What airlines fly to Costa Rica?

American Airlines, United Airlines and Spirit Airlines are the top three most popular airlines that fly to Costa Rica from Illinois according to our data. American Airlines is the first choice among our users, with 43% of people opting to fly with this airline when traveling to Costa Rica. Keep in mind that there are 10 different airlines that fly to Costa Rica on a routine basis, so you have a few additional options to choose from.

How long is the flight from Illinois to Costa Rica?

Flight times vary depending on what airport in Illinois you fly out of and what airport in Costa Rica you fly into. For example, flying from Chicago to San José takes 6h 04m on average. On the other hand, flying from Moline to San José takes 17h 32m on average. Keep in mind that it’s always quicker to opt for a non-stop flight, so be sure to check momondo if there are any available for your route.

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

JetBlue, Frontier, and Viva are the most popular carriers operating from Illinois to Costa Rica

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

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

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

As of May 2026, there are 10 operators available to choose from for flights from Illinois to Costa Rica.

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

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Illinois to Costa Rica.

What documentation or ID do you need to fly to Costa Rica?

The travel and health documents you'll need for your trip to Costa Rica 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 Costa Rica. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$130 Cheap Flights from Illinois to Costa Rica in 2026

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Find the cheapest flights from Illinois to Costa Rica

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

4:17 pm - 8:20 am

STL

SJO

17h 03m

1 stop

9:35 am - 11:59 pm

SJO

STL

13h 24m

1 stop

$346Frontier

Sat, Jul 4 - Sat, Jul 11

4:17 pm - 8:20 am

STL

SJO

17h 03m

1 stop

9:35 am - 11:59 pm

SJO

STL

13h 24m

1 stop

$352Frontier

Sat, Jun 20 - Sat, Jul 11

7:00 am - 1:01 pm

ORD

LIR

7h 01m

1 stop

2:05 pm - 11:44 pm

LIR

ORD

8h 39m

1 stop

$371JetBlue

Wed, Sep 2 - Wed, Sep 9

7:00 am - 1:01 pm

ORD

LIR

7h 01m

1 stop

2:06 pm - 11:44 pm

LIR

ORD

8h 38m

1 stop

$420JetBlue

Tue, Aug 11 - Thu, Aug 20

3:50 pm - 12:05 pm

ORD

LIR

21h 15m

1 stop

1:00 pm - 9:00 am

LIR

ORD

19h 00m

1 stop

$428Air Canada

Fri, May 29 - Sat, Jun 6

1:49 pm - 11:59 pm

ORD

SJO

11h 10m

1 stop

4:15 pm - 12:09 pm

SJO

ORD

18h 54m

1 stop

$428Multiple Airlines

Tue, Oct 20 - Sun, Oct 25

3:40 pm - 8:35 pm

ORD

SJO

29h 55m

1 stop

7:15 am - 10:18 am

SJO

ORD

26h 03m

1 stop

$429Air Canada

Sat, May 30 - Mon, Jun 8

4:59 pm - 8:20 am

ORD

SJO

16h 21m

1 stop

2:02 pm - 11:44 pm

SJO

ORD

8h 42m

1 stop

$432Multiple Airlines

Sat, Jul 4 - Fri, Jul 10

7:00 am - 1:50 pm

MDW

LIR

6h 50m

1 stop

2:45 pm - 11:05 pm

LIR

MDW

8h 20m

1 stop

$452Southwest

Tue, Nov 3 - Wed, Nov 11

6:15 am - 12:45 pm

MDW

SJO

7h 30m

1 stop

9:00 am - 6:00 pm

SJO

MDW

8h 00m

1 stop

$454Southwest

Wed, Aug 19 - Thu, Aug 27

Air Canada flights from Illinois to Costa Rica

Our best Air Canada deals on Illinois to Costa Rica flight tickets

Air Canada

May 29

ORD3:50 pmChicago O'Hare Intl

21h 15m

1 stop

LIR12:05 pmLiberia

Jun 6

LIR1:00 pmLiberia

19h 00m

1 stop

ORD9:00 amChicago O'Hare Intl

$428

Air Canada

May 30

ORD3:40 pmChicago O'Hare Intl

29h 55m

1 stop

SJO8:35 pmSan José Juan Santamaria Intl

Jun 8

SJO7:15 amSan José Juan Santamaria Intl

26h 03m

1 stop

ORD10:18 amChicago O'Hare Intl

$429

Air Canada

May 30

ORD3:40 pmChicago O'Hare Intl

29h 55m

1 stop

SJO8:35 pmSan José Juan Santamaria Intl

Jun 8

SJO7:15 amSan José Juan Santamaria Intl

23h 30m

2 stops

ORD7:45 amChicago O'Hare Intl

$434

Frontier flights from Illinois to Costa Rica

Our best Frontier deals on Illinois to Costa Rica flight tickets

Frontier

Jul 4

STL4:17 pmLambert-St Louis

17h 03m

1 stop

SJO8:20 amSan José Juan Santamaria Intl

Jul 11

SJO9:35 amSan José Juan Santamaria Intl

13h 24m

1 stop

STL11:59 pmLambert-St Louis

$346

Frontier

Jun 20

STL4:17 pmLambert-St Louis

17h 03m

1 stop

SJO8:20 amSan José Juan Santamaria Intl

Jul 11

SJO9:35 amSan José Juan Santamaria Intl

13h 24m

1 stop

STL11:59 pmLambert-St Louis

$352

Frontier

Jun 20

STL4:17 pmLambert-St Louis

17h 03m

1 stop

SJO8:20 amSan José Juan Santamaria Intl

Jul 11

SJO9:35 amSan José Juan Santamaria Intl

13h 24m

1 stop

STL11:59 pmLambert-St Louis

$362

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisSan José

STL - SJO

STLSJO

Lambert-St Louis

Sat 7/4

4:17 pm-8:20 am

1 stop17h 03m

San José Juan Santamaria Intl

Sat 7/11

9:35 am-11:59 pm

1 stop13h 24m

$346

St. LouisSan José

STL - SJO

STLSJO

Lambert-St Louis

Sat 6/20

4:17 pm-8:20 am

1 stop17h 03m

San José Juan Santamaria Intl

Sat 7/11

9:35 am-11:59 pm

1 stop13h 24m

$352

ChicagoLiberia

ORD - LIR

ORDLIR

Chicago O'Hare Intl

Wed 9/2

7:00 am-1:01 pm

1 stop7h 01m

Liberia

Wed 9/9

2:05 pm-11:44 pm

1 stop8h 39m

$371

ChicagoLiberia

ORD - LIR

ORDLIR

Chicago O'Hare Intl

Tue 8/11

7:00 am-1:01 pm

1 stop7h 01m

Liberia

Thu 8/20

2:06 pm-11:44 pm

1 stop8h 38m

$420

ChicagoLiberia

ORD - LIR

ORDLIR

Chicago O'Hare Intl

Fri 5/29

3:50 pm-12:05 pm

1 stop21h 15m

Liberia

Sat 6/6

1:00 pm-9:00 am

1 stop19h 00m

$428

ChicagoSan José

ORD - SJO

ORDSJO

Chicago O'Hare Intl

Tue 10/20

1:49 pm-11:59 pm

1 stop11h 10m

San José Juan Santamaria Intl

Sun 10/25

4:15 pm-12:09 pm

1 stop18h 54m

$428

ChicagoSan José

ORD - SJO

ORDSJO

Chicago O'Hare Intl

Sat 5/30

3:40 pm-8:35 pm

1 stop29h 55m

San José Juan Santamaria Intl

Mon 6/8

7:15 am-10:18 am

1 stop26h 03m

$429

ChicagoSan José

ORD - SJO

ORDSJO

Chicago O'Hare Intl

Sat 7/4

4:59 pm-8:20 am

1 stop16h 21m

San José Juan Santamaria Intl

Fri 7/10

2:02 pm-11:44 pm

1 stop8h 42m

$432

Quickest round-trip

ChicagoLiberia

MDW - LIR

MDWLIR

Chicago Midway

Tue 11/3

7:00 am-1:50 pm

1 stop6h 50m

Liberia

Wed 11/11

2:45 pm-11:05 pm

1 stop8h 20m

$452

ChicagoSan José

MDW - SJO

MDWSJO

Chicago Midway

Wed 8/19

6:15 am-12:45 pm

1 stop7h 30m

San José Juan Santamaria Intl

Thu 8/27

9:00 am-6:00 pm

1 stop8h 00m

$454

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

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 Costa Rica?

The cheapest month to fly to Costa Rica from Illinois is in August. Flight prices, which tend to average around $88, are often lower during this time because this is during the off-season. If you’re not able to fly to Costa Rica in August, then October is your next best option. Flight prices from Illinois to Costa Rica during October average around $107.

What is the cheapest day to depart on your flight to Costa Rica?

According to our data, Tuesday is the cheapest day to fly to Costa Rica from Illinois. The lowest ticket price found for a Tuesday departure recently was $513. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $687. These prices are subject to change though, so be sure to set up a Price Alert for flights to Costa Rica.

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

In the afternoon is the cheapest time of day to fly from Illinois to Costa Rica when you can find flight prices for as low as $513. Flying to Costa Rica in the afternoon is an ideal time because this is during off-peak travel hours. Flights to Costa Rica are more costly at noon, with an average ticket price of $664. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.

What is the cheapest Illinois to Costa Rica flight route?

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

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

You are more likely to see cheaper flights to Costa Rica from Illinois when booking weeks ahead of your departure date. In general, you can expect to find flights to Costa Rica for around $516 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Costa Rica from Illinois for as low as $443 on momondo.

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

You could potentially save up to 2% on your flight if you consider stops on a Illinois to Costa Rica flight.

Cheap Illinois to Costa Rica flight deals and tips

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

Best Price Found	$256
Fastest flight time	5h 04m
Direct flights	Sun
Airports in Costa Rica	40 airports

The best one-way flight to Costa Rica from Illinois in the past 72 hours is $256. The best round-trip flight deal from Illinois to Costa Rica found on momondo in the last 72 hours is $497.

The fastest flight from Illinois to Costa Rica takes 5h 04m

Direct flights go from Illinois to Costa Rica on Sunday. There are no airlines offering direct flights.

There are 40 airports in Costa Rica. From Illinois there are direct flights to Liberia (LIR), San José Juan Santamaria Intl (SJO).

Search flight deals

Frequently asked questions about flying from Illinois to Costa Rica

When did momondo last update prices for flights from Illinois to Costa Rica?
Prices for flights from Illinois to Costa Rica are refreshed on a daily basis.
How many operators does momondo search for flights from Illinois to Costa Rica?
As of May 2026, there are 10 operators available to choose from for flights from Illinois to Costa Rica.
How old do you have to be to fly from Illinois to Costa Rica?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Illinois to Costa Rica.
What documentation or ID do you need to fly to Costa Rica?
The travel and health documents you'll need for your trip to Costa Rica 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 Costa Rica. 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 Illinois to Costa Rica?
momondo data reveals that the most frequently booked plane model on the route from Illinois to Costa Rica is Boeing 737 MAX 8, representing 56.41% of all bookings. The subsequent popular models are Boeing 737-800 at 19.01%, Boeing 737 MAX 9 at 10.51%, and Canadair (Bombardier) Regional Jet at 9.43%.

Best airlines flying from Illinois to Costa Rica

Compare and see reviews for airlines that fly from Illinois to Costa Rica with momondo

Airline	Rating	Free Cancellation	Price
Avianca	PriceFrom $139	Free Cancellation	Rating 6.5 2,523 reviews	Search Avianca flights
Delta	PriceFrom $205	Free Cancellation	Rating 7.9 8,450 reviews	Search Delta flights
Spirit Airlines	PriceFrom $232	Free Cancellation	Rating 6.3 8,630 reviews	Search Spirit Airlines flights
Frontier	PriceFrom $271	Free Cancellation	Rating 5.6 2,952 reviews	Search Frontier flights
Copa Airlines	PriceFrom $303	Free Cancellation	Rating 7.5 1,584 reviews	Search Copa Airlines flights
American Airlines	PriceFrom $341	Free Cancellation	Rating 7.1 11,663 reviews	Search American Airlines flights
United Airlines	PriceFrom $384	Free Cancellation	Rating 7.4 9,711 reviews	Search United Airlines flights
GOL	PriceFrom $384	Free Cancellation	Rating 7.3 1,216 reviews	Search GOL flights
Air Canada	PriceFrom $386	Free Cancellation	Rating 7.1 11,029 reviews	Search Air Canada flights
Southwest	PriceFrom $386	Free Cancellation	Rating 7.9 4,296 reviews	Search Southwest flights

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Costa Rica from Illinois.

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

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

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Costa Rica from Illinois.

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

Yes momondo offers price alerts on flights to Costa Rica from Illinois. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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Flights to San Joséfrom $248

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Cheap flights from Illinois to Costa Rica from $130

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to Costa Rica departing on 8/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Air Canada flights from Illinois to Costa Rica

Our best Air Canada deals on Illinois to Costa Rica flight tickets

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

What is the cheapest month to fly to Costa Rica?

What is the cheapest day to depart on your flight to Costa Rica?

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

What is the cheapest Illinois to Costa Rica flight route?

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

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

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

What airlines fly to Costa Rica?

How long is the flight from Illinois to Costa Rica?

Cheap Illinois to Costa Rica flight deals and tips

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

Best Price Found

Fastest flight time

Direct flights

Airports in Costa Rica

Frequently asked questions about flying from Illinois to Costa Rica

Best airlines flying from Illinois to Costa Rica

Compare and see reviews for airlines that fly from Illinois to Costa Rica with momondo

Why use momondo?

An easier way to manage your Costa Rica 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 Costa Rica

Popular cities in Costa Rica

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

Illinois flight routes

According to popular flight searches on momondo this year

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According to popular flight searches on momondo this year

Fly your favorite airline to Costa Rica

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

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List of cabin classes available on flights landing in Costa Rica. Availability may vary depending on flight origin and airline.

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