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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 8/19. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Milwaukee to San Juan

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
8:10 pm - 7:58 am
MKE
-
SJU
10h 48m
1 stop
Frontier Logo
9:03 am - 7:15 pm
SJU
-
MKE
11h 12m
1 stop
$187Frontier
Sun, Sep 13 - Sun, Oct 4
Frontier Logo
8:10 pm - 7:58 am
MKE
-
SJU
10h 48m
1 stop
Frontier Logo
9:03 am - 7:15 pm
SJU
-
MKE
11h 12m
1 stop
$205Frontier
Thu, Sep 17 - Thu, Oct 8
Southwest Logo
2:10 pm - 12:30 am
MKE
-
SJU
9h 20m
1 stop
Southwest Logo
6:00 am - 4:10 pm
SJU
-
MKE
11h 10m
1 stop
$226Southwest
Sun, Aug 23 - Thu, Aug 27
American Airlines Logo
12:58 pm - 10:24 pm
MKE
-
SJU
8h 26m
1 stop
American Airlines Logo
3:47 pm - 10:59 pm
SJU
-
MKE
8h 12m
1 stop
$276American Airlines
Sat, Aug 22 - Tue, Aug 25
American Airlines Logo
2:49 pm - 11:59 pm
MKE
-
SJU
8h 10m
1 stop
American Airlines Logo
2:33 pm - 9:06 pm
SJU
-
MKE
7h 33m
1 stop
$281American Airlines
Wed, Sep 2 - Sun, Sep 6
American Airlines Logo
11:32 am - 11:15 pm
MKE
-
SJU
10h 43m
1 stop
American Airlines Logo
7:30 am - 9:47 pm
SJU
-
MKE
15h 17m
1 stop
$291American Airlines
Thu, Aug 6 - Fri, Aug 7
American Airlines Logo
6:00 am - 6:24 pm
MKE
-
SJU
11h 24m
2 stops
American Airlines Logo
2:33 pm - 11:14 pm
SJU
-
MKE
9h 41m
1 stop
$296American Airlines
Tue, Aug 4 - Thu, Aug 13
American Airlines Logo
5:02 am - 6:34 pm
MKE
-
SJU
12h 32m
2 stops
American Airlines Logo
1:38 pm - 11:14 pm
SJU
-
MKE
10h 36m
2 stops
$301American Airlines
Wed, Aug 5 - Fri, Aug 7
American Airlines Logo
10:21 am - 11:59 pm
MKE
-
SJU
12h 38m
2 stops
American Airlines Logo
7:00 am - 9:06 pm
SJU
-
MKE
15h 06m
1 stop
$316American Airlines
Fri, Aug 28 - Mon, Sep 7
American Airlines Logo
5:00 am - 6:34 pm
MKE
-
SJU
12h 34m
2 stops
American Airlines Logo
12:55 am - 12:47 pm
SJU
-
MKE
12h 52m
1 stop
$321American Airlines
Wed, Sep 2 - Sat, Sep 5

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

Our best Southwest deals on Milwaukee to San Juan Luis Munoz Marin Intl Airport flight tickets
Southwest
Aug 23
MKE2:10 pmMilwaukee-Mitchell
9h 20m
1 stop
SJU12:30 amSan Juan Luis Munoz Marin Intl
Aug 27
SJU6:00 amSan Juan Luis Munoz Marin Intl
11h 10m
1 stop
MKE4:10 pmMilwaukee-Mitchell
$226
Southwest
Jun 24
MKE7:45 amMilwaukee-Mitchell
9h 40m
2 stops
SJU6:25 pmSan Juan Luis Munoz Marin Intl
Jul 25
SJU8:15 pmSan Juan Luis Munoz Marin Intl
13h 40m
1 stop
MKE8:55 amMilwaukee-Mitchell
$502
Southwest
Jun 22
MKE8:15 pmMilwaukee-Mitchell
11h 45m
1 stop
SJU9:00 amSan Juan Luis Munoz Marin Intl
Jun 24
SJU5:00 amSan Juan Luis Munoz Marin Intl
7h 50m
1 stop
MKE11:50 amMilwaukee-Mitchell
$510

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
Sep 13
MKE8:10 pmMilwaukee-Mitchell
10h 48m
1 stop
SJU7:58 amSan Juan Luis Munoz Marin Intl
Oct 4
SJU9:03 amSan Juan Luis Munoz Marin Intl
11h 12m
1 stop
MKE7:15 pmMilwaukee-Mitchell
$187
Frontier
Sep 17
MKE8:10 pmMilwaukee-Mitchell
10h 48m
1 stop
SJU7:58 amSan Juan Luis Munoz Marin Intl
Oct 8
SJU9:03 amSan Juan Luis Munoz Marin Intl
11h 12m
1 stop
MKE7:15 pmMilwaukee-Mitchell
$205
Frontier
Aug 18
MKE12:10 pmMilwaukee-Mitchell
6h 42m
1 stop
SJU7:52 pmSan Juan Luis Munoz Marin Intl
Aug 29
SJU3:10 amSan Juan Luis Munoz Marin Intl
9h 03m
1 stop
MKE11:13 amMilwaukee-Mitchell
$396

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 June 20, 2026.
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

Cheapest round-trip

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Sun 9/13

8:10 pm-7:58 am

1 stop10h 48m

San Juan Luis Munoz Marin Intl

Sun 10/4

9:03 am-7:15 pm

1 stop11h 12m

$187

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Thu 9/17

8:10 pm-7:58 am

1 stop10h 48m

San Juan Luis Munoz Marin Intl

Thu 10/8

9:03 am-7:15 pm

1 stop11h 12m

$205

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Sun 8/23

2:10 pm-12:30 am

1 stop9h 20m

San Juan Luis Munoz Marin Intl

Thu 8/27

6:00 am-4:10 pm

1 stop11h 10m

$226

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Sat 8/22

12:58 pm-10:24 pm

1 stop8h 26m

San Juan Luis Munoz Marin Intl

Tue 8/25

3:47 pm-10:59 pm

1 stop8h 12m

$276
Quickest round-trip

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Wed 9/2

2:49 pm-11:59 pm

1 stop8h 10m

San Juan Luis Munoz Marin Intl

Sun 9/6

2:33 pm-9:06 pm

1 stop7h 33m

$281

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Thu 8/6

11:32 am-11:15 pm

1 stop10h 43m

San Juan Luis Munoz Marin Intl

Fri 8/7

7:30 am-9:47 pm

1 stop15h 17m

$291

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Tue 8/4

6:00 am-6:24 pm

2 stops11h 24m

San Juan Luis Munoz Marin Intl

Thu 8/13

2:33 pm-11:14 pm

1 stop9h 41m

$296

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Wed 8/5

5:02 am-6:34 pm

2 stops12h 32m

San Juan Luis Munoz Marin Intl

Fri 8/7

1:38 pm-11:14 pm

2 stops10h 36m

$301

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Fri 8/28

10:21 am-11:59 pm

2 stops12h 38m

San Juan Luis Munoz Marin Intl

Mon 9/7

7:00 am-9:06 pm

1 stop15h 06m

$316

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Wed 9/2

5:00 am-6:34 pm

2 stops12h 34m

San Juan Luis Munoz Marin Intl

Sat 9/5

12:55 am-12:47 pm

1 stop12h 52m

$321

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 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 October, then flying in September is also cheap. Prices for this month can be found on momondo for an average of $326.

How far in advance should I book a flight from Milwaukee 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 $456 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 $384 on momondo.

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

As of June 2026, prices for Milwaukee to San Juan Luis Munoz Marin Intl Airport flights are approximately 8% 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

Fastest flight time

7h 08m

Direct flights

None
The fastest flight from Milwaukee to San Juan Luis Munoz Marin Intl Airport takes 7h 08m
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

Frequently asked questions about flying from Milwaukee to San Juan Luis Munoz Marin Intl Airport

  • 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 7h 08m 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
DeltaPriceFrom $118Free CancellationRating
7.8
8,420 reviews
Search Delta flights
FrontierPriceFrom $156Free CancellationRating
5.6
2,877 reviews
Search Frontier flights
United AirlinesPriceFrom $235Free CancellationRating
7.4
9,865 reviews
Search United Airlines flights
American AirlinesPriceFrom $256Free CancellationRating
7.1
11,715 reviews
Search American Airlines flights
SouthwestPriceFrom $316Free CancellationRating
7.9
4,241 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
Humacao
Rio Grande
Caguas
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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