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Cheap flights from Milwaukee to San Juan from $90

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 2/14. 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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Find the cheapest flights from Milwaukee to San Juan

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
5:30 am - 2:31 pm
MKE
-
SJU
7h 01m1 stop
Delta Logo
6:27 pm - 11:44 pm
SJU
-
MKE
7h 17m1 stop
$235Delta
Tue, Feb 3 - Thu, Feb 5
Frontier Logo
10:53 am - 1:21 am
MKE
-
SJU
12h 28m1 stop
Frontier Logo
6:10 am - 6:45 pm
SJU
-
MKE
14h 35m1 stop
$236Frontier
Fri, Jan 9 - Mon, Jan 12
American Airlines Logo
6:00 am - 8:50 pm
MKE
-
SJU
12h 50m2 stops
American Airlines Logo
6:00 am - 3:57 pm
SJU
-
MKE
11h 57m2 stops
$241American Airlines
Sun, Jan 25 - Tue, Feb 3
Frontier Logo
7:21 pm - 2:50 am
MKE
-
SJU
29h 29m1 stop
Frontier Logo
9:23 pm - 7:14 pm
SJU
-
MKE
23h 51m1 stop
$247Frontier
Tue, Dec 30 - Fri, Jan 9
Frontier Logo
7:48 pm - 9:54 am
MKE
-
SJU
12h 06m1 stop
Frontier Logo
8:00 am - 6:53 pm
SJU
-
MKE
12h 53m1 stop
$251Frontier
Sat, Jan 31 - Sat, Feb 7
Frontier Logo
10:48 am - 10:15 pm
MKE
-
SJU
9h 27m1 stop
Frontier Logo
3:55 am - 6:45 pm
SJU
-
MKE
16h 50m1 stop
$252Frontier
Mon, Jan 5 - Sun, Jan 11
United Airlines Logo
7:00 am - 9:26 pm
MKE
-
SJU
12h 26m2 stops
United Airlines Logo
7:45 am - 2:55 pm
SJU
-
MKE
9h 10m1 stop
$253United Airlines
Wed, Jan 21 - Tue, Jan 27
American Airlines Logo
8:30 am - 9:54 pm
MKE
-
SJU
11h 24m1 stop
American Airlines Logo
6:30 am - 8:24 pm
SJU
-
MKE
15h 54m1 stop
$260American Airlines
Sun, Jan 18 - Wed, Jan 21
Frontier Logo
7:48 pm - 8:58 am
MKE
-
SJU
11h 10m1 stop
Frontier Logo
3:55 am - 11:13 am
SJU
-
MKE
9h 18m1 stop
$263Frontier
Sat, Dec 20 - Sun, Dec 21
Frontier Logo
7:28 pm - 11:59 pm
MKE
-
SJU
26h 31m1 stop
Frontier Logo
4:36 pm - 5:58 pm
SJU
-
MKE
27h 22m1 stop
$265Frontier
Fri, Jan 23 - Mon, Jan 26

United Airlines flights from Milwaukee to San Juan

Our best United Airlines deals on Milwaukee to San Juan flight tickets
United Airlines
Feb 3
MKE10:30 amMilwaukee-Mitchell
12h 06m
2 stops
SJU12:36 amSan Juan Luis Munoz Marin Intl
Feb 25
SJU2:05 amSan Juan Luis Munoz Marin Intl
10h 53m
1 stop
MKE10:58 amMilwaukee-Mitchell
$235
Find similar
United Airlines
Jan 21
MKE7:00 amMilwaukee-Mitchell
12h 26m
2 stops
SJU9:26 pmSan Juan Luis Munoz Marin Intl
Jan 27
SJU7:45 amSan Juan Luis Munoz Marin Intl
9h 10m
1 stop
MKE2:55 pmMilwaukee-Mitchell
$253
Find similar
United Airlines
Jan 13
MKE8:33 amMilwaukee-Mitchell
11h 49m
2 stops
SJU10:22 pmSan Juan Luis Munoz Marin Intl
Jan 21
SJU7:45 amSan Juan Luis Munoz Marin Intl
9h 10m
1 stop
MKE2:55 pmMilwaukee-Mitchell
$270
Find similar

Frontier flights from Milwaukee to San Juan

Our best Frontier deals on Milwaukee to San Juan flight tickets
Frontier
Jan 9
MKE10:53 amMilwaukee-Mitchell
12h 28m
1 stop
SJU1:21 amSan Juan Luis Munoz Marin Intl
Jan 12
SJU6:10 amSan Juan Luis Munoz Marin Intl
14h 35m
1 stop
MKE6:45 pmMilwaukee-Mitchell
$236
Find similar
Frontier
Dec 30
MKE7:21 pmMilwaukee-Mitchell
29h 29m
1 stop
SJU2:50 amSan Juan Luis Munoz Marin Intl
Jan 9
SJU9:23 pmSan Juan Luis Munoz Marin Intl
23h 51m
1 stop
MKE7:14 pmMilwaukee-Mitchell
$247
Find similar
Frontier
Jan 31
MKE7:48 pmMilwaukee-Mitchell
12h 06m
1 stop
SJU9:54 amSan Juan Luis Munoz Marin Intl
Feb 7
SJU8:00 amSan Juan Luis Munoz Marin Intl
12h 53m
1 stop
MKE6:53 pmMilwaukee-Mitchell
$251
Find similar

momondo 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, momondo users made 832,500 searches. Data last updated December 5, 2025.
Use the filters below to find and compare flights from Milwaukee to San Juan that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Tue 2/3

5:30 am-2:31 pm

1 stop7h 01m

San Juan Luis Munoz Marin Intl

Thu 2/5

6:27 pm-11:44 pm

1 stop7h 17m

$235

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Fri 1/9

10:53 am-1:21 am

1 stop12h 28m

San Juan Luis Munoz Marin Intl

Mon 1/12

6:10 am-6:45 pm

1 stop14h 35m

$236

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Sun 1/25

6:00 am-8:50 pm

2 stops12h 50m

San Juan Luis Munoz Marin Intl

Tue 2/3

6:00 am-3:57 pm

2 stops11h 57m

$241

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Tue 12/30

7:21 pm-2:50 am

1 stop29h 29m

San Juan Luis Munoz Marin Intl

Fri 1/9

9:23 pm-7:14 pm

1 stop23h 51m

$247

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Sat 1/31

7:48 pm-9:54 am

1 stop12h 06m

San Juan Luis Munoz Marin Intl

Sat 2/7

8:00 am-6:53 pm

1 stop12h 53m

$251

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Mon 1/5

10:48 am-10:15 pm

1 stop9h 27m

San Juan Luis Munoz Marin Intl

Sun 1/11

3:55 am-6:45 pm

1 stop16h 50m

$252

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Wed 1/21

7:00 am-9:26 pm

2 stops12h 26m

San Juan Luis Munoz Marin Intl

Tue 1/27

7:45 am-2:55 pm

1 stop9h 10m

$253

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Sun 1/18

8:30 am-9:54 pm

1 stop11h 24m

San Juan Luis Munoz Marin Intl

Wed 1/21

6:30 am-8:24 pm

1 stop15h 54m

$260

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Sat 12/20

7:48 pm-8:58 am

1 stop11h 10m

San Juan Luis Munoz Marin Intl

Sun 12/21

3:55 am-11:13 am

1 stop9h 18m

$263

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Fri 1/23

7:28 pm-11:59 pm

1 stop26h 31m

San Juan Luis Munoz Marin Intl

Mon 1/26

4:36 pm-5:58 pm

1 stop27h 22m

$265

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

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?

What is the cheapest month to fly to San Juan?

If you’re not able to fly to San Juan in September, then October is your next best option. Flight prices from Milwaukee to San Juan during October average around $350.

What is the cheapest day to depart on your flight to San Juan?

The cheapest day to depart from Milwaukee to San Juan is on a Tuesday when prices can be found for as low as $389. The most expensive day to fly to San Juan is Friday, with ticket prices averaging around $477.

What is the cheapest time of day to depart on your flight to San Juan?

The cheapest time of day to fly to San Juan is in the evening when flights can be purchased for as low as $360. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $458 on average. Flights to San Juan from Milwaukee at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.

How far in advance should I book a flight to San Juan?

You are more likely to see cheaper flights to San Juan from Milwaukee when booking weeks ahead of your departure date. In general, you can expect to find flights to San Juan for around $437 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Juan from Milwaukee for as low as $331 on momondo.

Cheap Milwaukee to San Juan flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Milwaukee to San Juan

Fastest flight time

6h 59m

Direct flights

None
The fastest flight from Milwaukee to San Juan takes 6h 59m
There are no direct flights from Milwaukee to San Juan. There are no popular flight routes from Milwaukee to San Juan.
Search flight deals

  • How far is Milwaukee-Mitchell to San Juan by plane?

    The distance between Milwaukee-Mitchell and San Juan is about 2119.6 mi. A reasonable flight in good conditions will take 6h 41m.

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

    Prices for flights from Milwaukee-Mitchell Airport to San Juan are updated daily.

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

  • How old do you have to be to fly from Milwaukee-Mitchell Airport to San Juan?

    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.

  • What documentation or ID do you need to fly to San Juan?

    The necessary travel and health documents for your San Juan trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Milwaukee to San Juan

Compare and see reviews for airlines that fly from Milwaukee to San Juan with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $129Free CancellationRating
5.8
3,090 reviews
Search Frontier flights
DeltaPriceFrom $208Free CancellationRating
7.9
8,010 reviews
Search Delta flights
United AirlinesPriceFrom $215Free CancellationRating
7.4
9,064 reviews
Search United Airlines flights
Spirit AirlinesPriceFrom $226Free CancellationRating
6.3
8,156 reviews
Search Spirit Airlines flights
American AirlinesPriceFrom $274Free CancellationRating
7.2
11,047 reviews
Search American Airlines flights
SouthwestPriceFrom $315Free CancellationRating
8.0
4,251 reviews
Search Southwest flights

Why use momondo?

Why should I use momondo to find a flight deal from Milwaukee to San Juan?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Milwaukee to San Juan. momondo saves you time and could save you money on your trip.

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

Yes. momondo allows you to filter the results for Milwaukee to San Juan flights to just show those with flexible booking policies.

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

Once all potential Milwaukee to San Juan flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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.

An easier way to manage your San Juan trip

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Find better results for your trip to Puerto Rico

Fly into one of these airports located in San Juan

Airports listed have a maximum distance of 7.1 mi from San Juan
San Juan Isla Grande Airport
San Juan Luis Munoz Marin Intl Airport