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San Jose

$79+ Cheap flights from Illinois to San Jose (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 10/3. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SJC
Oct 16 — Oct 231
Thu 10/16
Thu 10/23
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 September 16, 2025.

Round-trip from

$192
(Kiwi.com)

One-way from

$79
(Kiwi.com)

Popular in

September

Cheapest in

October

Average price

$517

Good round-trip deal

$343 or less

Good one-way deal

$155 or less
From Illinois to San Jose
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One-way flight from Illinois to San Jose
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High demand for flights, 3% potential price rise
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Cheapest flight prices on average. 1% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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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 September 16, 2025.

This Trip.com deal was found by Cheapflights users on 9/15. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/3011:15 amORD - SJC
1 stop10h 45mMultiple Airlines
Sun 10/512:26 pmSJC - ORD
1 stop19h 11mMultiple Airlines
Deal found 9/15$200
This Orbitz deal was found by Cheapflights users on 9/15. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/276:50 amORD - SJC
1 stop6h 42mMultiple Airlines
Wed 10/2910:25 amSJC - ORD
1 stop6h 34mMultiple Airlines
Deal found 9/15$204
This CheapOair deal was found by Cheapflights users on 9/15. 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 10/25:35 amORD - SJC
1 stop9h 39mFrontier
Mon 10/66:45 pmSJC - ORD
2 stops27h 08mFrontier
Deal found 9/15$206
This Frontier deal was found by Cheapflights users on 9/16. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/296:00 amORD - SJC
1 stop7h 30mFrontier
Thu 10/22:14 pmSJC - ORD
1 stop7h 45mFrontier
Deal found 9/16$210
This Kiwi.com deal was found by Cheapflights users on 9/14. 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 10/176:50 amORD - SJC
1 stop6h 42mFrontier
Mon 10/206:43 pmSJC - ORD
2 stops27h 10mFrontier
Deal found 9/14$218
This Expedia deal was found by Cheapflights users on 9/14. 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.
Tue 9/3011:15 amORD - SJC
1 stop10h 45mMultiple Airlines
Wed 10/156:25 amSJC - ORD
1 stop10h 34mMultiple Airlines
Deal found 9/14$219
This Kiwi.com deal was found by Cheapflights users on 9/15. 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.
Mon 9/296:05 pmORD - SJC
1 stop18h 40mMultiple Airlines
Mon 10/66:45 pmSJC - ORD
2 stops27h 08mMultiple Airlines
Deal found 9/15$220
This Orbitz deal was found by Cheapflights users on 9/14. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/111:15 amORD - SJC
1 stop10h 45mMultiple Airlines
Wed 10/86:42 amSJC - ORD
1 stop10h 17mMultiple Airlines
Deal found 9/14$221
This Kiwi.com deal was found by Cheapflights users on 9/14. 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 10/36:00 amORD - SJC
1 stop7h 30mMultiple Airlines
Mon 10/66:45 pmSJC - ORD
1 stop24h 03mMultiple Airlines
Deal found 9/14$222
This Kiwi.com deal was found by Cheapflights users on 9/14. 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 10/111:15 amORD - SJC
1 stop10h 45mMultiple Airlines
Tue 10/71:30 pmSJC - ORD
1 stop8h 29mMultiple Airlines
Deal found 9/14$223
This Kiwi.com deal was found by Cheapflights users on 9/15. 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.
Tue 9/3011:15 amORD - SJC
1 stop10h 45mMultiple Airlines
Wed 10/111:40 amSJC - ORD
2 stops19h 57mMultiple Airlines
Deal found 9/15$225
This Frontier deal was found by Cheapflights users on 9/16. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/239:26 pmMDW - SJC
2 stops16h 06mFrontier
Sun 10/2612:27 pmSJC - MDW
1 stop10h 09mFrontier
Deal found 9/16$238

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 September 16, 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

Sun 11/16

8:59 pm-9:48 am

1 stop14h 49m

San Jose

Wed 11/19

10:25 am-7:55 pm

1 stop7h 30m

$257

ChicagoSan Jose

ORD - SJC

ORDSJC

Chicago O'Hare Intl

Tue 11/11

8:59 pm-10:37 pm

1 stop27h 38m

San Jose

Sun 11/16

10:25 am-7:55 pm

1 stop7h 30m

$257

ChicagoSan Jose

ORD - SJC

ORDSJC

Chicago O'Hare Intl

Fri 2/20

2:05 pm-12:15 pm

1 stop24h 10m

San Jose

Sun 2/22

12:45 pm-11:10 pm

1 stop8h 25m

$275

ChicagoSan Jose

ORD - SJC

ORDSJC

Chicago O'Hare Intl

Sun 12/7

7:59 pm-12:02 pm

1 stop18h 03m

San Jose

Sun 12/14

12:39 pm-11:50 pm

1 stop9h 11m

$280

ChicagoSan Jose

ORD - SJC

ORDSJC

Chicago O'Hare Intl

Fri 10/31

5:53 pm-8:55 am

2 stops17h 02m

San Jose

Mon 11/3

8:05 pm-1:54 pm

1 stop15h 49m

$287

MolineSan Jose

MLI - SJC

MLISJC

Moline Quad-City

Wed 2/4

3:47 pm-8:50 pm

1 stop7h 03m

San Jose

Wed 2/11

5:53 am-2:21 pm

1 stop6h 28m

$289

ChicagoSan Jose

ORD - SJC

ORDSJC

Chicago O'Hare Intl

Fri 11/7

9:20 am-2:23 pm

1 stop7h 03m

San Jose

Tue 11/11

10:25 am-7:55 pm

1 stop7h 30m

$290

ChicagoSan Jose

ORD - SJC

ORDSJC

Chicago O'Hare Intl

Thu 10/9

3:50 pm-10:39 pm

1 stop8h 49m

San Jose

Mon 10/13

7:54 pm-2:50 pm

1 stop16h 56m

$308

MolineSan Jose

MLI - SJC

MLISJC

Moline Quad-City

Thu 10/2

4:59 pm-10:50 pm

1 stop7h 51m

San Jose

Tue 10/7

12:40 pm-10:20 pm

1 stop7h 40m

$314

MolineSan Jose

MLI - SJC

MLISJC

Moline Quad-City

Wed 10/1

4:59 pm-10:50 pm

1 stop7h 51m

San Jose

Tue 10/7

12:40 pm-10:20 pm

1 stop7h 40m

$314

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

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?

Currently, September is the cheapest month in which you can book a flight from Illinois to San Jose (average of $255). Flying from Illinois to San Jose in June is currently the most expensive (average of $359). 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 September 16, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Illinois to San Jose as you normally would.

Weekly flight availability from Illinois to San Jose

Explore weekly flight availability from Illinois to San Jose. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated September 16, 2025.

The most flights from USIL to SJC are scheduled on a Monday (2 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (1 on average).

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?

    There are many flights that can get you from Illinois to San Jose in 7h 03m. Fly via Alaska Airlines, American Airlines, or Delta to get the fastest option. Illinois and San Jose are separated by a distance of 1690 mi. This flight may include one or multiple stops.

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

    The cheapest airline one-way is Hawaiian Airlines, with whom users have recently found tickets for as low as $119. However, be on the lookout for offers from Alaska Airlines and Delta, as they are both options that can get you from Illinois to San Jose for a low price.

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

    The most popular flight routes from Illinois to San Jose 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?

    On average you can expect to pay $398 for a flight from Illinois to San Jose. The cheapest flight overall is $131 while the most popular route, (Chicago O'Hare Intl - San Jose) is currently priced at $195.

  • 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?

    Currently, September is the cheapest month in which you can book a flight from Illinois to San Jose (average of $255). Flying from Illinois to San Jose in June is currently the most expensive (average of $359). 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 September 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$90Average$244FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$133Average$257FlexibilityNo cancel feeOn-time65%
Alaska AirlinesCheapest$188Average$371FlexibilityNo cancel feeOn-time75%
DeltaCheapest$265Average$363FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$273Average$518FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$288Average$509FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$333Average$483FlexibilityNo cancel feeOn-time63%

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