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Cheap flights from Chicago O'Hare Intl Airport to San Juan from $91

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Chicago O'Hare Intl Airport to San Juan departing on 8/18. 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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Find the cheapest flights from Chicago O'Hare Intl Airport to San Juan

Cheap round-trip flights

Spirit Airlines Logo
6:23 pm - 12:06 amORD-SJU
4h 43mnonstop
Spirit Airlines Logo
10:16 pm - 9:22 amSJU-ORD
12h 06m1 stop
$189Spirit Airlines
Find Deal
Mon, Aug 11 - Fri, Aug 15
Spirit Airlines Logo
12:55 pm - 6:34 pmORD-SJU
4h 39mnonstop
Spirit Airlines Logo
7:40 pm - 11:56 pmSJU-ORD
5h 16mnonstop
$190Spirit Airlines
Find Deal
Thu, Sep 25 - Mon, Sep 29
Spirit Airlines Logo
6:55 am - 1:33 pmORD-SJU
4h 38mnonstop
Spirit Airlines Logo
2:38 pm - 6:00 pmSJU-ORD
5h 22mnonstop
$191Spirit Airlines
Find Deal
Thu, Nov 6 - Thu, Nov 13
Spirit Airlines Logo
4:36 pm - 1:35 amORD-SJU
7h 59m1 stop
Spirit Airlines Logo
10:16 pm - 9:22 amSJU-ORD
12h 06m1 stop
$192Spirit Airlines
Find Deal
Mon, Aug 11 - Fri, Aug 15
Spirit Airlines Logo
4:36 pm - 1:35 amORD-SJU
7h 59m1 stop
Spirit Airlines Logo
8:00 pm - 9:22 amSJU-ORD
14h 22m1 stop
$194Spirit Airlines
Find Deal
Mon, Aug 11 - Thu, Aug 14
Spirit Airlines Logo
4:36 pm - 1:35 amORD-SJU
7h 59m1 stop
Spirit Airlines Logo
10:16 pm - 9:22 amSJU-ORD
12h 06m1 stop
$195Spirit Airlines
Find Deal
Mon, Aug 11 - Fri, Aug 15
Spirit Airlines Logo
4:36 pm - 1:35 amORD-SJU
7h 59m1 stop
Spirit Airlines Logo
8:00 pm - 9:22 amSJU-ORD
14h 22m1 stop
$200Spirit Airlines
Find Deal
Mon, Aug 11 - Thu, Aug 14
Spirit Airlines Logo
12:55 pm - 6:34 pmORD-SJU
4h 39mnonstop
Spirit Airlines Logo
11:59 am - 5:39 pmSJU-ORD
6h 40m1 stop
$202Spirit Airlines
Find Deal
Mon, Sep 22 - Thu, Oct 2
Logo
11:28 am - 2:39 amORD-SJU
14h 11m1 stop
Logo
10:16 pm - 9:22 amSJU-ORD
12h 06m1 stop
$214
Find Deal
Tue, Aug 12 - Fri, Aug 15
Logo
12:55 pm - 6:40 pmORD-SJU
4h 45mnonstop
Logo
3:21 pm - 11:33 pmSJU-ORD
9h 12m1 stop
$219
Find Deal
Mon, Aug 25 - Sat, Aug 30

Spirit Airlines flights from Chicago O'Hare Intl Airport to San Juan Luis Munoz Marin Intl Airport

Our best Spirit Airlines deals on Chicago O'Hare Intl Airport to San Juan Luis Munoz Marin Intl Airport flight tickets
Spirit Airlines
Aug 11
ORD6:23 pmChicago O'Hare Intl
4h 43m
SJU12:06 amSan Juan Luis Munoz Marin Intl
Aug 15
SJU10:16 pmSan Juan Luis Munoz Marin Intl
12h 06m
1 stop
ORD9:22 amChicago O'Hare Intl
$189
Find similar
Spirit Airlines
Sep 25
ORD12:55 pmChicago O'Hare Intl
4h 39m
SJU6:34 pmSan Juan Luis Munoz Marin Intl
Sep 29
SJU7:40 pmSan Juan Luis Munoz Marin Intl
5h 16m
ORD11:56 pmChicago O'Hare Intl
$190
Find similar
Spirit Airlines
Nov 6
ORD6:55 amChicago O'Hare Intl
4h 38m
SJU1:33 pmSan Juan Luis Munoz Marin Intl
Nov 13
SJU2:38 pmSan Juan Luis Munoz Marin Intl
5h 22m
ORD6:00 pmChicago O'Hare Intl
$191
Find similar

Frontier flights from Chicago O'Hare Intl Airport to San Juan Luis Munoz Marin Intl Airport

Our best Frontier deals on Chicago O'Hare Intl Airport to San Juan Luis Munoz Marin Intl Airport flight tickets
Frontier
Aug 9
ORD12:20 pmChicago O'Hare Intl
11h 07m
1 stop
SJU12:27 amSan Juan Luis Munoz Marin Intl
Aug 11
SJU3:34 amSan Juan Luis Munoz Marin Intl
7h 40m
1 stop
ORD10:14 amChicago O'Hare Intl
$258
Find similar
Frontier
Aug 12
ORD11:28 amChicago O'Hare Intl
14h 11m
1 stop
SJU2:39 amSan Juan Luis Munoz Marin Intl
Aug 20
SJU8:13 pmSan Juan Luis Munoz Marin Intl
23h 28m
1 stop
ORD6:41 pmChicago O'Hare Intl
$267
Find similar
Frontier
Aug 11
ORD5:00 pmChicago O'Hare Intl
8h 39m
1 stop
SJU2:39 amSan Juan Luis Munoz Marin Intl
Aug 16
SJU4:54 pmSan Juan Luis Munoz Marin Intl
24h 44m
1 stop
ORD4:38 pmChicago O'Hare Intl
$268
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Chicago O'Hare Intl Airport 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 July 31, 2025.
Use the filters below to find and compare flights from Chicago O'Hare Intl Airport 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

Mon 8/11

6:23 pm-12:06 am

Nonstop4h 43m

San Juan Luis Munoz Marin Intl

Fri 8/15

10:16 pm-9:22 am

1 stop12h 06m

$189

ChicagoSan Juan

ORD - SJU

ORDSJU

Chicago O'Hare Intl

Thu 9/25

12:55 pm-6:34 pm

Nonstop4h 39m

San Juan Luis Munoz Marin Intl

Mon 9/29

7:40 pm-11:56 pm

Nonstop5h 16m

$190

ChicagoSan Juan

ORD - SJU

ORDSJU

Chicago O'Hare Intl

Thu 11/6

6:55 am-1:33 pm

Nonstop4h 38m

San Juan Luis Munoz Marin Intl

Thu 11/13

2:38 pm-6:00 pm

Nonstop5h 22m

$191

ChicagoSan Juan

ORD - SJU

ORDSJU

Chicago O'Hare Intl

Mon 8/11

4:36 pm-1:35 am

1 stop7h 59m

San Juan Luis Munoz Marin Intl

Fri 8/15

10:16 pm-9:22 am

1 stop12h 06m

$192

ChicagoSan Juan

ORD - SJU

ORDSJU

Chicago O'Hare Intl

Mon 8/11

4:36 pm-1:35 am

1 stop7h 59m

San Juan Luis Munoz Marin Intl

Thu 8/14

8:00 pm-9:22 am

1 stop14h 22m

$194

ChicagoSan Juan

ORD - SJU

ORDSJU

Chicago O'Hare Intl

Mon 8/11

4:36 pm-1:35 am

1 stop7h 59m

San Juan Luis Munoz Marin Intl

Fri 8/15

10:16 pm-9:22 am

1 stop12h 06m

$195

ChicagoSan Juan

ORD - SJU

ORDSJU

Chicago O'Hare Intl

Mon 8/11

4:36 pm-1:35 am

1 stop7h 59m

San Juan Luis Munoz Marin Intl

Thu 8/14

8:00 pm-9:22 am

1 stop14h 22m

$200

ChicagoSan Juan

ORD - SJU

ORDSJU

Chicago O'Hare Intl

Mon 9/22

12:55 pm-6:34 pm

Nonstop4h 39m

San Juan Luis Munoz Marin Intl

Thu 10/2

11:59 am-5:39 pm

1 stop6h 40m

$202

ChicagoSan Juan

ORD - SJU

ORDSJU

Chicago O'Hare Intl

Tue 8/12

11:28 am-2:39 am

1 stop14h 11m

San Juan Luis Munoz Marin Intl

Fri 8/15

10:16 pm-9:22 am

1 stop12h 06m

$214

ChicagoSan Juan

ORD - SJU

ORDSJU

Chicago O'Hare Intl

Mon 8/25

12:55 pm-6:40 pm

Nonstop4h 45m

San Juan Luis Munoz Marin Intl

Sat 8/30

3:21 pm-11:33 pm

1 stop9h 12m

$219

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to San Juan from

How to get the cheapest flight ticket from Chicago O'Hare Intl Airport 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 September, then flying in August is also cheap. Prices for this month can be found on momondo for an average of $318.

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 Chicago O'Hare Intl Airport is on a Monday. momondo users have found tickets for Monday departures for as low as $395. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Sunday is the most expensive day to depart from Chicago O'Hare Intl Airport because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $449.

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 $303. Flights in the morning are often more expensive with an average ticket price of $444.

What is the cheapest Chicago O'Hare Intl 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 Chicago O'Hare Intl - 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 Chicago O'Hare Intl Airport 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 $375 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 Chicago O'Hare Intl Airport for as low as $302 on momondo.

What cabin class options are available on Chicago O'Hare Intl to San Juan Luis Munoz Marin Intl flights?

There are 4 cabin classes available to choose from on Chicago O'Hare Intl 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 Chicago O'Hare Intl Airport 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 Chicago O'Hare Intl Airport to San Juan Luis Munoz Marin Intl Airport flight.

How have Chicago O'Hare Intl Airport to San Juan Luis Munoz Marin Intl Airport flight prices changed over time?

As of July 2025, prices for Chicago O'Hare Intl Airport to San Juan Luis Munoz Marin Intl Airport flights are approximately 2% cheaper when compared to flights at the same time last year.

When to book flights from Chicago O'Hare Intl Airport to San Juan Luis Munoz Marin Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Chicago O'Hare Intl Airport to San Juan Luis Munoz Marin Intl Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Chicago O'Hare Intl Airport to San Juan Luis Munoz Marin Intl Airport (ORD to SJU) flight deals and tips

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

Best Price Found

$91

Fastest flight time

4h 38m

Direct flights

Every day
The best one-way flight to San Juan Luis Munoz Marin Intl Airport from Chicago O'Hare Intl Airport in the past 72 hours is $91. The best round-trip flight deal from Chicago O'Hare Intl Airport to San Juan Luis Munoz Marin Intl Airport found on momondo in the last 72 hours is $189.
The fastest flight from Chicago O'Hare Intl Airport to San Juan Luis Munoz Marin Intl Airport takes 4h 38m
Direct flights go from Chicago O'Hare Intl Airport to San Juan Luis Munoz Marin Intl Airport every day.
Search flight deals

  • How far is Chicago O'Hare Intl to San Juan Luis Munoz Marin Intl by plane?

    The distance between Chicago O'Hare Intl and San Juan Luis Munoz Marin Intl is about 2072.5 mi. 4h 38m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Chicago O'Hare Intl Airport to San Juan Luis Munoz Marin Intl Airport?

    Prices for flights from Chicago O'Hare Intl Airport to San Juan Luis Munoz Marin Intl Airport refresh daily.

  • How many operators does momondo search for flights from Chicago O'Hare Intl Airport to San Juan Luis Munoz Marin Intl Airport?

  • How old do you have to be to fly from Chicago O'Hare Intl Airport to San Juan Luis Munoz Marin Intl Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Chicago O'Hare Intl Airport 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 travel and health documents required for your trip to San Juan Luis Munoz Marin Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at San Juan Luis Munoz Marin Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular plane model from Chicago O'Hare Intl Airport to San Juan Luis Munoz Marin Intl Airport?

  • What is the most popular airline from Chicago O'Hare Intl Airport to San Juan Luis Munoz Marin Intl Airport?

Best airlines flying from Chicago O'Hare Intl Airport to San Juan Luis Munoz Marin Intl Airport

Compare and see reviews for airlines that fly from Chicago O'Hare Intl Airport to San Juan Luis Munoz Marin Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $106Free CancellationRating
5.9
3,239 reviews
Search Frontier flights
Spirit AirlinesPriceFrom $139Free CancellationRating
6.3
8,049 reviews
Search Spirit Airlines flights
DeltaPriceFrom $190Free CancellationRating
8.0
7,981 reviews
Search Delta flights
United AirlinesPriceFrom $273Free CancellationRating
7.4
8,900 reviews
Search United Airlines flights
JetBluePriceFrom $287Free CancellationRating
7.2
2,914 reviews
Search JetBlue flights
American AirlinesPriceFrom $346Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
SouthwestPriceFrom $389Free CancellationRating
8.0
4,246 reviews
Search Southwest flights

  • United Airlines Flights From Chicago O'Hare Intl Airport to San Juan Luis Munoz Marin Intl Airport

    United Airlines flies from Chicago O'Hare Intl Airport to San Juan Luis Munoz Marin Intl Airport around 14 times per week, with 8,900 momondo users rating the airline 7.4/10. The cheapest United Airlines deal from Chicago O'Hare Intl Airport to San Juan Luis Munoz Marin Intl Airport in the last 72 hours was $273 (round-trip), much lower than the average airfare cost of $530 for United Airlines flights on this route.

  • American Airlines Flights From Chicago O'Hare Intl Airport to San Juan Luis Munoz Marin Intl Airport

    American Airlines (7.2/10 from 10,000 reviews) operates around 3 flights from Chicago O'Hare Intl Airport to San Juan Luis Munoz Marin Intl Airport in any given week. The average American Airlines airfare for this route is around $516, with deals from around $346 rare but found on momondo. Referenced prices are for round-trip Chicago O'Hare Intl Airport to San Juan Luis Munoz Marin Intl Airport flight searches in the last 72 hours.

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 Chicago to San Juan?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to San Juan from Chicago.

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

Flights from Chicago 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 Chicago to San Juan?

momondo helps you find the best flight between Chicago and San Juan by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Yes. momondo can track prices for Chicago to San Juan flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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