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Cheap flights from Costa Rica to Illinois from $223

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Costa Rica to Illinois departing on 11/30. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Find the cheapest flights from Costa Rica to Illinois

Recent round-trip flight deals from Costa Rica to Illinois

Enter your travel dates to find the best prices.
Multiple Airlines Logo
4:15 pm - 12:09 pm
SJO
-
ORD
18h 54m
1 stop
Multiple Airlines Logo
2:53 am - 11:59 pm
ORD
-
SJO
22h 06m
1 stop
$379Multiple Airlines
Thu, Oct 15 - Sat, Oct 17
Air Canada Logo
1:55 pm - 9:00 am
LIR
-
ORD
18h 05m
1 stop
Air Canada Logo
8:00 am - 1:55 pm
ORD
-
LIR
29h 55m
1 stop
$384Air Canada
Tue, Oct 27 - Sun, Nov 8
JetBlue Logo
2:02 pm - 11:44 pm
SJO
-
ORD
8h 42m
1 stop
JetBlue Logo
7:00 am - 12:57 pm
ORD
-
SJO
6h 57m
1 stop
$388JetBlue
Tue, Sep 1 - Tue, Sep 8
Southwest Logo
9:00 am - 6:00 pm
SJO
-
MDW
8h 00m
1 stop
Southwest Logo
10:05 am - 6:40 pm
MDW
-
SJO
9h 35m
2 stops
$390Southwest
Fri, Aug 28 - Mon, Aug 31
Air Canada Logo
2:55 pm - 9:00 am
LIR
-
ORD
18h 05m
1 stop
Air Canada Logo
1:55 pm - 1:40 pm
ORD
-
LIR
23h 45m
1 stop
$390Air Canada
Mon, Nov 2 - Mon, Nov 9
Southwest Logo
9:00 am - 9:55 pm
SJO
-
MDW
11h 55m
2 stops
Southwest Logo
10:10 am - 6:40 pm
MDW
-
SJO
9h 30m
2 stops
$395Southwest
Thu, Sep 17 - Tue, Sep 22
JetBlue Logo
2:05 pm - 11:44 pm
SJO
-
ORD
8h 39m
1 stop
JetBlue Logo
7:00 am - 12:59 pm
ORD
-
SJO
6h 59m
1 stop
$436JetBlue
Thu, Oct 22 - Tue, Oct 27
United Airlines Logo
12:44 pm - 9:24 pm
SJO
-
STL
31h 40m
1 stop
United Airlines Logo
5:36 pm - 7:37 pm
STL
-
SJO
27h 01m
2 stops
$506United Airlines
Fri, Oct 16 - Mon, Oct 19
United Airlines Logo
7:15 am - 11:44 pm
SJO
-
STL
15h 29m
1 stop
United Airlines Logo
6:15 am - 12:21 pm
STL
-
SJO
7h 06m
1 stop
$517United Airlines
Wed, Jul 1 - Wed, Sep 30
American Airlines Logo
11:41 pm - 8:46 am
SJO
-
STL
8h 05m
1 stop
American Airlines Logo
5:32 am - 2:37 pm
STL
-
SJO
10h 05m
1 stop
$559American Airlines
Thu, Jul 23 - Tue, Jul 28

JetBlue flights from Costa Rica to Illinois

Our best JetBlue deals on Costa Rica to Illinois flight tickets
JetBlue
Sep 1
SJO2:02 pmSan José Juan Santamaria Intl
8h 42m
1 stop
ORD11:44 pmChicago O'Hare Intl
Sep 8
ORD7:00 amChicago O'Hare Intl
6h 57m
1 stop
SJO12:57 pmSan José Juan Santamaria Intl
$388
JetBlue
Nov 4
LIR3:05 pmLiberia
8h 39m
1 stop
ORD11:44 pmChicago O'Hare Intl
Nov 8
ORD7:00 amChicago O'Hare Intl
7h 00m
1 stop
LIR2:00 pmLiberia
$452
JetBlue
Jun 19
LIR2:00 pmLiberia
17h 45m
1 stop
ORD8:45 amChicago O'Hare Intl
Jul 26
ORD7:00 amChicago O'Hare Intl
7h 01m
1 stop
LIR1:01 pmLiberia
$477

Delta flights from Costa Rica to Illinois

Our best Delta deals on Costa Rica to Illinois flight tickets
Delta
Sep 1
SJO1:14 pmSan José Juan Santamaria Intl
17h 42m
2 stops
ORD7:56 amChicago O'Hare Intl
Sep 8
ORD5:30 amChicago O'Hare Intl
7h 26m
1 stop
SJO11:56 amSan José Juan Santamaria Intl
$476
Delta
Sep 24
SJO1:25 pmSan José Juan Santamaria Intl
8h 00m
1 stop
MDW10:25 pmChicago Midway
Sep 27
MDW6:05 amChicago Midway
6h 49m
1 stop
SJO11:54 amSan José Juan Santamaria Intl
$497
Delta
Oct 7
SJO1:23 pmSan José Juan Santamaria Intl
7h 22m
1 stop
MDW9:45 pmChicago Midway
Oct 13
MDW6:00 amChicago Midway
6h 58m
1 stop
SJO11:58 amSan José Juan Santamaria Intl
$511

momondo 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, momondo users made 832,500 searches. Data last updated June 4, 2026.
Use the filters below to find and compare flights from Costa Rica to Illinois that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

San JoséChicago

SJO - ORD

SJOORD

San José Juan Santamaria Intl

Thu 10/15

4:15 pm-12:09 pm

1 stop18h 54m

Chicago O'Hare Intl

Sat 10/17

2:53 am-11:59 pm

1 stop22h 06m

$379

LiberiaChicago

LIR - ORD

LIRORD

Liberia

Tue 10/27

1:55 pm-9:00 am

1 stop18h 05m

Chicago O'Hare Intl

Sun 11/8

8:00 am-1:55 pm

1 stop29h 55m

$384

San JoséChicago

SJO - ORD

SJOORD

San José Juan Santamaria Intl

Tue 9/1

2:02 pm-11:44 pm

1 stop8h 42m

Chicago O'Hare Intl

Tue 9/8

7:00 am-12:57 pm

1 stop6h 57m

$388

San JoséChicago

SJO - MDW

SJOMDW

San José Juan Santamaria Intl

Fri 8/28

9:00 am-6:00 pm

1 stop8h 00m

Chicago Midway

Mon 8/31

10:05 am-6:40 pm

2 stops9h 35m

$390

LiberiaChicago

LIR - ORD

LIRORD

Liberia

Mon 11/2

2:55 pm-9:00 am

1 stop18h 05m

Chicago O'Hare Intl

Mon 11/9

1:55 pm-1:40 pm

1 stop23h 45m

$390

San JoséChicago

SJO - MDW

SJOMDW

San José Juan Santamaria Intl

Thu 9/17

9:00 am-9:55 pm

2 stops11h 55m

Chicago Midway

Tue 9/22

10:10 am-6:40 pm

2 stops9h 30m

$395
Quickest round-trip

San JoséChicago

SJO - ORD

SJOORD

San José Juan Santamaria Intl

Thu 10/22

2:05 pm-11:44 pm

1 stop8h 39m

Chicago O'Hare Intl

Tue 10/27

7:00 am-12:59 pm

1 stop6h 59m

$436

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Fri 10/16

12:44 pm-9:24 pm

1 stop31h 40m

Lambert-St Louis

Mon 10/19

5:36 pm-7:37 pm

2 stops27h 01m

$506

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Wed 7/1

7:15 am-11:44 pm

1 stop15h 29m

Lambert-St Louis

Wed 9/30

6:15 am-12:21 pm

1 stop7h 06m

$517

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Thu 7/23

11:41 pm-8:46 am

1 stop8h 05m

Lambert-St Louis

Tue 7/28

5:32 am-2:37 pm

1 stop10h 05m

$559

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Illinois from

How to get the cheapest flight ticket from Costa Rica to Illinois

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Illinois?

The cheapest month to fly to Illinois from Costa Rica is in April. Flight prices, which tend to average around $103, are often lower during this time because this is during the off-season. If you aren’t able to travel to Illinois during the month of April, then flying in November is also cheap. Prices for this month can be found on momondo for an average of $111.

What is the cheapest day to depart on your flight to Illinois?

The cheapest day to depart from Costa Rica to Illinois is on a Tuesday when prices can be found for as low as $426. Flights from Costa Rica to Illinois on a Sunday will generally be more expensive and average around $584. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Illinois?

Our most recent data shows that the best time of day to fly to Illinois is at noon. Flights from Costa Rica to Illinois during this time can be as low as $464. Flights in the morning are often more expensive with an average ticket price of $467.

What is the cheapest Costa Rica to Illinois flight route?

Fly from San José Juan Santamaria Intl to Chicago O'Hare Intl for the best Costa Rica - Illinois flight prices

How far in advance should I book a flight from Costa Rica to Illinois?

You are more likely to see cheaper flights to Illinois from Costa Rica when booking weeks ahead of your departure date. In general, you can expect to find flights to Illinois for around $475 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Illinois from Costa Rica for as low as $400 on momondo.

What cabin class options are available on Costa Rica to Illinois flights?

There are 3 cabin classes available to choose from on Costa Rica to Illinois flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Costa Rica to Illinois flights?

No. A direct flight is the cheapest option for a flight between Costa Rica to Illinois.

Cheap Costa Rica to Illinois flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Costa Rica to Illinois

Best Price Found

$334

Fastest flight time

5h 30m

Direct flights

Sun

Airports in Illinois

98 airports
The best one-way flight to Illinois from Costa Rica in the past 72 hours is $334. The best round-trip flight deal from Costa Rica to Illinois found on momondo in the last 72 hours is $364.
The fastest flight from Costa Rica to Illinois takes 5h 30m
Direct flights go from Costa Rica to Illinois on Sunday. There are no airlines offering direct flights.
There are 98 airports in Illinois. From Costa Rica there are direct flights to Chicago O'Hare Intl (ORD).
Search flight deals

Frequently asked questions about flying from Costa Rica to Illinois

  • When did momondo last update prices for flights from Costa Rica to Illinois?

    Prices for flights from Costa Rica to Illinois are refreshed on a daily basis.

  • How many operators does momondo search for flights from Costa Rica to Illinois?

  • How old do you have to be to fly from Costa Rica to Illinois?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Costa Rica to Illinois.

  • What documentation or ID do you need to fly to Illinois?

    The travel and health documents you'll need for your trip to Illinois may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Illinois. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Costa Rica to Illinois?

Best airlines flying from Costa Rica to Illinois

Compare and see reviews for airlines that fly from Costa Rica to Illinois with momondo
Airline
Rating
Free Cancellation
Price
Copa AirlinesPriceFrom $189Free CancellationRating
7.5
1,568 reviews
Search Copa Airlines flights
AviancaPriceFrom $249Free CancellationRating
6.5
2,528 reviews
Search Avianca flights
American AirlinesPriceFrom $337Free CancellationRating
7.1
11,639 reviews
Search American Airlines flights
United AirlinesPriceFrom $370Free CancellationRating
7.4
9,775 reviews
Search United Airlines flights
SouthwestPriceFrom $463Free CancellationRating
8.0
4,256 reviews
Search Southwest flights

Why use momondo?

Why should I use momondo to find a flight deal from Costa Rica to Illinois?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Costa Rica to Illinois. momondo saves you time and could save you money on your trip.

Can I find flights from Costa Rica to Illinois with flexible booking policies on momondo?

Yes. All flights to Illinois from Costa Rica on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Costa Rica to Illinois?

Once all potential Costa Rica to Illinois flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Costa Rica to Illinois right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Costa Rica to Illinois now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Illinois and let you know when they change.

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