Luis Munoz Marin Intl

$96+ 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 5/1. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SJU
abr. 8 — abr. 151
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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 abril 3, 2025.

Round-trip from

$174
(Cheapflightsfares)

One-way from

$96
(CheapOair)

Popular in

December

Cheapest in

August

Average price

$312

Good round-trip deal

$297 or less

Good one-way deal

$175 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 ($69 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 abril 3, 2025.

This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 4/138:45 amORD - SJU
1 stop14h 01mSpirit Airlines
vie. 4/189:30 pmSJU - ORD
1 stop11h 34mSpirit Airlines
Deal found 4/2$202
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.
mié. 9/36:36 pmSPI - SJU
2 stops20h 44mAmerican Airlines
mar. 9/93:55 pmSJU - SPI
2 stops21h 49mAmerican Airlines
Deal found 4/1$215
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.
sáb. 4/1211:45 amORD - SJU
1 stop11h 01mMultiple Airlines
jue. 4/175:30 amSJU - ORD
1 stop10h 36mMultiple Airlines
Deal found 4/2$241
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.
sáb. 5/34:15 pmSTL - SJU
1 stop6h 00mDelta
sáb. 5/104:15 pmSJU - STL
1 stop8h 11mDelta
Deal found 4/2$261
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.
mié. 9/104:30 pmMLI - SJU
2 stops19h 15mAmerican Airlines
jue. 9/113:58 pmSJU - MLI
2 stops19h 55mAmerican Airlines
Deal found 4/2$285
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 4/93:00 pmMDW - SJU
1 stop6h 53mFrontier
jue. 4/105:30 amSJU - MDW
1 stop7h 13mFrontier
Deal found 4/2$286
This American Airlines deal was found by Cheapflights users on 4/3. 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.
sáb. 5/35:27 pmSTL - SJU
1 stop10h 33mAmerican Airlines
sáb. 5/175:25 amSJU - STL
1 stop8h 02mAmerican Airlines
Deal found 4/3$286
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.
mié. 4/92:00 pmORD - SJU
1 stop7h 53mFrontier
jue. 4/105:30 amSJU - ORD
1 stop10h 36mFrontier
Deal found 4/2$291
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 4/154:57 pmSTL - SJU
1 stop7h 53mFrontier
vie. 4/182:20 pmSJU - STL
1 stop10h 26mFrontier
Deal found 4/1$296
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 5/39:40 amSTL - SJU
2 stops13h 17mUnited Airlines
vie. 5/91:05 amSJU - STL
2 stops15h 42mUnited Airlines
Deal found 4/2$299
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.
vie. 5/25:55 pmSTL - SJU
1 stop7h 56mMultiple Airlines
mar. 5/69:25 amSJU - STL
1 stop8h 50mMultiple Airlines
Deal found 4/2$305
This JetBlue 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 5/68:45 amORD - SJU
1 stop8h 20mJetBlue
vie. 5/91:58 pmSJU - ORD
1 stop8h 56mJetBlue
Deal found 4/2$324

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 abril 3, 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

dom. 4/13

8:45 am-11:46 pm

1 stop14h 01m

San Juan Luis Munoz Marin Intl

vie. 4/18

9:30 pm-8:04 am

1 stop11h 34m

$202

SpringfieldSan Juan

SPI - SJU

SPISJU

Springfield Capital

mié. 9/3

6:36 pm-4:20 pm

2 stops20h 44m

San Juan Luis Munoz Marin Intl

mar. 9/9

3:55 pm-12:44 pm

2 stops21h 49m

$215

ChicagoSan Juan

ORD - SJU

ORDSJU

Chicago O'Hare Intl

sáb. 4/12

11:45 am-11:46 pm

1 stop11h 01m

San Juan Luis Munoz Marin Intl

mar. 4/15

9:28 am-7:04 pm

1 stop10h 36m

$251

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

sáb. 5/3

4:15 pm-11:15 pm

1 stop6h 00m

San Juan Luis Munoz Marin Intl

mié. 5/7

1:55 pm-8:49 pm

1 stop7h 54m

$261

MolineSan Juan

MLI - SJU

MLISJU

Moline Quad-City

mié. 9/10

4:30 pm-12:45 pm

2 stops19h 15m

San Juan Luis Munoz Marin Intl

jue. 9/11

3:58 pm-10:53 am

2 stops19h 55m

$285

ChicagoSan Juan

MDW - SJU

MDWSJU

Chicago Midway

mié. 4/9

3:00 pm-10:53 pm

1 stop6h 53m

San Juan Luis Munoz Marin Intl

jue. 4/10

5:30 am-11:43 am

1 stop7h 13m

$286

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

sáb. 5/3

5:27 pm-5:00 am

1 stop10h 33m

San Juan Luis Munoz Marin Intl

sáb. 5/17

5:25 am-12:27 pm

1 stop8h 02m

$286

ChicagoSan Juan

ORD - SJU

ORDSJU

Chicago O'Hare Intl

mié. 4/9

2:00 pm-10:53 pm

1 stop7h 53m

San Juan Luis Munoz Marin Intl

jue. 4/10

5:30 am-3:06 pm

1 stop10h 36m

$291

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

mar. 4/15

4:57 pm-1:50 am

1 stop7h 53m

San Juan Luis Munoz Marin Intl

vie. 4/18

2:20 pm-11:46 pm

1 stop10h 26m

$296

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

sáb. 5/3

9:40 am-11:57 pm

2 stops13h 17m

San Juan Luis Munoz Marin Intl

vie. 5/9

1:05 am-3:47 pm

2 stops15h 42m

$299

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/1

Showing 1-10 of 45 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 abril 3, 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 abril 3, 2025.

The most flights from USIL to SJU 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 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 abril 3, 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.

Overall

8.0

Boarding

8.2

Entertainment

7.6

Comfort

8.0

Crew

8.6

Food

7.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Overall

8.0

Boarding

8.2

Entertainment

7.6

Comfort

8.0

Crew

8.6

Food

7.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
8.0
Very good

Overall

8.0

Boarding

8.2

Entertainment

7.6

Comfort

8.0

Crew

8.6

Food

7.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Overall

8.0

Boarding

8.2

Entertainment

7.6

Comfort

8.0

Crew

8.6

Food

7.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Overall

8.0

Boarding

8.2

Entertainment

7.6

Comfort

8.0

Crew

8.6

Food

7.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Overall

8.0

Boarding

8.2

Entertainment

7.6

Comfort

8.0

Crew

8.6

Food

7.1

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

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 ($96), Southwest ($100), and American Airlines ($105).

  • 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%), Air Canada (82%) or Air New Zealand (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 $823 for a flight from Illinois to San Juan Luis Munoz Marin Intl Airport. The cheapest flight overall is $69 while the most popular route, (Chicago O'Hare Intl - San Juan Luis Munoz Marin Intl) is currently priced at $177.

  • 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
Humacao
Rio Grande
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 abril 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$124Average$252FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$144Average$281FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$194Average$549FlexibilityNo cancel feeOn-time71%
DeltaCheapest$235Average$435FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$271Average$525FlexibilityNo cancel feeOn-time69%
JetBlueCheapest$293Average$399FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$342Average$479FlexibilityNo cancel feeOn-time63%

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