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Cheap flights from Milwaukee to San Juan from $101

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 3/24. 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.
Southwest Logo
3:35 pm - 11:40 pm
MKE
-
SJU
7h 05m
1 stop
Southwest Logo
2:00 pm - 10:35 pm
SJU
-
MKE
9h 35m
2 stops
$277Southwest
Sat, May 9 - Wed, May 13
Frontier Logo
12:21 pm - 2:01 am
MKE
-
SJU
12h 40m
1 stop
Frontier Logo
3:08 am - 11:08 am
SJU
-
MKE
9h 00m
1 stop
$279Frontier
Mon, May 4 - Wed, May 6
United Airlines Logo
10:45 am - 9:24 pm
MKE
-
SJU
9h 39m
2 stops
United Airlines Logo
1:00 am - 9:45 am
SJU
-
MKE
9h 45m
2 stops
$282United Airlines
Tue, Apr 28 - Wed, Apr 29
Southwest Logo
3:35 pm - 11:40 pm
MKE
-
SJU
7h 05m
1 stop
Southwest Logo
6:25 am - 7:25 pm
SJU
-
MKE
14h 00m
1 stop
$283Southwest
Sat, May 2 - Sat, May 9
American Airlines Logo
5:06 am - 3:35 pm
MKE
-
SJU
9h 29m
2 stops
American Airlines Logo
7:25 am - 5:51 pm
SJU
-
MKE
11h 26m
1 stop
$286American Airlines
Sat, Apr 25 - Fri, May 1
American Airlines Logo
5:06 am - 8:51 pm
MKE
-
SJU
14h 45m
2 stops
American Airlines Logo
7:25 am - 6:00 pm
SJU
-
MKE
11h 35m
2 stops
$295American Airlines
Tue, May 5 - Wed, May 6
Southwest Logo
2:35 pm - 11:55 pm
MKE
-
SJU
8h 20m
1 stop
Southwest Logo
3:45 pm - 10:20 pm
SJU
-
MKE
7h 35m
1 stop
$296Southwest
Sat, Jul 11 - Tue, Jul 14
American Airlines Logo
1:10 pm - 10:05 pm
MKE
-
SJU
7h 55m
1 stop
American Airlines Logo
11:59 pm - 10:59 am
SJU
-
MKE
12h 00m
1 stop
$300American Airlines
Sat, May 2 - Wed, May 6
Frontier Logo
1:37 pm - 7:56 am
MKE
-
SJU
17h 19m
1 stop
Frontier Logo
6:30 am - 11:26 am
SJU
-
MKE
29h 56m
1 stop
$301Frontier
Sat, Apr 11 - Wed, Apr 15
American Airlines Logo
8:11 am - 8:51 pm
MKE
-
SJU
11h 40m
2 stops
American Airlines Logo
5:45 am - 6:00 pm
SJU
-
MKE
13h 15m
2 stops
$303American Airlines
Sat, May 2 - Fri, May 8

Southwest flights from Milwaukee to San Juan

Our best Southwest deals on Milwaukee to San Juan flight tickets
Southwest
May 9
MKE3:35 pmMilwaukee-Mitchell
7h 05m
1 stop
SJU11:40 pmSan Juan Luis Munoz Marin Intl
May 13
SJU2:00 pmSan Juan Luis Munoz Marin Intl
9h 35m
2 stops
MKE10:35 pmMilwaukee-Mitchell
$277
Southwest
May 2
MKE3:35 pmMilwaukee-Mitchell
7h 05m
1 stop
SJU11:40 pmSan Juan Luis Munoz Marin Intl
May 9
SJU6:25 amSan Juan Luis Munoz Marin Intl
14h 00m
1 stop
MKE7:25 pmMilwaukee-Mitchell
$283
Southwest
Jul 11
MKE2:35 pmMilwaukee-Mitchell
8h 20m
1 stop
SJU11:55 pmSan Juan Luis Munoz Marin Intl
Jul 14
SJU3:45 pmSan Juan Luis Munoz Marin Intl
7h 35m
1 stop
MKE10:20 pmMilwaukee-Mitchell
$296

Frontier flights from Milwaukee to San Juan

Our best Frontier deals on Milwaukee to San Juan flight tickets
Frontier
May 4
MKE12:21 pmMilwaukee-Mitchell
12h 40m
1 stop
SJU2:01 amSan Juan Luis Munoz Marin Intl
May 6
SJU3:08 amSan Juan Luis Munoz Marin Intl
9h 00m
1 stop
MKE11:08 amMilwaukee-Mitchell
$279
Frontier
Mar 9
MKE12:36 pmMilwaukee-Mitchell
12h 22m
1 stop
SJU1:58 amSan Juan Luis Munoz Marin Intl
Mar 11
SJU10:04 amSan Juan Luis Munoz Marin Intl
8h 46m
1 stop
MKE5:50 pmMilwaukee-Mitchell
$295
Frontier
Apr 11
MKE1:37 pmMilwaukee-Mitchell
17h 19m
1 stop
SJU7:56 amSan Juan Luis Munoz Marin Intl
Apr 15
SJU6:30 amSan Juan Luis Munoz Marin Intl
29h 56m
1 stop
MKE11:26 amMilwaukee-Mitchell
$301

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 March 7, 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

Cheapest round-trip

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Sat 5/9

3:35 pm-11:40 pm

1 stop7h 05m

San Juan Luis Munoz Marin Intl

Wed 5/13

2:00 pm-10:35 pm

2 stops9h 35m

$277

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Mon 5/4

12:21 pm-2:01 am

1 stop12h 40m

San Juan Luis Munoz Marin Intl

Wed 5/6

3:08 am-11:08 am

1 stop9h 00m

$279

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Tue 4/28

10:45 am-9:24 pm

2 stops9h 39m

San Juan Luis Munoz Marin Intl

Wed 4/29

1:00 am-9:45 am

2 stops9h 45m

$282

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Sat 5/2

3:35 pm-11:40 pm

1 stop7h 05m

San Juan Luis Munoz Marin Intl

Sat 5/9

6:25 am-7:25 pm

1 stop14h 00m

$283

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Sat 4/25

5:06 am-3:35 pm

2 stops9h 29m

San Juan Luis Munoz Marin Intl

Fri 5/1

7:25 am-5:51 pm

1 stop11h 26m

$286

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Tue 5/5

5:06 am-8:51 pm

2 stops14h 45m

San Juan Luis Munoz Marin Intl

Wed 5/6

7:25 am-6:00 pm

2 stops11h 35m

$295
Quickest round-trip

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Sat 7/11

2:35 pm-11:55 pm

1 stop8h 20m

San Juan Luis Munoz Marin Intl

Tue 7/14

3:45 pm-10:20 pm

1 stop7h 35m

$296

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Sat 5/2

1:10 pm-10:05 pm

1 stop7h 55m

San Juan Luis Munoz Marin Intl

Wed 5/6

11:59 pm-10:59 am

1 stop12h 00m

$300

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Sat 4/11

1:37 pm-7:56 am

1 stop17h 19m

San Juan Luis Munoz Marin Intl

Wed 4/15

6:30 am-11:26 am

1 stop29h 56m

$301

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Sat 5/2

8:11 am-8:51 pm

2 stops11h 40m

San Juan Luis Munoz Marin Intl

Fri 5/8

5:45 am-6:00 pm

2 stops13h 15m

$303

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 $317.

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 $442 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 $334 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 20m

Direct flights

None
The fastest flight from Milwaukee to San Juan takes 6h 20m
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 20m.

  • 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 $101Free CancellationRating
5.7
3,040 reviews
Search Frontier flights
DeltaPriceFrom $112Free CancellationRating
7.9
8,270 reviews
Search Delta flights
United AirlinesPriceFrom $158Free CancellationRating
7.4
9,405 reviews
Search United Airlines flights
Spirit AirlinesPriceFrom $208Free CancellationRating
6.3
8,498 reviews
Search Spirit Airlines flights
American AirlinesPriceFrom $256Free CancellationRating
7.1
11,399 reviews
Search American Airlines flights
SouthwestPriceFrom $315Free CancellationRating
8.0
4,311 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.

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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