Cheap flights from Costa Rica to Illinois from $174
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 11/3. 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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Not ready to book? to track prices.Avianca flights from Costa Rica to Illinois
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Copa Airlines flights from Costa Rica to Illinois
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Fly from
Fly to
Route
Depart
Return
LiberiaChicago
LIR Liberia - ORD Chicago O'Hare Intl
LIRORD
Liberia
Tue 11/3
3:20 pm-3:02 pm
1 stop23h 42m
Chicago O'Hare Intl
Tue 11/10
10:15 am-2:10 pm
1 stop27h 55m
LiberiaChicago
LIR Liberia - ORD Chicago O'Hare Intl
LIRORD
Liberia
Mon 11/23
3:10 pm-9:23 am
1 stop18h 13m
Chicago O'Hare Intl
Mon 11/30
3:40 pm-2:20 pm
1 stop22h 40m
San JoséChicago
SJO San José Juan Santamaria Intl - ORD Chicago O'Hare Intl
SJOORD
San José Juan Santamaria Intl
Wed 2/10
1:25 pm-6:57 pm
Nonstop5h 32m
Chicago O'Hare Intl
Wed 2/17
7:02 am-12:15 pm
Nonstop5h 13m
San JoséChicago
SJO San José Juan Santamaria Intl - ORD Chicago O'Hare Intl
SJOORD
San José Juan Santamaria Intl
Fri 3/5
1:25 pm-6:57 pm
Nonstop5h 32m
Chicago O'Hare Intl
Tue 3/9
7:02 am-12:15 pm
Nonstop5h 13m
San JoséChicago
SJO San José Juan Santamaria Intl - ORD Chicago O'Hare Intl
SJOORD
San José Juan Santamaria Intl
Sat 11/7
10:03 am-12:11 am
1 stop14h 08m
Chicago O'Hare Intl
Sat 11/14
2:13 pm-7:02 am
1 stop16h 49m
San JoséChicago
SJO San José Juan Santamaria Intl - ORD Chicago O'Hare Intl
SJOORD
San José Juan Santamaria Intl
Sat 1/23
9:30 am-8:30 pm
1 stop11h 00m
Chicago O'Hare Intl
Sat 1/30
2:20 pm-8:35 am
1 stop18h 15m
San JoséChicago
SJO San José Juan Santamaria Intl - ORD Chicago O'Hare Intl
SJOORD
San José Juan Santamaria Intl
Wed 11/4
9:30 am-8:30 pm
1 stop11h 00m
Chicago O'Hare Intl
Wed 11/11
10:30 pm-4:20 pm
1 stop17h 50m
San JoséChicago
SJO San José Juan Santamaria Intl - ORD Chicago O'Hare Intl
SJOORD
San José Juan Santamaria Intl
Tue 10/27
5:55 pm-1:46 pm
1 stop18h 51m
Chicago O'Hare Intl
Sat 10/31
3:13 pm-7:02 am
1 stop16h 49m
San JoséChicago
SJO San José Juan Santamaria Intl - ORD Chicago O'Hare Intl
SJOORD
San José Juan Santamaria Intl
Fri 12/25
3:37 pm-9:00 am
1 stop17h 23m
Chicago O'Hare Intl
Wed 12/30
4:40 pm-10:35 am
1 stop17h 55m
San JoséChicago
SJO San José Juan Santamaria Intl - ORD Chicago O'Hare Intl
SJOORD
San José Juan Santamaria Intl
Mon 11/16
6:20 am-10:07 pm
1 stop15h 47m
Chicago O'Hare Intl
Thu 12/10
5:00 am-1:43 pm
1 stop8h 43m
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 January. Flight prices, which tend to average around $389, 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 January, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $398.
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 $429. 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 $465. Flights in the morning are often more expensive with an average ticket price of $474.
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 $508 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 $412 on momondo.
What cabin class options are available on Costa Rica to Illinois flights?
There are 2 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.
What is the cheapest airline that flies from Costa Rica to Illinois?
Southwest, Viva, and United Airlines are the most popular carriers operating from Costa Rica to Illinois
What airlines fly to Illinois?
American Airlines, United Airlines and Copa Airlines are the top three most popular airlines that fly to Illinois from Costa Rica according to our data. American Airlines is the first choice among our users, with 45% of people opting to fly with this airline when traveling to Illinois. Keep in mind that there are 5 different airlines that fly to Illinois on a routine basis, so you have a few additional options to choose from.
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
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?
As of October 2026, there are 5 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 (63.50% of total bookings). The next most popular plane models are Boeing 737-800 (8.03%), Boeing 737 MAX 9 (5.47%), and Airbus A320-100/200 (5.11%).
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 | ||
|---|---|---|---|---|---|
| PriceFrom $189 | Free Cancellation | Rating 7.6 1,546 reviews | |||
| PriceFrom $341 | Free Cancellation | Rating 7.0 12,124 reviews | |||
| PriceFrom $360 | Free Cancellation | Rating 7.4 10,292 reviews | |||
| PriceFrom $375 | Free Cancellation | Rating 6.5 2,561 reviews | |||
| PriceFrom $390 | Free Cancellation | Rating 7.9 4,215 reviews |
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.