Intl
Tue 3/3
10:19 am-11:40 am
3 stops25h 21m
$308
San JoséChicago
SJO - ORD
SJOORD
San José Juan Santamaria Intl
Tue 3/10
1:05 pm-7:35 pm
Nonstop5h 30m
Chicago O'Hare Intl
Tue 3/17
7:35 am-9:32 pm
1 stop14h 57m
$318
San JoséSt. Louis
SJO - STL
SJOSTL
San José Juan Santamaria Intl
Fri 3/6
12:35 pm-7:02 am
1 stop18h 27m
Lambert-St Louis
Mon 3/9
4:51 pm-10:40 am
1 stop18h 49m
$322
San JoséChicago
SJO - ORD
SJOORD
San José Juan Santamaria Intl
Wed 3/11
1:05 pm-7:35 pm
Nonstop5h 30m
Chicago O'Hare Intl
Wed 3/18
9:15 pm-9:32 pm
1 stop25h 17m
$323
San JoséChicago
SJO - ORD
SJOORD
San José Juan Santamaria Intl
Fri 2/27
2:05 pm-7:35 pm
Nonstop5h 30m
Chicago O'Hare Intl
Tue 3/31
5:15 pm-10:11 am
1 stop17h 56m
$329
San JoséChicago
SJO - ORD
SJOORD
San José Juan Santamaria Intl
Thu 4/16
12:31 pm-11:41 pm
1 stop10h 10m
Chicago O'Hare Intl
Thu 4/23
5:32 pm-11:22 am
1 stop18h 50m
$329
San JoséChicago
SJO - ORD
SJOORD
San José Juan Santamaria Intl
Thu 2/12
2:05 pm-7:35 pm
Nonstop5h 30m
Chicago O'Hare Intl
Tue 2/24
9:15 am-7:53 pm
1 stop10h 38m
$329
San JoséChicago
SJO - ORD
SJOORD
San José Juan Santamaria Intl
Fri 2/27
2:05 pm-7:35 pm
Nonstop5h 30m
Chicago O'Hare Intl
Wed 4/8
8:51 am-7:37 pm
1 stop11h 46m
$329
San JoséChicago
SJO - ORD
SJOORD
San José Juan Santamaria Intl
Fri 2/27
2:05 pm-7:35 pm
Nonstop5h 30m
Chicago O'Hare Intl
Mon 3/2
7:39 am-12:56 pm
Nonstop5h 17m
$329
Showing 1-10 of 53 results
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.
SJO-ORD
SJO-STL
SJO-MDW
LIR-ORD
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
CR0-USIL
SJO-ORD
SJO-STL
SJO-MDW
LIR-ORD
What is the cheapest month to book a flight from Costa Rica to Illinois?
Currently, October is the cheapest month in which you can book a flight from Costa Rica to Illinois (average of $195). Flying from Costa Rica to Illinois in March is currently the most expensive (average of $334). 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 February 9, 2026.
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.
Weekly flight availability from Costa Rica to Illinois
Explore weekly flight availability from Costa Rica to Illinois. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated February 9, 2026.
The most flights from CR0 to USIL are scheduled on a Monday (2 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (1 on average).
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 February 9, 2026.
Read reviews from past customers who have flown Copa Airlines, United Airlines, and American Airlines from Costa Rica to Illinois. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Boarding
7.8
Comfort
7.4
Crew
8.1
Overall
7.5
Entertainment
6.8
Food
6.8
Reviews
1 / 20
4.0
OkayJuan Pablo,Sep 2025
PTY - VVI
Boarding
7.8
Comfort
7.4
Crew
8.1
Overall
7.5
Entertainment
6.8
Food
6.8
Reviews
1 / 20
4.0
OkayJuan Pablo,Sep 2025
PTY - VVI
Boarding
7.8
Comfort
7.4
Crew
8.1
Overall
7.5
Entertainment
6.8
Food
6.8
Reviews
1 / 20
4.0
OkayJuan Pablo,Sep 2025
PTY - VVI
Boarding
7.8
Comfort
7.4
Crew
8.1
Overall
7.5
Entertainment
6.8
Food
6.8
Reviews
1 / 20
4.0
OkayJuan Pablo,Sep 2025
PTY - VVI
Boarding
7.8
Comfort
7.4
Crew
8.1
Overall
7.5
Entertainment
6.8
Food
6.8
Reviews
1 / 20
4.0
OkayJuan Pablo,Sep 2025
PTY - VVI
Boarding
7.8
Comfort
7.4
Crew
8.1
Overall
7.5
Entertainment
6.8
Food
6.8
Reviews
1 / 20
4.0
OkayJuan Pablo,Sep 2025
PTY - VVI
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.
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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.
Complete your trip
Complete your trip to Illinois by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Costa Rica to Illinois by cabin class
Find flights from Costa Rica to Illinois, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Costa Rica and Illinois flights
Browse other Costa Rica and Illinois flight options. Last updated on February 9, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Find a return flight route from Illinois
Find the right flight back to Costa Rica after your stay in Illinois
Costa Rica to Illinois flights
Consider these flights traveling from Costa Rica to Illinois.
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 February 9, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$206 | Average$348 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$249 | Average$484 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$311 | Average$447 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$332 | Average$459 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$400 | Average$560 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$463 | Average$507 | FlexibilityNo cancel fee | On-time63% |