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Cheap flights from Milwaukee to San Juan from $118

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Milwaukee to San Juan departing on 2/7. 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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Find the cheapest flights from Milwaukee to San Juan

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
7:55 am - 8:26 pmMKE-SJU
11h 31m1 stop
United Airlines Logo
1:05 am - 10:17 amSJU-MKE
10h 12m1 stop
$230United Airlines
Find Deal
Tue, Mar 10 - Tue, Mar 10
Delta Logo
11:39 am - 11:20 pmMKE-SJU
9h 41m1 stop
Delta Logo
7:00 am - 2:21 pmSJU-MKE
9h 21m1 stop
$235Delta
Find Deal
Sun, Dec 7 - Wed, Dec 10
American Airlines Logo
10:17 am - 11:56 pmMKE-SJU
11h 39m1 stop
American Airlines Logo
6:00 am - 3:56 pmSJU-MKE
11h 56m1 stop
$260American Airlines
Find Deal
Sun, Jan 18 - Fri, Jan 23
Southwest Logo
1:05 pm - 9:30 pmMKE-SJU
6h 25m1 stop
Southwest Logo
5:35 am - 10:45 amSJU-MKE
7h 10m1 stop
$274Southwest
Find Deal
Sat, Jan 24 - Sun, Feb 1
Frontier Logo
8:08 pm - 9:56 amMKE-SJU
11h 48m1 stop
Frontier Logo
11:05 am - 5:09 pmSJU-MKE
8h 04m1 stop
$280Frontier
Find Deal
Wed, Nov 26 - Sun, Dec 7
Frontier Logo
6:02 pm - 2:50 amMKE-SJU
6h 48m1 stop
Frontier Logo
7:00 am - 5:04 pmSJU-MKE
12h 04m1 stop
$284Frontier
Find Deal
Tue, Feb 3 - Tue, Feb 10
American Airlines Logo
5:00 am - 3:54 pmMKE-SJU
8h 54m2 stops
American Airlines Logo
8:00 am - 2:12 pmSJU-MKE
8h 12m1 stop
$297American Airlines
Find Deal
Sat, Nov 8 - Sat, Nov 15
Southwest Logo
1:05 pm - 12:10 amMKE-SJU
9h 05m2 stops
Southwest Logo
5:35 am - 10:45 amSJU-MKE
7h 10m1 stop
$313Southwest
Find Deal
Sat, Jan 24 - Sun, Feb 1
Multiple Airlines Logo
6:02 pm - 9:55 amMKE-SJU
13h 53m1 stop
Multiple Airlines Logo
2:21 pm - 7:29 pmSJU-MKE
7h 08m1 stop
$378Multiple Airlines
Find Deal
Sat, Feb 14 - Sun, Feb 22
Multiple Airlines Logo
11:02 am - 2:50 amMKE-SJU
13h 48m1 stop
Multiple Airlines Logo
3:00 pm - 9:57 amSJU-MKE
44h 57m2 stops
$384Multiple Airlines
Find Deal
Mon, Dec 8 - Sat, Dec 13

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

Our best United Airlines deals on Milwaukee to San Juan Luis Munoz Marin Intl Airport flight tickets
United Airlines
Mar 10
MKE7:55 amMilwaukee-Mitchell
11h 31m
1 stop
SJU8:26 pmSan Juan Luis Munoz Marin Intl
Mar 10
SJU1:05 amSan Juan Luis Munoz Marin Intl
10h 12m
1 stop
MKE10:17 amMilwaukee-Mitchell
$230
Find similar
United Airlines
Feb 3
MKE10:30 amMilwaukee-Mitchell
9h 52m
2 stops
SJU10:22 pmSan Juan Luis Munoz Marin Intl
Feb 10
SJU2:15 pmSan Juan Luis Munoz Marin Intl
10h 41m
2 stops
MKE10:56 pmMilwaukee-Mitchell
$253
Find similar
United Airlines
Nov 8
MKE7:00 amMilwaukee-Mitchell
12h 26m
2 stops
SJU9:26 pmSan Juan Luis Munoz Marin Intl
Nov 11
SJU4:52 pmSan Juan Luis Munoz Marin Intl
7h 51m
1 stop
MKE10:43 pmMilwaukee-Mitchell
$255
Find similar

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

Our best Frontier deals on Milwaukee to San Juan Luis Munoz Marin Intl Airport flight tickets
Frontier
Nov 26
MKE8:08 pmMilwaukee-Mitchell
11h 48m
1 stop
SJU9:56 amSan Juan Luis Munoz Marin Intl
Dec 7
SJU11:05 amSan Juan Luis Munoz Marin Intl
8h 04m
1 stop
MKE5:09 pmMilwaukee-Mitchell
$280
Find similar
Frontier
Feb 3
MKE6:02 pmMilwaukee-Mitchell
6h 48m
1 stop
SJU2:50 amSan Juan Luis Munoz Marin Intl
Feb 10
SJU7:00 amSan Juan Luis Munoz Marin Intl
12h 04m
1 stop
MKE5:04 pmMilwaukee-Mitchell
$284
Find similar
Frontier
Feb 25
MKE6:02 pmMilwaukee-Mitchell
6h 48m
1 stop
SJU2:50 amSan Juan Luis Munoz Marin Intl
Mar 11
SJU8:37 pmSan Juan Luis Munoz Marin Intl
14h 25m
1 stop
MKE10:02 amMilwaukee-Mitchell
$294
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Milwaukee 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 October 16, 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

Fly to

Route

Depart

Return

Price

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Tue 3/10

7:55 am-8:26 pm

1 stop11h 31m

San Juan Luis Munoz Marin Intl

Tue 3/10

1:05 am-10:17 am

1 stop10h 12m

$230

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Sun 12/7

11:39 am-11:20 pm

1 stop9h 41m

San Juan Luis Munoz Marin Intl

Wed 12/10

7:00 am-2:21 pm

1 stop9h 21m

$235

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Sun 1/18

10:17 am-11:56 pm

1 stop11h 39m

San Juan Luis Munoz Marin Intl

Fri 1/23

6:00 am-3:56 pm

1 stop11h 56m

$260

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Sat 1/24

1:05 pm-9:30 pm

1 stop6h 25m

San Juan Luis Munoz Marin Intl

Sun 2/1

5:35 am-10:45 am

1 stop7h 10m

$274

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Wed 11/26

8:08 pm-9:56 am

1 stop11h 48m

San Juan Luis Munoz Marin Intl

Sun 12/7

11:05 am-5:09 pm

1 stop8h 04m

$280

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Tue 2/3

6:02 pm-2:50 am

1 stop6h 48m

San Juan Luis Munoz Marin Intl

Tue 2/10

7:00 am-5:04 pm

1 stop12h 04m

$284

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Sat 11/8

5:00 am-3:54 pm

2 stops8h 54m

San Juan Luis Munoz Marin Intl

Sat 11/15

8:00 am-2:12 pm

1 stop8h 12m

$297

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Sat 1/24

1:05 pm-12:10 am

2 stops9h 05m

San Juan Luis Munoz Marin Intl

Sun 2/1

5:35 am-10:45 am

1 stop7h 10m

$313

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Sat 2/14

6:02 pm-9:55 am

1 stop13h 53m

San Juan Luis Munoz Marin Intl

Sun 2/22

2:21 pm-7:29 pm

1 stop7h 08m

$378

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Mon 12/8

11:02 am-2:50 am

1 stop13h 48m

San Juan Luis Munoz Marin Intl

Sat 12/13

3:00 pm-9:57 am

2 stops44h 57m

$384

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 Milwaukee 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 typical price of a round-trip flight between Milwaukee and San Juan Luis Munoz Marin Intl Airport?

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 October is also cheap. Prices for this month can be found on momondo for an average of $338.

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 Milwaukee is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $389. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Friday is the most expensive day to depart from Milwaukee because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $477.

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 $360. Flights at noon are often more expensive with an average ticket price of $458.

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 Milwaukee 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 $433 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 Milwaukee for as low as $298 on momondo.

How have Milwaukee to San Juan Luis Munoz Marin Intl Airport flight prices changed over time?

As of October 2025, prices for Milwaukee to San Juan Luis Munoz Marin Intl Airport flights are approximately 40% more expensive when compared to flights at the same time last year.

When to book flights from Milwaukee to San Juan Luis Munoz Marin Intl Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Milwaukee 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 Milwaukee to San Juan Luis Munoz Marin Intl Airport (MKE to SJU) flight deals and tips

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

Direct flights

None
There are no direct flights from Milwaukee to San Juan Luis Munoz Marin Intl Airport. There are no popular flight routes from Milwaukee to San Juan Luis Munoz Marin Intl Airport.
Search flight deals

  • How far is Milwaukee-Mitchell to San Juan Luis Munoz Marin Intl by plane?

    The distance between Milwaukee-Mitchell and San Juan Luis Munoz Marin Intl is about 2124.9 mi. Typically, this will take 6h 25m by plane in normal conditions.

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

    Prices for flights from Milwaukee-Mitchell Airport to San Juan Luis Munoz Marin Intl Airport refresh daily.

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

  • How old do you have to be to fly from Milwaukee-Mitchell 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 Milwaukee-Mitchell 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 airline from Milwaukee to San Juan Luis Munoz Marin Intl Airport?

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

Compare and see reviews for airlines that fly from Milwaukee to San Juan Luis Munoz Marin Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $129Free CancellationRating
5.8
3,137 reviews
Search Frontier flights
United AirlinesPriceFrom $188Free CancellationRating
7.4
8,982 reviews
Search United Airlines flights
DeltaPriceFrom $215Free CancellationRating
7.9
7,982 reviews
Search Delta flights
Spirit AirlinesPriceFrom $226Free CancellationRating
6.3
8,099 reviews
Search Spirit Airlines flights
American AirlinesPriceFrom $275Free CancellationRating
7.2
11,040 reviews
Search American Airlines flights
SouthwestPriceFrom $315Free CancellationRating
8.0
4,240 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 Milwaukee to San Juan?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Milwaukee to San Juan. Millions of users trust and use momondo every year so you are in good hands.

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

momondo does allow users to show only those flights to San Juan from Milwaukee which offer a flexible booking policy as well as other useful filters and features.

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

momondo provides multiple filters to help you find the best flight to San Juan from Milwaukee. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Milwaukee 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 Milwaukee and alert you when they change.

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