Illinois

$94+ Cheap flights from San Juan 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 5/3. Fares are subject to change and may not be available on all flights or dates of travel.
SJU — ORD
Apr 7 — Apr 141
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Cheap flight deals from San Juan to Illinois

Keep the following information in mind while searching for San Juan to Illinois flight deals. Data was last updated April 2, 2025.

Round-trip from

$192
(eDestinos)

One-way from

$94
(Cheapflightsfares)

Popular in

March

Cheapest in

January

Average price

$332
From San Juan to Illinois
One-way flight from San Juan to Illinois
Highest demand for flights based on searches. 8% potential increase in price ($29 potential increase over avg. RT price).
Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
Average for round-trip flights in April 2025

Find flight deals from San Juan to Illinois

Cheapest flights from San Juan to Illinois
Explore the most affordable flight options available from San Juan to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 2, 2025.

This eDestinos deal was found by Cheapflights users on 4/1. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/246:38 pmSJU - ORD
1 stop7h 20mSpirit Airlines
Tue 4/295:36 amORD - SJU
1 stop8h 59mSpirit Airlines
Deal found 4/1$192
This Delta deal was found by Cheapflights users on 4/2. 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.
Fri 5/26:15 amSJU - STL
1 stop9h 45mDelta
Mon 5/54:05 pmSTL - SJU
1 stop6h 10mDelta
Deal found 4/2$209
This CheapOair deal was found by Cheapflights users on 4/1. 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.
Fri 4/119:37 pmSJU - ORD
1 stop18h 21mMultiple Airlines
Tue 4/157:00 pmORD - SJU
1 stop12h 26mMultiple Airlines
Deal found 4/1$246
This eDestinos deal was found by Cheapflights users on 4/1. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/19:58 pmSJU - ORD
1 stop22h 20mFrontier
Thu 5/86:00 amORD - SJU
1 stop12h 44mFrontier
Deal found 4/1$270
This American Airlines deal was found by Cheapflights users on 4/2. 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.
Fri 5/97:15 amSJU - STL
1 stop15h 11mAmerican Airlines
Sun 5/116:00 amSTL - SJU
1 stop15h 30mAmerican Airlines
Deal found 4/2$286
This CheapOair deal was found by Cheapflights users on 4/1. 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.
Fri 5/96:00 amSJU - STL
1 stop19h 14mMultiple Airlines
Sun 5/1110:10 amSTL - SJU
1 stop7h 57mMultiple Airlines
Deal found 4/1$288
This Frontier deal was found by Cheapflights users on 4/2. 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.
Thu 5/13:56 amSJU - MDW
1 stop9h 28mFrontier
Sun 5/410:55 amMDW - SJU
1 stop12h 10mFrontier
Deal found 4/2$296
This CheapOair deal was found by Cheapflights users on 4/2. 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.
Thu 5/13:56 amSJU - STL
1 stop21h 18mFrontier
Mon 5/55:45 pmSTL - SJU
1 stop16h 11mFrontier
Deal found 4/2$298
This American Airlines deal was found by Cheapflights users on 4/1. 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.
Fri 9/198:30 amSJU - ORD
1 stop16h 27mAmerican Airlines
Mon 9/226:00 amORD - SJU
1 stop7h 47mAmerican Airlines
Deal found 4/1$307
This CheapOair deal was found by Cheapflights users on 4/2. 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.
Fri 5/168:12 pmSJU - STL
1 stop14h 03mSpirit Airlines
Sun 5/1810:10 amSTL - SJU
1 stop7h 57mSpirit Airlines
Deal found 4/2$314
This JetBlue deal was found by Cheapflights users on 3/31. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/293:28 amSJU - ORD
1 stop9h 45mJetBlue
Wed 5/74:03 pmORD - SJU
1 stop8h 46mJetBlue
Deal found 3/31$314
This Southwest deal was found by Cheapflights users on 4/2. 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.
Fri 5/25:35 amSJU - STL
2 stops11h 25mSouthwest
Sun 5/44:35 pmSTL - SJU
1 stop6h 05mSouthwest
Deal found 4/2$347

Cheapflights Fare Finder

Customize your flight search to find flights from San Juan 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 April 2, 2025.
Use the filters below to find and compare flights from San Juan to Illinois that are best for you.

Fly from

San Juan

Fly to

Illinois

Route

Depart

Return

Price

San JuanChicago

SJU - ORD

SJUORD

San Juan Luis Munoz Marin Intl

Thu 4/24

6:38 pm-12:58 am

1 stop7h 20m

Chicago O'Hare Intl

Tue 4/29

5:36 am-3:35 pm

1 stop8h 59m

$192

San JuanSt. Louis

SJU - STL

SJUSTL

San Juan Luis Munoz Marin Intl

Fri 5/2

6:15 am-3:00 pm

1 stop9h 45m

Lambert-St Louis

Mon 5/5

4:05 pm-11:15 pm

1 stop6h 10m

$209

San JuanChicago

SJU - ORD

SJUORD

San Juan Luis Munoz Marin Intl

Wed 4/23

5:59 pm-12:20 am

1 stop7h 21m

Chicago O'Hare Intl

Mon 4/28

4:30 pm-2:49 am

1 stop9h 19m

$265

San JuanChicago

SJU - ORD

SJUORD

San Juan Luis Munoz Marin Intl

Thu 5/1

9:58 pm-7:18 pm

1 stop22h 20m

Chicago O'Hare Intl

Thu 5/8

6:00 am-7:44 pm

1 stop12h 44m

$270

San JuanSt. Louis

SJU - STL

SJUSTL

San Juan Luis Munoz Marin Intl

Fri 5/9

7:15 am-9:26 pm

1 stop15h 11m

Lambert-St Louis

Sun 5/11

6:00 am-10:30 pm

1 stop15h 30m

$286

San JuanSt. Louis

SJU - STL

SJUSTL

San Juan Luis Munoz Marin Intl

Fri 5/9

6:00 am-12:14 am

1 stop19h 14m

Lambert-St Louis

Sun 5/11

10:10 am-7:07 pm

1 stop7h 57m

$288

San JuanChicago

SJU - MDW

SJUMDW

San Juan Luis Munoz Marin Intl

Thu 5/1

3:56 am-12:24 pm

1 stop9h 28m

Chicago Midway

Sun 5/4

10:55 am-12:05 am

1 stop12h 10m

$296

San JuanSt. Louis

SJU - STL

SJUSTL

San Juan Luis Munoz Marin Intl

Thu 5/1

3:56 am-12:14 am

1 stop21h 18m

Lambert-St Louis

Mon 5/5

5:45 pm-10:56 am

1 stop16h 11m

$298

San JuanChicago

SJU - ORD

SJUORD

San Juan Luis Munoz Marin Intl

Fri 9/19

8:30 am-11:57 pm

1 stop16h 27m

Chicago O'Hare Intl

Mon 9/22

6:00 am-2:47 pm

1 stop7h 47m

$307

San JuanChicago

SJU - ORD

SJUORD

San Juan Luis Munoz Marin Intl

Tue 4/29

3:28 am-12:13 pm

1 stop9h 45m

Chicago O'Hare Intl

Wed 5/7

4:03 pm-1:49 am

1 stop8h 46m

$314

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/2

Showing 1-10 of 36 results
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Best time to book a flight from San Juan to Illinois

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

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

Currently, August is the cheapest month in which you can book a flight from San Juan to Illinois (average of $245). Flying from San Juan to Illinois in March is currently the most expensive (average of $321). 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 SJU to IL?

Find hourly flight availability from San Juan 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 April 2, 2025.

When flying from San Juan 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.

Weekly flight availability from San Juan to Illinois

Explore weekly flight availability from San Juan to Illinois. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated April 2, 2025.

The most flights from PR1 to USIL are scheduled on a Monday (10 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (8 on average).

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 April 2, 2025.
Read through reviews of airlines operating flights from San Juan to Illinois, such as Alaska Airlines, Southwest and Delta. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Boarding

8.2

Food

7.1

Overall

8.0

Crew

8.5

Entertainment

7.1

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Boarding

8.2

Food

7.1

Overall

8.0

Crew

8.5

Entertainment

7.1

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Boarding

8.2

Food

7.1

Overall

8.0

Crew

8.5

Entertainment

7.1

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
8.0
Very good

Boarding

8.2

Food

7.1

Overall

8.0

Crew

8.5

Entertainment

7.1

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Avelo Airlines
7.5
Good

Boarding

8.2

Food

7.1

Overall

8.0

Crew

8.5

Entertainment

7.1

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Boarding

8.2

Food

7.1

Overall

8.0

Crew

8.5

Entertainment

7.1

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Related info for your journey

Find useful and relevant information for your journey from San Juan to Illinois. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • What are the cheapest airlines to fly from San Juan to Illinois one-way?

    For one-way options, check prices for Spirit Airlines. According to our data, you can fly for as low as $94. Users have also found prices from $135 and $172 on Frontier and Avelo Airlines, respectively.

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

  • What are the most reliable airlines from San Juan to Illinois?

    Consider American Airlines (85%), Alaska Airlines (85%) or Spirit Airlines (85%) when booking your flight. These represent the most reliable airlines when flying from San Juan to Illinois.

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

    Looking for the cheapest flight from San Juan to Illinois? While on average our users pay $481, our data indicates the cheapest price to be $135. The most popular route (San Juan Luis Munoz Marin Intl - Chicago O'Hare Intl), is priced around $199.

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from San Juan to Illinois (average of $245). Flying from San Juan to Illinois in March is currently the most expensive (average of $321). 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 San Juan to Illinois

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

Top 6 airlines flying from San Juan to Illinois

Discover the top 6 airlines that operate flights from San Juan 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 April 2, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$137Average$241FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$139Average$257FlexibilityNo cancel feeOn-time65%
DeltaCheapest$172Average$424FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$214Average$451FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$257Average$420FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$307Average$462FlexibilityNo cancel feeOn-time71%

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