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San Jose

$82+ 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 2/8. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SJC
Feb 19 — Feb 261
Thu 2/19
Thu 2/26
1 adult, Economy
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Cheap 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 20, 2026.

This Kiwi.com deal was found by Cheapflights users on 1/19. 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.
Wed 2/113:28 pm
STL
-
SJC
2 stops20h 11m
Frontier
Thu 2/1910:34 am
SJC
-
STL
1 stop8h 52m
Frontier
Deal found 1/19$186
This Expedia deal was found by Cheapflights users on 1/19. 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 2/2610:11 pm
STL
-
SJC
1 stop11h 44m
Frontier
Mon 3/29:35 am
SJC
-
STL
1 stop9h 38m
Frontier
Deal found 1/19$201
This Kiwi.com deal was found by Cheapflights users on 1/19. 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.
Sat 2/142:51 pm
STL
-
SJC
2 stops31h 11m
Frontier
Thu 2/1910:34 am
SJC
-
STL
1 stop8h 52m
Frontier
Deal found 1/19$214
This Travelocity deal was found by Cheapflights users on 1/18. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/118:00 am
ORD
-
SJC
1 stop8h 42m
Multiple Airlines
Thu 2/1910:34 am
SJC
-
ORD
1 stop8h 29m
Multiple Airlines
Deal found 1/18$219
This CheapOair deal was found by Cheapflights users on 1/19. 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
Mon 2/210:37 am
SJC
-
STL
1 stop8h 13m
Frontier
Deal found 1/19$223
This Kiwi.com deal was found by Cheapflights users on 1/18. 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.
Wed 3/43:07 pm
ORD
-
SJC
1 stop9h 49m
Hawaiian Airlines
Wed 3/112:36 pm
SJC
-
ORD
1 stop7h 20m
Hawaiian Airlines
Deal found 1/18$229
This Alaska Airlines deal was found by Cheapflights users on 1/19. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/103:44 pm
ORD
-
SJC
1 stop8h 51m
Alaska Airlines
Wed 2/1812:45 pm
SJC
-
ORD
1 stop9h 14m
Alaska Airlines
Deal found 1/19$250
This Expedia deal was found by Cheapflights users on 1/18. 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 3/63:54 pm
ORD
-
SJC
1 stop9h 05m
Multiple Airlines
Mon 3/98:20 pm
SJC
-
ORD
1 stop7h 48m
Multiple Airlines
Deal found 1/18$251
This Delta deal was found by Cheapflights users on 1/19. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/183:40 pm
STL
-
SJC
1 stop7h 13m
Delta
Sat 2/215:45 am
SJC
-
STL
1 stop5h 47m
Delta
Deal found 1/19$257
This Alaska Airlines deal was found by Cheapflights users on 1/18. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/226:00 am
ORD
-
SJC
1 stop9h 50m
Alaska Airlines
Sat 4/257:43 pm
SJC
-
ORD
1 stop8h 57m
Alaska Airlines
Deal found 1/18$257
This Alaska Airlines deal was found by Cheapflights users on 1/19. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/103:44 pm
ORD
-
SJC
1 stop8h 51m
Alaska Airlines
Thu 2/198:00 am
SJC
-
ORD
1 stop28h 11m
Alaska Airlines
Deal found 1/19$260
This CheapOair deal was found by Cheapflights users on 1/18. 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.
Fri 4/312:50 pm
ORD
-
SJC
1 stop8h 47m
Frontier
Mon 4/138:32 pm
SJC
-
ORD
1 stop7h 07m
Frontier
Deal found 1/18$261

Find 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 20, 2026.

Most accurate provider

Gotogate
3 stars

Most trusted provider

Gotogate
3 stars

Round-trip from

$186
(Kiwi.com)

One-way from

$82
(Trip.com)

Popular in

December

Cheapest in

October

Average price

$420

Good round-trip deal

$380 or less

Good one-way deal

$193 or less
Provider with most accurate pricing for Chicago (CHI)-San Jose flight deals.
Search Deals
Provider most trusted by Cheapflights users for Chicago (CHI)-San Jose flights.
Search Deals
From Illinois to San Jose
Search Deals
One-way flight from Illinois to San Jose
Search Deals
Highest demand for flights based on searches. 4% potential increase in price ($20 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals
Price to beat on a round-trip flight from Illinois to San Jose.
Search Deals
Price to beat on a one-way flight from Illinois to San Jose.
Search Deals

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 20, 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

St. LouisSan Jose

STL - SJC

STLSJC

Lambert-St Louis

Wed 4/15

3:25 pm-8:33 pm

1 stop7h 08m

San Jose

Tue 4/21

1:23 pm-11:33 pm

1 stop8h 10m

$257

St. LouisSan Jose

STL - SJC

STLSJC

Lambert-St Louis

Wed 2/18

2:45 pm-9:05 pm

1 stop8h 20m

San Jose

Wed 2/25

8:50 am-4:58 pm

1 stop6h 08m

$257

St. LouisSan Jose

STL - SJC

STLSJC

Lambert-St Louis

Tue 4/7

6:12 pm-11:58 pm

1 stop7h 46m

San Jose

Wed 4/15

4:50 pm-12:22 am

1 stop5h 32m

$257

St. LouisSan Jose

STL - SJC

STLSJC

Lambert-St Louis

Tue 2/10

3:31 pm-9:28 pm

1 stop7h 57m

San Jose

Thu 2/19

7:15 am-12:25 am

2 stops15h 10m

$265

St. LouisSan Jose

STL - SJC

STLSJC

Lambert-St Louis

Fri 2/27

2:22 pm-10:05 pm

2 stops9h 43m

San Jose

Mon 3/2

6:25 pm-9:32 am

2 stops13h 07m

$274

ChicagoSan Jose

ORD - SJC

ORDSJC

Chicago O'Hare Intl

Wed 4/15

2:09 pm-7:32 pm

1 stop7h 23m

San Jose

Sat 4/18

8:39 pm-11:59 pm

1 stop25h 20m

$280

ChicagoSan Jose

ORD - SJC

ORDSJC

Chicago O'Hare Intl

Thu 2/19

1:00 pm-10:59 pm

1 stop11h 59m

San Jose

Sat 2/21

7:00 am-11:59 pm

1 stop14h 59m

$283

ChicagoSan Jose

ORD - SJC

ORDSJC

Chicago O'Hare Intl

Thu 2/19

2:20 pm-10:05 pm

1 stop9h 45m

San Jose

Fri 2/20

2:25 pm-11:52 pm

1 stop7h 27m

$283

ChicagoSan Jose

ORD - SJC

ORDSJC

Chicago O'Hare Intl

Tue 3/24

7:25 am-5:31 pm

1 stop12h 06m

San Jose

Wed 3/25

11:40 am-11:52 pm

1 stop10h 12m

$283

ChicagoSan Jose

ORD - SJC

ORDSJC

Chicago O'Hare Intl

Wed 3/18

7:25 am-2:57 pm

1 stop9h 32m

San Jose

Wed 3/25

11:40 am-11:52 pm

1 stop10h 12m

$283

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/18

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 20, 2026.

Unlike in the morning, when flights are generally more expensive, you can save up to 37% 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 7h 08m. Illinois and San Jose, California are separated by a distance of 1710 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 $400 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 $229.

  • 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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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 20, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$80Average$193FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$133Average$201FlexibilityNo cancel feeOn-time65%
DeltaCheapest$189Average$363FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$262Average$366FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$273Average$538FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$288Average$567FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$333Average$497FlexibilityNo cancel feeOn-time63%

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