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San Jose

$104+ 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 7/19. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SJC
Jul 5 — Jul 121
Sat 7/5
Sat 7/12
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 June 30, 2025.

Round-trip from

$234
(Trip.com)

One-way from

$106
(Mytrip)

Popular in

June

Cheapest in

October

Average price

$474

Good round-trip deal

$396 or less

Good one-way deal

$249 or less
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. 8% potential increase in price ($38 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).
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Average for round-trip flights in June 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 June 30, 2025.

This Trip.com deal was found by Cheapflights users on 6/30. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/307:29 pmSTL - SJC
1 stop17h 53mFrontier
Sun 8/37:00 pmSJC - STL
1 stop16h 42mFrontier
Deal found 6/30$234
This Frontier deal was found by Cheapflights users on 6/30. 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.
Thu 9/410:18 amMDW - SJC
2 stops10h 09mFrontier
Thu 9/117:12 pmSJC - MDW
2 stops15h 59mFrontier
Deal found 6/30$264
This Mytrip deal was found by Cheapflights users on 6/28. 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.
Wed 7/1611:24 amSTL - SJC
2 stops25h 12mSpirit Airlines
Tue 7/224:22 pmSJC - STL
2 stops16h 07mSpirit Airlines
Deal found 6/28$276
This Kiwi.com deal was found by Cheapflights users on 6/28. 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 7/93:18 pmORD - SJC
1 stop10h 36mSpirit Airlines
Wed 7/234:22 pmSJC - ORD
1 stop11h 41mSpirit Airlines
Deal found 6/28$277
This Orbitz deal was found by Cheapflights users on 6/30. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/105:40 amORD - SJC
2 stops14h 24mMultiple Airlines
Sat 7/123:34 pmSJC - ORD
1 stop12h 29mMultiple Airlines
Deal found 6/30$281
This American Airlines deal was found by Cheapflights users on 6/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/2011:24 amPIA - SJC
1 stop7h 17mAmerican Airlines
Sat 9/276:00 amSJC - PIA
1 stop7h 02mAmerican Airlines
Deal found 6/30$289
This Alaska Airlines deal was found by Cheapflights users on 6/30. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/117:55 pmORD - SJC
1 stop15h 48mAlaska Airlines
Sun 11/1610:23 amSJC - ORD
1 stop25h 31mAlaska Airlines
Deal found 6/30$291
This Delta deal was found by Cheapflights users on 6/28. 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 10/14:59 pmMLI - SJC
1 stop7h 51mDelta
Tue 10/79:05 amSJC - MLI
2 stops11h 25mDelta
Deal found 6/28$294
This Delta deal was found by Cheapflights users on 6/30. 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.
Tue 8/121:43 pmMDW - SJC
1 stop8h 52mDelta
Tue 8/1910:25 pmSJC - MDW
1 stop8h 10mDelta
Deal found 6/30$295
This Southwest deal was found by Cheapflights users on 6/30. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/35:40 pmMDW - SJC
Nonstop4h 30mSouthwest
Wed 9/106:35 amSJC - MDW
Nonstop4h 10mSouthwest
Deal found 6/30$297
This United Airlines deal was found by Cheapflights users on 6/29. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/147:55 pmORD - SJC
Nonstop4h 40mUnited Airlines
Mon 8/256:30 amSJC - ORD
Nonstop4h 25mUnited Airlines
Deal found 6/29$297
This American Airlines deal was found by Cheapflights users on 6/28. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/38:19 amMLI - SJC
2 stops12h 16mAmerican Airlines
Tue 10/79:53 amSJC - MLI
2 stops9h 55mAmerican Airlines
Deal found 6/28$299

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 June 30, 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

St. LouisSan Jose

STL - SJC

STLSJC

Lambert-St Louis

Wed 7/30

7:29 pm-11:22 am

1 stop17h 53m

San Jose

Sun 8/3

7:00 pm-1:42 pm

1 stop16h 42m

$234

ChicagoSan Jose

ORD - SJC

ORDSJC

Chicago O'Hare Intl

Tue 7/29

3:18 pm-11:54 pm

1 stop10h 36m

San Jose

Sun 8/3

6:30 am-2:13 pm

1 stop5h 43m

$258

ChicagoSan Jose

ORD - SJC

ORDSJC

Chicago O'Hare Intl

Fri 9/5

8:10 am-5:55 pm

2 stops11h 45m

San Jose

Mon 9/8

12:25 pm-11:59 pm

1 stop9h 34m

$259

ChicagoSan Jose

MDW - SJC

MDWSJC

Chicago Midway

Thu 9/4

10:18 am-6:27 pm

2 stops10h 09m

San Jose

Thu 9/11

7:12 pm-1:11 pm

2 stops15h 59m

$264

St. LouisSan Jose

STL - SJC

STLSJC

Lambert-St Louis

Wed 7/16

11:24 am-10:36 am

2 stops25h 12m

San Jose

Tue 7/22

4:22 pm-10:29 am

2 stops16h 07m

$276

ChicagoSan Jose

ORD - SJC

ORDSJC

Chicago O'Hare Intl

Thu 7/10

5:40 am-6:04 pm

2 stops14h 24m

San Jose

Sat 7/12

3:34 pm-6:03 am

1 stop12h 29m

$281

PeoriaSan Jose

PIA - SJC

PIASJC

Greater Peoria

Sat 9/20

11:24 am-4:41 pm

1 stop7h 17m

San Jose

Sat 9/27

6:00 am-3:02 pm

1 stop7h 02m

$289

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

9:05 am-10:30 pm

2 stops11h 25m

$294

ChicagoSan Jose

MDW - SJC

MDWSJC

Chicago Midway

Tue 8/12

1:43 pm-8:35 pm

1 stop8h 52m

San Jose

Tue 8/19

10:25 pm-8:35 am

1 stop8h 10m

$295

ChicagoSan Jose

MDW - SJC

MDWSJC

Chicago Midway

Wed 9/3

5:40 pm-8:10 pm

Nonstop4h 30m

San Jose

Wed 9/10

6:35 am-12:45 pm

Nonstop4h 10m

$297

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/30

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 $358). 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 June 30, 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 June 30, 2025.

The most flights from USIL to SJC are scheduled on a Monday (3 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (1 on average).

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 June 30, 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

Overall

8.0

Food

7.1

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Crew

8.5

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

Overall

8.0

Food

7.1

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Crew

8.5

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
4,278 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Food

7.1

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Crew

8.5

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
7,969 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Food

7.1

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Crew

8.5

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
2,533 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Food

7.1

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Crew

8.5

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
8,852 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Overall

8.0

Food

7.1

Comfort

7.8

Entertainment

7.1

Boarding

8.1

Crew

8.5

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 Spirit Airlines, with whom users have recently found tickets for as low as $106. However, be on the lookout for offers from Frontier 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, Moline Quad-City - San Jose and Chicago Midway - San Jose.

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

    On average you can expect to pay $552 for a flight from Illinois to San Jose. The cheapest flight overall is $155 while the most popular route, (Chicago O'Hare Intl - San Jose) is currently priced at $150.

  • 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 $358). 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 June 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$90Average$248FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$127Average$249FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$273Average$501FlexibilityNo cancel feeOn-time71%
DeltaCheapest$277Average$450FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$288Average$493FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$376Average$482FlexibilityNo cancel feeOn-time63%

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