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San Jose

$114+ Cheap flights from Illinois to San Jose (SJC)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/19. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SJC
Aug 5 — Aug 121
Tue 8/5
Tue 8/12
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 July 31, 2025.

Round-trip from

$114
(Orbitz)

Popular in

June

Cheapest in

October

Average price

$444

Good round-trip deal

$288 or less

Good one-way deal

$186 or less
From Illinois to San Jose
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($31 potential increase over avg. RT price).
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Cheapest flight prices on average. 0% potential price decrease ($5 potential savings vs. average RT price).
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Average for round-trip flights in July 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 July 31, 2025.

This Orbitz deal was found by Cheapflights users on 7/29. 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.
Tue 8/196:00 amORD - SJC
1 stop11h 46mSpirit Airlines
Wed 8/204:41 pmSJC - ORD
1 stop10h 09mSpirit Airlines
Deal found 7/29$114
This Alaska Airlines deal was found by Cheapflights users on 7/31. 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 10/148:20 amORD - SJC
1 stop27h 37mAlaska Airlines
Wed 10/151:30 pmSJC - ORD
1 stop8h 29mAlaska Airlines
Deal found 7/31$224
This CheapOair deal was found by Cheapflights users on 7/30. 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.
Mon 9/86:05 pmORD - SJC
1 stop8h 19mMultiple Airlines
Mon 10/1312:17 pmSJC - ORD
1 stop9h 36mMultiple Airlines
Deal found 7/30$242
This Frontier deal was found by Cheapflights users on 7/30. 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.
Sun 8/246:00 amORD - SJC
1 stop7h 16mFrontier
Mon 8/2512:01 pmSJC - ORD
1 stop10h 31mFrontier
Deal found 7/30$258
This FlightHub deal was found by Cheapflights users on 7/29. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/97:52 pmSTL - SJC
1 stop17h 40mFrontier
Mon 10/1312:17 pmSJC - STL
1 stop18h 50mFrontier
Deal found 7/29$265
This Delta deal was found by Cheapflights users on 7/30. 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.
Sat 8/304:25 pmMDW - SJC
1 stop7h 53mDelta
Sat 9/66:25 amSJC - MDW
1 stop9h 12mDelta
Deal found 7/30$268
This FlightHub deal was found by Cheapflights users on 7/30. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/124:29 pmMDW - SJC
1 stop21h 03mFrontier
Fri 10/1712:17 pmSJC - MDW
1 stop8h 21mFrontier
Deal found 7/30$271
This Delta deal was found by Cheapflights users on 7/29. 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.
Thu 9/44:59 pmMLI - SJC
1 stop7h 51mDelta
Tue 9/96:30 amSJC - MLI
1 stop7h 49mDelta
Deal found 7/29$289
This Delta deal was found by Cheapflights users on 7/31. 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 10/82:29 pmSTL - SJC
2 stops9h 39mDelta
Tue 10/1411:35 amSJC - STL
2 stops10h 49mDelta
Deal found 7/31$294
This Southwest deal was found by Cheapflights users on 7/31. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/86:15 amSTL - SJC
1 stop6h 50mSouthwest
Tue 10/144:30 pmSJC - STL
1 stop5h 40mSouthwest
Deal found 7/31$308
This Alaska Airlines deal was found by Cheapflights users on 7/31. 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 10/76:33 amSTL - SJC
1 stop10h 17mAlaska Airlines
Tue 10/1412:38 pmSJC - STL
1 stop9h 25mAlaska Airlines
Deal found 7/31$312
This Southwest deal was found by Cheapflights users on 7/31. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/287:55 pmMDW - SJC
Nonstop4h 30mSouthwest
Thu 9/48:00 amSJC - MDW
Nonstop4h 05mSouthwest
Deal found 7/31$317

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 July 31, 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

Tue 8/19

6:00 am-3:46 pm

1 stop11h 46m

San Jose

Wed 8/20

4:41 pm-4:50 am

1 stop10h 09m

$114

ChicagoSan Jose

ORD - SJC

ORDSJC

Chicago O'Hare Intl

Tue 10/14

8:20 am-9:57 am

1 stop27h 37m

San Jose

Wed 10/15

1:30 pm-11:59 pm

1 stop8h 29m

$224

ChicagoSan Jose

ORD - SJC

ORDSJC

Chicago O'Hare Intl

Mon 9/8

6:05 pm-12:24 am

1 stop8h 19m

San Jose

Mon 10/13

12:17 pm-11:53 pm

1 stop9h 36m

$242

ChicagoSan Jose

ORD - SJC

ORDSJC

Chicago O'Hare Intl

Sun 8/24

6:00 am-11:16 am

1 stop7h 16m

San Jose

Mon 8/25

12:01 pm-12:32 am

1 stop10h 31m

$258

St. LouisSan Jose

STL - SJC

STLSJC

Lambert-St Louis

Thu 10/9

7:52 pm-11:32 am

1 stop17h 40m

San Jose

Mon 10/13

12:17 pm-9:07 am

1 stop18h 50m

$265

ChicagoSan Jose

MDW - SJC

MDWSJC

Chicago Midway

Sat 8/30

4:25 pm-10:18 pm

1 stop7h 53m

San Jose

Sat 9/6

6:25 am-5:37 pm

1 stop9h 12m

$268

ChicagoSan Jose

MDW - SJC

MDWSJC

Chicago Midway

Sun 10/12

4:29 pm-11:32 am

1 stop21h 03m

San Jose

Fri 10/17

12:17 pm-10:38 pm

1 stop8h 21m

$271

MolineSan Jose

MLI - SJC

MLISJC

Moline Quad-City

Thu 9/4

4:59 pm-10:50 pm

1 stop7h 51m

San Jose

Tue 9/9

6:30 am-4:19 pm

1 stop7h 49m

$289

St. LouisSan Jose

STL - SJC

STLSJC

Lambert-St Louis

Wed 10/8

6:00 am-4:15 pm

2 stops12h 15m

San Jose

Wed 10/15

7:15 am-12:24 am

2 stops15h 09m

$294

St. LouisSan Jose

STL - SJC

STLSJC

Lambert-St Louis

Wed 10/8

12:20 pm-5:25 pm

1 stop7h 05m

San Jose

Tue 10/14

4:30 pm-12:10 am

1 stop5h 40m

$308

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

Showing 1-10 of 47 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 July 31, 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.

How much does it cost to fly round-trip from Illinois to San Jose?

Reviews of airlines servicing San Jose

Get insights into the airlines that provide service to San Jose. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Jose. Reviews last updated July 31, 2025.
Read through reviews of airlines operating flights from Illinois to San Jose, such as Alaska Airlines, Southwest, and Delta. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Entertainment

7.1

Boarding

8.1

Overall

8.0

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Entertainment

7.1

Boarding

8.1

Overall

8.0

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,246 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Entertainment

7.1

Boarding

8.1

Overall

8.0

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,981 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Entertainment

7.1

Boarding

8.1

Overall

8.0

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.8
Good
2,611 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Entertainment

7.1

Boarding

8.1

Overall

8.0

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,900 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Entertainment

7.1

Boarding

8.1

Overall

8.0

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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.

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

    The cheapest airline one-way is Frontier, with whom users have recently found tickets for as low as $117. However, be on the lookout for offers from Spirit 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 $475 for a flight from Illinois to San Jose. The cheapest flight overall is $147 while the most popular route, (Chicago O'Hare Intl - San Jose) is currently priced at $160.

  • 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 6 airlines flying from Illinois to San Jose

Discover the top 6 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 July 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$90Average$248FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$127Average$238FlexibilityNo cancel feeOn-time65%
DeltaCheapest$274Average$363FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$288Average$503FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$288Average$512FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$350Average$477FlexibilityNo cancel feeOn-time63%

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