$118 Find Cheap Flights from Illinois to Costa Rica

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Useful Info

Good to know

Low seasonSeptember
High seasonDecember
Cheapest flight$118
Best time to beat the crowds with an average 19% drop in price.
Most popular time to fly with an average 40% increase in price.
Flight from Chicago O'Hare Airport to San José

FAQs for booking flights from Illinois to Costa Rica

  • How does KAYAK find such low prices on flights from Illinois to Costa Rica?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Illinois to Costa Rica.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Illinois to Costa Rica?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Illinois to Costa Rica is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Illinois to Costa Rica?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Illinois to Costa Rica with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Illinois to Costa Rica?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Illinois to Costa Rica up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • Which is the cheapest airport to fly into in Costa Rica?

    Prices will differ depending on the departure airport, but generally, the cheapest airport to fly to in Costa Rica is San José Juan Santamaria Intl Airport (SJO), with an average flight price of $267.

  • What is the cheapest day to fly to Costa Rica?

    Based on KAYAK data, the cheapest day to fly to Costa Rica is Tuesday where round-trip tickets can be as cheap as $581. On the other hand, the most expensive day to fly is Saturday, where round-trip prices are $817 on average.

  • What is the cheapest time of day to fly to Costa Rica?

    The cheapest time of day to fly to Costa Rica is generally at night, when round-trip flights cost $436 on average. Morning departures are around 35% more expensive than evening flights, on average. The most expensive time of day to fly to Costa Rica is generally in the morning, which is peak travel time and where the average cost of a ticket is $768.

  • What is the cheapest flight to Costa Rica?

    The cheapest ticket to Costa Rica from Illinois found in the last 72 hours was to San José, at $441 round-trip. The most popular route is Chicago O'Hare Intl Airport (ORD) to San José (SJO) and the cheapest round-trip airline ticket found on this route in the last 72 hours was $441.

  • What is the cheapest month to fly from Illinois to Costa Rica?

    The cheapest month for flights from Illinois to Costa Rica is July, when tickets cost $554 (return) on average. On the other hand, the most expensive months are December and March, when the average cost of round-trip tickets is $1,133 and $917 respectively.

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

    To get a below average price on the flight from Illinois to Costa Rica, you should book around 2 weeks before departure. For the absolute cheapest price, our data suggests you should book 9 weeks before departure.

  • How long is the flight to Costa Rica?

    An average nonstop flight from Illinois to Costa Rica takes 8h 07m, covering a distance of 2126 miles. The shortest route is Chicago O'Hare Intl Airport (ORD) to Liberia (LIR) with an average flight time of 5h 01m.

  • What are the most popular destinations in Costa Rica?

    Based on KAYAK flight searches, the most popular destination is San José (53% of total searches to Costa Rica). The next most popular destination is Liberia (47%).

Book cheap flights from Illinois to Costa Rica

Recent round-trip flight deals

9/6Sat
2 stopsSpirit Airlines
15h 18mORD-SJO
9/9Tue
2 stopsSpirit Airlines
23h 50mSJO-ORD
$273
9/6Sat
2 stopsSpirit Airlines
15h 18mORD-SJO
9/13Sat
2 stopsSpirit Airlines
21h 15mSJO-ORD
$283
9/8Mon
1 stopAmerican Airlines
10h 07mSTL-SJO
9/24Wed
1 stopAmerican Airlines
11h 48mSJO-STL
$286
11/18Tue
1 stopAmerican Airlines
9h 01mSTL-SJO
11/25Tue
1 stopAmerican Airlines
14h 41mSJO-STL
$290
9/22Mon
1 stopDelta
7h 04mSTL-SJO
9/25Thu
1 stopDelta
8h 49mSJO-STL
$296
9/1Mon
1 stopDelta
7h 00mSTL-LIR
9/11Thu
1 stopDelta
8h 59mLIR-STL
$305
8/12Tue
1 stopUnited Airlines
10h 22mSTL-SJO
8/19Tue
1 stopUnited Airlines
10h 03mSJO-STL
$313
10/7Tue
1 stopSouthwest
7h 35mSTL-SJO
10/11Sat
1 stopSouthwest
7h 35mSJO-STL
$330
8/16Sat
1 stopSouthwest
12h 55mSTL-SJO
8/23Sat
1 stopSouthwest
11h 55mSJO-STL
$397
9/16Tue
1 stopUnited Airlines
6h 55mSTL-LIR
9/19Fri
1 stopUnited Airlines
7h 48mLIR-STL
$405

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Recent one-way flight deals

8/23Sat
2 stopsSpirit Airlines
15h 25mORD-SJO
$118
9/16Tue
2 stopsSpirit Airlines
21h 23mORD-SJO
$124
8/19Tue
1 stopAmerican Airlines
7h 29mSTL-SJO
$127
8/25Mon
1 stop
9h 17mORD-SJO
$146
8/23Sat
1 stopFrontier
7h 14mMDW-SJO
$153
12/30Tue
2 stopsAmerican Airlines
27h 05mSTL-SJO
$158
8/30Sat
1 stopFrontier
7h 14mMDW-SJO
$159
8/2Sat
1 stop
15h 31mORD-SJO
$168
8/18Mon
1 stopDelta
7h 15mORD-LIR
$174
8/24Sun
2 stopsDelta
18h 43mMDW-LIR
$174

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Last minute flights from Illinois to Costa Rica

Last minute flight, train and bus deals

7/22Tue
multi-stopAmerican Airlines
16h 01mSTL-SJO
7/26Sat
multi-stopAmerican Airlines
17h 34mSJO-STL
$396
7/22Tue
multi-stopAmerican Airlines
15h 46mSTL-SJO
7/26Sat
multi-stopAmerican Airlines
17h 34mSJO-STL
$400
7/22Tue
multi-stopSpirit Airlines
28h 02mORD-SJO
7/26Sat
multi-stopSpirit Airlines
11h 03mSJO-ORD
$443
7/22Tue
multi-stop
7h 06mORD-SJO
7/26Sat
multi-stop
8h 42mSJO-ORD
$454
7/22Tue
multi-stopSpirit Airlines
18h 09mORD-SJO
7/26Sat
multi-stopSpirit Airlines
11h 03mSJO-ORD
$472
7/20Sun
multi-stop
12h 07mORD-SJO
7/30Wed
multi-stop
9h 57mSJO-ORD
$494
7/19Sat
nonstopUnited Airlines
5h 14mORD-SJO
7/25Fri
multi-stopUnited Airlines
10h 59mSJO-ORD
$498
7/20Sun
multi-stopSouthwest
6h 20mSTL-SJO
7/22Tue
multi-stopSouthwest
13h 15mSJO-STL
$537
7/20Sun
multi-stopSouthwest
6h 55mMDW-SJO
7/22Tue
multi-stopSouthwest
8h 25mSJO-MDW
$537
7/20Sun
nonstopUnited Airlines
5h 14mORD-SJO
7/22Tue
multi-stopUnited Airlines
8h 21mSJO-ORD
$591

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Everything you need to know for your flight to Costa Rica

Cabin class types available on flights to Illinois

Cabin classes available on flights to Illinois. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.
First Class flights to Costa Ricafrom $905
Business Class flights to Costa Ricafrom $1,174
Prem Econ Class flights to Costa Ricafrom $1,344
Economy Class flights to Costa Ricafrom $441

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