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$44+ 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 4/15. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SJC
feb. 25 — mar. 41
mar. 2/25
mar. 3/4
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 febrero 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$140
(CheapOair)

One-way from

$44
(FlightHub)

Popular in

March

Cheapest in

October

Average price

$434

Good round-trip deal

$443 or less

Good one-way deal

$200 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. 3% potential increase in price ($13 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in February 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 febrero 20, 2025.

This CheapOair deal was found by Cheapflights users on 2/18. 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.
mié. 3/56:50 amORD - SJC
1 stop10h 13mFrontier
jue. 3/131:00 pmSJC - ORD
1 stop14h 10mFrontier
Deal found 2/18$140
This CheapOair deal was found by Cheapflights users on 2/19. 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.
lun. 3/2410:27 pmORD - SJC
1 stop17h 07mSpirit Airlines
mar. 4/12:29 pmSJC - ORD
1 stop20h 24mSpirit Airlines
Deal found 2/19$144
This Frontier deal was found by Cheapflights users on 2/18. 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.
sáb. 3/156:40 amMDW - SJC
1 stop10h 23mFrontier
mié. 3/194:03 pmSJC - MDW
1 stop6h 14mFrontier
Deal found 2/18$150
This CheapOair deal was found by Cheapflights users on 2/19. 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.
jue. 4/2411:53 amORD - SJC
1 stop8h 44mMultiple Airlines
dom. 4/2712:34 pmSJC - ORD
1 stop9h 06mMultiple Airlines
Deal found 2/19$155
This American Airlines deal was found by Cheapflights users on 2/19. 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.
mié. 3/123:33 pmPIA - SJC
1 stop7h 52mAmerican Airlines
mar. 3/256:10 amSJC - PIA
1 stop6h 51mAmerican Airlines
Deal found 2/19$229
This Delta deal was found by Cheapflights users on 2/20. 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.
mié. 12/172:05 pmSTL - SJC
1 stop10h 39mDelta
lun. 1/510:51 pmSJC - STL
1 stop8h 08mDelta
Deal found 2/20$257
This Delta deal was found by Cheapflights users on 2/19. 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.
mar. 3/257:30 amORD - SJC
1 stop8h 24mDelta
mar. 4/12:34 pmSJC - ORD
1 stop7h 19mDelta
Deal found 2/19$263
This Gotogate deal was found by Cheapflights users on 2/20. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 3/76:55 pmSTL - SJC
1 stop26h 37mFrontier
mié. 3/125:34 pmSJC - STL
1 stop22h 11mFrontier
Deal found 2/20$283
This Delta deal was found by Cheapflights users on 2/20. 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.
mié. 4/29:25 amMDW - SJC
2 stops10h 20mDelta
mié. 4/97:39 pmSJC - MDW
2 stops11h 04mDelta
Deal found 2/20$303
This Southwest deal was found by Cheapflights users on 2/20. 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.
jue. 3/206:05 amSTL - SJC
2 stops7h 40mSouthwest
lun. 3/241:05 pmSJC - STL
1 stop7h 40mSouthwest
Deal found 2/20$322
This American Airlines deal was found by Cheapflights users on 2/19. 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.
mié. 9/104:17 pmSTL - SJC
2 stops8h 05mAmerican Airlines
dom. 9/146:00 amSJC - STL
1 stop6h 03mAmerican Airlines
Deal found 2/19$333
This United Airlines deal was found by Cheapflights users on 2/19. 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.
vie. 3/75:18 pmPIA - SJC
1 stop7h 32mUnited Airlines
mar. 3/116:20 amSJC - PIA
1 stop8h 22mUnited Airlines
Deal found 2/19$340

Find flights from Illinois to San Jose within your budget

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 febrero 20, 2025.

Fly from

Illinois

Fly to

San Jose

Route

Depart

Return

Price

ChicagoSan Jose

ORD - SJC

ORDSJC

Chicago O'Hare Intl

mié. 3/5

6:50 am-3:03 pm

1 stop10h 13m

San Jose

jue. 3/13

1:00 pm-5:10 am

1 stop14h 10m

$140

ChicagoSan Jose

ORD - SJC

ORDSJC

Chicago O'Hare Intl

lun. 3/24

10:27 pm-1:34 pm

1 stop17h 07m

San Jose

mar. 4/1

2:29 pm-12:53 pm

1 stop20h 24m

$144

ChicagoSan Jose

MDW - SJC

MDWSJC

Chicago Midway

sáb. 3/15

6:40 am-3:03 pm

1 stop10h 23m

San Jose

mié. 3/19

4:03 pm-12:17 am

1 stop6h 14m

$150

ChicagoSan Jose

ORD - SJC

ORDSJC

Chicago O'Hare Intl

jue. 4/24

11:53 am-6:37 pm

1 stop8h 44m

San Jose

dom. 4/27

12:34 pm-11:40 pm

1 stop9h 06m

$155

PeoriaSan Jose

PIA - SJC

PIASJC

Greater Peoria

mié. 3/12

3:33 pm-9:25 pm

1 stop7h 52m

San Jose

mar. 3/25

6:10 am-3:01 pm

1 stop6h 51m

$229

ChicagoSan Jose

ORD - SJC

ORDSJC

Chicago O'Hare Intl

mar. 3/25

7:30 am-1:54 pm

1 stop8h 24m

San Jose

mar. 4/1

2:34 pm-11:53 pm

1 stop7h 19m

$263

St. LouisSan Jose

STL - SJC

STLSJC

Lambert-St Louis

vie. 3/7

6:55 pm-7:32 pm

1 stop26h 37m

San Jose

mié. 3/12

5:34 pm-5:45 pm

1 stop22h 11m

$283

St. LouisSan Jose

STL - SJC

STLSJC

Lambert-St Louis

jue. 3/20

7:40 am-12:18 pm

1 stop6h 38m

San Jose

lun. 3/24

5:10 pm-12:32 am

1 stop5h 22m

$287

ChicagoSan Jose

MDW - SJC

MDWSJC

Chicago Midway

mié. 4/2

9:25 am-5:45 pm

2 stops10h 20m

San Jose

mié. 4/9

7:39 pm-8:43 am

2 stops11h 04m

$303

St. LouisSan Jose

STL - SJC

STLSJC

Lambert-St Louis

jue. 3/20

6:05 am-11:45 am

2 stops7h 40m

San Jose

lun. 3/24

1:05 pm-10:45 pm

1 stop7h 40m

$322

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/20

Showing 1-10 of 45 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.

Travel insights for flights from Illinois to San Jose

Get recent, data-driven insights about flights from Illinois to San Jose including ideal travel times, pricing trends, and more.

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 $371). 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 febrero 20, 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 febrero 20, 2025.
Read reviews from past customers who have flown Southwest, Alaska Airlines 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.
Southwest
8.1
Very good
4,411 reviews

Comfort

8.1

Entertainment

7.6

Food

7.1

Overall

8.1

Crew

8.7

Boarding

8.2

Reviews

1 / 20

2.0
Mediocre

Bhoopal,Nov 2024

STL - BOS

Flight was delayed by one hour and 40 minutes. Also baggage was delivered late at Boston. This delay made me miss my connection from Boston to Hyderabad

Southwest
8.1
Very good
4,411 reviews
Southwest
8.1
Very good
4,411 reviews

Comfort

8.1

Entertainment

7.6

Food

7.1

Overall

8.1

Crew

8.7

Boarding

8.2

Reviews

1 / 20

2.0
Mediocre

Bhoopal,Nov 2024

STL - BOS

Flight was delayed by one hour and 40 minutes. Also baggage was delivered late at Boston. This delay made me miss my connection from Boston to Hyderabad

Alaska Airlines
8.0
Very good
9,697 reviews
Southwest
8.1
Very good
4,411 reviews

Comfort

8.1

Entertainment

7.6

Food

7.1

Overall

8.1

Crew

8.7

Boarding

8.2

Reviews

1 / 20

2.0
Mediocre

Bhoopal,Nov 2024

STL - BOS

Flight was delayed by one hour and 40 minutes. Also baggage was delivered late at Boston. This delay made me miss my connection from Boston to Hyderabad

Delta
8.0
Very good
8,219 reviews
Southwest
8.1
Very good
4,411 reviews

Comfort

8.1

Entertainment

7.6

Food

7.1

Overall

8.1

Crew

8.7

Boarding

8.2

Reviews

1 / 20

2.0
Mediocre

Bhoopal,Nov 2024

STL - BOS

Flight was delayed by one hour and 40 minutes. Also baggage was delivered late at Boston. This delay made me miss my connection from Boston to Hyderabad

United Airlines
7.4
Good
8,765 reviews
Southwest
8.1
Very good
4,411 reviews

Comfort

8.1

Entertainment

7.6

Food

7.1

Overall

8.1

Crew

8.7

Boarding

8.2

Reviews

1 / 20

2.0
Mediocre

Bhoopal,Nov 2024

STL - BOS

Flight was delayed by one hour and 40 minutes. Also baggage was delivered late at Boston. This delay made me miss my connection from Boston to Hyderabad

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
4,411 reviews

Comfort

8.1

Entertainment

7.6

Food

7.1

Overall

8.1

Crew

8.7

Boarding

8.2

Reviews

1 / 20

2.0
Mediocre

Bhoopal,Nov 2024

STL - BOS

Flight was delayed by one hour and 40 minutes. Also baggage was delivered late at Boston. This delay made me miss my connection from Boston to Hyderabad

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 $44. However, be on the lookout for offers from Frontier and Alaska 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 $416 for a flight from Illinois to San Jose. The cheapest flight overall is $175 while the most popular route, (Chicago O'Hare Intl - San Jose) is currently priced at $113.

  • 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 $371). 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 febrero 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$90Average$215FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$139Average$246FlexibilityNo cancel feeOn-time65%
Alaska AirlinesCheapest$140Average$376FlexibilityNo cancel feeOn-time75%
DeltaCheapest$237Average$361FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$288Average$543FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$307Average$528FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$376Average$487FlexibilityNo cancel feeOn-time63%
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