HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
San Jose

$69+ 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 12/12. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SJC
Dec 6 — Dec 131
Sat 12/6
Sat 12/13
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Illinois to San Jose with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 November 6, 2025.

Most accurate provider

Gotogate
3 stars

Most trusted provider

Gotogate
3 stars

Round-trip from

$222
(Alaska Airlines)

One-way from

$69
(CheapOair)

Popular in

July

Cheapest in

November

Average price

$369

Good round-trip deal

$475 or less

Good one-way deal

$189 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. 5% potential increase in price ($25 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
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

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 November 6, 2025.

This CheapOair deal was found by Cheapflights users on 11/5. 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 11/137:45 pmSTL - SJC
1 stop17h 47mFrontier
Mon 11/1712:27 pmSJC - STL
1 stop18h 40mFrontier
Deal found 11/5$222
This Alaska Airlines deal was found by Cheapflights users on 11/6. 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 12/98:55 amORD - SJC
1 stop10h 42mAlaska Airlines
Tue 1/68:00 pmSJC - ORD
1 stop16h 29mAlaska Airlines
Deal found 11/6$232
This SmartFares deal was found by Cheapflights users on 11/6. 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.
Thu 12/48:55 amORD - SJC
1 stop7h 37mAlaska Airlines
Wed 12/103:09 pmSJC - ORD
1 stop6h 41mAlaska Airlines
Deal found 11/6$233
This Alaska Airlines deal was found by Cheapflights users on 11/6. 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.
Fri 12/123:05 pmORD - SJC
1 stop9h 37mAlaska Airlines
Wed 1/77:00 amSJC - ORD
1 stop14h 37mAlaska Airlines
Deal found 11/6$240
This Kiwi.com deal was found by Cheapflights users on 11/6. 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.
Sun 12/76:50 amORD - SJC
1 stop9h 42mMultiple Airlines
Thu 12/187:43 pmSJC - ORD
1 stop8h 22mMultiple Airlines
Deal found 11/6$241
This Alaska Airlines deal was found by Cheapflights users on 11/4. 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 12/38:55 amORD - SJC
1 stop7h 37mAlaska Airlines
Mon 12/87:57 pmSJC - ORD
1 stop16h 12mAlaska Airlines
Deal found 11/4$242
This Alaska Airlines deal was found by Cheapflights users on 11/5. 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 12/178:55 amORD - SJC
1 stop7h 37mAlaska Airlines
Sat 1/107:54 pmSJC - ORD
1 stop25h 43mAlaska Airlines
Deal found 11/5$243
This Kiwi.com deal was found by Cheapflights users on 11/6. 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.
Fri 12/56:50 amORD - SJC
1 stop9h 42mFrontier
Sun 12/78:08 pmSJC - ORD
1 stop26h 05mFrontier
Deal found 11/6$249
This Alaska Airlines deal was found by Cheapflights users on 11/6. 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.
Mon 12/83:05 pmORD - SJC
1 stop9h 37mAlaska Airlines
Mon 1/58:00 pmSJC - ORD
1 stop16h 37mAlaska Airlines
Deal found 11/6$250
This Kiwi.com deal was found by Cheapflights users on 11/5. 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 12/247:44 pmORD - SJC
1 stop20h 48mMultiple Airlines
Thu 1/17:43 pmSJC - ORD
1 stop8h 22mMultiple Airlines
Deal found 11/5$251
This Alaska Airlines deal was found by Cheapflights users on 11/6. 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.
Sat 12/138:00 amORD - SJC
1 stop14h 00mAlaska Airlines
Wed 1/77:00 amSJC - ORD
1 stop14h 37mAlaska Airlines
Deal found 11/6$252
This Cheapflightsfares deal was found by Cheapflights users on 11/6. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/48:55 amORD - SJC
1 stop7h 37mAlaska Airlines
Mon 12/83:09 pmSJC - ORD
1 stop6h 41mAlaska Airlines
Deal found 11/6$256

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 November 6, 2025.
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 12/27

6:00 am-7:23 pm

2 stops15h 23m

San Jose

Sat 1/3

7:00 am-8:02 pm

1 stop11h 02m

$258

ChicagoSan Jose

ORD - SJC

ORDSJC

Chicago O'Hare Intl

Thu 12/4

3:05 pm-10:42 pm

1 stop9h 37m

San Jose

Sun 12/7

5:45 pm-2:09 pm

1 stop18h 24m

$258

ChicagoSan Jose

ORD - SJC

ORDSJC

Chicago O'Hare Intl

Wed 12/3

3:05 pm-11:58 am

1 stop22h 53m

San Jose

Sat 12/6

3:09 pm-2:09 pm

1 stop21h 00m

$272

St. LouisSan Jose

STL - SJC

STLSJC

Lambert-St Louis

Tue 1/27

6:10 am-5:40 pm

2 stops13h 30m

San Jose

Thu 1/29

11:40 am-11:25 pm

2 stops9h 45m

$274

St. LouisSan Jose

STL - SJC

STLSJC

Lambert-St Louis

Thu 12/11

6:15 am-3:54 pm

2 stops11h 39m

San Jose

Sat 1/17

7:15 am-9:35 pm

2 stops12h 20m

$274

St. LouisSan Jose

STL - SJC

STLSJC

Lambert-St Louis

Wed 12/3

6:15 am-3:54 pm

2 stops11h 39m

San Jose

Wed 12/10

7:45 pm-9:50 am

2 stops12h 05m

$274

ChicagoSan Jose

ORD - SJC

ORDSJC

Chicago O'Hare Intl

Wed 12/17

7:50 am-4:09 pm

2 stops10h 19m

San Jose

Thu 1/8

9:16 am-11:53 pm

2 stops12h 37m

$284

ChicagoSan Jose

ORD - SJC

ORDSJC

Chicago O'Hare Intl

Wed 12/17

8:50 am-3:54 pm

2 stops9h 04m

San Jose

Fri 1/9

11:40 am-11:53 pm

1 stop10h 13m

$298

ChicagoSan Jose

ORD - SJC

ORDSJC

Chicago O'Hare Intl

Sun 1/11

3:49 pm-9:47 am

1 stop19h 58m

San Jose

Fri 1/16

9:05 am-2:38 pm

1 stop27h 33m

$302

ChicagoSan Jose

ORD - SJC

ORDSJC

Chicago O'Hare Intl

Tue 12/23

7:00 am-10:59 pm

1 stop17h 59m

San Jose

Thu 1/1

6:15 am-6:29 am

1 stop22h 14m

$312

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/4

Showing 1-10 of 60 results
1
2
3
...
6

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 December is currently the most expensive (average of $203). 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 November 6, 2025.

Unlike at noon, when flights are generally more expensive, you can save up to 17% on flights from Illinois to San Jose, California by exploring options for tickets in the evening.

What is the cheapest day to fly from Illinois to San Jose, California?

Use this chart to determine the cheapest time to fly round-trip from Illinois to San Jose. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Illinois to San Jose, California flight should consider departing on Wednesday at noon when fares are most often at their lowest. Monday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

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 42m. Illinois and San Jose, California are separated by a distance of 1690 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 $111 on Alaska Airlines. Other airlines that offer cheap prices include Frontier from $123 and Delta from $137 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 $460 for a flight from Illinois to San Jose, California. The cheapest flight overall is $188 while the most popular route, (Chicago O'Hare Intl - San Jose) is currently priced at $134.

  • 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 December is currently the most expensive (average of $203). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Illinois to San Jose

See prices for flight routes from nearby airports that may be better suited for you.
John F Kennedy Intl to Los Angeles flights
John F Kennedy Intl to Las Vegas flights
Newark to Los Angeles flights
John F Kennedy Intl to San Francisco flights
San Francisco to Los Angeles flights
Dallas/Fort Worth to Las Vegas flights
Newark to Las Vegas flights
Seattle to Los Angeles flights
San Francisco to Las Vegas flights
O'Hare Intl to Las Vegas flights
Dallas/Fort Worth to Los Angeles flights
Seattle to Las Vegas flights
Newark to San Francisco flights
Ontario to San Francisco flights
LaGuardia to Los Angeles flights
Los Angeles to San Francisco flights
Santa Ana to San Francisco flights
San Francisco to Santa Ana flights
Dulles Intl to Las Vegas flights
San Francisco to Ontario flights
O'Hare Intl to Los Angeles flights
Denver to Las Vegas flights
Dallas/Fort Worth to San Francisco flights
Boston to Los Angeles flights
Reagan-National to Los Angeles flights
LaGuardia to Las Vegas flights
Boston to Las Vegas flights
Seattle to San Diego flights
Los Angeles to Las Vegas flights
Los Angeles to San Jose flights
Dulles Intl to Los Angeles flights
Minneapolis to Las Vegas flights
Reagan-National to Las Vegas flights
San Jose to Las Vegas flights
Seattle to Santa Ana flights
Seattle to San Francisco flights
Baltimore to Las Vegas flights
LaGuardia to San Francisco flights
Seattle to Ontario flights
Hobby to Las Vegas flights
Baltimore to Los Angeles flights
Atlanta to Las Vegas flights
Detroit to Las Vegas flights
Atlanta to Los Angeles flights
John F Kennedy Intl to San Diego flights
O'Hare Intl to San Francisco flights
Orlando to Las Vegas flights
Cleveland to Las Vegas flights
Burbank to Las Vegas flights
Minneapolis to Los Angeles flights

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 November 6, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$80Average$238FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$142Average$220FlexibilityNo cancel feeOn-time65%
Alaska AirlinesCheapest$260Average$338FlexibilityNo cancel feeOn-time75%
DeltaCheapest$265Average$363FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$288Average$540FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$288Average$506FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$333Average$477FlexibilityNo cancel feeOn-time63%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.