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 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.

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 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 $880, our data shows the cheapest flight currently is $157. When looking at the most popular route, (San Jose - Chicago O'Hare Intl), you can expect to pay $124 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 73% 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?

September can be a great time to fly to Illinois from San Jose with a flight ticket averaging about $412. Cheapflights users have found deals in the month of September for as cheap as $133. The most expensive prices can be found in the month of March.

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.

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.

$63+ Flights from San Jose to Illinois

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Cheap flight deals from San Jose to Illinois

Round-trip from	$140 (Mytrip)
One-way from	$63 (Mytrip)

From San Jose to Illinois

Search Deals

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 9, 2025.

Thu 1/231:11 pmSJC - STL

1 stop18h 05mFrontier

Sun 1/268:31 pmSTL - SJC

1 stop21h 58mFrontier

Deal found 1/7

$140

Thu 1/309:34 pmSJC - ORD

1 stop5h 57mMultiple Airlines

Mon 2/37:50 amORD - SJC

1 stop6h 21mMultiple Airlines

Deal found 1/8

$173

Sat 3/84:03 pmSJC - MDW

1 stop6h 14mFrontier

Wed 3/126:40 amMDW - SJC

1 stop10h 23mFrontier

Deal found 1/9

$175

Sun 2/91:11 pmSJC - ORD

1 stop9h 21mFrontier

Mon 2/176:50 amORD - SJC

1 stop10h 13mFrontier

Deal found 1/9

$175

Thu 2/65:09 pmSJC - ORD

2 stops10h 22mSpirit Airlines

Tue 2/111:39 pmORD - SJC

1 stop7h 28mSpirit Airlines

Deal found 1/7

$177

Thu 1/239:34 pmSJC - PIA

1 stop13h 20mMultiple Airlines

Mon 1/279:14 pmPIA - SJC

1 stop15h 27mMultiple Airlines

Deal found 1/7

$215

Fri 2/71:10 pmSJC - STL

1 stop8h 49mAlaska Airlines

Mon 2/102:49 pmSTL - SJC

1 stop10h 38mAlaska Airlines

Deal found 1/8

$246

Sat 2/226:10 amSJC - STL

1 stop8h 23mAmerican Airlines

Tue 2/257:04 amSTL - SJC

1 stop8h 30mAmerican Airlines

Deal found 1/9

$247

Wed 1/1511:36 amSJC - MDW

1 stop22h 08mMultiple Airlines

Sun 1/197:15 amMDW - SJC

1 stop6h 56mMultiple Airlines

Deal found 1/8

$267

Fri 2/76:20 pmSJC - STL

2 stops13h 16mDelta

Mon 2/105:00 pmSTL - SJC

1 stop8h 52mDelta

Deal found 1/8

$283

Wed 1/296:10 amSJC - MLI

1 stop6h 46mAmerican Airlines

Sat 2/13:28 pmMLI - SJC

1 stop8h 00mAmerican Airlines

Deal found 1/9

$284

Tue 2/45:00 pmSJC - ORD

1 stop18h 07mAlaska Airlines

Sat 2/86:55 pmORD - SJC

1 stop18h 19mAlaska Airlines

Deal found 1/8

$287

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 January 9, 2025.

Thu 1/231:11 pmSJC - STL

1 stop18h 05mFrontier

Sun 1/268:31 pmSTL - SJC

1 stop21h 58mFrontier

Deal found 1/7

$140

Thu 1/309:34 pmSJC - ORD

1 stop5h 57mMultiple Airlines

Mon 2/37:50 amORD - SJC

1 stop6h 21mMultiple Airlines

Deal found 1/8

$173

Thu 2/65:09 pmSJC - ORD

2 stops10h 22mSpirit Airlines

Tue 2/111:39 pmORD - SJC

1 stop7h 28mSpirit Airlines

Deal found 1/7

$177

Fri 2/71:10 pmSJC - STL

1 stop8h 49mAlaska Airlines

Mon 2/102:49 pmSTL - SJC

1 stop10h 38mAlaska Airlines

Deal found 1/8

$246

Sat 2/226:10 amSJC - STL

1 stop8h 23mAmerican Airlines

Tue 2/257:04 amSTL - SJC

1 stop8h 30mAmerican Airlines

Deal found 1/9

$247

Fri 2/76:20 pmSJC - STL

2 stops13h 16mDelta

Mon 2/105:00 pmSTL - SJC

1 stop8h 52mDelta

Deal found 1/8

$283

Tue 1/2811:10 amSJC - MDW

Nonstop4h 05mSouthwest

Tue 2/48:35 amMDW - SJC

Nonstop4h 50mSouthwest

Deal found 1/8

$333

Wed 2/56:30 amSJC - ORD

Nonstop4h 20mUnited Airlines

Wed 2/129:05 amORD - SJC

Nonstop4h 51mUnited Airlines

Deal found 1/8

$333

Sat 3/84:03 pmSJC - MDW

1 stop6h 14mFrontier

Wed 3/126:40 amMDW - SJC

1 stop10h 23mFrontier

Deal found 1/9

$175

Sun 2/91:11 pmSJC - ORD

1 stop9h 21mFrontier

Mon 2/176:50 amORD - SJC

1 stop10h 13mFrontier

Deal found 1/9

$175

Thu 1/239:34 pmSJC - PIA

1 stop13h 20mMultiple Airlines

Mon 1/279:14 pmPIA - SJC

1 stop15h 27mMultiple Airlines

Deal found 1/7

$215

Wed 1/296:10 amSJC - MLI

1 stop6h 46mAmerican Airlines

Sat 2/13:28 pmMLI - SJC

1 stop8h 00mAmerican Airlines

Deal found 1/9

$284

Last-minute flights from San Jose to Illinois
Discover last-minute flight deals from San Jose to Illinois. Data last updated January 9, 2025 and is based on user searches.

Tue 1/148:55 amSJC - ORD

2 stops27h 30mSouthwest

Fri 1/175:45 pmORD - SJC

2 stops20h 25mSouthwest

Deal found 1/9

$710

Wed 1/159:34 pmSJC - ORD

1 stop5h 57mSpirit Airlines

Wed 1/221:39 pmORD - SJC

1 stop9h 00mSpirit Airlines

Deal found 1/8

$209

Wed 1/1511:36 amSJC - ORD

1 stop27h 49mMultiple Airlines

Sun 1/197:25 amORD - SJC

1 stop6h 46mMultiple Airlines

Deal found 1/8

$266

Wed 1/1511:36 amSJC - MDW

1 stop22h 08mMultiple Airlines

Sun 1/197:15 amMDW - SJC

1 stop6h 56mMultiple Airlines

Deal found 1/8

$267

Wed 1/1511:00 amSJC - ORD

2 stops10h 59mAlaska Airlines

Tue 1/217:45 amORD - SJC

2 stops13h 10mAlaska Airlines

Deal found 1/8

$613

Thu 1/165:50 amSJC - STL

1 stop5h 28mDelta

Mon 1/206:00 amSTL - SJC

1 stop8h 10mDelta

Deal found 1/8

$444

Thu 1/1611:36 amSJC - STL

3 stops22h 34mMultiple Airlines

Mon 1/201:00 pmSTL - SJC

3 stops23h 41mMultiple Airlines

Deal found 1/8

$507

Thu 1/1612:55 pmSJC - STL

2 stops23h 19mUnited Airlines

Mon 1/201:45 pmSTL - SJC

1 stop6h 01mUnited Airlines

Deal found 1/8

$616

Thu 1/1611:12 amSJC - STL

2 stops24h 41mAlaska Airlines

Mon 1/202:49 pmSTL - SJC

1 stop10h 38mAlaska Airlines

Deal found 1/8

$659

Fri 1/171:11 pmSJC - ORD

1 stop9h 21mFrontier

Fri 1/247:25 amORD - SJC

1 stop6h 46mFrontier

Deal found 1/8

$236

Fri 1/171:11 pmSJC - MDW

1 stop9h 06mFrontier

Sun 1/197:15 amMDW - SJC

1 stop6h 56mFrontier

Deal found 1/9

$302

Fri 1/171:30 pmSJC - ORD

1 stop5h 52mDelta

Fri 1/314:15 pmORD - SJC

1 stop6h 55mDelta

Deal found 1/7

$621

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 January 9, 2025.

Thu 1/235:19 pmSJC - STL

1 stop24h 12mFrontier

Deal found 1/8

$63

Fri 2/289:18 pmSJC - ORD

1 stop6h 49mSpirit Airlines

Deal found 1/9

$78

Thu 1/301:11 pmSJC - MDW

1 stop9h 06mFrontier

Deal found 1/9

$82

Sun 4/276:00 pmSJC - ORD

1 stop9h 11mFrontier

Deal found 1/8

$82

Wed 1/159:41 amSJC - ORD

2 stops29h 44mMultiple Airlines

Deal found 1/8

$86

Wed 1/1511:36 amSJC - MDW

1 stop22h 08mMultiple Airlines

Deal found 1/7

$99

Mon 4/71:02 pmSJC - STL

1 stop8h 57mAlaska Airlines

Deal found 1/8

$123

Sat 2/86:10 amSJC - STL

1 stop8h 13mAmerican Airlines

Deal found 1/7

$124

Fri 2/75:50 amSJC - STL

1 stop5h 28mDelta

Deal found 1/9

$129

Wed 1/159:34 pmSJC - RFD

1 stop12h 20mMultiple Airlines

Deal found 1/7

$132

Wed 2/198:12 amSJC - ORD

1 stop7h 48mAlaska Airlines

Deal found 1/8

$145

Tue 3/186:15 amSJC - MDW

1 stop6h 00mDelta

Deal found 1/8

$150

Find flights from San Jose to Illinois within your budget

Fly from

Fly to

Route

Depart

Return

Price

San JoseSt. Louis

SJC - STL

SJCSTL

San Jose

Thu 1/23

1:11 pm-9:16 am

1 stop18h 05m

Lambert-St Louis

Sun 1/26

8:31 pm-4:29 pm

1 stop21h 58m

$140

San JoseChicago

SJC - ORD

SJCORD

San Jose

Thu 1/30

9:34 pm-5:31 am

1 stop5h 57m

Chicago O'Hare Intl

Mon 2/3

7:50 am-12:11 pm

1 stop6h 21m

$173

San JoseChicago

SJC - MDW

SJCMDW

San Jose

Sat 3/8

4:03 pm-12:17 am

1 stop6h 14m

Chicago Midway

Wed 3/12

6:40 am-3:03 pm

1 stop10h 23m

$175

San JoseChicago

SJC - ORD

SJCORD

San Jose

Sun 2/9

1:11 pm-12:32 am

1 stop9h 21m

Chicago O'Hare Intl

Mon 2/17

6:50 am-3:03 pm

1 stop10h 13m

$175

San JoseChicago

SJC - ORD

SJCORD

San Jose

Thu 2/6

5:09 pm-5:31 am

2 stops10h 22m

Chicago O'Hare Intl

Tue 2/11

1:39 pm-7:07 pm

1 stop7h 28m

$177

San JosePeoria

SJC - PIA

SJCPIA

San Jose

Thu 1/23

9:34 pm-12:54 pm

1 stop13h 20m

Greater Peoria

Mon 1/27

9:14 pm-10:41 am

1 stop15h 27m

$215

San JoseSt. Louis

SJC - STL

SJCSTL

San Jose

Fri 2/7

1:10 pm-11:59 pm

1 stop8h 49m

Lambert-St Louis

Mon 2/10

2:49 pm-11:27 pm

1 stop10h 38m

$246

San JoseSt. Louis

SJC - STL

SJCSTL

San Jose

Sat 2/22

6:10 am-4:33 pm

1 stop8h 23m

Lambert-St Louis

Tue 2/25

7:04 am-1:34 pm

1 stop8h 30m

$247

San JoseSt. Louis

SJC - STL

SJCSTL

San Jose

Fri 2/7

6:20 pm-9:36 am

2 stops13h 16m

Lambert-St Louis

Mon 2/10

5:00 pm-11:52 pm

1 stop8h 52m

$283

San JoseMoline

SJC - MLI

SJCMLI

San Jose

Wed 1/29

6:10 am-2:56 pm

1 stop6h 46m

Moline Quad-City

Sat 2/1

3:28 pm-9:28 pm

1 stop8h 00m

$284

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/8

Showing 1-10 of 53 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.

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.

Find cheap flights from San Jose to Illinois with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from San Jose to Illinois

Round-trip from

One-way from

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 9, 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 January 9, 2025.

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 January 9, 2025.

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 January 9, 2025.

Last-minute flights from San Jose to Illinois
Discover last-minute flight deals from San Jose to Illinois. Data last updated January 9, 2025 and is based on user searches.

Discover last-minute flight deals from San Jose to Illinois. Data last updated January 9, 2025 and is based on user searches.

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 January 9, 2025.

Search for one-way flight options from San Jose to Illinois. Find affordable one-way fares based on user searches. Data last updated January 9, 2025.

Find flights from San Jose to Illinois within your budget

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.

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.

$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.

Find cheap flights from San Jose to Illinois with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from San Jose to Illinois

Round-trip from

One-way from

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 January 9, 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 January 9, 2025.

Find flights from San Jose to Illinois within your budget

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.

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.

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 9, 2025.