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San Jose

$106+ 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 5/31. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SJC
May 6 — May 131
Tue 5/6
Tue 5/13
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 May 1, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$242
(Flightnetwork)

One-way from

$106
(Mytrip)

Popular in

June

Cheapest in

October

Average price

$421

Good round-trip deal

$371 or less

Good one-way deal

$175 or less
Provider with most accurate pricing for Chicago (CHI)-San Jose flight deals.
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Provider most trusted by Cheapflights users for Chicago (CHI)-San Jose flights.
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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. 6% potential increase in price ($28 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 May 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 May 1, 2025.

This Flightnetwork deal was found by Cheapflights users on 4/29. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/1510:00 amORD - SJC
2 stops15h 29mSpirit Airlines
Tue 5/274:28 pmSJC - ORD
1 stop10h 57mSpirit Airlines
Deal found 4/29$242
This Expedia deal was found by Cheapflights users on 4/29. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/2811:50 amORD - SJC
1 stop13h 39mMultiple Airlines
Sat 5/316:00 pmSJC - ORD
1 stop9h 40mMultiple Airlines
Deal found 4/29$245
This Delta deal was found by Cheapflights users on 4/30. 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.
Wed 6/113:42 pmSTL - SJC
1 stop9h 13mDelta
Thu 6/194:59 pmSJC - STL
1 stop5h 44mDelta
Deal found 4/30$257
This Frontier deal was found by Cheapflights users on 4/29. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/66:25 amMDW - SJC
1 stop9h 15mFrontier
Sun 6/812:13 pmSJC - MDW
1 stop6h 40mFrontier
Deal found 4/29$258
This Frontier deal was found by Cheapflights users on 4/29. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/56:00 amORD - SJC
1 stop7h 18mFrontier
Sun 6/812:13 pmSJC - ORD
1 stop9h 46mFrontier
Deal found 4/29$258
This American Airlines deal was found by Cheapflights users on 4/30. 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 5/313:58 pmSTL - SJC
1 stop7h 46mAmerican Airlines
Wed 6/412:48 pmSJC - STL
2 stops9h 03mAmerican Airlines
Deal found 4/30$262
This Alaska Airlines deal was found by Cheapflights users on 4/29. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/48:00 amORD - SJC
1 stop8h 51mAlaska Airlines
Tue 6/1012:25 pmSJC - ORD
1 stop7h 58mAlaska Airlines
Deal found 4/29$296
This Delta deal was found by Cheapflights users on 4/29. 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.
Tue 6/101:47 pmMDW - SJC
1 stop8h 46mDelta
Tue 6/1710:25 pmSJC - MDW
1 stop9h 16mDelta
Deal found 4/29$299
This Mytrip deal was found by Cheapflights users on 4/30. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/233:30 pmSTL - SJC
2 stops33h 59mMultiple Airlines
Wed 5/284:28 pmSJC - STL
2 stops14h 47mMultiple Airlines
Deal found 4/30$303
This CheapOair deal was found by Cheapflights users on 4/30. 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.
Thu 5/19:55 pmSTL - SJC
1 stop22h 46mFrontier
Sun 5/412:20 pmSJC - STL
1 stop18h 49mFrontier
Deal found 4/30$310
This United Airlines deal was found by Cheapflights users on 4/29. 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.
Tue 5/277:59 pmORD - SJC
Nonstop4h 40mUnited Airlines
Tue 6/36:35 amSJC - ORD
Nonstop4h 22mUnited Airlines
Deal found 4/29$311
This Delta deal was found by Cheapflights users on 4/29. 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.
Tue 6/37:15 amORD - SJC
1 stop8h 30mDelta
Wed 6/117:18 amSJC - ORD
1 stop8h 02mDelta
Deal found 4/29$315

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 May 1, 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

Thu 5/15

10:00 am-11:29 pm

2 stops15h 29m

San Jose

Tue 5/27

4:28 pm-5:25 am

1 stop10h 57m

$242

ChicagoSan Jose

ORD - SJC

ORDSJC

Chicago O'Hare Intl

Wed 5/28

11:50 am-11:29 pm

1 stop13h 39m

San Jose

Sat 5/31

6:00 pm-5:40 am

1 stop9h 40m

$245

St. LouisSan Jose

STL - SJC

STLSJC

Lambert-St Louis

Wed 6/11

3:42 pm-10:55 pm

1 stop9h 13m

San Jose

Thu 6/19

4:59 pm-12:43 am

1 stop5h 44m

$257

ChicagoSan Jose

MDW - SJC

MDWSJC

Chicago Midway

Fri 6/6

6:25 am-1:40 pm

1 stop9h 15m

San Jose

Sun 6/8

12:13 pm-8:53 pm

1 stop6h 40m

$258

ChicagoSan Jose

ORD - SJC

ORDSJC

Chicago O'Hare Intl

Thu 6/5

6:00 am-11:18 am

1 stop7h 18m

San Jose

Sun 6/8

12:13 pm-11:59 pm

1 stop9h 46m

$258

St. LouisSan Jose

STL - SJC

STLSJC

Lambert-St Louis

Sat 5/31

3:58 pm-9:44 pm

1 stop7h 46m

San Jose

Wed 6/4

12:48 pm-11:51 pm

2 stops9h 03m

$262

ChicagoSan Jose

ORD - SJC

ORDSJC

Chicago O'Hare Intl

Wed 6/4

8:00 am-6:59 pm

1 stop12h 59m

San Jose

Tue 6/10

2:53 pm-11:56 pm

1 stop7h 03m

$296

ChicagoSan Jose

MDW - SJC

MDWSJC

Chicago Midway

Tue 6/10

1:47 pm-8:33 pm

1 stop8h 46m

San Jose

Tue 6/17

10:25 pm-9:41 am

1 stop9h 16m

$299

St. LouisSan Jose

STL - SJC

STLSJC

Lambert-St Louis

Fri 5/23

3:30 pm-11:29 pm

2 stops33h 59m

San Jose

Wed 5/28

4:28 pm-9:15 am

2 stops14h 47m

$303

ChicagoSan Jose

ORD - SJC

ORDSJC

Chicago O'Hare Intl

Tue 5/27

7:59 pm-10:39 pm

Nonstop4h 40m

San Jose

Tue 6/3

6:35 am-12:57 pm

Nonstop4h 22m

$311

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/30

Showing 1-10 of 56 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 $357). 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 May 1, 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.

Rainfall in San Jose by month

Plan your trip to San Jose by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in San Jose ranges from 0.0 - 3.1 inches per month. January is typically the wettest month, when rainfall can reach 3.1 in. July is typically the driest time to visit San Jose when rainfall is around 0.0 in.

Temperature in San Jose by month

Plan your trip to San Jose by taking into account the average temperature totals by month.

If weather is an important factor for your trip to San Jose, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 69.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 50.0 F).

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 May 1, 2025.
Read reviews from past customers who have flown Alaska Airlines, Southwest and Delta from Illinois to San Jose. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,972 reviews

Food

7.1

Comfort

7.9

Crew

8.5

Entertainment

7.1

Overall

8.0

Boarding

8.1

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
9,972 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Food

7.1

Comfort

7.9

Crew

8.5

Entertainment

7.1

Overall

8.0

Boarding

8.1

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
4,294 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Food

7.1

Comfort

7.9

Crew

8.5

Entertainment

7.1

Overall

8.0

Boarding

8.1

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
7,934 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Food

7.1

Comfort

7.9

Crew

8.5

Entertainment

7.1

Overall

8.0

Boarding

8.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.9
Good
2,409 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Food

7.1

Comfort

7.9

Crew

8.5

Entertainment

7.1

Overall

8.0

Boarding

8.1

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
8,696 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Food

7.1

Comfort

7.9

Crew

8.5

Entertainment

7.1

Overall

8.0

Boarding

8.1

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 $106. However, be on the lookout for offers from Delta and American Airlines, 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 $364 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 $112.

  • 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 $357). 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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Alternative routes for Illinois to San Jose

See prices for flight routes from nearby airports that may be better suited for you.
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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 May 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$90Average$248FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$133Average$242FlexibilityNo cancel feeOn-time65%
Alaska AirlinesCheapest$140Average$314FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$273Average$506FlexibilityNo cancel feeOn-time71%
DeltaCheapest$274Average$382FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$296Average$518FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$353Average$473FlexibilityNo cancel feeOn-time63%

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