Illinois

$105+ Cheap flights from Luis Munoz Marin Intl (SJU) 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 5/29. Fares are subject to change and may not be available on all flights or dates of travel.
SJU — ORD
May 5 — May 121
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Cheap flight deals from Luis Munoz Marin Intl to Illinois

Keep the following information in mind while searching for Luis Munoz Marin Intl to Illinois flight deals. Data was last updated April 30, 2025.

Round-trip from

$188
(eDestinos)

One-way from

$105
(Delta)

Popular in

March

Cheapest in

January

Average price

$339

Good round-trip deal

$319 or less

Good one-way deal

$186 or less
From San Juan Luis Munoz Marin Intl to Illinois
One-way flight from San Juan Luis Munoz Marin Intl to Illinois
Highest demand for flights based on searches. 9% potential increase in price ($30 potential increase over avg. RT price).
Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).
Average for round-trip flights in April 2025
Price to beat on a round-trip flight from San Juan Luis Munoz Marin Intl to Illinois.
Price to beat on a one-way flight from San Juan Luis Munoz Marin Intl to Illinois.

Find flight deals from Luis Munoz Marin Intl to Illinois

Cheapest flights from Luis Munoz Marin Intl to Illinois
Explore the most affordable flight options available from Luis Munoz Marin Intl to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 30, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 4/28. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/308:12 pmSJU - ORD
1 stop13h 38mSpirit Airlines
Sun 6/111:30 amORD - SJU
Nonstop4h 46mSpirit Airlines
Deal found 4/28$183
This Delta deal was found by Cheapflights users on 4/29. 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 8/2112:56 pmSJU - STL
1 stop8h 51mDelta
Tue 8/266:00 amSTL - SJU
1 stop6h 29mDelta
Deal found 4/29$245
This Booking.com deal was found by Cheapflights users on 4/28. 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.
Mon 5/196:00 amSJU - ORD
1 stop13h 29mMultiple Airlines
Mon 6/29:55 amORD - SJU
1 stop7h 55mMultiple Airlines
Deal found 4/28$255
This eDestinos deal was found by Cheapflights users on 4/28. 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.
Wed 5/73:56 amSJU - ORD
1 stop20h 36mFrontier
Mon 5/124:15 pmORD - SJU
1 stop9h 36mFrontier
Deal found 4/28$270
This American Airlines deal was found by Cheapflights users on 4/28. 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.
Thu 8/218:00 amSJU - STL
1 stop16h 55mAmerican Airlines
Tue 8/266:00 amSTL - SJU
1 stop15h 55mAmerican Airlines
Deal found 4/28$290
This Cheapflightsfares deal was found by Cheapflights users on 4/29. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/86:00 amSJU - MDW
1 stop7h 24mFrontier
Mon 5/126:15 amMDW - SJU
1 stop7h 32mFrontier
Deal found 4/29$292
This Frontier deal was found by Cheapflights users on 4/29. 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 5/92:34 pmSJU - STL
1 stop10h 40mFrontier
Tue 5/135:45 pmSTL - SJU
1 stop8h 06mFrontier
Deal found 4/29$298
This Priceline deal was found by Cheapflights users on 4/28. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/92:34 pmSJU - STL
1 stop10h 40mMultiple Airlines
Sun 5/1110:10 amSTL - SJU
1 stop7h 57mMultiple Airlines
Deal found 4/28$306
This United Airlines deal was found by Cheapflights users on 4/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/201:05 amSJU - STL
2 stops14h 28mUnited Airlines
Tue 8/266:35 amSTL - SJU
1 stop7h 09mUnited Airlines
Deal found 4/28$321
This Cheapflightsfares deal was found by Cheapflights users on 4/28. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/105:41 pmSJU - STL
1 stop15h 08mSpirit Airlines
Sun 7/138:44 amSTL - SJU
1 stop7h 02mSpirit Airlines
Deal found 4/28$368
This Southwest deal was found by Cheapflights users on 4/28. 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.
Thu 10/25:50 amSJU - MDW
2 stops8h 30mSouthwest
Mon 10/69:35 amMDW - SJU
2 stops11h 20mSouthwest
Deal found 4/28$381
This Delta deal was found by Cheapflights users on 4/29. 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 10/27:30 amSJU - MDW
1 stop8h 24mDelta
Sun 10/56:00 amMDW - SJU
1 stop9h 08mDelta
Deal found 4/29$391

Cheapflights Fare Finder

Customize your flight search to find flights from Luis Munoz Marin Intl 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 30, 2025.
Use the filters below to find and compare flights from San Juan Luis Munoz Marin Intl Airport to Illinois that are best for you.

Fly from

Luis Munoz Marin Intl

Fly to

Illinois

Route

Depart

Return

Price

San JuanChicago

SJU - ORD

SJUORD

San Juan Luis Munoz Marin Intl

Thu 5/29

8:12 pm-8:50 am

1 stop13h 38m

Chicago O'Hare Intl

Thu 6/5

11:30 am-5:16 pm

Nonstop4h 46m

$188

San JuanSt. Louis

SJU - STL

SJUSTL

San Juan Luis Munoz Marin Intl

Thu 8/21

12:56 pm-8:47 pm

1 stop8h 51m

Lambert-St Louis

Tue 8/26

6:00 am-1:29 pm

1 stop6h 29m

$245

San JuanChicago

SJU - ORD

SJUORD

San Juan Luis Munoz Marin Intl

Sun 5/11

3:56 am-11:32 pm

1 stop20h 36m

Chicago O'Hare Intl

Tue 6/3

11:30 am-5:16 pm

Nonstop4h 46m

$253

San JuanChicago

SJU - ORD

SJUORD

San Juan Luis Munoz Marin Intl

Thu 5/8

2:14 pm-11:32 pm

1 stop10h 18m

Chicago O'Hare Intl

Sun 5/11

4:15 pm-2:51 am

1 stop9h 36m

$270

San JuanSt. Louis

SJU - STL

SJUSTL

San Juan Luis Munoz Marin Intl

Thu 8/21

8:00 am-11:55 pm

1 stop16h 55m

Lambert-St Louis

Tue 8/26

6:00 am-10:55 pm

1 stop15h 55m

$290

San JuanSt. Louis

SJU - STL

SJUSTL

San Juan Luis Munoz Marin Intl

Fri 5/9

2:34 pm-12:14 am

1 stop10h 40m

Lambert-St Louis

Tue 5/13

5:45 pm-2:51 am

1 stop8h 06m

$298

San JuanChicago

SJU - MDW

SJUMDW

San Juan Luis Munoz Marin Intl

Fri 5/9

6:00 am-5:28 pm

1 stop12h 28m

Chicago Midway

Fri 5/16

1:19 pm-10:01 pm

1 stop7h 42m

$298

San JuanSt. Louis

SJU - STL

SJUSTL

San Juan Luis Munoz Marin Intl

Fri 5/9

2:34 pm-12:14 am

1 stop10h 40m

Lambert-St Louis

Sun 5/11

10:10 am-7:07 pm

1 stop7h 57m

$306

San JuanSt. Louis

SJU - STL

SJUSTL

San Juan Luis Munoz Marin Intl

Wed 8/20

1:05 am-2:33 pm

2 stops14h 28m

Lambert-St Louis

Tue 8/26

6:35 am-2:44 pm

1 stop7h 09m

$321

San JuanChicago

SJU - ORD

SJUORD

San Juan Luis Munoz Marin Intl

Tue 5/13

7:01 am-3:04 pm

1 stop9h 03m

Chicago O'Hare Intl

Wed 5/14

6:15 am-4:15 pm

1 stop9h 00m

$343

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

Showing 1-10 of 36 results
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Best time to book a flight from Luis Munoz Marin Intl to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from Luis Munoz Marin Intl 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 Luis Munoz Marin Intl Airport to Illinois

What is the cheapest month to book a flight from San Juan Luis Munoz Marin Intl Airport to Illinois?

Currently, August is the cheapest month in which you can book a flight from San Juan Luis Munoz Marin Intl Airport to Illinois (average of $245). Flying from San Juan Luis Munoz Marin Intl Airport 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 Luis Munoz Marin Intl 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 30, 2025.

When flying from San Juan Luis Munoz Marin Intl Airport 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 Luis Munoz Marin Intl Airport to Illinois

Explore weekly flight availability from Luis Munoz Marin Intl 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 30, 2025.

The most flights from SJU to USIL are scheduled on a Monday (9 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (4 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 30, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines, Southwest and Delta from San Juan to Illinois to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Comfort

7.9

Food

7.1

Crew

8.5

Overall

8.0

Entertainment

7.1

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Comfort

7.9

Food

7.1

Crew

8.5

Overall

8.0

Entertainment

7.1

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Comfort

7.9

Food

7.1

Crew

8.5

Overall

8.0

Entertainment

7.1

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
8.0
Very good

Comfort

7.9

Food

7.1

Crew

8.5

Overall

8.0

Entertainment

7.1

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Comfort

7.9

Food

7.1

Crew

8.5

Overall

8.0

Entertainment

7.1

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Comfort

7.9

Food

7.1

Crew

8.5

Overall

8.0

Entertainment

7.1

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Related info for your journey

Find useful and relevant information for your journey from Luis Munoz Marin Intl 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 Luis Munoz Marin Intl Airport to Illinois one-way?

    The cheapest airline one-way is Delta, with whom users have recently found tickets for as low as $105. However, be on the lookout for offers from Spirit Airlines and American Airlines, as they are both options that can get you from San Juan Luis Munoz Marin Intl Airport to Illinois for a low price.

  • What are the most popular routes from San Juan Luis Munoz Marin Intl Airport to Illinois?

  • What are the most reliable airlines from San Juan Luis Munoz Marin Intl Airport to Illinois?

    Before booking your flight to Illinois from San Juan Luis Munoz Marin Intl Airport, check out the most reliable airlines to get you to your destination on time: Spirit Airlines (81%), American Airlines (78%), Alaska Airlines( 76%).

  • What are the cheapest flights from San Juan Luis Munoz Marin Intl Airport to Illinois?

    On average you can expect to pay $487 for a flight from San Juan Luis Munoz Marin Intl Airport to Illinois. The cheapest flight overall is $134 while the most popular route, (San Juan Luis Munoz Marin Intl - Chicago O'Hare Intl) is currently priced at $152.

  • Can I find deals for flights from Luis Munoz Marin Intl to Illinois that include hotel bookings?

    Yes. In addition to deals on Luis Munoz Marin Intl to Illinois flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Luis Munoz Marin Intl to Illinois?

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

  • Can I find deals for business class flights from Luis Munoz Marin Intl to Illinois?

    Yes. Cheapflights offers flight deals from Luis Munoz Marin Intl 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 Luis Munoz Marin Intl Airport to Illinois?

    Currently, August is the cheapest month in which you can book a flight from San Juan Luis Munoz Marin Intl Airport to Illinois (average of $245). Flying from San Juan Luis Munoz Marin Intl Airport 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 Luis Munoz Marin Intl to Illinois

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

Top 6 airlines flying from Luis Munoz Marin Intl to Illinois

Discover the top 6 airlines that operate flights from Luis Munoz Marin Intl 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 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$137Average$248FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$139Average$258FlexibilityNo cancel feeOn-time65%
DeltaCheapest$172Average$424FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$215Average$458FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$257Average$428FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$326Average$473FlexibilityNo cancel feeOn-time71%

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