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

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 Jose.

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

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

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 Jose 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 Jose?

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

$133 CHEAP FLIGHTS from Illinois to San Jose

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Flight Deals

Cheap Flights from Illinois to San Jose

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 Jose

Thu, Oct 8 - Thu, Oct 15

8:01 pm - 8:07 pmORD Chicago O'Hare Intl-SJC San Jose

26h 06m1 stop Los Angeles

2:15 pm - 6:34 amSJC San Jose-ORD Chicago O'Hare Intl

14h 19m1 stop Los Angeles

$261Frontier

Tue, Oct 27 - Mon, Nov 2

6:20 am - 11:20 amSTL Lambert-St Louis-SJC San Jose

7h 00m1 stop Phoenix Sky Harbor Intl

6:30 am - 4:00 pmSJC San Jose-STL Lambert-St Louis

7h 30m1 stop Dallas Love Field

$262Southwest

Tue, Oct 27 - Mon, Nov 2

4:55 pm - 9:05 pmSTL Lambert-St Louis-SJC San Jose

6h 10m1 stop Phoenix Sky Harbor Intl

10:10 am - 7:10 pmSJC San Jose-STL Lambert-St Louis

7h 00m2 stops San Diego Omaha Eppley Airfield

$267Southwest

Thu, Oct 15 - Mon, Oct 19

8:01 pm - 8:07 pmORD Chicago O'Hare Intl-SJC San Jose

26h 06m1 stop Los Angeles

2:15 pm - 6:34 amSJC San Jose-ORD Chicago O'Hare Intl

14h 19m1 stop Los Angeles

$275Frontier

Sat, Dec 12 - Tue, Jan 12

7:08 am - 8:08 pmSTL Lambert-St Louis-SJC San Jose

15h 00m2 stops Salt Lake City Seattle/Tacoma Intl

7:15 am - 8:37 pmSJC San Jose-STL Lambert-St Louis

11h 22m2 stops Seattle/Tacoma Intl Detroit Metropolitan Wayne County

$294Delta

Tue, Oct 27 - Tue, Nov 3

7:20 am - 2:55 pmORD Chicago O'Hare Intl-SJC San Jose

9h 35m1 stop San Diego

7:37 am - 6:59 pmSJC San Jose-ORD Chicago O'Hare Intl

9h 22m1 stop San Diego

$295Alaska Airlines

Sat, Oct 24 - Wed, Oct 28

7:00 am - 1:18 pmORD Chicago O'Hare Intl-SJC San Jose

8h 18m1 stop Seattle/Tacoma Intl

10:37 am - 5:40 amSJC San Jose-ORD Chicago O'Hare Intl

17h 03m1 stop Seattle/Tacoma Intl

$295Alaska Airlines

Tue, Oct 20 - Wed, Oct 28

5:00 am - 11:04 amORD Chicago O'Hare Intl-SJC San Jose

8h 04m1 stop Dallas/Fort Worth

12:59 pm - 11:30 pmSJC San Jose-ORD Chicago O'Hare Intl

8h 31m1 stop Phoenix Sky Harbor Intl

$305American Airlines

Sat, Oct 17 - Tue, Oct 20

5:00 am - 12:09 pmORD Chicago O'Hare Intl-SJC San Jose

9h 09m1 stop Phoenix Sky Harbor Intl

12:02 pm - 11:00 pmSJC San Jose-ORD Chicago O'Hare Intl

8h 58m1 stop Dallas/Fort Worth

$305American Airlines

Sat, Dec 12 - Tue, Jan 12

6:03 am - 2:02 pmSTL Lambert-St Louis-SJC San Jose

9h 59m2 stops Minneapolis St Paul Seattle/Tacoma Intl

5:45 am - 1:23 pmSJC San Jose-STL Lambert-St Louis

5h 38m1 stop Salt Lake City

$320Delta

Recent last minute flight deals from Illinois to San Jose

Thu, Sep 17 - Sun, Sep 20

8:55 pm - 12:43 pmORD Chicago O'Hare Intl-SJC San Jose

17h 48m1 stop Las Vegas Harry Reid Intl

10:47 pm - 5:38 amSJC San Jose-ORD Chicago O'Hare Intl

28h 51m1 stop Las Vegas Harry Reid Intl

$402Frontier

Wed, Sep 16 - Sun, Sep 20

1:21 pm - 12:43 pmORD Chicago O'Hare Intl-SJC San Jose

25h 22m1 stop Las Vegas Harry Reid Intl

10:47 pm - 5:38 amSJC San Jose-ORD Chicago O'Hare Intl

28h 51m1 stop Las Vegas Harry Reid Intl

$402Frontier

Fri, Sep 18 - Tue, Oct 6

2:22 pm - 10:27 pmORD Chicago O'Hare Intl-SJC San Jose

10h 05m1 stop Portland

9:15 am - 6:53 pmSJC San Jose-ORD Chicago O'Hare Intl

7h 38m1 stop San Diego

$475Alaska Airlines

Sat, Sep 19 - Wed, Oct 7

8:00 am - 4:36 pmORD Chicago O'Hare Intl-SJC San Jose

10h 36m1 stop Seattle/Tacoma Intl

9:15 am - 6:53 pmSJC San Jose-ORD Chicago O'Hare Intl

7h 38m1 stop San Diego

$475Alaska Airlines

Sun, Sep 20 - Wed, Sep 23

5:00 am - 10:53 amORD Chicago O'Hare Intl-SJC San Jose

7h 53m1 stop Dallas/Fort Worth

2:36 pm - 12:14 amSJC San Jose-ORD Chicago O'Hare Intl

7h 38m1 stop Dallas/Fort Worth

$523American Airlines

Wed, Sep 16 - Wed, Sep 16

5:35 am - 9:10 amSTL Lambert-St Louis-SJC San Jose

5h 35m1 stop Las Vegas Harry Reid Intl

12:00 pm - 10:40 pmSJC San Jose-STL Lambert-St Louis

8h 40m1 stop Phoenix Sky Harbor Intl

$541Southwest

Wed, Sep 16 - Wed, Sep 16

7:00 am - 1:55 pmSTL Lambert-St Louis-SJC San Jose

8h 55m2 stops Denver Intl Phoenix Sky Harbor Intl

11:00 pm - 10:30 amSJC San Jose-STL Lambert-St Louis

9h 30m1 stop Chicago Midway

$552Southwest

Thu, Sep 17 - Wed, Sep 23

2:41 pm - 10:01 pmCMI Champaign University-Willard-SJC San Jose

9h 20m1 stop Dallas/Fort Worth

12:02 pm - 9:46 pmSJC San Jose-CMI Champaign University-Willard

7h 44m1 stop Dallas/Fort Worth

$560American Airlines

Thu, Sep 17 - Sat, Sep 19

5:30 pm - 10:50 pmSTL Lambert-St Louis-SJC San Jose

7h 20m1 stop Chicago O'Hare Intl

6:30 am - 5:06 pmSJC San Jose-STL Lambert-St Louis

8h 36m1 stop Chicago O'Hare Intl

$570United Airlines

Fri, Sep 18 - Wed, Sep 30

6:00 am - 11:46 amPIA Greater Peoria-SJC San Jose

7h 46m1 stop Chicago O'Hare Intl

2:08 pm - 10:58 pmSJC San Jose-PIA Greater Peoria

6h 50m1 stop Chicago O'Hare Intl

$629United Airlines

Useful Info

Low season	January
High season	May
Cheapest flight	$133

Best time to beat the crowds but there is an average 4% increase in price.

Most popular time to fly with an average 12% increase in price.

Flight from Chicago O'Hare Airport to San Jose

How does KAYAK find such low prices on flights from Illinois to San Jose?
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 Jose.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Illinois to San Jose?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Jose 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 Jose?
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 Jose 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 Jose?
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 Jose from Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.