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 Delta ($103), American Airlines ($108), and Spirit Airlines ($115).

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.

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).

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

The most popular route from Illinois to San Juan Luis Munoz Marin Intl Airport is Chicago O'Hare Intl - San Juan Luis Munoz Marin Intl. You may also consider Chicago Midway - San Juan Luis Munoz Marin Intl or Lambert-St Louis - San Juan Luis Munoz Marin Intl.

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

On average you can expect to pay $575 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 $180.

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

Consider Air Canada (83%), United Airlines (83%) or Air New Zealand (83%) 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 most popular airlines that fly from Illinois to San Juan Luis Munoz Marin Intl Airport?

The most popular airlines flying from Illinois to San Juan Luis Munoz Marin Intl Airport are American Airlines, JetBlue and Delta. Something to consider prior to booking your flight.

How far in advance should I book a flight from Illinois to San Juan Luis Munoz Marin Intl Airport?

Users have found that booking a flight from Illinois to San Juan Luis Munoz Marin Intl Airport at least 43 days early can save you up to 33% on average compared to booking a flight this week. If booking 43 days before your flight isn’t an option for you, users have found flights from Illinois to San Juan Luis Munoz Marin Intl Airport for as little as $289 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as $325 for flights departing within the next 3 days.

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

Our data shows that September tends to be the cheapest month to fly to San Juan Luis Munoz Marin Intl Airport from Illinois. Users have commonly found prices around $380 for the month, but tickets can be as low as $138. Due to multiple factors, prepare for potentially higher prices in December.

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.

$103+ Flights from Illinois to San Juan Luis Munoz Marin Intl Airport

Q: How much does it cost to fly round-trip from Illinois to San Juan Luis Munoz Marin Intl Airport?

Airfare is below average for this route at the moment. Illinois to San Juan Luis Munoz Marin Intl Airport flights typically cost between $236 and $481 in August. The cheapest round-trip price found within the last 3 days was $227 on Multiple Airlines (Aug 30-Sep 5).

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Cheap flight deals from Illinois to Luis Munoz Marin Intl

Round-trip from	$205 (Southwest)
One-way from	$103 (Delta)
Popular in	December
Cheapest in	September
Average price	$377
Good round-trip deal	$280 or less
Good one-way deal	$150 or less

From Illinois to San Juan Luis Munoz Marin Intl

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One-way flight from Illinois to San Juan Luis Munoz Marin Intl

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Highest demand for flights based on searches. 12% potential increase in price ($54 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease ($17 potential savings vs. average RT price).

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Average for round-trip flights in July 2025

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Price to beat on a round-trip flight from Illinois to San Juan Luis Munoz Marin Intl.

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Price to beat on a one-way flight from Illinois to San Juan Luis Munoz Marin Intl.

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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 July 30, 2025.

Tue 10/213:25 pmSTL - SJU

1 stop7h 25mSouthwest

Sat 10/255:45 amSJU - STL

1 stop12h 20mSouthwest

Deal found 7/30

$205

Sun 10/196:00 amMLI - SJU

2 stops16h 54mAmerican Airlines

Thu 10/233:00 pmSJU - MLI

1 stop9h 50mAmerican Airlines

Deal found 7/30

$215

Tue 12/27:36 pmPIA - SJU

2 stops15h 49mAmerican Airlines

Tue 12/94:15 pmSJU - PIA

1 stop7h 12mAmerican Airlines

Deal found 7/29

$215

Sat 8/308:47 pmORD - SJU

1 stop17h 20mMultiple Airlines

Fri 9/53:39 amSJU - ORD

1 stop12h 38mMultiple Airlines

Deal found 7/29

$227

Sat 9/66:44 pmORD - SJU

1 stop15h 20mSpirit Airlines

Sat 9/133:19 pmSJU - ORD

1 stop7h 39mSpirit Airlines

Deal found 7/29

$228

Sat 8/3010:51 amMDW - SJU

1 stop7h 27mFrontier

Fri 9/53:39 amSJU - MDW

1 stop7h 12mFrontier

Deal found 7/29

$235

Wed 8/135:40 pmSTL - SJU

1 stop14h 24mFrontier

Sat 8/169:30 pmSJU - STL

1 stop27h 17mFrontier

Deal found 7/29

$239

Fri 9/191:57 pmSTL - SJU

1 stop11h 37mMultiple Airlines

Wed 9/241:59 amSJU - STL

2 stops9h 51mMultiple Airlines

Deal found 7/29

$247

Sun 8/242:30 pmSTL - SJU

2 stops9h 26mSpirit Airlines

Thu 8/282:11 amSJU - STL

2 stops12h 21mSpirit Airlines

Deal found 7/29

$249

Sat 11/156:00 amORD - SJU

1 stop7h 15mFrontier

Wed 11/194:42 pmSJU - ORD

1 stop26h 31mFrontier

Deal found 7/28

$251

Tue 12/96:00 amSTL - SJU

1 stop6h 15mDelta

Fri 12/123:25 pmSJU - STL

1 stop7h 10mDelta

Deal found 7/30

$255

Fri 10/3112:03 pmEVV - SJU

2 stops10h 56mAmerican Airlines

Tue 11/45:59 pmSJU - EVV

1 stop6h 52mAmerican Airlines

Deal found 7/28

$271

Best flights from Illinois to Luis Munoz Marin Intl
Discover carefully curated flight deals from Illinois to Luis Munoz Marin Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 30, 2025.

Tue 10/213:25 pmSTL - SJU

1 stop7h 25mSouthwest

Sat 10/255:45 amSJU - STL

1 stop12h 20mSouthwest

Deal found 7/30

$205

Sun 10/196:00 amMLI - SJU

2 stops16h 54mAmerican Airlines

Thu 10/233:00 pmSJU - MLI

1 stop9h 50mAmerican Airlines

Deal found 7/30

$215

Mon 9/151:26 pmSTL - SJU

1 stop7h 34mDelta

Fri 9/1912:58 pmSJU - STL

1 stop11h 26mDelta

Deal found 7/30

$215

Sat 8/308:47 pmORD - SJU

1 stop17h 20mMultiple Airlines

Fri 9/53:39 amSJU - ORD

1 stop12h 38mMultiple Airlines

Deal found 7/29

$227

Sat 9/66:44 pmORD - SJU

1 stop15h 20mSpirit Airlines

Sat 9/133:19 pmSJU - ORD

1 stop7h 39mSpirit Airlines

Deal found 7/29

$228

Sat 8/3010:51 amMDW - SJU

1 stop7h 27mFrontier

Fri 9/53:39 amSJU - MDW

1 stop7h 12mFrontier

Deal found 7/29

$235

Tue 9/1611:05 amSTL - SJU

1 stop8h 33mUnited Airlines

Fri 9/191:05 amSJU - STL

2 stops14h 14mUnited Airlines

Deal found 7/30

$295

Tue 12/27:36 pmPIA - SJU

2 stops15h 49mAmerican Airlines

Tue 12/94:15 pmSJU - PIA

1 stop7h 12mAmerican Airlines

Deal found 7/29

$215

Wed 8/135:40 pmSTL - SJU

1 stop14h 24mFrontier

Sat 8/169:30 pmSJU - STL

1 stop27h 17mFrontier

Deal found 7/29

$239

Fri 9/191:57 pmSTL - SJU

1 stop11h 37mMultiple Airlines

Wed 9/241:59 amSJU - STL

2 stops9h 51mMultiple Airlines

Deal found 7/29

$247

Sun 8/242:30 pmSTL - SJU

2 stops9h 26mSpirit Airlines

Thu 8/282:11 amSJU - STL

2 stops12h 21mSpirit Airlines

Deal found 7/29

$249

Sat 8/307:46 pmORD - SJU

1 stop12h 13mFrontier

Sat 9/612:28 amSJU - ORD

1 stop12h 30mFrontier

Deal found 7/30

$258

Last-minute flights from Illinois to Luis Munoz Marin Intl
Discover last-minute flight deals from Illinois to Luis Munoz Marin Intl. Data last updated July 30, 2025 and is based on user searches.

Mon 8/41:11 pmMDW - SJU

2 stops11h 24mMultiple Airlines

Thu 8/72:40 amSJU - MDW

2 stops12h 16mMultiple Airlines

Deal found 7/28

$591

Tue 8/57:25 amMDW - SJU

2 stops9h 00mSouthwest

Wed 8/131:35 pmSJU - MDW

1 stop7h 05mSouthwest

Deal found 7/29

$539

Thu 8/76:23 pmORD - SJU

Nonstop4h 43mSpirit Airlines

Fri 8/1510:16 pmSJU - ORD

1 stop12h 06mSpirit Airlines

Deal found 7/28

$230

Fri 8/85:40 pmSTL - SJU

1 stop14h 19mFrontier

Wed 8/139:30 amSJU - STL

1 stop15h 17mFrontier

Deal found 7/30

$259

Fri 8/810:47 amSTL - SJU

2 stops13h 48mMultiple Airlines

Wed 8/139:30 amSJU - STL

1 stop15h 17mMultiple Airlines

Deal found 7/30

$334

Fri 8/810:47 amSTL - SJU

1 stop23h 45mSpirit Airlines

Sun 8/174:12 pmSJU - STL

1 stop22h 20mSpirit Airlines

Deal found 7/29

$367

Sat 8/96:23 pmORD - SJU

Nonstop4h 43mMultiple Airlines

Sat 8/236:55 pmSJU - ORD

1 stop19h 10mMultiple Airlines

Deal found 7/29

$233

Sat 8/99:12 pmMDW - SJU

1 stop10h 52mFrontier

Sat 8/1612:08 pmSJU - MDW

1 stop9h 14mFrontier

Deal found 7/30

$238

Sat 8/912:20 pmORD - SJU

1 stop11h 07mFrontier

Mon 8/113:34 amSJU - ORD

1 stop7h 40mFrontier

Deal found 7/29

$259

Wed 8/135:40 pmSTL - SJU

1 stop14h 24mFrontier

Sat 8/169:30 pmSJU - STL

1 stop27h 17mFrontier

Deal found 7/29

$239

Thu 8/145:00 amPIA - SJU

1 stop16h 56mAmerican Airlines

Fri 8/2212:00 pmSJU - PIA

2 stops12h 16mAmerican Airlines

Deal found 7/30

$297

Sat 8/166:56 amORD - SJU

1 stop16h 01mSpirit Airlines

Mon 8/187:40 pmSJU - ORD

Nonstop5h 03mSpirit Airlines

Deal found 7/30

$229

One-way flights from Illinois to Luis Munoz Marin Intl
Search for one-way flight options from Illinois to Luis Munoz Marin Intl. Find affordable one-way fares based on user searches. Data last updated July 30, 2025.

Sat 10/2512:25 pmSTL - SJU

2 stops10h 32mUnited Airlines

Deal found 7/28

$103

Sat 8/237:04 amMLI - SJU

1 stop14h 52mAmerican Airlines

Deal found 7/29

$108

Sun 8/3110:20 amSTL - SJU

1 stop10h 47mDelta

Deal found 7/30

$108

Tue 8/125:05 amORD - SJU

1 stop9h 25mSpirit Airlines

Deal found 7/29

$115

Sat 8/2310:51 amMDW - SJU

1 stop7h 27mFrontier

Deal found 7/29

$117

Sat 8/912:20 pmORD - SJU

1 stop11h 07mFrontier

Deal found 7/30

$119

Sat 8/95:40 pmSTL - SJU

1 stop7h 59mFrontier

Deal found 7/30

$119

Sun 8/312:30 pmSTL - SJU

2 stops9h 26mSpirit Airlines

Deal found 7/29

$120

Tue 9/911:13 amORD - SJU

1 stop13h 45mMultiple Airlines

Deal found 7/29

$133

Sun 9/286:05 amSTL - SJU

2 stops9h 15mAmerican Airlines

Deal found 7/29

$133

Mon 9/2212:50 pmMDW - SJU

3 stops24h 21mMultiple Airlines

Deal found 7/30

$157

Sat 9/612:30 pmSTL - SJU

1 stop9h 10mSouthwest

Deal found 7/28

$158

Cheapflights Fare Finder

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

Fly to

Route

Depart

Return

Price

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Tue 10/21

3:25 pm-11:50 pm

1 stop7h 25m

San Juan Luis Munoz Marin Intl

Sat 10/25

5:45 am-5:05 pm

1 stop12h 20m

$205

MolineSan Juan

MLI - SJU

MLISJU

Moline Quad-City

Sun 10/19

6:00 am-11:54 pm

2 stops16h 54m

San Juan Luis Munoz Marin Intl

Thu 10/23

3:00 pm-11:50 pm

1 stop9h 50m

$215

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Mon 9/15

1:26 pm-10:00 pm

1 stop7h 34m

San Juan Luis Munoz Marin Intl

Fri 9/19

12:58 pm-11:24 pm

1 stop11h 26m

$215

PeoriaSan Juan

PIA - SJU

PIASJU

Greater Peoria

Tue 12/2

7:36 pm-1:25 pm

2 stops15h 49m

San Juan Luis Munoz Marin Intl

Tue 12/9

4:15 pm-9:27 pm

1 stop7h 12m

$215

ChicagoSan Juan

ORD - SJU

ORDSJU

Chicago O'Hare Intl

Sat 8/30

8:47 pm-3:07 pm

1 stop17h 20m

San Juan Luis Munoz Marin Intl

Fri 9/5

3:39 am-3:17 pm

1 stop12h 38m

$227

ChicagoSan Juan

ORD - SJU

ORDSJU

Chicago O'Hare Intl

Sat 9/6

6:44 pm-11:04 am

1 stop15h 20m

San Juan Luis Munoz Marin Intl

Sat 9/13

3:19 pm-9:58 pm

1 stop7h 39m

$228

ChicagoSan Juan

MDW - SJU

MDWSJU

Chicago Midway

Sat 8/30

10:51 am-7:18 pm

1 stop7h 27m

San Juan Luis Munoz Marin Intl

Fri 9/5

3:39 am-9:51 am

1 stop7h 12m

$235

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Wed 8/13

5:40 pm-9:04 am

1 stop14h 24m

San Juan Luis Munoz Marin Intl

Sat 8/16

9:30 pm-11:47 pm

1 stop27h 17m

$239

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Fri 9/19

1:57 pm-2:34 am

1 stop11h 37m

San Juan Luis Munoz Marin Intl

Wed 9/24

1:59 am-10:50 am

2 stops9h 51m

$247

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

Sun 8/24

2:30 pm-12:56 am

2 stops9h 26m

San Juan Luis Munoz Marin Intl

Thu 8/28

2:11 am-1:32 pm

2 stops12h 21m

$249

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

Showing 1-10 of 41 results

...

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 June is currently the most expensive (average of $339). 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?

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

The most flights from USIL to SJU are scheduled on a Monday (9 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (7 on average).

How much does it cost to fly round-trip from Illinois to San Juan Luis Munoz Marin Intl Airport?

Reviews of airlines servicing Luis Munoz Marin Intl

Get a feel of what it's like to fly with Southwest, Delta, and United Airlines from Illinois to San Juan Luis Munoz Marin Intl Airport by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Southwest

8.0

Very good

4,241 reviews

Reviews

1 / 20

8.0

Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.

Southwest

8.0

Very good

4,241 reviews

Southwest

8.0

Very good

4,241 reviews

Reviews

1 / 20

8.0

Excellent

Gina,Jul 2025

LAS - DEN

Delta

8.0

Very good

7,980 reviews

Southwest

8.0

Very good

4,241 reviews

Reviews

1 / 20

8.0

Excellent

Gina,Jul 2025

LAS - DEN

United Airlines

7.4

Good

8,896 reviews

Southwest

8.0

Very good

4,241 reviews

Reviews

1 / 20

8.0

Excellent

Gina,Jul 2025

LAS - DEN

American Airlines

7.2

Good

10,000 reviews

Southwest

8.0

Very good

4,241 reviews

Reviews

1 / 20

8.0

Excellent

Gina,Jul 2025

LAS - DEN

Spirit Airlines

6.3

Okay

8,048 reviews

Southwest

8.0

Very good

4,241 reviews

Reviews

1 / 20

8.0

Excellent

Gina,Jul 2025

LAS - DEN

Related info for your journey

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 Delta ($103), American Airlines ($108), and Spirit Airlines ($115).
What are the most popular routes from Illinois to San Juan Luis Munoz Marin Intl Airport?
The most popular route from Illinois to San Juan Luis Munoz Marin Intl Airport is Chicago O'Hare Intl - San Juan Luis Munoz Marin Intl. You may also consider Chicago Midway - San Juan Luis Munoz Marin Intl or Lambert-St Louis - San Juan Luis Munoz Marin Intl.
What are the most reliable airlines from Illinois to San Juan Luis Munoz Marin Intl Airport?
Consider Air Canada (83%), United Airlines (83%) or Air New Zealand (83%) 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 $575 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 $180.
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 June is currently the most expensive (average of $339). 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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Fajardo

Rio Grande

Luquillo

Humacao

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Top 7 airlines flying from Illinois to Luis Munoz Marin Intl

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$106	Average$271	FlexibilityNo cancel fee	On-time62%
Spirit Airlines	Cheapest$139	Average$333	FlexibilityNo cancel fee	On-time65%
Delta	Cheapest$190	Average$426	FlexibilityNo cancel fee	On-timeN/A
American Airlines	Cheapest$194	Average$566	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$273	Average$508	FlexibilityNo cancel fee	On-time69%
JetBlue	Cheapest$287	Average$418	FlexibilityNo cancel fee	On-time62%
Southwest	Cheapest$352	Average$485	FlexibilityNo cancel fee	On-time63%

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$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 10/25. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Illinois to Luis Munoz Marin Intl with Cheapflights

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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 July 30, 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find flight deals from Illinois to Luis Munoz Marin Intl

Cheapest flights from Illinois to Luis Munoz Marin IntlExplore 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 July 30, 2025.

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 July 30, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Illinois to San Juan Luis Munoz Marin Intl Airport that are best for you.

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.

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?

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 July 30, 2025.

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

How much does it cost to fly round-trip from Illinois to San Juan Luis Munoz Marin Intl Airport?

Reviews of airlines servicing Luis Munoz Marin Intl

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?

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?

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

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

How can I 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?

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

Traveling to a place near San Juan Luis Munoz Marin Intl Airport?

Browse thousands of different options on Cheapflights for your next trip

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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

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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 July 30, 2025.