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 American Airlines ($109), Hawaiian Airlines ($113), and Spirit 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 $908, our data shows the cheapest flight currently is $176. When looking at the most popular route, (San Jose - Chicago O'Hare Intl), you can expect to pay $149 for that flight.

What are the most popular airlines that fly from San Jose to Illinois?

When booking a flight from San Jose to Illinois, you may want to consider flying on American Airlines, Alaska Airlines or Delta as they are the most popular for this route.

How far in advance should I book a flight from San Jose to Illinois?

Find a great deal and save up to 43% by booking at least 60 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from San Jose to Illinois within the next two weeks, with the cheapest ticket starting at $215.

What is the cheapest month to fly from San Jose to Illinois?

January can be a great time to fly to Illinois from San Jose with a flight ticket averaging about $409. Cheapflights users have found deals in the month of January for as cheap as $148. The most expensive prices can be found in the month of March.

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.

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.

$109+ Flights from San Jose to Illinois

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Cheap flight deals from San Jose to Illinois

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$217 (American Airlines)
One-way from	$109 (American Airlines)
Popular in	March
Cheapest in	January
Average price	$482
Good round-trip deal	$402 or less
Good one-way deal	$173 or less

Provider with most accurate pricing for San Jose-Chicago (CHI) flight deals.

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Provider most trusted by Cheapflights users for San Jose-Chicago (CHI) flights.

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From San Jose to Illinois

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One-way flight from San Jose to Illinois

Search Deals

Highest demand for flights based on searches. 6% potential increase in price ($29 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in March 2025

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Price to beat on a round-trip flight from San Jose to Illinois.

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Price to beat on a 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 March 26, 2025.

Sat 4/196:10 amSJC - STL

1 stop7h 03mAmerican Airlines

Sat 4/265:26 amSTL - SJC

1 stop7h 58mAmerican Airlines

Deal found 3/25

$217

Sun 4/202:50 pmSJC - ORD

2 stops31h 41mSpirit Airlines

Wed 4/233:32 pmORD - SJC

2 stops17h 57mSpirit Airlines

Deal found 3/25

$230

Wed 4/97:54 pmSJC - ORD

1 stop8h 39mMultiple Airlines

Wed 4/166:40 amORD - SJC

1 stop10h 19mMultiple Airlines

Deal found 3/25

$247

Wed 10/291:00 pmSJC - STL

1 stop8h 56mHawaiian Airlines

Tue 11/47:00 amSTL - SJC

1 stop9h 10mHawaiian Airlines

Deal found 3/25

$256

Sat 4/265:45 amSJC - STL

1 stop5h 43mDelta

Sat 5/35:00 pmSTL - SJC

1 stop7h 11mDelta

Deal found 3/24

$257

Tue 4/152:04 pmSJC - MDW

1 stop13h 19mMultiple Airlines

Fri 4/188:50 pmMDW - SJC

1 stop16h 23mMultiple Airlines

Deal found 3/25

$271

Mon 4/78:12 pmSJC - MDW

1 stop7h 11mFrontier

Fri 4/186:45 amMDW - SJC

1 stop10h 14mFrontier

Deal found 3/24

$278

Wed 4/164:03 pmSJC - ORD

1 stop6h 34mFrontier

Sat 4/196:45 amORD - SJC

1 stop9h 05mFrontier

Deal found 3/25

$278

Sat 4/52:40 pmSJC - STL

1 stop18h 57mFrontier

Mon 4/76:38 pmSTL - SJC

1 stop26h 00mFrontier

Deal found 3/24

$280

Sat 4/126:10 amSJC - MLI

1 stop6h 41mAmerican Airlines

Sat 4/193:24 pmMLI - SJC

2 stops9h 23mAmerican Airlines

Deal found 3/25

$289

Tue 4/298:24 amSJC - ORD

1 stop19h 41mAlaska Airlines

Wed 5/79:00 amORD - SJC

1 stop9h 58mAlaska Airlines

Deal found 3/24

$294

Tue 4/1511:45 amSJC - ORD

1 stop10h 14mDelta

Tue 4/227:50 amORD - SJC

1 stop8h 10mDelta

Deal found 3/24

$295

Best flights from San Jose to Illinois
Discover carefully curated flight deals from San Jose to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 26, 2025.

Sat 4/196:10 amSJC - STL

1 stop7h 03mAmerican Airlines

Sat 4/265:26 amSTL - SJC

1 stop7h 58mAmerican Airlines

Deal found 3/25

$217

Sun 4/202:50 pmSJC - ORD

2 stops31h 41mSpirit Airlines

Wed 4/233:32 pmORD - SJC

2 stops17h 57mSpirit Airlines

Deal found 3/25

$230

Wed 4/97:54 pmSJC - ORD

1 stop8h 39mMultiple Airlines

Wed 4/166:40 amORD - SJC

1 stop10h 19mMultiple Airlines

Deal found 3/25

$247

Sat 4/265:45 amSJC - STL

1 stop5h 43mDelta

Sat 5/35:00 pmSTL - SJC

1 stop7h 11mDelta

Deal found 3/24

$257

Mon 4/78:12 pmSJC - MDW

1 stop7h 11mFrontier

Fri 4/186:45 amMDW - SJC

1 stop10h 14mFrontier

Deal found 3/24

$278

Tue 4/298:24 amSJC - ORD

1 stop7h 37mAlaska Airlines

Tue 5/66:00 amORD - SJC

1 stop8h 01mAlaska Airlines

Deal found 3/24

$294

Tue 4/296:35 amSJC - STL

1 stop7h 12mUnited Airlines

Sun 5/45:20 amSTL - SJC

1 stop6h 42mUnited Airlines

Deal found 3/24

$307

Fri 5/93:05 pmSJC - STL

1 stop7h 00mSouthwest

Mon 5/126:40 pmSTL - SJC

1 stop6h 15mSouthwest

Deal found 3/25

$333

Tue 4/152:04 pmSJC - MDW

1 stop13h 19mMultiple Airlines

Fri 4/188:50 pmMDW - SJC

1 stop16h 23mMultiple Airlines

Deal found 3/25

$271

Wed 4/164:03 pmSJC - ORD

1 stop6h 34mFrontier

Sat 4/196:45 amORD - SJC

1 stop9h 05mFrontier

Deal found 3/25

$278

Sat 4/126:10 amSJC - MLI

1 stop6h 41mAmerican Airlines

Sat 4/193:24 pmMLI - SJC

2 stops9h 23mAmerican Airlines

Deal found 3/25

$289

Tue 4/1511:45 amSJC - ORD

1 stop10h 14mDelta

Tue 4/227:50 amORD - SJC

1 stop8h 10mDelta

Deal found 3/24

$295

Last-minute flights from San Jose to Illinois
Discover last-minute flight deals from San Jose to Illinois. Data last updated March 26, 2025 and is based on user searches.

Tue 4/18:50 pmSJC - ORD

1 stop7h 52mSpirit Airlines

Tue 4/89:57 pmORD - SJC

1 stop14h 15mSpirit Airlines

Deal found 3/25

$257

Tue 4/110:48 amSJC - ORD

2 stops18h 16mMultiple Airlines

Sat 4/57:46 pmORD - SJC

1 stop26h 23mMultiple Airlines

Deal found 3/25

$507

Tue 4/18:35 amSJC - MDW

Nonstop4h 10mSouthwest

Sat 4/57:20 pmMDW - SJC

Nonstop4h 40mSouthwest

Deal found 3/25

$823

Thu 4/38:08 pmSJC - STL

2 stops13h 26mMultiple Airlines

Sun 4/66:35 amSTL - SJC

2 stops32h 01mMultiple Airlines

Deal found 3/25

$429

Thu 4/34:15 pmSJC - STL

1 stop6h 05mSouthwest

Sun 4/61:00 pmSTL - SJC

Nonstop4h 20mSouthwest

Deal found 3/25

$532

Fri 4/43:49 pmSJC - ORD

1 stop6h 48mFrontier

Wed 4/96:40 amORD - SJC

1 stop10h 19mFrontier

Deal found 3/24

$288

Fri 4/48:30 amSJC - STL

2 stops12h 45mUnited Airlines

Sun 4/68:48 amSTL - SJC

1 stop6h 47mUnited Airlines

Deal found 3/26

$512

Fri 4/46:15 amSJC - ORD

2 stops15h 44mAlaska Airlines

Tue 4/810:00 amORD - SJC

1 stop11h 55mAlaska Airlines

Deal found 3/24

$597

Fri 4/48:30 amSJC - ORD

1 stop12h 32mUnited Airlines

Tue 4/87:50 pmORD - SJC

Nonstop5h 01mUnited Airlines

Deal found 3/24

$703

Fri 4/47:39 pmSJC - MDW

2 stops11h 04mDelta

Tue 4/81:15 pmMDW - SJC

1 stop9h 08mDelta

Deal found 3/24

$756

Sat 4/52:40 pmSJC - MDW

1 stop7h 41mFrontier

Wed 4/96:45 amMDW - SJC

1 stop10h 14mFrontier

Deal found 3/25

$278

Sat 4/52:40 pmSJC - STL

1 stop18h 57mFrontier

Mon 4/76:38 pmSTL - SJC

1 stop26h 00mFrontier

Deal found 3/24

$280

One-way flights from San Jose to Illinois
Search for one-way flight options from San Jose to Illinois. Find affordable one-way fares based on user searches. Data last updated March 26, 2025.

Sat 4/266:00 amSJC - STL

1 stop5h 42mAmerican Airlines

Deal found 3/25

$109

Sun 5/251:31 pmSJC - STL

1 stop8h 33mHawaiian Airlines

Deal found 3/25

$113

Sun 5/46:35 pmSJC - ORD

3 stops33h 10mSpirit Airlines

Deal found 3/25

$123

Mon 5/126:35 amSJC - STL

1 stop6h 00mSouthwest

Deal found 3/25

$124

Wed 5/74:28 pmSJC - STL

2 stops14h 47mSpirit Airlines

Deal found 3/25

$126

Mon 5/1912:20 pmSJC - ORD

1 stop9h 21mFrontier

Deal found 3/25

$126

Fri 4/186:15 amSJC - STL

1 stop9h 41mDelta

Deal found 3/25

$129

Sat 4/122:40 pmSJC - MDW

1 stop7h 41mFrontier

Deal found 3/26

$139

Thu 4/108:59 pmSJC - STL

1 stop18h 44mFrontier

Deal found 3/26

$146

Tue 4/2910:14 amSJC - ORD

1 stop9h 45mAlaska Airlines

Deal found 3/25

$147

Wed 5/147:20 amSJC - ORD

1 stop8h 05mDelta

Deal found 3/24

$148

Tue 5/209:23 amSJC - STL

2 stops12h 41mAlaska Airlines

Deal found 3/25

$150

Cheapflights Fare Finder

Use the filters below to find and compare flights from San Jose to Illinois that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

San JoseSt. Louis

SJC - STL

SJCSTL

San Jose

Sat 4/19

6:10 am-3:13 pm

1 stop7h 03m

Lambert-St Louis

Sat 4/26

5:26 am-11:24 am

1 stop7h 58m

$217

San JoseChicago

SJC - ORD

SJCORD

San Jose

Sun 4/20

2:50 pm-12:31 am

2 stops31h 41m

Chicago O'Hare Intl

Wed 4/23

3:32 pm-7:29 am

2 stops17h 57m

$230

San JoseChicago

SJC - RFD

SJCRFD

San Jose

Wed 4/2

7:54 pm-8:51 pm

1 stop22h 57m

Chicago Greater Rockford

Sun 4/6

9:41 pm-6:59 pm

1 stop23h 18m

$244

San JoseChicago

SJC - ORD

SJCORD

San Jose

Wed 4/9

7:54 pm-6:33 am

1 stop8h 39m

Chicago O'Hare Intl

Wed 4/16

6:40 am-2:59 pm

1 stop10h 19m

$247

San JoseSt. Louis

SJC - STL

SJCSTL

San Jose

Sat 4/26

5:45 am-1:28 pm

1 stop5h 43m

Lambert-St Louis

Sat 5/3

5:00 pm-10:11 pm

1 stop7h 11m

$257

San JoseChicago

SJC - MDW

SJCMDW

San Jose

Tue 4/15

2:04 pm-5:23 am

1 stop13h 19m

Chicago Midway

Fri 4/18

8:50 pm-11:13 am

1 stop16h 23m

$271

San JoseChicago

SJC - MDW

SJCMDW

San Jose

Thu 4/10

8:59 pm-5:23 am

1 stop6h 24m

Chicago Midway

Sat 4/19

6:45 am-1:50 pm

1 stop9h 05m

$278

San JoseSt. Louis

SJC - STL

SJCSTL

San Jose

Sat 4/5

2:40 pm-11:37 am

1 stop18h 57m

Lambert-St Louis

Mon 4/7

6:38 pm-6:38 pm

1 stop26h 00m

$280

San JoseChicago

SJC - ORD

SJCORD

San Jose

Mon 4/7

8:12 pm-5:08 am

1 stop6h 56m

Chicago O'Hare Intl

Mon 4/14

8:01 pm-6:38 pm

1 stop24h 37m

$280

San JoseMoline

SJC - MLI

SJCMLI

San Jose

Sat 4/12

6:10 am-2:51 pm

1 stop6h 41m

Moline Quad-City

Sat 4/19

3:24 pm-10:47 pm

2 stops9h 23m

$289

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/25

Showing 1-10 of 56 results

...

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.

Cheapflights Insights

Everything you need to know about your flight from San Jose to Illinois

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 $323). 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?

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

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

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

Read through reviews of airlines operating flights from San Jose to Illinois, such as Southwest, Alaska Airlines and Delta. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Southwest

8.1

Very good

4,273 reviews

Reviews

1 / 20

10.0

Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

Southwest

8.1

Very good

4,273 reviews

Southwest

8.1

Very good

4,273 reviews

Reviews

1 / 20

10.0

Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

Alaska Airlines

8.0

Very good

9,789 reviews

Southwest

8.1

Very good

4,273 reviews

Reviews

1 / 20

10.0

Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

Delta

8.0

Very good

7,891 reviews

Southwest

8.1

Very good

4,273 reviews

Reviews

1 / 20

10.0

Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

Hawaiian Airlines

7.9

Good

2,331 reviews

Southwest

8.1

Very good

4,273 reviews

Reviews

1 / 20

10.0

Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

United Airlines

7.4

Good

8,608 reviews

Southwest

8.1

Very good

4,273 reviews

Reviews

1 / 20

10.0

Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

Related info for your journey

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 American Airlines ($109), Hawaiian Airlines ($113), and Spirit 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 $908, our data shows the cheapest flight currently is $176. When looking at the most popular route, (San Jose - Chicago O'Hare Intl), you can expect to pay $149 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 $323). 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

Browse thousands of different options on Cheapflights for your next trip

Top 7 airlines flying from San Jose to Illinois

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$98	Average$245	FlexibilityNo cancel fee	On-time62%
Spirit Airlines	Cheapest$134	Average$256	FlexibilityNo cancel fee	On-time65%
Alaska Airlines	Cheapest$197	Average$297	FlexibilityNo cancel fee	On-time75%
United Airlines	Cheapest$203	Average$476	FlexibilityNo cancel fee	On-time69%
American Airlines	Cheapest$234	Average$480	FlexibilityNo cancel fee	On-time71%
Delta	Cheapest$236	Average$496	FlexibilityNo cancel fee	On-timeN/A
Southwest	Cheapest$370	Average$506	FlexibilityNo cancel fee	On-time63%

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$109+ 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 4/26. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from San Jose to Illinois with Cheapflights

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2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from San Jose to Illinois

Keep the following information in mind while searching for San Jose to Illinois flight deals. Data was last updated March 26, 2025.

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find flight deals from San Jose to Illinois

Cheapest flights from San Jose to IllinoisExplore 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 March 26, 2025.

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 March 26, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from San Jose to Illinois that are best for you.

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.

Cheapflights Insights

Everything you need to know about your flight from San Jose to Illinois

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

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 March 26, 2025.

Rainfall in Illinois by month

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

Temperature in Illinois by month

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

Reviews of airlines servicing Illinois

Read through reviews of airlines operating flights from San Jose to Illinois, such as Southwest, Alaska Airlines and Delta. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

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?

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

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

What are the cheapest flights from San Jose to Illinois?

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

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

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

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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for San Jose to Illinois

See prices for flight routes from nearby airports that may be better suited for you.

Top 7 airlines flying from San Jose to Illinois

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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 March 26, 2025.