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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 10/4. 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

American Airlines Logo
1:43 pm - 11:59 pmMKE-SJU
9h 16m1 stop
American Airlines Logo
5:30 am - 8:18 pmSJU-MKE
15h 48m1 stop
$235American Airlines
Find Deal
Fri, Oct 24 - Thu, Oct 30
American Airlines Logo
2:05 pm - 11:54 pmMKE-SJU
8h 49m1 stop
American Airlines Logo
5:30 am - 8:18 pmSJU-MKE
15h 48m1 stop
$236American Airlines
Find Deal
Mon, Oct 6 - Wed, Oct 15
United Airlines Logo
12:05 pm - 11:57 pmMKE-SJU
10h 52m2 stops
United Airlines Logo
1:05 am - 10:45 amSJU-MKE
10h 40m1 stop
$253United Airlines
Find Deal
Sat, Oct 4 - Tue, Oct 7
United Airlines Logo
2:32 pm - 6:11 amMKE-SJU
13h 39m2 stops
United Airlines Logo
8:35 am - 1:53 pmSJU-MKE
7h 18m1 stop
$254United Airlines
Find Deal
Sun, Jan 18 - Fri, Jan 23
Southwest Logo
2:05 pm - 11:45 pmMKE-SJU
8h 40m1 stop
Southwest Logo
6:10 am - 4:15 pmSJU-MKE
11h 05m1 stop
$299Southwest
Find Deal
Sat, Oct 4 - Wed, Oct 8
Delta Logo
12:20 pm - 11:49 pmMKE-SJU
9h 29m1 stop
Delta Logo
1:12 pm - 8:12 pmSJU-MKE
8h 00m1 stop
$305Delta
Find Deal
Sun, Mar 1 - Tue, Mar 10
Southwest Logo
12:10 pm - 1:25 amMKE-SJU
11h 15m1 stop
Southwest Logo
5:45 am - 10:45 amSJU-MKE
7h 00m1 stop
$350Southwest
Find Deal
Fri, Nov 14 - Mon, Nov 17
Spirit Airlines Logo
1:55 pm - 1:44 amMKE-SJU
10h 49m1 stop
Spirit Airlines Logo
2:49 am - 12:42 pmSJU-MKE
10h 53m1 stop
$358Spirit Airlines
Find Deal
Thu, Oct 9 - Wed, Oct 15
Delta Logo
11:37 am - 11:13 pmMKE-SJU
9h 36m1 stop
Delta Logo
3:20 pm - 8:30 pmSJU-MKE
7h 10m1 stop
$363Delta
Find Deal
Wed, Nov 12 - Tue, Nov 18
Spirit Airlines Logo
1:55 pm - 1:44 amMKE-SJU
10h 49m1 stop
Spirit Airlines Logo
2:49 am - 12:42 pmSJU-MKE
10h 53m1 stop
$382Spirit Airlines
Find Deal
Thu, Oct 23 - Sat, Oct 25

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

Our best American Airlines deals on Milwaukee to San Juan Luis Munoz Marin Intl Airport flight tickets
American Airlines
Oct 24
MKE1:43 pmMilwaukee-Mitchell
9h 16m
1 stop
SJU11:59 pmSan Juan Luis Munoz Marin Intl
Oct 30
SJU5:30 amSan Juan Luis Munoz Marin Intl
15h 48m
1 stop
MKE8:18 pmMilwaukee-Mitchell
$235
Find similar
American Airlines
Oct 6
MKE2:05 pmMilwaukee-Mitchell
8h 49m
1 stop
SJU11:54 pmSan Juan Luis Munoz Marin Intl
Oct 15
SJU5:30 amSan Juan Luis Munoz Marin Intl
15h 48m
1 stop
MKE8:18 pmMilwaukee-Mitchell
$236
Find similar
American Airlines
Mar 10
MKE6:50 pmMilwaukee-Mitchell
16h 35m
1 stop
SJU12:25 pmSan Juan Luis Munoz Marin Intl
Mar 11
SJU3:15 pmSan Juan Luis Munoz Marin Intl
7h 01m
1 stop
MKE9:16 pmMilwaukee-Mitchell
$290
Find similar

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
Oct 4
MKE12:05 pmMilwaukee-Mitchell
10h 52m
2 stops
SJU11:57 pmSan Juan Luis Munoz Marin Intl
Oct 7
SJU1:05 amSan Juan Luis Munoz Marin Intl
10h 40m
1 stop
MKE10:45 amMilwaukee-Mitchell
$253
Find similar
United Airlines
Jan 18
MKE2:32 pmMilwaukee-Mitchell
13h 39m
2 stops
SJU6:11 amSan Juan Luis Munoz Marin Intl
Jan 23
SJU8:35 amSan Juan Luis Munoz Marin Intl
7h 18m
1 stop
MKE1:53 pmMilwaukee-Mitchell
$254
Find similar
United Airlines
Jan 18
MKE11:30 amMilwaukee-Mitchell
7h 30m
1 stop
SJU9:00 pmSan Juan Luis Munoz Marin Intl
Jan 22
SJU2:05 amSan Juan Luis Munoz Marin Intl
12h 04m
2 stops
MKE12:09 pmMilwaukee-Mitchell
$260
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 September 11, 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

Fri 10/24

1:43 pm-11:59 pm

1 stop9h 16m

San Juan Luis Munoz Marin Intl

Thu 10/30

5:30 am-8:18 pm

1 stop15h 48m

$235

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Mon 10/6

2:05 pm-11:54 pm

1 stop8h 49m

San Juan Luis Munoz Marin Intl

Wed 10/15

5:30 am-8:18 pm

1 stop15h 48m

$236

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Sat 10/4

12:05 pm-11:57 pm

2 stops10h 52m

San Juan Luis Munoz Marin Intl

Tue 10/7

1:05 am-10:45 am

1 stop10h 40m

$253

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Sun 1/18

2:32 pm-6:11 am

2 stops13h 39m

San Juan Luis Munoz Marin Intl

Fri 1/23

8:35 am-1:53 pm

1 stop7h 18m

$254

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Sat 10/4

2:05 pm-11:45 pm

1 stop8h 40m

San Juan Luis Munoz Marin Intl

Wed 10/8

6:10 am-4:15 pm

1 stop11h 05m

$299

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Sun 3/1

12:20 pm-11:49 pm

1 stop9h 29m

San Juan Luis Munoz Marin Intl

Tue 3/10

1:12 pm-8:12 pm

1 stop8h 00m

$305

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Fri 11/14

12:10 pm-1:25 am

1 stop11h 15m

San Juan Luis Munoz Marin Intl

Mon 11/17

5:45 am-10:45 am

1 stop7h 00m

$350

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Thu 10/9

1:55 pm-1:44 am

1 stop10h 49m

San Juan Luis Munoz Marin Intl

Wed 10/15

2:49 am-12:42 pm

1 stop10h 53m

$358

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Wed 11/12

11:37 am-11:13 pm

1 stop9h 36m

San Juan Luis Munoz Marin Intl

Tue 11/18

3:20 pm-8:30 pm

1 stop7h 10m

$363

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Thu 10/23

1:55 pm-1:44 am

1 stop10h 49m

San Juan Luis Munoz Marin Intl

Sat 10/25

2:49 am-12:42 pm

1 stop10h 53m

$382

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 $345.

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 $438 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 $374 on momondo.

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

As of September 2025, prices for Milwaukee to San Juan Luis Munoz Marin Intl Airport flights are approximately 78% 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.
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  • 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 44m 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
3,177 reviews
Search Frontier flights
United AirlinesPriceFrom $202Free CancellationRating
7.4
8,937 reviews
Search United Airlines flights
Spirit AirlinesPriceFrom $208Free CancellationRating
6.3
8,023 reviews
Search Spirit Airlines flights
DeltaPriceFrom $215Free CancellationRating
7.9
7,960 reviews
Search Delta flights
American AirlinesPriceFrom $275Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
SouthwestPriceFrom $315Free 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 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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