How long is the flight from San Jose, California to Illinois?

Departing from San Jose, California to Illinois will take you 5h 25m. There are 1710 mi between San Jose, California and Illinois. Both multi-stop and nonstop flights can be found to your destination and back.

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

For one-way options, check prices for Frontier. According to our data, you can fly for as low as $43. Users have also found prices from $57 and $89 on Spirit Airlines and American Airlines, respectively.

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.

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).

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

The most popular route from San Jose, California 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, California to Illinois?

While on average a flight from San Jose, California to Illinois is generally $397, our data shows the cheapest flight currently is $148. When looking at the most popular route, (San Jose - Chicago O'Hare Intl), you can expect to pay $141 for that flight.

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

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

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.

$61+ Flights from San Jose, CA to Illinois

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Cheap 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 diciembre 4, 2025.

jue. 12/182:53 pmSJC - ORD

1 stop7h 06mAlaska Airlines

mar. 1/68:39 amORD - SJC

1 stop7h 37mAlaska Airlines

Deal found 12/3

$356

mié. 12/246:20 amSJC - MDW

1 stop8h 59mDelta

sáb. 1/176:45 amMDW - SJC

1 stop8h 11mDelta

Deal found 12/2

$368

mié. 12/2412:31 pmSJC - ORD

1 stop9h 31mDelta

dom. 1/185:20 pmORD - SJC

1 stop6h 20mDelta

Deal found 12/2

$368

jue. 12/257:43 pmSJC - ORD

1 stop8h 22mMultiple Airlines

mar. 12/307:01 pmORD - SJC

2 stops45h 31mMultiple Airlines

Deal found 12/2

$369

mié. 12/312:55 pmSJC - STL

1 stop5h 25mSouthwest

lun. 1/55:15 pmSTL - SJC

1 stop7h 35mSouthwest

Deal found 12/3

$371

mié. 12/2412:31 pmSJC - MDW

1 stop7h 51mDelta

mié. 1/149:32 amMDW - SJC

2 stops13h 48mDelta

Deal found 12/2

$373

jue. 12/255:40 pmSJC - MDW

2 stops13h 09mDelta

lun. 1/191:26 pmMDW - SJC

2 stops10h 46mDelta

Deal found 12/2

$378

jue. 12/1811:40 amSJC - ORD

1 stop10h 19mDelta

mar. 1/67:30 amORD - SJC

2 stops13h 42mDelta

Deal found 12/1

$378

mié. 12/178:30 pmSJC - MDW

1 stop6h 35mSouthwest

mié. 1/712:15 pmMDW - SJC

1 stop9h 20mSouthwest

Deal found 12/2

$379

mié. 12/177:00 amSJC - ORD

2 stops12h 21mDelta

mié. 1/72:20 pmORD - SJC

2 stops10h 35mDelta

Deal found 12/2

$383

mié. 12/319:35 amSJC - ORD

2 stops12h 24mAlaska Airlines

lun. 1/58:58 pmORD - SJC

1 stop16h 13mAlaska Airlines

Deal found 12/3

$388

lun. 12/2911:35 amSJC - ORD

2 stops9h 00mSouthwest

mar. 1/131:00 pmORD - SJC

2 stops8h 30mSouthwest

Deal found 12/3

$391

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 diciembre 4, 2025.

mié. 1/142:32 pmSJC - STL

1 stop6h 23mAmerican Airlines

mié. 1/219:25 amSTL - SJC

2 stops11h 09mAmerican Airlines

Deal found 12/2

$210

mié. 1/286:30 amSJC - STL

1 stop5h 25mSouthwest

jue. 1/292:20 pmSTL - SJC

1 stop7h 15mSouthwest

Deal found 12/4

$235

mié. 3/411:45 amSJC - STL

2 stops10h 40mDelta

mar. 3/106:32 amSTL - SJC

2 stops12h 57mDelta

Deal found 12/3

$254

dom. 1/1811:14 amSJC - STL

1 stop8h 00mFrontier

jue. 1/2210:01 pmSTL - SJC

1 stop12h 39mFrontier

Deal found 12/1

$288

vie. 2/2010:16 amSJC - STL

1 stop25h 35mAlaska Airlines

dom. 2/223:19 pmSTL - SJC

2 stops21h 35mAlaska Airlines

Deal found 12/2

$366

vie. 12/2610:30 pmSJC - ORD

Nonstop4h 21mUnited Airlines

sáb. 1/172:15 pmORD - SJC

1 stop8h 41mUnited Airlines

Deal found 12/2

$422

jue. 2/58:55 amSJC - STL

2 stops6h 55mSouthwest

mar. 2/102:20 pmSTL - SJC

2 stops9h 35mSouthwest

Deal found 12/3

$282

vie. 1/96:00 amSJC - STL

1 stop5h 53mAmerican Airlines

dom. 1/113:37 pmSTL - SJC

2 stops9h 12mAmerican Airlines

Deal found 12/2

$349

dom. 1/181:40 pmSJC - STL

1 stop5h 58mDelta

jue. 1/226:40 amSTL - SJC

2 stops14h 32mDelta

Deal found 12/1

$354

vie. 2/610:45 pmSJC - MDW

2 stops12h 01mDelta

dom. 2/86:00 amMDW - SJC

2 stops12h 20mDelta

Deal found 12/2

$358

mar. 3/242:00 pmSJC - STL

1 stop7h 55mAlaska Airlines

vie. 3/272:55 pmSTL - SJC

1 stop27h 50mAlaska Airlines

Deal found 12/2

$394

dom. 2/2212:25 pmSJC - MDW

Nonstop4h 05mSouthwest

sáb. 2/288:10 amMDW - SJC

1 stop7h 35mSouthwest

Deal found 12/3

$363

mar. 1/2711:51 amSJC - MLI

1 stop8h 07mAmerican Airlines

sáb. 1/313:58 pmMLI - SJC

1 stop7h 31mAmerican Airlines

Deal found 12/1

$379

sáb. 1/174:00 pmSJC - PIA

1 stop26h 47mUnited Airlines

mié. 1/218:35 amPIA - SJC

1 stop7h 04mUnited Airlines

Deal found 12/3

$431

vie. 1/169:15 amSJC - ORD

2 stops9h 50mDelta

lun. 1/198:50 amORD - SJC

2 stops9h 30mDelta

Deal found 12/1

$358

jue. 1/17:05 amSJC - ORD

1 stop19h 57mAlaska Airlines

dom. 1/48:58 pmORD - SJC

1 stop19h 18mAlaska Airlines

Deal found 12/4

$407

vie. 2/66:30 amSJC - MDW

Nonstop4h 10mSouthwest

dom. 2/812:15 pmMDW - SJC

1 stop9h 20mSouthwest

Deal found 12/2

$379

mié. 1/74:00 pmSJC - MLI

1 stop26h 34mUnited Airlines

sáb. 1/108:46 amMLI - SJC

1 stop6h 52mUnited Airlines

Deal found 12/3

$431

mar. 1/277:00 amSJC - MLI

2 stops13h 33mDelta

sáb. 1/315:51 amMLI - SJC

1 stop9h 05mDelta

Deal found 12/1

$359

mar. 1/2711:51 amSJC - PIA

1 stop7h 52mAmerican Airlines

sáb. 1/317:39 amPIA - SJC

2 stops12h 55mAmerican Airlines

Deal found 12/1

$419

vie. 3/2011:40 amSJC - MDW

Nonstop4h 05mSouthwest

mié. 3/259:00 pmMDW - SJC

Nonstop4h 45mSouthwest

Deal found 12/3

$387

mar. 1/278:40 amSJC - ORD

1 stop6h 24mUnited Airlines

mar. 1/279:25 pmORD - SJC

2 stops18h 14mUnited Airlines

Deal found 12/3

$442

mié. 12/246:20 amSJC - MDW

1 stop8h 59mDelta

sáb. 1/176:45 amMDW - SJC

1 stop8h 11mDelta

Deal found 12/2

$368

mar. 12/167:00 amSJC - ORD

1 stop29h 09mAlaska Airlines

vie. 12/198:39 amORD - SJC

1 stop7h 37mAlaska Airlines

Deal found 12/2

$456

vie. 1/166:30 amSJC - MDW

Nonstop4h 10mSouthwest

dom. 1/186:10 amMDW - SJC

1 stop6h 50mSouthwest

Deal found 12/1

$397

mié. 12/2412:31 pmSJC - ORD

1 stop9h 31mDelta

dom. 1/185:20 pmORD - SJC

1 stop6h 20mDelta

Deal found 12/2

$368

sáb. 1/176:00 amSJC - BMI

1 stop7h 25mAmerican Airlines

mié. 1/216:29 amBMI - SJC

1 stop9h 13mAmerican Airlines

Deal found 12/1

$460

jue. 3/1910:55 pmSJC - MDW

Nonstop4h 05mSouthwest

mar. 3/245:35 pmMDW - SJC

1 stop6h 35mSouthwest

Deal found 12/2

$397

dom. 12/712:40 pmSJC - MLI

1 stop6h 31mUnited Airlines

dom. 12/148:48 amMLI - SJC

1 stop6h 44mUnited Airlines

Deal found 12/3

$484

jue. 12/255:40 pmSJC - MDW

2 stops13h 09mDelta

vie. 1/161:49 pmMDW - SJC

1 stop9h 39mDelta

Deal found 12/2

$373

Last-minute flights from San Jose to Illinois
Discover last-minute flight deals from San Jose to Illinois. Data last updated diciembre 4, 2025 and is based on user searches.

jue. 12/182:53 pmSJC - ORD

1 stop7h 06mAlaska Airlines

mar. 1/68:39 amORD - SJC

1 stop7h 37mAlaska Airlines

Deal found 12/3

$356

vie. 1/27:05 amSJC - ORD

1 stop19h 57mAlaska Airlines

lun. 1/58:58 pmORD - SJC

1 stop16h 13mAlaska Airlines

Deal found 12/2

$361

lun. 1/510:45 pmSJC - MDW

2 stops12h 24mDelta

mié. 1/71:49 pmMDW - SJC

1 stop9h 39mDelta

Deal found 12/2

$360

jue. 1/88:05 pmSJC - ORD

2 stops10h 38mDelta

dom. 1/1111:05 amORD - SJC

2 stops13h 07mDelta

Deal found 12/1

$358

vie. 1/96:00 amSJC - STL

1 stop8h 14mAmerican Airlines

dom. 1/113:37 pmSTL - SJC

1 stop7h 52mAmerican Airlines

Deal found 12/2

$344

vie. 1/910:45 pmSJC - MDW

2 stops12h 03mDelta

dom. 1/111:49 pmMDW - SJC

2 stops11h 06mDelta

Deal found 12/1

$358

mié. 1/146:00 amSJC - STL

1 stop5h 53mAmerican Airlines

mié. 1/217:27 amSTL - SJC

1 stop6h 43mAmerican Airlines

Deal found 12/2

$205

dom. 1/1811:14 amSJC - STL

1 stop8h 00mFrontier

jue. 1/2210:01 pmSTL - SJC

1 stop12h 39mFrontier

Deal found 12/2

$268

jue. 1/2212:34 pmSJC - STL

1 stop6h 32mMultiple Airlines

lun. 1/262:50 pmSTL - SJC

1 stop20h 58mMultiple Airlines

Deal found 12/4

$255

jue. 1/228:04 pmSJC - STL

2 stops24h 42mAlaska Airlines

lun. 1/262:50 pmSTL - SJC

2 stops27h 47mAlaska Airlines

Deal found 12/4

$343

mar. 1/277:00 amSJC - MLI

2 stops13h 33mDelta

sáb. 1/315:51 amMLI - SJC

1 stop9h 05mDelta

Deal found 12/1

$359

mié. 1/286:30 amSJC - STL

1 stop5h 25mSouthwest

jue. 1/292:20 pmSTL - SJC

1 stop7h 15mSouthwest

Deal found 12/4

$235

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 diciembre 4, 2025.

mié. 1/712:46 pmSJC - ORD

1 stop8h 51mAlaska Airlines

Deal found 12/2

$61

jue. 1/811:27 amSJC - ORD

1 stop8h 05mFrontier

Deal found 12/2

$65

mar. 1/65:55 pmSJC - ORD

1 stop27h 42mAlaska Airlines

Deal found 12/2

$67

mié. 1/2112:46 pmSJC - ORD

1 stop8h 51mAlaska Airlines

Deal found 12/4

$68

jue. 1/222:59 pmSJC - ORD

1 stop6h 38mAlaska Airlines

Deal found 12/2

$73

mar. 1/205:45 pmSJC - ORD

1 stop18h 44mAlaska Airlines

Deal found 12/4

$74

lun. 1/2610:37 amSJC - STL

1 stop8h 13mFrontier

Deal found 12/3

$75

jue. 2/512:34 pmSJC - ORD

1 stop29h 55mFrontier

Deal found 12/3

$75

vie. 1/235:45 pmSJC - ORD

1 stop18h 44mAlaska Airlines

Deal found 12/2

$79

vie. 1/309:35 amSJC - STL

1 stop9h 13mFrontier

Deal found 12/2

$81

mar. 2/106:30 amSJC - ORD

Nonstop4h 14mAmerican Airlines

Deal found 12/4

$91

lun. 1/1211:44 amSJC - ORD

1 stop7h 48mFrontier

Deal found 12/3

$92

Find flight deals from San Jose to Illinois

Most accurate provider	Mytrip 3 stars
Most trusted provider	Mytrip 3 stars
Round-trip from	$220 (Orbitz)
One-way from	$61 (Alaska Airlines)
Popular in	December
Cheapest in	January
Average price	$468
Good round-trip deal	$445 or less
Good one-way deal	$175 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.

Search Deals

From San Jose to Illinois

Search Deals

One-way flight from San Jose to Illinois

Search Deals

High demand for flights, 7% potential price rise

Search Deals

Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in December 2025

Search Deals

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

Search Deals

Price to beat on a one-way flight from San Jose to Illinois.

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

San JoseSt. Louis

SJC - STL

SJCSTL

San Jose

mié. 1/14

2:32 pm-10:55 pm

1 stop6h 23m

Lambert-St Louis

mié. 1/21

9:25 am-6:34 pm

2 stops11h 09m

$210

San JoseSt. Louis

SJC - STL

SJCSTL

San Jose

mié. 1/28

6:30 am-1:55 pm

1 stop5h 25m

Lambert-St Louis

jue. 1/29

2:20 pm-7:35 pm

1 stop7h 15m

$235

San JoseSt. Louis

SJC - STL

SJCSTL

San Jose

mié. 3/4

11:45 am-12:25 am

2 stops10h 40m

Lambert-St Louis

mar. 3/10

6:32 am-5:29 pm

2 stops12h 57m

$254

San JoseSt. Louis

SJC - STL

SJCSTL

San Jose

jue. 2/5

8:55 am-5:50 pm

2 stops6h 55m

Lambert-St Louis

mar. 2/10

2:20 pm-9:55 pm

2 stops9h 35m

$282

San JoseSt. Louis

SJC - STL

SJCSTL

San Jose

dom. 1/18

11:14 am-9:14 pm

1 stop8h 00m

Lambert-St Louis

jue. 1/22

10:01 pm-8:40 am

1 stop12h 39m

$288

San JoseSt. Louis

SJC - STL

SJCSTL

San Jose

vie. 1/9

6:00 am-1:53 pm

1 stop5h 53m

Lambert-St Louis

dom. 1/11

3:37 pm-10:49 pm

2 stops9h 12m

$349

San JoseSt. Louis

SJC - STL

SJCSTL

San Jose

dom. 1/18

1:40 pm-9:38 pm

1 stop5h 58m

Lambert-St Louis

jue. 1/22

6:40 am-7:12 pm

2 stops14h 32m

$354

San JoseChicago

SJC - MDW

SJCMDW

San Jose

vie. 2/6

10:45 pm-12:46 pm

2 stops12h 01m

Chicago Midway

dom. 2/8

6:00 am-4:20 pm

2 stops12h 20m

$358

San JoseChicago

SJC - ORD

SJCORD

San Jose

vie. 1/16

9:15 am-9:05 pm

2 stops9h 50m

Chicago O'Hare Intl

lun. 1/19

8:50 am-4:20 pm

2 stops9h 30m

$358

San JoseMoline

SJC - MLI

SJCMLI

San Jose

mar. 1/27

7:00 am-10:33 pm

2 stops13h 33m

Moline Quad-City

sáb. 1/31

5:51 am-12:56 pm

1 stop9h 05m

$359

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/2

Showing 1-10 of 60 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, California to Illinois?

Currently, December is the cheapest month in which you can book a flight from San Jose, California to Illinois (average of $110). Flying from San Jose, California to Illinois in March is currently the most expensive (average of $194). 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?

It’s optimal to fly from San Jose, California to Illinois in the afternoon. By choosing this option you can save up to 30% on the cost of your flight, compared to a flight in the evening.

What is the cheapest day to fly from San Jose, California to Illinois?

Travelers seeking maximum savings on their San Jose, California to Illinois flight should consider departing on Wednesday afternoons when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Illinois

Read through reviews of airlines operating flights from San Jose to Illinois, such as Southwest, Delta, and United Airlines. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Southwest

8.0

Very good

4,250 reviews

Reviews

1 / 20

10.0

Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.

Southwest

8.0

Very good

4,250 reviews

Southwest

8.0

Very good

4,250 reviews

Reviews

1 / 20

10.0

Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.

Delta

7.9

Good

8,011 reviews

Southwest

8.0

Very good

4,250 reviews

Reviews

1 / 20

10.0

Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.

United Airlines

7.4

Good

9,066 reviews

Southwest

8.0

Very good

4,250 reviews

Reviews

1 / 20

10.0

Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.

American Airlines

7.2

Good

11,047 reviews

Southwest

8.0

Very good

4,250 reviews

Reviews

1 / 20

10.0

Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.

Frontier

5.8

Fair

3,091 reviews

Southwest

8.0

Very good

4,250 reviews

Reviews

1 / 20

10.0

Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.

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.
How long is the flight from San Jose, California to Illinois?
Departing from San Jose, California to Illinois will take you 5h 25m. There are 1710 mi between San Jose, California and Illinois. Both multi-stop and nonstop flights can be found to your destination and back.
What are the cheapest airlines to fly from San Jose, California to Illinois one-way?
For one-way options, check prices for Frontier. According to our data, you can fly for as low as $43. Users have also found prices from $57 and $89 on Spirit Airlines and American Airlines, respectively.
What are the most popular routes from San Jose, California to Illinois?
The most popular route from San Jose, California 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, California to Illinois?
While on average a flight from San Jose, California to Illinois is generally $397, our data shows the cheapest flight currently is $148. When looking at the most popular route, (San Jose - Chicago O'Hare Intl), you can expect to pay $141 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, California to Illinois?
Currently, December is the cheapest month in which you can book a flight from San Jose, California to Illinois (average of $110). Flying from San Jose, California to Illinois in March is currently the most expensive (average of $194). 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$282	FlexibilityNo cancel fee	On-time62%
Spirit Airlines	Cheapest$125	Average$260	FlexibilityNo cancel fee	On-time65%
Alaska Airlines	Cheapest$170	Average$315	FlexibilityNo cancel fee	On-time75%
American Airlines	Cheapest$200	Average$577	FlexibilityNo cancel fee	On-time71%
Delta	Cheapest$256	Average$399	FlexibilityNo cancel fee	On-timeN/A
United Airlines	Cheapest$287	Average$443	FlexibilityNo cancel fee	On-time69%
Southwest	Cheapest$330	Average$504	FlexibilityNo cancel fee	On-time63%

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$61+ Cheap flights from San Jose, CA (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 1/7. Fares are subject to change and may not be available on all flights or dates of travel.

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Cheap 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 diciembre 4, 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 diciembre 4, 2025.

Find 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 diciembre 4, 2025.

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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.

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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, California 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 diciembre 4, 2025.

What is the cheapest day to fly from San Jose, California to Illinois?

Use this chart to determine the cheapest time to fly round-trip from San Jose to Illinois. Price data was last updated on December 16, 2024.

Reviews of airlines servicing Illinois

Read through reviews of airlines operating flights from San Jose to Illinois, such as Southwest, Delta, and United Airlines. You can also see how each airline stacks up in terms of 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?

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

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

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Alternative routes for San Jose to Illinois

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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 diciembre 4, 2025.