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Cheap flights from Milwaukee to San Juan from $69

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.
1 adult
0 bags

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Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
10:13 am - 8:57 pmMKE-SJU
8h 44m1 stop
Delta Logo
6:15 am - 11:15 amSJU-MKE
7h 00m1 stop
$235Delta
Find Deal
Tue, Feb 3 - Thu, Feb 26
Frontier Logo
6:02 pm - 2:50 amMKE-SJU
6h 48m1 stop
Frontier Logo
11:05 am - 6:45 pmSJU-MKE
9h 40m1 stop
$239Frontier
Find Deal
Wed, Jan 28 - Thu, Feb 5
American Airlines Logo
6:00 am - 8:50 pmMKE-SJU
12h 50m2 stops
American Airlines Logo
6:00 am - 10:05 pmSJU-MKE
18h 05m1 stop
$240American Airlines
Find Deal
Mon, Feb 2 - Wed, Feb 11
Frontier Logo
6:02 pm - 9:55 amMKE-SJU
13h 53m1 stop
Frontier Logo
3:55 am - 5:04 pmSJU-MKE
15h 09m1 stop
$241Frontier
Find Deal
Tue, Jan 20 - Mon, Jan 26
Frontier Logo
7:40 pm - 8:24 pmMKE-SJU
22h 44m1 stop
Frontier Logo
3:55 am - 5:04 pmSJU-MKE
15h 09m1 stop
$242Frontier
Find Deal
Fri, Jan 16 - Mon, Jan 19
Frontier Logo
7:56 pm - 1:49 pmMKE-SJU
15h 53m1 stop
Frontier Logo
3:55 am - 6:45 pmSJU-MKE
16h 50m1 stop
$251Frontier
Find Deal
Fri, Jan 9 - Sun, Jan 11
United Airlines Logo
11:30 am - 9:00 pmMKE-SJU
7h 30m1 stop
United Airlines Logo
2:05 am - 1:53 pmSJU-MKE
13h 48m2 stops
$252United Airlines
Find Deal
Tue, Jan 20 - Mon, Jan 26
Frontier Logo
7:40 pm - 8:24 pmMKE-SJU
22h 44m1 stop
Frontier Logo
3:55 am - 5:04 pmSJU-MKE
15h 09m1 stop
$257Frontier
Find Deal
Fri, Jan 16 - Fri, Jan 23
Multiple Airlines Logo
10:34 am - 2:50 amMKE-SJU
14h 16m1 stop
Multiple Airlines Logo
3:55 am - 11:13 amSJU-MKE
9h 18m1 stop
$260Multiple Airlines
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Thu, Dec 11 - Sun, Dec 21
United Airlines Logo
9:44 am - 12:36 amMKE-SJU
12h 52m2 stops
United Airlines Logo
4:52 pm - 10:43 pmSJU-MKE
7h 51m1 stop
$261United Airlines
Find Deal
Mon, Mar 2 - Fri, Mar 6

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
Jan 28
MKE6:02 pmMilwaukee-Mitchell
6h 48m
1 stop
SJU2:50 amSan Juan Luis Munoz Marin Intl
Feb 5
SJU11:05 amSan Juan Luis Munoz Marin Intl
9h 40m
1 stop
MKE6:45 pmMilwaukee-Mitchell
$239
Find similar
Frontier
Jan 20
MKE6:02 pmMilwaukee-Mitchell
13h 53m
1 stop
SJU9:55 amSan Juan Luis Munoz Marin Intl
Jan 26
SJU3:55 amSan Juan Luis Munoz Marin Intl
15h 09m
1 stop
MKE5:04 pmMilwaukee-Mitchell
$241
Find similar
Frontier
Jan 16
MKE7:40 pmMilwaukee-Mitchell
22h 44m
1 stop
SJU8:24 pmSan Juan Luis Munoz Marin Intl
Jan 19
SJU3:55 amSan Juan Luis Munoz Marin Intl
15h 09m
1 stop
MKE5:04 pmMilwaukee-Mitchell
$242
Find similar

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
Feb 2
MKE6:00 amMilwaukee-Mitchell
12h 50m
2 stops
SJU8:50 pmSan Juan Luis Munoz Marin Intl
Feb 11
SJU6:00 amSan Juan Luis Munoz Marin Intl
18h 05m
1 stop
MKE10:05 pmMilwaukee-Mitchell
$240
Find similar
American Airlines
Jan 6
MKE6:11 amMilwaukee-Mitchell
12h 39m
2 stops
SJU8:50 pmSan Juan Luis Munoz Marin Intl
Feb 5
SJU6:00 amSan Juan Luis Munoz Marin Intl
11h 56m
1 stop
MKE3:56 pmMilwaukee-Mitchell
$308
Find similar
American Airlines
Feb 2
MKE6:00 amMilwaukee-Mitchell
9h 03m
2 stops
SJU5:03 pmSan Juan Luis Munoz Marin Intl
Feb 11
SJU6:00 amSan Juan Luis Munoz Marin Intl
11h 56m
2 stops
MKE3:56 pmMilwaukee-Mitchell
$314
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 November 13, 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 2/3

10:13 am-8:57 pm

1 stop8h 44m

San Juan Luis Munoz Marin Intl

Thu 2/26

6:15 am-11:15 am

1 stop7h 00m

$235

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Wed 1/28

6:02 pm-2:50 am

1 stop6h 48m

San Juan Luis Munoz Marin Intl

Thu 2/5

11:05 am-6:45 pm

1 stop9h 40m

$239

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Mon 2/2

6:00 am-8:50 pm

2 stops12h 50m

San Juan Luis Munoz Marin Intl

Wed 2/11

6:00 am-10:05 pm

1 stop18h 05m

$240

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Tue 1/20

6:02 pm-9:55 am

1 stop13h 53m

San Juan Luis Munoz Marin Intl

Mon 1/26

3:55 am-5:04 pm

1 stop15h 09m

$241

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Fri 1/16

7:40 pm-8:24 pm

1 stop22h 44m

San Juan Luis Munoz Marin Intl

Mon 1/19

3:55 am-5:04 pm

1 stop15h 09m

$242

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Fri 1/9

7:56 pm-1:49 pm

1 stop15h 53m

San Juan Luis Munoz Marin Intl

Sun 1/11

3:55 am-6:45 pm

1 stop16h 50m

$251

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Tue 1/20

11:30 am-9:00 pm

1 stop7h 30m

San Juan Luis Munoz Marin Intl

Mon 1/26

2:05 am-1:53 pm

2 stops13h 48m

$252

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Fri 1/16

7:40 pm-8:24 pm

1 stop22h 44m

San Juan Luis Munoz Marin Intl

Fri 1/23

3:55 am-5:04 pm

1 stop15h 09m

$257

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Thu 12/11

10:34 am-2:50 am

1 stop14h 16m

San Juan Luis Munoz Marin Intl

Sun 12/21

3:55 am-11:13 am

1 stop9h 18m

$260

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Mon 3/2

9:44 am-12:36 am

2 stops12h 52m

San Juan Luis Munoz Marin Intl

Fri 3/6

4:52 pm-10:43 pm

1 stop7h 51m

$261

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 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 $350.

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 $299 on momondo.

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

As of November 2025, prices for Milwaukee to San Juan Luis Munoz Marin Intl Airport flights are approximately 4% cheaper 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 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
3,114 reviews
Search Frontier flights
United AirlinesPriceFrom $202Free CancellationRating
7.4
9,015 reviews
Search United Airlines flights
DeltaPriceFrom $215Free CancellationRating
7.9
8,007 reviews
Search Delta flights
Spirit AirlinesPriceFrom $226Free CancellationRating
6.3
8,139 reviews
Search Spirit Airlines flights
American AirlinesPriceFrom $275Free CancellationRating
7.2
11,050 reviews
Search American Airlines flights
SouthwestPriceFrom $315Free CancellationRating
8.0
4,236 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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