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$63+ Cheap flights from San Jose (SJC) to Illinois

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 1/23. Fares are subject to change and may not be available on all flights or dates of travel.
SJC — ORD
Jan 9 — Jan 161
Thu 1/9
Thu 1/16
1 adult, Economy
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Cheap flight deals from San Jose to Illinois

Discover tips and strategies to find the most affordable flight options for your journey from San Jose (SJC) to Illinois (USIL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 4, 2025.

Round-trip from

$137
(Mytrip)

One-way from

$63
(Mytrip)
From San Jose to Illinois
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One-way flight from San Jose to Illinois
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Find flight deals from San Jose to Illinois

Cheapest flights from San Jose to Illinois
Explore the most affordable flight options available from San Jose to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 4, 2025.

This Mytrip deal was found by Cheapflights users on 1/3. 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.
Thu 2/61:11 pmSJC - STL
1 stop18h 05mFrontier
Sun 2/98:31 pmSTL - SJC
1 stop21h 58mFrontier
Deal found 1/3$137
This Booking.com deal was found by Cheapflights users on 1/3. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/309:34 pmSJC - ORD
1 stop5h 57mSpirit Airlines
Tue 2/41:39 pmORD - SJC
1 stop7h 28mSpirit Airlines
Deal found 1/3$176
This Booking.com deal was found by Cheapflights users on 1/3. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/229:34 pmSJC - ORD
1 stop5h 57mMultiple Airlines
Thu 1/236:36 pmORD - SJC
1 stop23h 53mMultiple Airlines
Deal found 1/3$180
This Trip.com deal was found by Cheapflights users on 1/3. 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.
Sat 1/185:19 pmSJC - MDW
1 stop16h 25mFrontier
Wed 1/228:15 amMDW - SJC
2 stops25h 29mFrontier
Deal found 1/3$181
This Frontier deal was found by Cheapflights users on 1/3. 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 1/101:11 pmSJC - ORD
1 stop9h 24mFrontier
Sun 1/127:25 amORD - SJC
1 stop6h 43mFrontier
Deal found 1/3$206
This Alaska Airlines deal was found by Cheapflights users on 1/3. 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.
Thu 2/67:15 pmSJC - STL
1 stop16h 38mAlaska Airlines
Sun 2/97:00 amSTL - SJC
1 stop9h 20mAlaska Airlines
Deal found 1/3$246
This American Airlines deal was found by Cheapflights users on 1/3. 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 2/86:10 amSJC - STL
1 stop8h 13mAmerican Airlines
Wed 2/125:03 amSTL - SJC
1 stop8h 09mAmerican Airlines
Deal found 1/3$247
This Delta deal was found by Cheapflights users on 1/3. 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 1/301:20 pmSJC - STL
1 stop8h 17mDelta
Sun 2/25:00 pmSTL - SJC
1 stop8h 52mDelta
Deal found 1/3$298
This Alaska Airlines deal was found by Cheapflights users on 1/3. 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 1/298:10 amSJC - ORD
1 stop7h 49mAlaska Airlines
Fri 1/312:07 pmORD - SJC
1 stop11h 37mAlaska Airlines
Deal found 1/3$300
This Delta deal was found by Cheapflights users on 1/3. 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 2/1512:20 pmSJC - ORD
1 stop9h 36mDelta
Tue 2/181:40 pmORD - SJC
2 stops11h 01mDelta
Deal found 1/3$310
This Delta deal was found by Cheapflights users on 1/3. 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 2/266:40 amSJC - MDW
2 stops9h 31mDelta
Wed 3/56:00 amMDW - SJC
1 stop8h 08mDelta
Deal found 1/3$324
This Delta deal was found by Cheapflights users on 1/3. 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 1/186:40 amSJC - MLI
1 stop7h 45mDelta
Wed 1/225:47 amMLI - SJC
1 stop8h 23mDelta
Deal found 1/3$339

Find flights from San Jose to Illinois within your budget

Customize your flight search to find flights from San Jose to Illinois 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 January 4, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

San JoseSt. Louis

SJC - STL

SJCSTL

San Jose

Thu 2/6

1:11 pm-9:16 am

1 stop18h 05m

Lambert-St Louis

Sun 2/9

8:31 pm-4:29 pm

1 stop21h 58m

$137

San JoseChicago

SJC - ORD

SJCORD

San Jose

Thu 1/30

9:34 pm-5:31 am

1 stop5h 57m

Chicago O'Hare Intl

Tue 2/4

1:39 pm-7:07 pm

1 stop7h 28m

$176

San JoseChicago

SJC - ORD

SJCORD

San Jose

Wed 1/22

9:34 pm-5:31 am

1 stop5h 57m

Chicago O'Hare Intl

Thu 1/23

6:36 pm-4:29 pm

1 stop23h 53m

$180

San JoseChicago

SJC - MDW

SJCMDW

San Jose

Sat 1/18

5:19 pm-11:44 am

1 stop16h 25m

Chicago Midway

Wed 1/22

8:15 am-7:44 am

2 stops25h 29m

$181

San JoseChicago

SJC - ORD

SJCORD

San Jose

Mon 3/31

4:03 pm-12:44 am

1 stop6h 41m

Chicago O'Hare Intl

Sat 4/5

6:45 am-1:50 pm

1 stop9h 05m

$228

San JoseSt. Louis

SJC - STL

SJCSTL

San Jose

Thu 2/6

7:15 pm-1:53 pm

1 stop16h 38m

Lambert-St Louis

Sun 2/9

7:00 am-2:20 pm

1 stop9h 20m

$246

San JoseSt. Louis

SJC - STL

SJCSTL

San Jose

Sat 2/8

6:10 am-4:23 pm

1 stop8h 13m

Lambert-St Louis

Wed 2/12

5:03 am-11:12 am

1 stop8h 09m

$247

San JoseSt. Louis

SJC - STL

SJCSTL

San Jose

Thu 1/30

1:20 pm-11:37 pm

1 stop8h 17m

Lambert-St Louis

Sun 2/2

5:00 pm-11:52 pm

1 stop8h 52m

$298

San JoseChicago

SJC - ORD

SJCORD

San Jose

Wed 1/29

8:10 am-5:59 pm

1 stop7h 49m

Chicago O'Hare Intl

Fri 1/31

2:07 pm-11:44 pm

1 stop11h 37m

$300

San JoseChicago

SJC - ORD

SJCORD

San Jose

Wed 4/16

2:35 pm-11:53 pm

1 stop7h 18m

Chicago O'Hare Intl

Tue 4/22

6:20 am-1:57 pm

1 stop9h 37m

$315

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/2

Showing 1-10 of 51 results
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Best time to book a flight from San Jose to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from San Jose 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 San Jose to Illinois

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

What is the cheapest month to book a flight from San Jose to Illinois?

Currently, August is the cheapest month in which you can book a flight from San Jose to Illinois (average of $245). Flying from San Jose to Illinois in March is currently the most expensive (average of $318). 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 SJC to IL?

Find hourly flight availability from San Jose to Illinois. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated January 4, 2025.

When flying from San Jose to Illinois, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Illinois by month

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

In terms of precipitation, rainfall in Illinois ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Illinois when rainfall is around 1.7 in.

Temperature in Illinois by month

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

If weather is an important factor for your trip to Illinois, 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 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

Reviews of airlines servicing Illinois

Get insights into the airlines that provide service to Illinois. 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 Illinois. Reviews last updated January 4, 2025.
Read through reviews of airlines operating flights from San Jose to Illinois, such as Spirit Airlines, United Airlines and Frontier. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,679 reviews

Comfort

8.1

Entertainment

7.7

Overall

8.1

Food

7.2

Boarding

8.2

Crew

8.7

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Southwest
8.1
Very good
4,679 reviews
Southwest
8.1
Very good
4,679 reviews

Comfort

8.1

Entertainment

7.7

Overall

8.1

Food

7.2

Boarding

8.2

Crew

8.7

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Alaska Airlines
8.0
Very good
9,606 reviews
Southwest
8.1
Very good
4,679 reviews

Comfort

8.1

Entertainment

7.7

Overall

8.1

Food

7.2

Boarding

8.2

Crew

8.7

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Delta
8.0
Very good
8,526 reviews
Southwest
8.1
Very good
4,679 reviews

Comfort

8.1

Entertainment

7.7

Overall

8.1

Food

7.2

Boarding

8.2

Crew

8.7

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

United Airlines
7.4
Good
8,963 reviews
Southwest
8.1
Very good
4,679 reviews

Comfort

8.1

Entertainment

7.7

Overall

8.1

Food

7.2

Boarding

8.2

Crew

8.7

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
4,679 reviews

Comfort

8.1

Entertainment

7.7

Overall

8.1

Food

7.2

Boarding

8.2

Crew

8.7

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Related info for your journey

Find useful and relevant information for your journey from San Jose to Illinois. 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 from for flights from San Jose to Illinois?

    For a flight from San Jose to Illinois, you will be flying from San Jose. San Jose (SJC) is just 2.9 mi from the center of the city.

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

    The cheapest airlines for a one-way flight from San Jose to Illinois are Frontier ($63), Spirit Airlines ($78), and Alaska Airlines ($123).

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

    The most popular route from San Jose to Illinois is San Jose - Chicago O'Hare Intl. You may also consider San Jose - Chicago Midway or San Jose - Lambert-St Louis.

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

    While on average a flight from San Jose to Illinois is generally $881, our data shows the cheapest flight currently is $155. When looking at the most popular route, (San Jose - Chicago O'Hare Intl), you can expect to pay $142 for that flight.

  • Can I find deals for flights from San Jose to Illinois that include hotel bookings?

    Yes. In addition to deals on San Jose to Illinois flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from San Jose to Illinois?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Jose to Illinois.

  • Can I find deals for business class flights from San Jose to Illinois?

    Yes. Cheapflights offers flight deals from San Jose to Illinois 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 San Jose to Illinois?

    Currently, August is the cheapest month in which you can book a flight from San Jose to Illinois (average of $245). Flying from San Jose to Illinois in March is currently the most expensive (average of $318). 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.

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Alternative routes for San Jose to Illinois

See prices for flight routes from nearby airports that may be better suited for you.
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Top 7 airlines flying from San Jose to Illinois

Discover the top 7 airlines that operate flights from San Jose to Illinois. 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 January 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$100Average$276FlexibilityNo cancel feeOn-time75%
FrontierCheapest$106Average$241FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$134Average$265FlexibilityNo cancel feeOn-time65%
United AirlinesCheapest$203Average$484FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$234Average$532FlexibilityNo cancel feeOn-time71%
DeltaCheapest$236Average$497FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$367Average$540FlexibilityNo cancel feeOn-time63%
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