$147 Find Cheap Flights from Illinois to Costa Rica - Compare and Save

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.

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.

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.

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.

There are 10 airports in Costa Rica. The busiest airport is Juan Santamaria Airport (SJO), with 70% of all flights arriving there.

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 $393.

Based on KAYAK data, the cheapest day to fly to Costa Rica is Tuesday where round-trip tickets can be as cheap as $517. On the other hand, the most expensive day to fly is Saturday, where round-trip prices are $714 on average.

The cheapest time of day to fly to Costa Rica is generally in the evening, when round-trip flights cost $512 on average. Morning departures are around 19% more expensive than evening flights, on average. The most expensive time of day to fly to Costa Rica is generally in the afternoon, which is peak travel time and where the average cost of a ticket is $689.

The cheapest ticket to Costa Rica from Illinois found in the last 5 days was to San José, at $400 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 5 days was $400.

The cheapest month for flights from Illinois to Costa Rica is November, when tickets cost $215 (return) on average. On the other hand, the most expensive months are March and July, when the average cost of round-trip tickets is $364 and $362 respectively.

To get a below average price on the flight from Illinois to Costa Rica, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 7 weeks before departure.

An average nonstop flight from Illinois to Costa Rica takes 8h 57m, 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 04m.