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Luis Munoz Marin Intl

$113+ Cheap flights from Milwaukee (MKE) 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 9/16. Fares are subject to change and may not be available on all flights or dates of travel.
MKE — SJU
Jul 8 — Jul 151
Tue 7/8
Tue 7/15
1 adult, Economy
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Cheapflights Tip: The best prices from Milwaukee-Mitchell to San Juan Luis Munoz Marin Intl are usually found in September or October, booked 39 days in advance, depart on a Tuesday or Monday and return on a Thursday

Cheap flight deals from Milwaukee to Luis Munoz Marin Intl

Discover tips and strategies to find the most affordable flight options for your journey from Milwaukee (MKE) to Luis Munoz Marin Intl (SJU). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated July 3, 2025.

Round-trip from

$225
(Delta)

One-way from

$113
(Delta)

Popular in

December

Cheapest in

September

Average price

$479
From Milwaukee-Mitchell to San Juan Luis Munoz Marin Intl
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One-way flight from Milwaukee-Mitchell to San Juan Luis Munoz Marin Intl
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Highest demand for flights based on searches. 8% potential increase in price ($38 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($12 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find flight deals from Milwaukee to Luis Munoz Marin Intl

Cheapest flights from Milwaukee to Luis Munoz Marin Intl
Explore the most affordable flight options available from Milwaukee to Luis Munoz Marin Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 3, 2025.

This Delta deal was found by Cheapflights users on 7/2. 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.
Tue 9/167:05 amMKE - SJU
1 stop8h 26mDelta
Tue 9/235:41 pmSJU - MKE
1 stop7h 07mDelta
Deal found 7/2$225
This Southwest deal was found by Cheapflights users on 7/3. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/226:00 amMKE - SJU
2 stops13h 45mSouthwest
Mon 9/294:05 pmSJU - MKE
1 stop7h 55mSouthwest
Deal found 7/3$270
This American Airlines deal was found by Cheapflights users on 7/2. 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.
Mon 9/298:00 amMKE - SJU
1 stop6h 52mAmerican Airlines
Thu 10/21:36 pmSJU - MKE
2 stops11h 33mAmerican Airlines
Deal found 7/2$276
This United Airlines deal was found by Cheapflights users on 7/2. 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.
Wed 10/295:00 amMKE - SJU
2 stops14h 26mUnited Airlines
Sat 11/12:05 amSJU - MKE
1 stop10h 14mUnited Airlines
Deal found 7/2$315
This FlightHub deal was found by Cheapflights users on 7/3. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/186:00 amMKE - SJU
1 stop16h 57mSpirit Airlines
Sat 8/234:05 pmSJU - MKE
1 stop8h 01mSpirit Airlines
Deal found 7/3$316
This Trip.com deal was found by Cheapflights users on 7/2. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/124:37 pmMKE - SJU
1 stop7h 58mMultiple Airlines
Tue 7/153:40 amSJU - MKE
1 stop13h 02mMultiple Airlines
Deal found 7/2$381

Cheapflights Fare Finder

Customize your flight search to find flights from Milwaukee 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 July 3, 2025.
Use the filters below to find and compare flights from Milwaukee to San Juan Luis Munoz Marin Intl Airport that are best for you.

Fly from

Milwaukee

Fly to

Luis Munoz Marin Intl

Route

Depart

Return

Price

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Tue 9/16

7:05 am-4:31 pm

1 stop8h 26m

San Juan Luis Munoz Marin Intl

Tue 9/23

5:41 pm-11:48 pm

1 stop7h 07m

$225

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Mon 9/22

6:00 am-8:45 pm

2 stops13h 45m

San Juan Luis Munoz Marin Intl

Mon 9/29

4:05 pm-11:00 pm

1 stop7h 55m

$270

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Mon 9/29

8:00 am-3:52 pm

1 stop6h 52m

San Juan Luis Munoz Marin Intl

Thu 10/2

1:36 pm-12:09 am

2 stops11h 33m

$276

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Fri 7/25

4:37 pm-1:35 am

1 stop7h 58m

San Juan Luis Munoz Marin Intl

Thu 7/31

1:37 am-8:50 am

1 stop8h 13m

$298

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Sun 9/7

7:00 am-2:44 pm

1 stop6h 44m

San Juan Luis Munoz Marin Intl

Fri 9/12

1:05 am-10:13 am

2 stops10h 08m

$315

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Sat 7/12

4:37 pm-1:35 am

1 stop7h 58m

San Juan Luis Munoz Marin Intl

Tue 7/15

3:40 am-3:42 pm

1 stop13h 02m

$381

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Tue 9/16

5:40 am-4:31 pm

1 stop9h 51m

$113

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Mon 9/1

7:10 am-10:56 pm

1 stop14h 46m

$115

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Sat 7/12

4:37 pm-1:35 am

1 stop7h 58m

$143

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Sun 8/10

11:05 am-12:45 am

1 stop12h 40m

$158

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/2

Showing 1-10 of 11 results
1
2

Best time to book a flight from Milwaukee to Luis Munoz Marin Intl

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

How far ahead should I book a flight from Milwaukee to San Juan Luis Munoz Marin Intl Airport?

Use this chart to determine the optimal time to book a round-trip flight from Milwaukee to Luis Munoz Marin Intl. Price data was last updated on June 27, 2025.

The price you pay for your flight from Milwaukee to San Juan Luis Munoz Marin Intl Airport may vary depending on when you book. For the best chance of a lower fare, look to book 39 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, September is the cheapest month in which you can book a flight from Milwaukee to San Juan Luis Munoz Marin Intl Airport (average of $254). Flying from Milwaukee 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 MKE to SJU?

Find hourly flight availability from Milwaukee 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 3, 2025.

When flying from Milwaukee to San Juan Luis Munoz Marin Intl Airport, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 22% versus a flight at noon.

What is the cheapest day to fly from Milwaukee to San Juan Luis Munoz Marin Intl Airport?

Use this chart to determine the cheapest time to fly round-trip from Milwaukee to Luis Munoz Marin Intl. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Milwaukee to San Juan Luis Munoz Marin Intl Airport flight should consider departing on Wednesday evenings when fares are most often at their lowest. Monday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

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

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 July 3, 2025.
Read reviews from past customers who have flown Southwest, Delta, and United Airlines from Milwaukee to San Juan Luis Munoz Marin Intl Airport. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,266 reviews

Boarding

8.2

Food

7.0

Crew

8.6

Comfort

8.0

Entertainment

7.6

Overall

8.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
Southwest
8.0
Very good
4,266 reviews
Southwest
8.0
Very good
4,266 reviews

Boarding

8.2

Food

7.0

Crew

8.6

Comfort

8.0

Entertainment

7.6

Overall

8.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
Delta
8.0
Very good
7,982 reviews
Southwest
8.0
Very good
4,266 reviews

Boarding

8.2

Food

7.0

Crew

8.6

Comfort

8.0

Entertainment

7.6

Overall

8.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
United Airlines
7.4
Good
8,861 reviews
Southwest
8.0
Very good
4,266 reviews

Boarding

8.2

Food

7.0

Crew

8.6

Comfort

8.0

Entertainment

7.6

Overall

8.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,266 reviews

Boarding

8.2

Food

7.0

Crew

8.6

Comfort

8.0

Entertainment

7.6

Overall

8.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.
Spirit Airlines
6.3
Okay
8,086 reviews
Southwest
8.0
Very good
4,266 reviews

Boarding

8.2

Food

7.0

Crew

8.6

Comfort

8.0

Entertainment

7.6

Overall

8.0

Reviews

1 / 20
8.0
Excellent

John,May 2025

PVD - BNA

It’s southwest so no frills but clean, efficient and got me to my location.

Related info for your journey

Find useful and relevant information for your journey from Milwaukee 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 airport do you fly from for flights from Milwaukee to San Juan Luis Munoz Marin Intl?

    For a flight from Milwaukee to San Juan Luis Munoz Marin Intl, you will be flying from Milwaukee-Mitchell. Milwaukee-Mitchell (MKE) is just 6.4 mi from the center of the city. Milwaukee-Mitchell is the only Milwaukee airport and it handles 0 outbound flights to San Juan Luis Munoz Marin Intl per day. 6 airlines have flights to San Juan Luis Munoz Marin Intl from Milwaukee-Mitchell on a regular basis.

  • What are the cheapest airlines flying from Milwaukee to San Juan Luis Munoz Marin Intl Airport round-trip?

    Flying on Delta is currently your cheapest option to San Juan Luis Munoz Marin Intl Airport, with prices starting at $225. Additional round-trip tickets that might be worth considering are offered by Southwest and American Airlines, with the lowest prices starting at $270 and $276, respectively. Delta is priced at 48% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from Milwaukee to San Juan Luis Munoz Marin Intl Airport one-way?

    The cheapest airline one-way is Delta, with whom users have recently found tickets for as low as $113. However, be on the lookout for offers from American Airlines and Spirit Airlines, as they are both options that can get you from Milwaukee to San Juan Luis Munoz Marin Intl Airport for a low price.

  • Where are the most common layover locations when flying from Milwaukee to San Juan Luis Munoz Marin Intl Airport?

    Most of the time, Milwaukee to San Juan Luis Munoz Marin Intl Airport flights that have layovers will stop in Atlanta.

  • What are some popular things to do or see while on a layover in Atlanta?

    Atlanta travelers tend to visit Georgia Aquarium, Fox Theatre, and World of Coca-Cola more than anywhere else. Travelers on a layover in Atlanta can visit Georgia Aquarium, Fox Theatre, and World of Coca-Cola, by traveling 8.6 mi, 9.3 mi, and 8.6 mi, respectively after landing at Atlanta Hartsfield-Jackson. Travelers in need of a car in Atlanta can rent one for about $47 per day.

  • Where are the least popular layover locations for Milwaukee to San Juan Luis Munoz Marin Intl Airport flights?

    The least popular layover on flights from Milwaukee to San Juan Luis Munoz Marin Intl Airport is Charlotte.

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

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

  • How can I find direct flights from Milwaukee 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 Milwaukee to Luis Munoz Marin Intl.

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

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

    Currently, September is the cheapest month in which you can book a flight from Milwaukee to San Juan Luis Munoz Marin Intl Airport (average of $254). Flying from Milwaukee 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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Top 6 airlines flying from Milwaukee to Luis Munoz Marin Intl

Discover the top 6 airlines that operate flights from Milwaukee 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 July 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$129Average$239FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$208Average$388FlexibilityNo cancel feeOn-time65%
United AirlinesCheapest$225Average$424FlexibilityNo cancel feeOn-time69%
DeltaCheapest$255Average$391FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$273Average$469FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$325Average$596FlexibilityNo cancel feeOn-time63%

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