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San Jose

$81+ Cheap flights from Illinois to San Jose, CA (SJC)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/7. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SJC
Feb 11 — Feb 181
Wed 2/11
Wed 2/18
1 adult, Economy
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Cheap flight deals from Illinois to San Jose

Keep the following information in mind while searching for Illinois to San Jose flight deals. Data was last updated January 12, 2026.

Most accurate provider

Gotogate
3 stars

Most trusted provider

Gotogate
3 stars

Round-trip from

$186
(CheapOair)

One-way from

$81
(Booking.com)

Popular in

December

Cheapest in

February

Average price

$416

Good round-trip deal

$430 or less

Good one-way deal

$193 or less
Provider with most accurate pricing for Chicago (CHI)-San Jose flight deals.
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Provider most trusted by Cheapflights users for Chicago (CHI)-San Jose flights.
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From Illinois to San Jose
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One-way flight from Illinois to San Jose
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Highest demand for flights based on searches. 5% potential increase in price ($23 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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Price to beat on a round-trip flight from Illinois to San Jose.
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Price to beat on a one-way flight from Illinois to San Jose.
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Find flight deals from Illinois to San Jose

Cheapest flights from Illinois to San Jose
Explore the most affordable flight options available from Illinois to San Jose. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 12, 2026.

This CheapOair deal was found by Cheapflights users on 1/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/118:55 pm
ORD
-
SJC
1 stop23h 12m
Frontier
Mon 3/1610:20 am
SJC
-
ORD
1 stop16h 29m
Frontier
Deal found 1/10$186
This Mytrip deal was found by Cheapflights users on 1/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/266:34 pm
ORD
-
SJC
1 stop15h 21m
Frontier
Thu 3/510:34 am
SJC
-
ORD
1 stop17h 34m
Frontier
Deal found 1/12$205
This CheapOair deal was found by Cheapflights users on 1/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/96:12 pm
ORD
-
SJC
1 stop22h 20m
Frontier
Sun 4/128:08 pm
SJC
-
ORD
1 stop17h 50m
Frontier
Deal found 1/10$211
This CheapOair deal was found by Cheapflights users on 1/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/188:55 pm
ORD
-
SJC
1 stop23h 12m
Frontier
Mon 3/2310:20 am
SJC
-
ORD
1 stop16h 29m
Frontier
Deal found 1/10$216
This Expedia deal was found by Cheapflights users on 1/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/267:39 pm
ORD
-
SJC
1 stop25h 46m
Frontier
Mon 3/307:02 pm
SJC
-
ORD
1 stop7h 57m
Frontier
Deal found 1/10$220
This CheapOair deal was found by Cheapflights users on 1/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/128:55 pm
ORD
-
SJC
1 stop14h 30m
Frontier
Mon 3/167:42 pm
SJC
-
ORD
1 stop8h 26m
Frontier
Deal found 1/10$221
This CheapOair deal was found by Cheapflights users on 1/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/2610:11 pm
STL
-
SJC
1 stop11h 44m
Frontier
Mon 3/29:35 am
SJC
-
STL
1 stop9h 38m
Frontier
Deal found 1/11$237
This SmartFares deal was found by Cheapflights users on 1/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/143:07 pm
ORD
-
SJC
1 stop9h 49m
Alaska Airlines
Sat 2/2112:45 pm
SJC
-
ORD
1 stop9h 14m
Alaska Airlines
Deal found 1/11$242
This CheapOair deal was found by Cheapflights users on 1/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/118:55 pm
ORD
-
SJC
1 stop23h 12m
Frontier
Sun 3/157:02 pm
SJC
-
ORD
1 stop7h 47m
Frontier
Deal found 1/11$246
This Kiwi.com deal was found by Cheapflights users on 1/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/57:00 am
ORD
-
SJC
1 stop8h 42m
Hawaiian Airlines
Wed 3/1112:45 pm
SJC
-
ORD
1 stop9h 14m
Hawaiian Airlines
Deal found 1/12$250
This Expedia deal was found by Cheapflights users on 1/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/61:00 pm
ORD
-
SJC
1 stop9h 00m
Multiple Airlines
Mon 3/97:02 pm
SJC
-
ORD
1 stop7h 47m
Multiple Airlines
Deal found 1/11$251
This CheapOair deal was found by Cheapflights users on 1/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/2910:01 pm
STL
-
SJC
1 stop12h 39m
Frontier
Sun 2/11:04 pm
SJC
-
STL
1 stop5h 33m
Frontier
Deal found 1/12$271

Cheapflights Fare Finder

 
Customize your flight search to find flights from Illinois to San Jose that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 12, 2026.
Use the filters below to find and compare flights from Illinois to San Jose that are best for you.

Fly from

Illinois

Fly to

San Jose

Route

Depart

Return

Price

ChicagoSan Jose

ORD - SJC

ORDSJC

Chicago O'Hare Intl

Sat 2/14

3:07 pm-10:56 pm

1 stop9h 49m

San Jose

Sat 2/21

10:24 am-11:59 pm

1 stop11h 35m

$263

ChicagoSan Jose

ORD - SJC

ORDSJC

Chicago O'Hare Intl

Tue 3/10

8:20 am-10:56 pm

1 stop16h 36m

San Jose

Sat 3/14

7:00 am-11:59 pm

1 stop14h 59m

$263

ChicagoSan Jose

ORD - SJC

ORDSJC

Chicago O'Hare Intl

Wed 2/11

3:44 pm-10:35 pm

1 stop8h 51m

San Jose

Wed 2/18

12:45 pm-11:59 pm

1 stop9h 14m

$263

ChicagoSan Jose

ORD - SJC

ORDSJC

Chicago O'Hare Intl

Fri 2/27

5:29 pm-8:00 pm

1 stop28h 31m

San Jose

Sat 3/7

12:45 pm-11:59 pm

1 stop9h 14m

$273

St. LouisSan Jose

STL - SJC

STLSJC

Lambert-St Louis

Fri 2/27

7:00 am-5:38 pm

2 stops12h 38m

San Jose

Mon 3/2

6:25 pm-9:32 am

2 stops13h 07m

$274

ChicagoSan Jose

ORD - SJC

ORDSJC

Chicago O'Hare Intl

Sun 2/15

7:40 am-1:37 pm

1 stop7h 57m

San Jose

Fri 2/20

11:45 am-11:52 pm

1 stop10h 07m

$283

ChicagoSan Jose

ORD - SJC

ORDSJC

Chicago O'Hare Intl

Tue 3/17

7:40 am-2:13 pm

1 stop8h 33m

San Jose

Tue 3/17

4:59 pm-11:59 pm

1 stop29h 00m

$283

ChicagoSan Jose

ORD - SJC

ORDSJC

Chicago O'Hare Intl

Sat 3/14

7:00 am-8:00 pm

1 stop15h 00m

San Jose

Tue 3/17

2:50 pm-11:59 pm

1 stop7h 09m

$283

ChicagoSan Jose

ORD - SJC

ORDSJC

Chicago O'Hare Intl

Fri 2/27

8:20 am-12:08 pm

1 stop29h 48m

San Jose

Sun 3/1

8:00 am-12:01 pm

1 stop26h 01m

$283

ChicagoSan Jose

ORD - SJC

ORDSJC

Chicago O'Hare Intl

Fri 2/6

3:44 pm-10:35 pm

1 stop8h 51m

San Jose

Sat 2/7

12:46 pm-11:37 pm

1 stop8h 51m

$288

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/12

Showing 1-10 of 60 results
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Best time to book a flight from Illinois to San Jose

Have a flexible travel schedule? Discover the best time to fly to San Jose from Illinois with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Illinois to San Jose

What is the cheapest month to book a flight from Illinois to San Jose, California?

Currently, October is the cheapest month in which you can book a flight from Illinois to San Jose, California (average of $80). Flying from Illinois to San Jose, California in November is currently the most expensive (average of $207). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from IL to SJC?

Find hourly flight availability from Illinois to San Jose. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated January 12, 2026.

Unlike in the morning, when flights are generally more expensive, you can save up to 31% on flights from Illinois to San Jose, California by exploring options for tickets at noon.

Related info for your journey

Find useful and relevant information for your journey from Illinois to San Jose. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to San Jose from Illinois?

    For a flight from Illinois to San Jose, you will be flying into San Jose. San Jose (SJC) is just 2.9 mi from the center of the city.

  • How long is the flight from Illinois to San Jose, California?

    Departing from Illinois to San Jose, California will take you 9h 49m. Illinois and San Jose, California are separated by a distance of 1824 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines to fly from Illinois to San Jose, California one-way?

    One-way options have recently been found by users for as low as $58 on Spirit Airlines. Other airlines that offer cheap prices include American Airlines from $64 and Frontier from $80 one-way.

  • What are the most popular routes from Illinois to San Jose, California?

    The most popular flight routes from Illinois to San Jose, California are Chicago O'Hare Intl - San Jose, Chicago Midway - San Jose and Lambert-St Louis - San Jose.

  • What are the cheapest flights from Illinois to San Jose, California?

    On average you can expect to pay $368 for a flight from Illinois to San Jose, California. The cheapest flight overall is $244 while the most popular route, (Chicago O'Hare Intl - San Jose) is currently priced at $179.

  • Can I find deals for flights from Illinois to San Jose that include hotel bookings?

    Yes. In addition to deals on Illinois to San Jose flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Illinois to San Jose?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Illinois to San Jose.

  • Can I find deals for business class flights from Illinois to San Jose?

    Yes. Cheapflights offers flight deals from Illinois to San Jose by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Illinois to San Jose, California?

    Currently, October is the cheapest month in which you can book a flight from Illinois to San Jose, California (average of $80). Flying from Illinois to San Jose, California in November is currently the most expensive (average of $207). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Illinois to San Jose

See prices for flight routes from nearby airports that may be better suited for you.
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Top 7 airlines flying from Illinois to San Jose

Discover the top 7 airlines that operate flights from Illinois to San Jose. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 12, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$80Average$222FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$133Average$201FlexibilityNo cancel feeOn-time65%
DeltaCheapest$189Average$363FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$262Average$361FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$288Average$537FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$288Average$536FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$333Average$484FlexibilityNo cancel feeOn-time63%

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