What is the cheapest airline that flies from Costa Rica to Illinois?

Spirit Airlines, American Airlines, and Frontier are the most popular carriers operating from Costa Rica to Illinois

How many flights depart from Costa Rica to Illinois on average per week?

As of July 2025, there are 3 flights per week flying from Costa Rica to Illinois. The most common day of the week flights depart is Wed, with 33% of flights taking off on this day.

What airlines fly to Illinois?

United Airlines, American Airlines and Spirit Airlines are the top three most popular airlines that fly to Illinois from Costa Rica according to our data. United Airlines is the first choice among our users, with 32% of people opting to fly with this airline when traveling to Illinois. Keep in mind that there are 6 different airlines that fly to Illinois on a routine basis, so you have a few additional options to choose from.

How long is the flight from Costa Rica to Illinois?

The flight from Costa Rica to Illinois depends on which airports you’re departing and arriving from and whether or not you have a layover. If you fly from San José (a popular airport in Costa Rica) to Chicago O'Hare Intl Airport (the most popular airport in Illinois), then the flight time is 5h 29m on average. If you fly from Liberia (another popular airport in Costa Rica) to Chicago O'Hare Intl Airport, then the average flight time is 8h 12m.

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?

As of July 2025, there are 6 operators available to choose from 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.

$137 Cheap Flights from Costa Rica to Illinois in 2025

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Find the cheapest flights from Costa Rica to Illinois

Round-trip

One-way

Last minute

Direct

Recent round-trip flight deals from Costa Rica to Illinois

6:00 am - 11:59 pmSJO-STL

16h 59m1 stop

8:49 am - 6:16 pmSTL-SJO

10h 27m1 stop

$226American Airlines

Find Deal

Wed, Sep 3 - Tue, Oct 14

6:00 am - 9:10 pmSJO-STL

14h 10m2 stops

8:49 am - 6:16 pmSTL-SJO

10h 27m1 stop

$230American Airlines

Find Deal

Wed, Sep 3 - Tue, Oct 14

12:19 pm - 10:48 pmSJO-ORD

9h 29m1 stop

5:05 am - 11:14 amORD-SJO

7h 09m1 stop

$233Spirit Airlines

Find Deal

Wed, Sep 24 - Thu, Oct 2

12:18 pm - 11:59 pmSJO-ORD

10h 41m1 stop

8:12 pm - 11:12 amORD-SJO

16h 00m1 stop

$235Spirit Airlines

Find Deal

Wed, Aug 27 - Sat, Aug 30

7:55 am - 9:57 amSJO-STL

25h 02m1 stop

6:15 am - 7:37 pmSTL-SJO

14h 22m1 stop

$320United Airlines

Find Deal

Thu, Sep 4 - Sun, Oct 12

7:55 am - 6:58 pmSJO-STL

10h 03m1 stop

6:15 am - 7:37 pmSTL-SJO

14h 22m1 stop

$326United Airlines

Find Deal

Thu, Sep 4 - Sun, Oct 12

8:50 am - 8:00 pmSJO-STL

10h 10m1 stop

7:45 am - 6:55 pmSTL-SJO

12h 10m1 stop

$329Southwest

Find Deal

Wed, Aug 27 - Tue, Sep 2

1:40 pm - 11:20 pmSJO-MDW

8h 40m1 stop

6:25 am - 6:55 pmMDW-SJO

13h 30m1 stop

$384Southwest

Find Deal

Wed, Sep 24 - Tue, Sep 30

1:25 pm - 10:20 amLIR-ORD

19h 55m2 stops

7:59 pm - 12:00 pmORD-LIR

17h 01m1 stop

$477Delta

Find Deal

Thu, Sep 4 - Sun, Sep 14

2:10 pm - 11:53 pmLIR-ORD

9h 43m1 stop

6:00 am - 12:43 pmORD-LIR

6h 43m1 stop

$553Delta

Find Deal

Wed, Nov 12 - Sun, Nov 16

Spirit Airlines flights from Costa Rica to Illinois

Our best Spirit Airlines deals on Costa Rica to Illinois flight tickets

Spirit Airlines

Sep 24

SJO12:19 pmSan José Juan Santamaria Intl

9h 29m

1 stop

ORD10:48 pmChicago O'Hare Intl

Oct 2

ORD5:05 amChicago O'Hare Intl

7h 09m

1 stop

SJO11:14 amSan José Juan Santamaria Intl

$233

Find similar

Spirit Airlines

Aug 27

SJO12:18 pmSan José Juan Santamaria Intl

10h 41m

1 stop

ORD11:59 pmChicago O'Hare Intl

Aug 30

ORD8:12 pmChicago O'Hare Intl

16h 00m

1 stop

SJO11:12 amSan José Juan Santamaria Intl

$235

Find similar

Spirit Airlines

Aug 26

SJO12:18 pmSan José Juan Santamaria Intl

10h 41m

1 stop

ORD11:59 pmChicago O'Hare Intl

Aug 30

ORD8:12 pmChicago O'Hare Intl

16h 00m

1 stop

SJO11:12 amSan José Juan Santamaria Intl

$238

Find similar

American Airlines flights from Costa Rica to Illinois

Our best American Airlines deals on Costa Rica to Illinois flight tickets

American Airlines

Sep 3

SJO6:00 amSan José Juan Santamaria Intl

16h 59m

1 stop

STL11:59 pmLambert-St Louis

Oct 14

STL8:49 amLambert-St Louis

10h 27m

1 stop

SJO6:16 pmSan José Juan Santamaria Intl

$226

Find similar

American Airlines

Sep 3

SJO6:00 amSan José Juan Santamaria Intl

14h 10m

2 stops

STL9:10 pmLambert-St Louis

Oct 14

STL8:49 amLambert-St Louis

10h 27m

1 stop

SJO6:16 pmSan José Juan Santamaria Intl

$230

Find similar

American Airlines

Sep 3

SJO6:00 amSan José Juan Santamaria Intl

14h 10m

2 stops

STL9:10 pmLambert-St Louis

Oct 14

STL6:25 amLambert-St Louis

12h 51m

2 stops

SJO6:16 pmSan José Juan Santamaria Intl

$306

Find similar

Fly from

Fly to

Route

Depart

Return

Price

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Wed 9/3

6:00 am-11:59 pm

1 stop16h 59m

Lambert-St Louis

Tue 10/14

8:49 am-6:16 pm

1 stop10h 27m

$226

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Wed 9/3

6:00 am-9:10 pm

2 stops14h 10m

Lambert-St Louis

Tue 10/14

8:49 am-6:16 pm

1 stop10h 27m

$230

San JoséChicago

SJO - ORD

SJOORD

San José Juan Santamaria Intl

Wed 9/24

12:19 pm-10:48 pm

1 stop9h 29m

Chicago O'Hare Intl

Thu 10/2

5:05 am-11:14 am

1 stop7h 09m

$233

San JoséChicago

SJO - ORD

SJOORD

San José Juan Santamaria Intl

Wed 8/27

12:18 pm-11:59 pm

1 stop10h 41m

Chicago O'Hare Intl

Sat 8/30

8:12 pm-11:12 am

1 stop16h 00m

$235

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Thu 9/4

7:55 am-9:57 am

1 stop25h 02m

Lambert-St Louis

Sun 10/12

6:15 am-7:37 pm

1 stop14h 22m

$320

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Thu 9/4

7:55 am-6:58 pm

1 stop10h 03m

Lambert-St Louis

Sun 10/12

6:15 am-7:37 pm

1 stop14h 22m

$326

San JoséSt. Louis

SJO - STL

SJOSTL

San José Juan Santamaria Intl

Wed 8/27

8:50 am-8:00 pm

1 stop10h 10m

Lambert-St Louis

Tue 9/2

7:45 am-6:55 pm

1 stop12h 10m

$329

San JoséChicago

SJO - MDW

SJOMDW

San José Juan Santamaria Intl

Wed 9/24

1:40 pm-11:20 pm

1 stop8h 40m

Chicago Midway

Tue 9/30

6:25 am-6:55 pm

1 stop13h 30m

$384

LiberiaChicago

LIR - ORD

LIRORD

Liberia

Thu 9/4

1:25 pm-10:20 am

2 stops19h 55m

Chicago O'Hare Intl

Sun 9/14

7:59 pm-12:00 pm

1 stop17h 01m

$477

LiberiaChicago

LIR - ORD

LIRORD

Liberia

Wed 11/12

2:10 pm-11:53 pm

1 stop9h 43m

Chicago O'Hare Intl

Sun 11/16

6:00 am-12:43 pm

1 stop6h 43m

$553

Flights are sorted by cheapest round-trip flights first.

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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

Prices

Airlines

Other information

What is the cheapest month to fly to Illinois?

The cheapest month to fly to Illinois from Costa Rica is in August. Flight prices, which tend to average around $436, 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 August, then flying in May is also cheap. Prices for this month can be found on momondo for an average of $443.

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 $432. Flights from Costa Rica to Illinois on a Sunday will generally be more expensive and average around $639. 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 in the afternoon. Flights from Costa Rica to Illinois during this time can be as low as $335. Flights at noon are often more expensive with an average ticket price of $597.

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 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 $480 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 $401 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?

You could potentially save up to 24% on your flight if you consider stops on a Costa Rica to Illinois flight.

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	$137
Fastest flight time	5h 24m
Direct flights	Every day
Airports in Illinois	3 airports

The best one-way flight to Illinois from Costa Rica in the past 72 hours is $137. The best round-trip flight deal from Costa Rica to Illinois found on momondo in the last 72 hours is $226.

The fastest flight from Costa Rica to Illinois takes 5h 24m

Direct flights go from Costa Rica to Illinois every day.

There are 3 airports near Illinois: Chicago O'Hare Intl (ORD), Chicago Midway (MDW), Lambert-St Louis (STL)

Search flight deals

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?
As of July 2025, there are 6 operators available to choose from 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?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Costa Rica to Illinois is Boeing 737 MAX 8 (63.05% of total bookings). The next most popular plane models are Airbus A320-100/200 (8.14%), Airbus A320neo (6.10%), and Airbus A330-300 (6.10%).

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
Avianca	PriceFrom $261	Free Cancellation	Rating 6.7 2,388 reviews	Search Avianca flights
Spirit Airlines	PriceFrom $266	Free Cancellation	Rating 6.3 8,049 reviews	Search Spirit Airlines flights
Copa Airlines	PriceFrom $314	Free Cancellation	Rating 7.5 1,493 reviews	Search Copa Airlines flights
American Airlines	PriceFrom $340	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
Southwest	PriceFrom $425	Free Cancellation	Rating 8.0 4,246 reviews	Search Southwest flights
United Airlines	PriceFrom $436	Free Cancellation	Rating 7.4 8,900 reviews	Search United Airlines 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.

An easier way to manage your Illinois trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

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Popular cities in Illinois

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Cheap flights from Costa Rica to Illinois from $137

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 8/19. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from Costa Rica to Illinois

Recent round-trip flight deals from Costa Rica to Illinois

Recent one-way flight deals from Costa Rica to Illinois

Recent last minute flight deals from Costa Rica to Illinois

Recent direct flight deals from Costa Rica to Illinois

Spirit Airlines flights from Costa Rica to Illinois

Our best Spirit Airlines deals on Costa Rica to Illinois flight tickets

American Airlines flights from Costa Rica to Illinois

Our best American Airlines deals on Costa Rica to Illinois flight tickets

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Use the filters below to find and compare flights from Costa Rica to Illinois that are best for you.

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?

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

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 in the afternoon. Flights from Costa Rica to Illinois during this time can be as low as $335. Flights at noon are often more expensive with an average ticket price of $597.

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 to Illinois?

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?

You could potentially save up to 24% on your flight if you consider stops on a Costa Rica to Illinois flight.

What is the cheapest airline that flies from Costa Rica to Illinois?

Spirit Airlines, American Airlines, and Frontier are the most popular carriers operating from Costa Rica to Illinois

What airlines fly to Illinois?

How many flights depart from Costa Rica to Illinois on average per week?

As of July 2025, there are 3 flights per week flying from Costa Rica to Illinois. The most common day of the week flights depart is Wed, with 33% of flights taking off on this day.

How long is the flight from 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

Fastest flight time

Direct flights

Airports in Illinois

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

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?

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

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

Why use momondo?

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

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

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

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

An easier way to manage your Illinois trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Illinois

Popular cities in Illinois

Popular flights according to clicks in the last 7 days on momondo