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Cheap flights from Milwaukee to San Juan from $86

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 2/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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.
United Airlines Logo
11:30 am - 12:36 am
MKE
-
SJU
11h 06m2 stops
United Airlines Logo
7:45 am - 2:55 pm
SJU
-
MKE
9h 10m1 stop
$235United Airlines
Sat, Jan 24 - Wed, Jan 28
Frontier Logo
7:42 pm - 9:25 am
MKE
-
SJU
11h 43m1 stop
Frontier Logo
8:00 am - 6:01 pm
SJU
-
MKE
12h 01m1 stop
$236Frontier
Sun, Jan 18 - Wed, Jan 21
Frontier Logo
7:48 pm - 9:54 am
MKE
-
SJU
12h 06m1 stop
Frontier Logo
8:00 am - 6:06 pm
SJU
-
MKE
12h 06m1 stop
$247Frontier
Sat, Jan 31 - Mon, Feb 9
Frontier Logo
7:37 pm - 9:25 am
MKE
-
SJU
11h 48m1 stop
Frontier Logo
8:00 am - 6:53 pm
SJU
-
MKE
12h 53m1 stop
$252Frontier
Thu, Jan 15 - Sat, Jan 24
United Airlines Logo
10:30 am - 10:22 pm
MKE
-
SJU
9h 52m2 stops
United Airlines Logo
2:05 am - 10:46 am
SJU
-
MKE
10h 41m1 stop
$253United Airlines
Wed, Jan 28 - Mon, Feb 2
Frontier Logo
6:35 pm - 1:58 am
MKE
-
SJU
6h 23m1 stop
Frontier Logo
3:08 am - 11:41 am
SJU
-
MKE
9h 33m1 stop
$261Frontier
Wed, Mar 11 - Sun, Mar 22
Frontier Logo
6:35 pm - 1:58 am
MKE
-
SJU
6h 23m1 stop
Frontier Logo
3:08 am - 11:41 am
SJU
-
MKE
9h 33m1 stop
$268Frontier
Wed, Mar 11 - Sun, Mar 15
Frontier Logo
8:20 pm - 9:57 am
MKE
-
SJU
12h 37m1 stop
Frontier Logo
6:30 am - 5:50 pm
SJU
-
MKE
12h 20m1 stop
$269Frontier
Mon, Mar 16 - Wed, Mar 25
Frontier Logo
7:56 pm - 11:15 am
MKE
-
SJU
13h 19m1 stop
Frontier Logo
10:35 am - 6:52 pm
SJU
-
MKE
10h 17m1 stop
$270Frontier
Fri, Jan 9 - Fri, Jan 16
Multiple Airlines Logo
7:48 pm - 9:54 am
MKE
-
SJU
12h 06m1 stop
Multiple Airlines Logo
8:05 pm - 5:58 pm
SJU
-
MKE
23h 53m1 stop
$271Multiple Airlines
Sat, Jan 24 - Mon, Feb 2

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 14
SJU7:34 pmSan Juan Luis Munoz Marin Intl
25h 13m
1 stop
MKE6:47 pmMilwaukee-Mitchell
$235
Find similar
Frontier
Jan 18
MKE7:42 pmMilwaukee-Mitchell
11h 43m
1 stop
SJU9:25 amSan Juan Luis Munoz Marin Intl
Jan 21
SJU8:00 amSan Juan Luis Munoz Marin Intl
12h 01m
1 stop
MKE6:01 pmMilwaukee-Mitchell
$236
Find similar
Frontier
Jan 31
MKE7:48 pmMilwaukee-Mitchell
12h 06m
1 stop
SJU9:54 amSan Juan Luis Munoz Marin Intl
Feb 9
SJU8:00 amSan Juan Luis Munoz Marin Intl
12h 06m
1 stop
MKE6:06 pmMilwaukee-Mitchell
$247
Find similar

Delta flights from Milwaukee to San Juan

Our best Delta deals on Milwaukee to San Juan flight tickets
Delta
Feb 3
MKE5:30 amMilwaukee-Mitchell
7h 01m
1 stop
SJU2:31 pmSan Juan Luis Munoz Marin Intl
Feb 26
SJU6:15 amSan Juan Luis Munoz Marin Intl
10h 35m
1 stop
MKE2:50 pmMilwaukee-Mitchell
$235
Find similar
Delta
Jan 28
MKE5:30 amMilwaukee-Mitchell
9h 47m
1 stop
SJU5:17 pmSan Juan Luis Munoz Marin Intl
Feb 5
SJU6:27 pmSan Juan Luis Munoz Marin Intl
7h 17m
1 stop
MKE11:44 pmMilwaukee-Mitchell
$306
Find similar
Delta
Feb 16
MKE12:20 pmMilwaukee-Mitchell
9h 38m
1 stop
SJU11:58 pmSan Juan Luis Munoz Marin Intl
Feb 19
SJU6:15 amSan Juan Luis Munoz Marin Intl
6h 58m
1 stop
MKE11:13 amMilwaukee-Mitchell
$313
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 January 1, 2026.
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

Sat 1/24

11:30 am-12:36 am

2 stops11h 06m

San Juan Luis Munoz Marin Intl

Wed 1/28

7:45 am-2:55 pm

1 stop9h 10m

$235

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Sun 1/18

7:42 pm-9:25 am

1 stop11h 43m

San Juan Luis Munoz Marin Intl

Wed 1/21

8:00 am-6:01 pm

1 stop12h 01m

$236

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

Mon 2/9

8:00 am-6:06 pm

1 stop12h 06m

$247

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Thu 1/15

7:37 pm-9:25 am

1 stop11h 48m

San Juan Luis Munoz Marin Intl

Sat 1/24

8:00 am-6:53 pm

1 stop12h 53m

$252

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Wed 1/28

10:30 am-10:22 pm

2 stops9h 52m

San Juan Luis Munoz Marin Intl

Mon 2/2

2:05 am-10:46 am

1 stop10h 41m

$253

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Wed 3/11

6:35 pm-1:58 am

1 stop6h 23m

San Juan Luis Munoz Marin Intl

Sun 3/22

3:08 am-11:41 am

1 stop9h 33m

$261

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Wed 3/11

6:35 pm-1:58 am

1 stop6h 23m

San Juan Luis Munoz Marin Intl

Sun 3/15

3:08 am-11:41 am

1 stop9h 33m

$268

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Mon 3/16

8:20 pm-9:57 am

1 stop12h 37m

San Juan Luis Munoz Marin Intl

Wed 3/25

6:30 am-5:50 pm

1 stop12h 20m

$269

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Fri 1/9

7:56 pm-11:15 am

1 stop13h 19m

San Juan Luis Munoz Marin Intl

Fri 1/16

10:35 am-6:52 pm

1 stop10h 17m

$270

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Sat 1/24

7:48 pm-9:54 am

1 stop12h 06m

San Juan Luis Munoz Marin Intl

Mon 2/2

8:05 pm-5:58 pm

1 stop23h 53m

$271

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 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.

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 $438 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 $343 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 40m

Direct flights

None
The fastest flight from Milwaukee to San Juan takes 6h 40m
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 40m.

  • 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
5.7
3,066 reviews
Search Frontier flights
DeltaPriceFrom $188Free CancellationRating
7.9
8,017 reviews
Search Delta flights
United AirlinesPriceFrom $215Free CancellationRating
7.4
9,128 reviews
Search United Airlines flights
Spirit AirlinesPriceFrom $226Free CancellationRating
6.3
8,253 reviews
Search Spirit Airlines flights
American AirlinesPriceFrom $270Free CancellationRating
7.2
11,071 reviews
Search American Airlines flights
SouthwestPriceFrom $315Free CancellationRating
8.0
4,252 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