Luis Munoz Marin Intl

$103+ Cheap flights from Illinois to Luis Munoz Marin Intl (SJU)

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 4/29. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SJU
Apr 29 — May 61
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Cheap flight deals from Illinois to Luis Munoz Marin Intl

Keep the following information in mind while searching for Illinois to Luis Munoz Marin Intl flight deals. Data was last updated April 24, 2025.

Round-trip from

$202
(Cheapflightsfares)

One-way from

$103
(FlightHub)

Popular in

December

Cheapest in

August

Average price

$352

Good round-trip deal

$337 or less

Good one-way deal

$186 or less
From Illinois to San Juan Luis Munoz Marin Intl
One-way flight from Illinois to San Juan Luis Munoz Marin Intl
Highest demand for flights based on searches. 15% potential increase in price ($67 potential increase over avg. RT price).
Cheapest flight prices on average. 5% potential price decrease ($19 potential savings vs. average RT price).
Average for round-trip flights in April 2025
Price to beat on a round-trip flight from Illinois to San Juan Luis Munoz Marin Intl.
Price to beat on a one-way flight from Illinois to San Juan Luis Munoz Marin Intl.

Find flight deals from Illinois to Luis Munoz Marin Intl

Cheapest flights from Illinois to Luis Munoz Marin Intl
Explore the most affordable flight options available from Illinois to Luis Munoz Marin Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 24, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 4/22. 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.
Sat 5/107:47 amORD - SJU
1 stop16h 07mSpirit Airlines
Thu 5/151:33 amSJU - ORD
1 stop18h 44mSpirit Airlines
Deal found 4/22$196
This Delta deal was found by Cheapflights users on 4/23. 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.
Mon 9/226:00 amSTL - SJU
1 stop6h 23mDelta
Sat 9/275:19 pmSJU - STL
1 stop7h 20mDelta
Deal found 4/23$209
This United Airlines deal was found by Cheapflights users on 4/22. 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.
Fri 9/196:15 amSTL - SJU
1 stop8h 27mUnited Airlines
Thu 9/252:55 pmSJU - STL
1 stop8h 05mUnited Airlines
Deal found 4/22$229
This Booking.com deal was found by Cheapflights users on 4/23. 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.
Sat 5/104:35 pmORD - SJU
1 stop17h 10mMultiple Airlines
Thu 5/1510:46 amSJU - ORD
1 stop13h 25mMultiple Airlines
Deal found 4/23$238
This Mytrip deal was found by Cheapflights users on 4/24. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/1010:10 amSTL - SJU
1 stop7h 57mSpirit Airlines
Sat 5/178:12 pmSJU - STL
1 stop14h 03mSpirit Airlines
Deal found 4/24$272
This Booking.com deal was found by Cheapflights users on 4/23. 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.
Sat 5/1710:10 amSTL - SJU
1 stop7h 57mMultiple Airlines
Sat 5/179:30 pmSJU - STL
1 stop27h 36mMultiple Airlines
Deal found 4/23$274
This American Airlines deal was found by Cheapflights users on 4/23. 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.
Mon 9/225:31 amSTL - SJU
1 stop6h 14mAmerican Airlines
Sat 9/278:30 amSJU - STL
2 stops12h 53mAmerican Airlines
Deal found 4/23$290
This American Airlines deal was found by Cheapflights users on 4/23. 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.
Sat 9/276:36 pmSPI - SJU
2 stops20h 44mAmerican Airlines
Thu 10/23:58 pmSJU - SPI
2 stops21h 46mAmerican Airlines
Deal found 4/23$292
This Cheapflightsfares deal was found by Cheapflights users on 4/23. 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 5/26:15 amMDW - SJU
1 stop7h 32mFrontier
Thu 5/86:00 amSJU - MDW
1 stop7h 24mFrontier
Deal found 4/23$294
This Frontier deal was found by Cheapflights users on 4/23. 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 5/29:00 amORD - SJU
1 stop8h 47mFrontier
Sun 5/410:46 amSJU - ORD
1 stop13h 25mFrontier
Deal found 4/23$298
This CheapOair deal was found by Cheapflights users on 4/22. 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.
Sat 5/35:45 pmSTL - SJU
1 stop18h 44mFrontier
Fri 5/93:56 amSJU - STL
1 stop21h 10mFrontier
Deal found 4/22$298
This Delta deal was found by Cheapflights users on 4/21. 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.
Sun 8/316:00 amORD - SJU
1 stop9h 50mDelta
Fri 9/122:28 pmSJU - ORD
1 stop10h 25mDelta
Deal found 4/21$307

Cheapflights Fare Finder

Customize your flight search to find flights from Illinois to Luis Munoz Marin Intl 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 24, 2025.
Use the filters below to find and compare flights from Illinois to San Juan Luis Munoz Marin Intl Airport that are best for you.

Fly from

Illinois

Fly to

Luis Munoz Marin Intl

Route

Depart

Return

Price

ChicagoSan Juan

ORD - SJU

ORDSJU

Chicago O'Hare Intl

Sat 5/10

7:47 am-12:54 am

1 stop16h 07m

San Juan Luis Munoz Marin Intl

Thu 5/15

1:33 am-7:17 pm

1 stop18h 44m

$196

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Mon 9/22

6:00 am-1:23 pm

1 stop6h 23m

San Juan Luis Munoz Marin Intl

Sat 9/27

5:19 pm-11:39 pm

1 stop7h 20m

$209

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Fri 9/19

6:15 am-3:42 pm

1 stop8h 27m

San Juan Luis Munoz Marin Intl

Thu 9/25

2:55 pm-10:00 pm

1 stop8h 05m

$229

ChicagoSan Juan

ORD - SJU

ORDSJU

Chicago O'Hare Intl

Sat 5/10

4:35 pm-10:45 am

1 stop17h 10m

San Juan Luis Munoz Marin Intl

Thu 5/15

10:46 am-11:11 pm

1 stop13h 25m

$238

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Sat 5/10

10:10 am-7:07 pm

1 stop7h 57m

San Juan Luis Munoz Marin Intl

Sat 5/17

8:12 pm-9:15 am

1 stop14h 03m

$272

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Sat 5/17

10:10 am-7:07 pm

1 stop7h 57m

San Juan Luis Munoz Marin Intl

Sat 5/17

9:30 pm-12:06 am

1 stop27h 36m

$274

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Mon 9/22

5:31 am-12:45 pm

1 stop6h 14m

San Juan Luis Munoz Marin Intl

Sat 9/27

8:30 am-8:23 pm

2 stops12h 53m

$290

SpringfieldSan Juan

SPI - SJU

SPISJU

Springfield Capital

Sat 9/27

6:36 pm-4:20 pm

2 stops20h 44m

San Juan Luis Munoz Marin Intl

Thu 10/2

3:58 pm-12:44 pm

2 stops21h 46m

$292

ChicagoSan Juan

MDW - SJU

MDWSJU

Chicago Midway

Fri 5/2

6:15 am-2:47 pm

1 stop7h 32m

San Juan Luis Munoz Marin Intl

Thu 5/8

6:00 am-12:24 pm

1 stop7h 24m

$294

ChicagoSan Juan

ORD - SJU

ORDSJU

Chicago O'Hare Intl

Fri 5/2

4:15 pm-12:05 am

1 stop6h 50m

San Juan Luis Munoz Marin Intl

Mon 5/5

6:00 am-6:29 pm

1 stop13h 29m

$298

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/22

Showing 1-10 of 43 results
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Best time to book a flight from Illinois to Luis Munoz Marin Intl

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

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

Currently, September is the cheapest month in which you can book a flight from Illinois to San Juan Luis Munoz Marin Intl Airport (average of $254). Flying from Illinois to San Juan Luis Munoz Marin Intl Airport in December is currently the most expensive (average of $336). 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 IL to SJU?

Find hourly flight availability from Illinois to Luis Munoz Marin Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 24, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Illinois to San Juan Luis Munoz Marin Intl Airport as you normally would.

Weekly flight availability from Illinois to San Juan Luis Munoz Marin Intl Airport

Explore weekly flight availability from Illinois to Luis Munoz Marin Intl. 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 24, 2025.

The most flights from USIL to SJU are scheduled on a Monday (9 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (9 on average).

Rainfall in Luis Munoz Marin Intl by month

Plan your trip to Luis Munoz Marin Intl by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in San Juan Luis Munoz Marin Intl Airport ranges from 2.2 - 6.1 inches per month. November is typically the wettest month, when rainfall can reach 6.1 in. February is typically the driest time to visit San Juan Luis Munoz Marin Intl Airport when rainfall is around 2.2 in.

Temperature in Luis Munoz Marin Intl by month

Plan your trip to Luis Munoz Marin Intl by taking into account the average temperature totals by month.

If weather is an important factor for your trip to San Juan Luis Munoz Marin Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, June is the ideal time of year to visit, when temperatures reach an average of 82.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 77.0 F).

Reviews of airlines servicing Luis Munoz Marin Intl

Get insights into the airlines that provide service to Luis Munoz Marin Intl. 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 Luis Munoz Marin Intl. Reviews last updated April 24, 2025.
See what other customers who have flown with Southwest, Delta and United Airlines from Illinois to San Juan have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Boarding

8.2

Comfort

8.0

Crew

8.6

Entertainment

7.6

Overall

8.0

Food

7.1

Reviews

1 / 20
10.0
Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!

Boarding

8.2

Comfort

8.0

Crew

8.6

Entertainment

7.6

Overall

8.0

Food

7.1

Reviews

1 / 20
10.0
Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!
8.0
Very good

Boarding

8.2

Comfort

8.0

Crew

8.6

Entertainment

7.6

Overall

8.0

Food

7.1

Reviews

1 / 20
10.0
Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!

Boarding

8.2

Comfort

8.0

Crew

8.6

Entertainment

7.6

Overall

8.0

Food

7.1

Reviews

1 / 20
10.0
Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!

Boarding

8.2

Comfort

8.0

Crew

8.6

Entertainment

7.6

Overall

8.0

Food

7.1

Reviews

1 / 20
10.0
Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!

Boarding

8.2

Comfort

8.0

Crew

8.6

Entertainment

7.6

Overall

8.0

Food

7.1

Reviews

1 / 20
10.0
Excellent

Gina,Apr 2025

LAS - DEN

Good, the crew was friendly and helpful. The pilot had great skills in keeping the plane stable through rough turbulence. Smooth landing, too! Thank you!

Related info for your journey

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

    The cheapest airlines for a one-way flight from Illinois to San Juan Luis Munoz Marin Intl Airport are Spirit Airlines ($103), Delta ($105), and American Airlines ($107).

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

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

    Consider United Airlines (88%), American Airlines (83%) or Air Canada (82%) when booking your flight. These represent the most reliable airlines when flying from Illinois to San Juan Luis Munoz Marin Intl Airport.

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

    On average you can expect to pay $805 for a flight from Illinois to San Juan Luis Munoz Marin Intl Airport. The cheapest flight overall is $117 while the most popular route, (Chicago O'Hare Intl - San Juan Luis Munoz Marin Intl) is currently priced at $189.

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

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

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

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

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

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

    Currently, September is the cheapest month in which you can book a flight from Illinois to San Juan Luis Munoz Marin Intl Airport (average of $254). Flying from Illinois to San Juan Luis Munoz Marin Intl Airport in December is currently the most expensive (average of $336). 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

Traveling to a place near Illinois?

Book flights to Illinois if you plan to visit one of these locations
Dorado
Fajardo
Luquillo
Rio Grande
Humacao
Bayamón

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Alternative routes for Illinois to Luis Munoz Marin Intl

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

Top 7 airlines flying from Illinois to Luis Munoz Marin Intl

Discover the top 7 airlines that operate flights from Illinois to Luis Munoz Marin Intl. 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 24, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$124Average$242FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$142Average$287FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$194Average$539FlexibilityNo cancel feeOn-time71%
DeltaCheapest$222Average$427FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$274Average$524FlexibilityNo cancel feeOn-time69%
JetBlueCheapest$293Average$404FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$343Average$479FlexibilityNo cancel feeOn-time63%

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