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San Juan

$108+ Cheap flights from Milwaukee (MKE) to San Juan

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 7/11. Fares are subject to change and may not be available on all flights or dates of travel.
MKE — SJU
May 4 — May 111
Sun 5/4
Sun 5/11
1 adult, Economy
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Cheapflights Tip: The best prices from Milwaukee-Mitchell to San Juan 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 San Juan

Discover tips and strategies to find the most affordable flight options for your journey from Milwaukee (MKE) to San Juan (PR1). 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 April 29, 2025.

Round-trip from

$215
(Delta)

One-way from

$108
(Delta)

Popular in

December

Cheapest in

September

Average price

$370
From Milwaukee-Mitchell to San Juan
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One-way flight from Milwaukee-Mitchell to San Juan
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Highest demand for flights based on searches. 9% potential increase in price ($47 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($17 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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Find flight deals from Milwaukee to San Juan

Cheapest flights from Milwaukee to San Juan
Explore the most affordable flight options available from Milwaukee to San Juan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 29, 2025.

This Delta deal was found by Cheapflights users on 4/28. 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 9/167:00 amMKE - SJU
1 stop8h 18mDelta
Wed 9/245:19 pmSJU - MKE
1 stop7h 06mDelta
Deal found 4/28$215
This American Airlines deal was found by Cheapflights users on 4/28. 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.
Tue 9/165:20 amMKE - SJU
2 stops8h 27mAmerican Airlines
Tue 9/233:55 pmSJU - MKE
1 stop8h 34mAmerican Airlines
Deal found 4/28$292
This United Airlines deal was found by Cheapflights users on 4/29. 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.
Tue 9/165:00 amMKE - SJU
2 stops14h 38mUnited Airlines
Mon 9/221:05 amSJU - MKE
2 stops10h 08mUnited Airlines
Deal found 4/29$305
This Mytrip deal was found by Cheapflights users on 4/28. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/269:15 amMKE - SJU
1 stop12h 23mSpirit Airlines
Mon 6/28:12 pmSJU - MKE
2 stops16h 15mSpirit Airlines
Deal found 4/28$308
This CheapOair deal was found by Cheapflights users on 4/28. 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.
Mon 5/1912:22 pmMKE - SJU
1 stop11h 32mMultiple Airlines
Sat 6/74:20 pmSJU - MKE
1 stop26h 09mMultiple Airlines
Deal found 4/28$405
This Southwest deal was found by Cheapflights users on 4/28. 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 6/308:40 pmMKE - SJU
1 stop11h 25mSouthwest
Tue 7/88:00 pmSJU - MKE
1 stop13h 05mSouthwest
Deal found 4/28$450

Cheapflights Fare Finder

Customize your flight search to find flights from Milwaukee to San Juan 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 April 29, 2025.
Use the filters below to find and compare flights from Milwaukee to San Juan that are best for you.

Fly from

Milwaukee

Fly to

San Juan

Route

Depart

Return

Price

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Tue 9/16

7:00 am-4:18 pm

1 stop8h 18m

San Juan Luis Munoz Marin Intl

Tue 9/23

5:19 pm-11:25 pm

1 stop7h 06m

$215

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Tue 9/16

5:06 am-4:20 pm

2 stops10h 14m

San Juan Luis Munoz Marin Intl

Tue 9/23

5:25 pm-9:53 am

2 stops17h 28m

$292

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Tue 9/16

5:00 am-8:38 pm

2 stops14h 38m

San Juan Luis Munoz Marin Intl

Mon 9/22

1:05 am-10:13 am

2 stops10h 08m

$305

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Mon 5/26

9:15 am-10:38 pm

1 stop12h 23m

San Juan Luis Munoz Marin Intl

Mon 6/2

8:12 pm-11:27 am

2 stops16h 15m

$308

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Mon 5/19

12:22 pm-12:54 am

1 stop11h 32m

San Juan Luis Munoz Marin Intl

Sat 6/7

4:20 pm-5:29 pm

1 stop26h 09m

$405

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Mon 6/30

8:40 pm-9:05 am

1 stop11h 25m

San Juan Luis Munoz Marin Intl

Tue 7/8

8:00 pm-8:05 am

1 stop13h 05m

$450

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Tue 9/16

7:00 am-4:18 pm

1 stop8h 18m

$108

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Mon 5/26

9:15 am-10:38 pm

1 stop12h 23m

$151

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Tue 5/20

6:15 am-8:09 pm

2 stops12h 54m

$185

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Tue 7/22

5:00 am-5:25 pm

2 stops11h 25m

$218

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/28

Showing 1-10 of 14 results
1
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Best time to book a flight from Milwaukee to San Juan

Have a flexible travel schedule? Discover the best time to fly to San Juan 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

How far ahead should I book a flight from Milwaukee to San Juan?

Use this chart to determine the optimal time to book a round-trip flight from Milwaukee to San Juan. Price data was last updated on April 25, 2025.

To ensure you get the cheapest price possible for a flight from Milwaukee to San Juan, you should look to book at least 39 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Milwaukee to San Juan?

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

Find hourly flight availability from Milwaukee to San Juan. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 29, 2025.

When flying from Milwaukee to San Juan, 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?

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

Travelers seeking maximum savings on their Milwaukee to San Juan 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.

Rainfall in San Juan by month

Plan your trip to San Juan by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in San Juan 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 when rainfall is around 2.2 in.

Temperature in San Juan by month

Plan your trip to San Juan by taking into account the average temperature totals by month.

If weather is an important factor for your trip to San Juan, 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 San Juan

Get insights into the airlines that provide service to San Juan. 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 San Juan. Reviews last updated April 29, 2025.
Read through reviews of airlines operating flights from Milwaukee to San Juan, such as Alaska Airlines, Southwest and Delta. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,961 reviews

Crew

8.5

Boarding

8.2

Food

7.1

Entertainment

7.1

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
9,961 reviews
Alaska Airlines
8.0
Very good
9,961 reviews

Crew

8.5

Boarding

8.2

Food

7.1

Entertainment

7.1

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,295 reviews
Alaska Airlines
8.0
Very good
9,961 reviews

Crew

8.5

Boarding

8.2

Food

7.1

Entertainment

7.1

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,929 reviews
Alaska Airlines
8.0
Very good
9,961 reviews

Crew

8.5

Boarding

8.2

Food

7.1

Entertainment

7.1

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,696 reviews
Alaska Airlines
8.0
Very good
9,961 reviews

Crew

8.5

Boarding

8.2

Food

7.1

Entertainment

7.1

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
JetBlue
7.3
Good
2,922 reviews
Alaska Airlines
8.0
Very good
9,961 reviews

Crew

8.5

Boarding

8.2

Food

7.1

Entertainment

7.1

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Related info for your journey

Find useful and relevant information for your journey from Milwaukee to San Juan. 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?

    If you book a flight to San Juan from Milwaukee, you will be flying from Milwaukee-Mitchell, which is the city’s only airport. Milwaukee-Mitchell (MKE) is located 6.4 mi from the center of Milwaukee. There are 0 flights from Milwaukee-Mitchell to San Juan per day from 7 different airlines.

  • What are the cheapest airlines flying from Milwaukee to San Juan round-trip?

    Cheapflights users have booked flights from Milwaukee to San Juan round-trip from $215. Other airlines that can offer you cheap pricing are American Airlines, from $292, and United Airlines, from $305. Delta is priced at 51% 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 one-way?

    $108 is the cheapest one-way deal found within the past few days, from Delta. You may also be able to find cheap deals on Spirit Airlines and American Airlines, with prices starting from $147 and $185, respectively.

  • Where are the most common layover locations when flying from Milwaukee to San Juan?

    Flights departing from Milwaukee and landing in San Juan layover in Atlanta most frequently.

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

    Georgia Aquarium, Fox Theatre, and World of Coca-Cola are the most popular attractions in Atlanta if you're in need of something to do during your layover. 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 can book a car rental at Atlanta Hartsfield-Jackson for about $55 per day to make their sightseeing more efficient.

  • Where are the least popular layover locations for Milwaukee to San Juan flights?

    Milwaukee to San Juan flights that have layovers will least frequently stop in Charlotte.

  • Can I find deals for flights from Milwaukee to San Juan that include hotel bookings?

    Yes. In addition to deals on Milwaukee to San Juan flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Milwaukee to San Juan?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Milwaukee to San Juan.

  • Can I find deals for business class flights from Milwaukee to San Juan?

    Yes. Cheapflights offers flight deals from Milwaukee to San Juan 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?

    Currently, September is the cheapest month in which you can book a flight from Milwaukee to San Juan (average of $254). Flying from Milwaukee to San Juan 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.

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Alternative routes for Milwaukee to San Juan

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Top 7 airlines flying from Milwaukee to San Juan

Discover the top 7 airlines that operate flights from Milwaukee to San Juan. 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 April 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$129Average$244FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$204Average$392FlexibilityNo cancel feeOn-time65%
United AirlinesCheapest$233Average$455FlexibilityNo cancel feeOn-time69%
JetBlueCheapest$248Average$463FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$267Average$479FlexibilityNo cancel feeOn-time71%
DeltaCheapest$286Average$395FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$343Average$621FlexibilityNo cancel feeOn-time63%

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