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Cheap flights from Illinois to San Juan from $103

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to San Juan departing on 11/17. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
7:43 pm - 10:56 amORD-SJU
14h 13m1 stop
Multiple Airlines Logo
5:51 pm - 12:45 pmSJU-ORD
19h 54m1 stop
$194Multiple Airlines
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sáb., oct. 25 - mié., oct. 29
Spirit Airlines Logo
3:00 pm - 8:40 pmORD-SJU
4h 40mnonstop
Spirit Airlines Logo
7:43 pm - 11:57 pmSJU-ORD
5h 14mnonstop
$199Spirit Airlines
Find Deal
sáb., oct. 11 - vie., oct. 24
United Airlines Logo
11:05 am - 8:00 pmSTL-SJU
7h 55m1 stop
United Airlines Logo
8:10 am - 3:47 pmSJU-STL
9h 37m1 stop
$225United Airlines
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mar., oct. 28 - mar., nov. 4
Frontier Logo
5:56 pm - 3:24 pmMDW-SJU
20h 28m1 stop
Frontier Logo
9:00 am - 11:25 pmSJU-MDW
15h 25m1 stop
$234Frontier
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jue., oct. 23 - mar., oct. 28
United Airlines Logo
1:24 pm - 6:11 amPIA-SJU
14h 47m2 stops
United Airlines Logo
2:05 am - 12:38 pmSJU-PIA
12h 33m2 stops
$235United Airlines
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sáb., ene. 31 - mar., feb. 10
American Airlines Logo
3:11 pm - 10:48 amBMI-SJU
17h 37m2 stops
American Airlines Logo
6:00 am - 10:16 pmSJU-BMI
18h 16m2 stops
$235American Airlines
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lun., ene. 26 - sáb., ene. 31
Frontier Logo
2:05 pm - 8:45 amMDW-SJU
16h 40m1 stop
Frontier Logo
9:00 am - 11:55 pmSJU-MDW
16h 55m1 stop
$240Frontier
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sáb., nov. 15 - mar., nov. 18
Delta Logo
1:05 pm - 11:49 pmMDW-SJU
8h 44m1 stop
Delta Logo
7:30 am - 4:25 pmSJU-MDW
10h 55m1 stop
$263Delta
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lun., ene. 19 - vie., ene. 23
American Airlines Logo
4:03 pm - 2:59 pmBMI-SJU
20h 56m2 stops
American Airlines Logo
6:00 am - 8:41 pmSJU-BMI
16h 41m1 stop
$268American Airlines
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sáb., ene. 31 - mié., feb. 11
Delta Logo
1:30 pm - 9:59 pmSTL-SJU
7h 29m1 stop
Delta Logo
1:57 pm - 9:58 pmSJU-STL
10h 01m1 stop
$295Delta
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jue., oct. 30 - mié., nov. 12

United Airlines flights from Illinois to San Juan Luis Munoz Marin Intl Airport

Our best United Airlines deals on Illinois to San Juan Luis Munoz Marin Intl Airport flight tickets
United Airlines
Oct 28
STL11:05 amLambert-St Louis
7h 55m
1 stop
SJU8:00 pmSan Juan Luis Munoz Marin Intl
Nov 4
SJU8:10 amSan Juan Luis Munoz Marin Intl
9h 37m
1 stop
STL3:47 pmLambert-St Louis
$225
Find similar
United Airlines
Jan 31
PIA1:24 pmGreater Peoria
14h 47m
2 stops
SJU6:11 amSan Juan Luis Munoz Marin Intl
Feb 10
SJU2:05 amSan Juan Luis Munoz Marin Intl
12h 33m
2 stops
PIA12:38 pmGreater Peoria
$235
Find similar
United Airlines
Jan 31
PIA1:24 pmGreater Peoria
14h 47m
2 stops
SJU6:11 amSan Juan Luis Munoz Marin Intl
Feb 11
SJU8:35 amSan Juan Luis Munoz Marin Intl
10h 08m
1 stop
PIA4:43 pmGreater Peoria
$263
Find similar

Frontier flights from Illinois to San Juan Luis Munoz Marin Intl Airport

Our best Frontier deals on Illinois to San Juan Luis Munoz Marin Intl Airport flight tickets
Frontier
Oct 23
MDW5:56 pmChicago Midway
20h 28m
1 stop
SJU3:24 pmSan Juan Luis Munoz Marin Intl
Oct 28
SJU9:00 amSan Juan Luis Munoz Marin Intl
15h 25m
1 stop
MDW11:25 pmChicago Midway
$234
Find similar
Frontier
Nov 15
MDW2:05 pmChicago Midway
16h 40m
1 stop
SJU8:45 amSan Juan Luis Munoz Marin Intl
Nov 18
SJU9:00 amSan Juan Luis Munoz Marin Intl
16h 55m
1 stop
MDW11:55 pmChicago Midway
$240
Find similar
Frontier
Nov 15
MDW2:05 pmChicago Midway
16h 40m
1 stop
SJU8:45 amSan Juan Luis Munoz Marin Intl
Nov 18
SJU9:00 amSan Juan Luis Munoz Marin Intl
16h 55m
1 stop
MDW11:55 pmChicago Midway
$241
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Illinois to San Juan Luis Munoz Marin Intl Airport 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, momondo users made 832,500 searches. Data last updated octubre 1, 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

Fly to

Route

Depart

Return

Price

ChicagoSan Juan

ORD - SJU

ORDSJU

Chicago O'Hare Intl

sáb. 10/25

7:43 pm-10:56 am

1 stop14h 13m

San Juan Luis Munoz Marin Intl

mié. 10/29

5:51 pm-12:45 pm

1 stop19h 54m

$194

ChicagoSan Juan

ORD - SJU

ORDSJU

Chicago O'Hare Intl

sáb. 10/11

3:00 pm-8:40 pm

Nonstop4h 40m

San Juan Luis Munoz Marin Intl

vie. 10/24

7:43 pm-11:57 pm

Nonstop5h 14m

$199

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

mar. 10/28

11:05 am-8:00 pm

1 stop7h 55m

San Juan Luis Munoz Marin Intl

mar. 11/4

8:10 am-3:47 pm

1 stop9h 37m

$225

ChicagoSan Juan

MDW - SJU

MDWSJU

Chicago Midway

jue. 10/23

5:56 pm-3:24 pm

1 stop20h 28m

San Juan Luis Munoz Marin Intl

mar. 10/28

9:00 am-11:25 pm

1 stop15h 25m

$234

PeoriaSan Juan

PIA - SJU

PIASJU

Greater Peoria

sáb. 1/31

1:24 pm-6:11 am

2 stops14h 47m

San Juan Luis Munoz Marin Intl

mar. 2/10

2:05 am-12:38 pm

2 stops12h 33m

$235

BloomingtonSan Juan

BMI - SJU

BMISJU

Bloomington-Normal

lun. 1/26

3:11 pm-10:48 am

2 stops17h 37m

San Juan Luis Munoz Marin Intl

sáb. 1/31

6:00 am-10:16 pm

2 stops18h 16m

$235

ChicagoSan Juan

MDW - SJU

MDWSJU

Chicago Midway

sáb. 11/15

2:05 pm-8:45 am

1 stop16h 40m

San Juan Luis Munoz Marin Intl

mar. 11/18

9:00 am-11:55 pm

1 stop16h 55m

$240

ChicagoSan Juan

MDW - SJU

MDWSJU

Chicago Midway

lun. 1/19

1:05 pm-11:49 pm

1 stop8h 44m

San Juan Luis Munoz Marin Intl

vie. 1/23

7:30 am-4:25 pm

1 stop10h 55m

$263

BloomingtonSan Juan

BMI - SJU

BMISJU

Bloomington-Normal

sáb. 1/31

4:03 pm-2:59 pm

2 stops20h 56m

San Juan Luis Munoz Marin Intl

mié. 2/11

6:00 am-8:41 pm

1 stop16h 41m

$268

St. LouisSan Juan

STL - SJU

STLSJU

Lambert-St Louis

jue. 10/30

1:30 pm-9:59 pm

1 stop7h 29m

San Juan Luis Munoz Marin Intl

mié. 11/12

1:57 pm-9:58 pm

1 stop10h 01m

$295

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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How to get the cheapest flight ticket from Illinois to San Juan Luis Munoz Marin Intl Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

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

If you aren’t able to travel to San Juan Luis Munoz Marin Intl Airport during the month of October, then flying in April is also cheap. Prices for this month can be found on momondo for an average of $357.

What is the cheapest day to depart on your flight to San Juan Luis Munoz Marin Intl Airport?

On average, the least expensive day to fly to San Juan Luis Munoz Marin Intl Airport from Illinois is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $393. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Thursday is the most expensive day to depart from Illinois because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $445.

What is the cheapest time of day to depart on your flight to San Juan Luis Munoz Marin Intl Airport?

The cheapest time of day to fly to San Juan Luis Munoz Marin Intl Airport is in the evening when flights can be purchased for as low as $305. Flights in the morning are often more expensive with an average ticket price of $447.

What is the cheapest Illinois to San Juan Luis Munoz Marin Intl flight route?

Fly from Chicago O'Hare Intl to San Juan Luis Munoz Marin Intl for the best Illinois - San Juan Luis Munoz Marin Intl flight prices

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

You are more likely to see cheaper flights to San Juan Luis Munoz Marin Intl Airport from Illinois when booking weeks ahead of your departure date. In general, you can expect to find flights to San Juan Luis Munoz Marin Intl Airport for around $390 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Juan Luis Munoz Marin Intl Airport from Illinois for as low as $314 on momondo.

What cabin class options are available on Illinois to San Juan Luis Munoz Marin Intl flights?

There are 4 cabin classes available to choose from on Illinois to San Juan Luis Munoz Marin Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Illinois to San Juan Luis Munoz Marin Intl Airport flights?

You could potentially save up to 10% on your flight if you consider stops on a Illinois to San Juan Luis Munoz Marin Intl Airport flight.

Cheap Illinois to San Juan Luis Munoz Marin Intl Airport flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Illinois to San Juan Luis Munoz Marin Intl Airport

Best Price Found

$169

Fastest flight time

4h 15m

Direct flights

Every day
The best one-way flight to San Juan Luis Munoz Marin Intl Airport from Illinois in the past 72 hours is $169. The best round-trip flight deal from Illinois to San Juan Luis Munoz Marin Intl Airport found on momondo in the last 72 hours is $343.
The fastest flight from Illinois to San Juan Luis Munoz Marin Intl Airport takes 4h 15m
Direct flights go from Illinois to San Juan Luis Munoz Marin Intl Airport every day.
Search flight deals

  • When did momondo last update prices for flights from Illinois to San Juan Luis Munoz Marin Intl Airport?

    Prices for flights from Illinois to San Juan Luis Munoz Marin Intl Airport refresh daily.

  • How many operators does momondo search for flights from Illinois to San Juan Luis Munoz Marin Intl Airport?

  • How old do you have to be to fly from Illinois to San Juan Luis Munoz Marin Intl Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Illinois to San Juan Luis Munoz Marin Intl Airport.

  • What documentation or ID do you need to fly to San Juan Luis Munoz Marin Intl Airport?

    The required travel and health documents for your San Juan Luis Munoz Marin Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at San Juan Luis Munoz Marin Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from Illinois to San Juan Luis Munoz Marin Intl Airport?

Best airlines flying from Illinois to San Juan Luis Munoz Marin Intl Airport

Compare and see reviews for airlines that fly from Illinois to San Juan Luis Munoz Marin Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $106Free CancellationRating
5.8
3,154 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $139Free CancellationRating
6.3
8,065 reviews
Search Spirit Airlines flights
American AirlinesPriceFrom $194Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
DeltaPriceFrom $196Free CancellationRating
7.9
7,961 reviews
Search Delta flights
JetBluePriceFrom $271Free CancellationRating
7.2
2,912 reviews
Search JetBlue flights
United AirlinesPriceFrom $273Free CancellationRating
7.4
8,929 reviews
Search United Airlines flights
SouthwestPriceFrom $376Free CancellationRating
8.0
4,248 reviews
Search Southwest flights

Traveling to a place near San Juan?

Book flights to San Juan if you plan to visit one of these locations
Carolina
Fajardo
Dorado
Luquillo
Caguas
Humacao
Rio Grande
Bayamón

Why use momondo?

Why should I use momondo to find a flight deal from Illinois to San Juan?

It is quick and easy to find Illinois to San Juan flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to San Juan that suits you.

Can I find flights from Illinois to San Juan with flexible booking policies on momondo?

Flights from Illinois to San Juan with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Illinois to San Juan?

Once all potential Illinois to San Juan flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Illinois to San Juan right now. Can momondo alert me if prices change?

If you are simply researching potential flights to San Juan, momondo offers a useful price alert feature which will track prices for flights to San Juan from Illinois and alert you when they change.

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