How does KAYAK find such low prices on flights from Illinois to San José?

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 San José. Visit our flight page for the latest deals!>/a>

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

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San José from Illinois is likely to change within 7 days, so travelers know whether to wait or book now. Visit our flight page for the latest deals!>/a>

What is the Hacker Fare option on flights from Illinois to San José?

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 to San José with an airline and back to Illinois with another airline. Visit our flight page for the latest deals!>/a>

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

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 to San José from Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best. Visit our flight page for the latest deals!>/a>

$101 CHEAP FLIGHTS from Illinois to San José

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Cheap Flights from Illinois to San José

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Illinois to San José that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Last minute

Direct

Recent round-trip flight deals from Illinois to San José

Tue, Oct 14 - Mon, Oct 20

5:05 am - 11:30 amORD-SJO

7h 25m1 stop

12:35 pm - 6:36 pmSJO-ORD

29h 01m1 stop

$269Spirit Airlines

Find Deal

Tue, Sep 23 - Sat, Sep 27

2:04 pm - 11:14 amORD-SJO

22h 10m2 stops

12:19 pm - 10:48 pmSJO-ORD

9h 29m1 stop

$270Spirit Airlines

Find Deal

Fri, Oct 31 - Mon, Nov 3

4:52 pm - 11:30 amSTL-SJO

19h 38m2 stops

1:35 pm - 10:02 amSJO-STL

20h 27m1 stop

$287

Find Deal

Sat, Sep 20 - Sat, Sep 27

10:27 am - 10:40 pmORD-SJO

13h 13m1 stop

12:19 pm - 10:48 pmSJO-ORD

9h 29m1 stop

$307

Find Deal

Tue, Nov 18 - Tue, Nov 25

7:00 am - 10:15 pmSTL-SJO

15h 15m2 stops

7:00 am - 7:30 pmSJO-STL

12h 30m2 stops

$344American Airlines

Find Deal

Tue, Nov 11 - Fri, Nov 14

6:00 am - 1:06 pmMDW-SJO

7h 06m1 stop

2:31 pm - 11:32 pmSJO-MDW

9h 01m1 stop

$344Delta

Find Deal

Sun, Nov 16 - Thu, Nov 27

11:44 am - 10:07 pmSTL-SJO

10h 23m1 stop

2:31 pm - 9:58 pmSJO-STL

7h 27m1 stop

$355Delta

Find Deal

Mon, Sep 22 - Tue, Sep 30

12:35 pm - 6:55 pmSTL-SJO

7h 20m1 stop

8:50 am - 8:00 pmSJO-STL

10h 10m1 stop

$361Southwest

Find Deal

Sun, Nov 2 - Wed, Nov 12

7:30 am - 9:03 pmSTL-SJO

13h 33m2 stops

6:00 am - 11:07 pmSJO-STL

17h 07m2 stops

$364American Airlines

Find Deal

Tue, Nov 11 - Tue, Nov 18

5:05 am - 1:15 pmMDW-SJO

8h 10m1 stop

2:15 pm - 10:10 pmSJO-MDW

7h 55m1 stop

$365Southwest

Find Deal

Useful Info

Low season	September
High season	December
Cheapest flight	$101

Best time to beat the crowds with an average 17% drop in price.

Most popular time to fly with an average 47% increase in price.

Flight from Chicago O'Hare Airport to San José

How does KAYAK find such low prices on flights from Illinois to San José?
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 San José.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Illinois to San José?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San José from Illinois 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 San José?
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 to San José with an airline and back to Illinois with another airline.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Illinois to San José?
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 to San José from Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Heredia

Santa Elena

San Gerardo de Dota

Esterillos Este

San Lorenzo

Everything you need to know for your flight to San José

Airports

Cabin class

Complete your trip

Direct Flights

Flights to other cities

Origins

Other airports

Return flight deals

Information on the airport you'll fly into in San José

San José (SJO)

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.

SJO

$101 Find Cheap Flights from Illinois to San José

KAYAK searches hundreds of travel sites at once for deals on flights to San José

Cheap Flights from Illinois to San José

Recent round-trip flight deals from Illinois to San José

Recent one-way flight deals from Illinois to San José

Recent last minute flight deals from Illinois to San José

Recent direct flight deals from Illinois to San José

Good to know

FAQs for booking flights from Illinois to San José

How does KAYAK find such low prices on flights from Illinois to San José?

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 San José.

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

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San José from Illinois 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 San José?

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 to San José with an airline and back to Illinois with another airline.

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

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 to San José from Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Traveling to a place near San José?

Everything you need to know for your flight to San José

Information on the airport you'll fly into in San José

Cabin class types available on flights to Illinois

Complete your trip to San José with a hotel stay or car rental

Find direct flights for San José

Flights to other popular destinations

Flights from domestic origins to San José

Choose which airport to fly into in San José

Find deals for your return flight