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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 3/17. 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.
Frontier Logo
5:47 pm - 12:51 pm
MKE
-
SJU
17h 04m
1 stop
Frontier Logo
6:30 am - 5:50 pm
SJU
-
MKE
12h 20m
1 stop
$259Frontier
sáb., mar. 7 - mié., mar. 11
Southwest Logo
9:25 am - 6:10 pm
MKE
-
SJU
7h 45m
1 stop
Southwest Logo
3:45 pm - 10:50 pm
SJU
-
MKE
8h 05m
1 stop
$266Southwest
mié., abr. 8 - mié., abr. 15
Frontier Logo
9:01 pm - 1:58 am
MKE
-
SJU
27h 57m
1 stop
Frontier Logo
6:30 am - 11:41 am
SJU
-
MKE
30h 11m
1 stop
$276Frontier
dom., mar. 8 - dom., mar. 15
Frontier Logo
6:35 pm - 1:58 am
MKE
-
SJU
6h 23m
1 stop
Frontier Logo
3:08 am - 11:41 am
SJU
-
MKE
9h 33m
1 stop
$278Frontier
mié., mar. 11 - dom., mar. 15
United Airlines Logo
6:49 am - 2:44 pm
MKE
-
SJU
6h 55m
1 stop
United Airlines Logo
1:00 am - 2:27 pm
SJU
-
MKE
14h 27m
2 stops
$279United Airlines
lun., may. 4 - vie., may. 8
Frontier Logo
6:39 pm - 10:09 am
MKE
-
SJU
13h 30m
1 stop
Frontier Logo
3:58 am - 12:19 pm
SJU
-
MKE
10h 21m
1 stop
$280Frontier
dom., mar. 1 - vie., mar. 6
United Airlines Logo
10:45 am - 11:50 pm
MKE
-
SJU
12h 05m
2 stops
United Airlines Logo
1:00 am - 9:45 am
SJU
-
MKE
9h 45m
2 stops
$287United Airlines
sáb., abr. 25 - vie., may. 1
Frontier Logo
4:39 pm - 2:53 am
MKE
-
SJU
8h 14m
1 stop
Frontier Logo
10:04 am - 5:50 pm
SJU
-
MKE
8h 46m
1 stop
$288Frontier
mié., mar. 4 - mié., mar. 11
Frontier Logo
7:42 pm - 12:59 pm
MKE
-
SJU
16h 17m
1 stop
Frontier Logo
7:15 am - 6:47 pm
SJU
-
MKE
12h 32m
1 stop
$291Frontier
vie., may. 1 - lun., may. 4
Southwest Logo
5:00 am - 7:05 pm
MKE
-
SJU
13h 05m
1 stop
Southwest Logo
11:40 am - 11:45 pm
SJU
-
MKE
13h 05m
1 stop
$295Southwest
sáb., may. 2 - dom., may. 10

Southwest flights from Milwaukee to San Juan

Our best Southwest deals on Milwaukee to San Juan flight tickets
Southwest
Apr 8
MKE9:25 amMilwaukee-Mitchell
7h 45m
1 stop
SJU6:10 pmSan Juan Luis Munoz Marin Intl
Apr 15
SJU3:45 pmSan Juan Luis Munoz Marin Intl
8h 05m
1 stop
MKE10:50 pmMilwaukee-Mitchell
$266
Southwest
May 2
MKE5:00 amMilwaukee-Mitchell
13h 05m
1 stop
SJU7:05 pmSan Juan Luis Munoz Marin Intl
May 10
SJU11:40 amSan Juan Luis Munoz Marin Intl
13h 05m
1 stop
MKE11:45 pmMilwaukee-Mitchell
$295
Southwest
Apr 10
MKE12:40 pmMilwaukee-Mitchell
10h 15m
1 stop
SJU11:55 pmSan Juan Luis Munoz Marin Intl
Apr 16
SJU2:00 pmSan Juan Luis Munoz Marin Intl
10h 00m
2 stops
MKE11:00 pmMilwaukee-Mitchell
$315

United Airlines flights from Milwaukee to San Juan

Our best United Airlines deals on Milwaukee to San Juan flight tickets
United Airlines
May 4
MKE6:49 amMilwaukee-Mitchell
6h 55m
1 stop
SJU2:44 pmSan Juan Luis Munoz Marin Intl
May 8
SJU1:00 amSan Juan Luis Munoz Marin Intl
14h 27m
2 stops
MKE2:27 pmMilwaukee-Mitchell
$279
United Airlines
Apr 25
MKE10:45 amMilwaukee-Mitchell
12h 05m
2 stops
SJU11:50 pmSan Juan Luis Munoz Marin Intl
May 1
SJU1:00 amSan Juan Luis Munoz Marin Intl
9h 45m
2 stops
MKE9:45 amMilwaukee-Mitchell
$287
United Airlines
May 2
MKE10:20 amMilwaukee-Mitchell
12h 30m
2 stops
SJU11:50 pmSan Juan Luis Munoz Marin Intl
May 10
SJU3:56 pmSan Juan Luis Munoz Marin Intl
7h 49m
1 stop
MKE10:45 pmMilwaukee-Mitchell
$323

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 febrero 14, 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

sáb. 3/7

5:47 pm-12:51 pm

1 stop17h 04m

San Juan Luis Munoz Marin Intl

mié. 3/11

6:30 am-5:50 pm

1 stop12h 20m

$259

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

mié. 4/8

9:25 am-6:10 pm

1 stop7h 45m

San Juan Luis Munoz Marin Intl

mié. 4/15

3:45 pm-10:50 pm

1 stop8h 05m

$266

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

dom. 3/8

9:01 pm-1:58 am

1 stop27h 57m

San Juan Luis Munoz Marin Intl

dom. 3/15

6:30 am-11:41 am

1 stop30h 11m

$276

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

mié. 3/11

6:35 pm-1:58 am

1 stop6h 23m

San Juan Luis Munoz Marin Intl

dom. 3/15

3:08 am-11:41 am

1 stop9h 33m

$278

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

lun. 5/4

6:49 am-2:44 pm

1 stop6h 55m

San Juan Luis Munoz Marin Intl

vie. 5/8

1:00 am-2:27 pm

2 stops14h 27m

$279

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

dom. 3/1

6:39 pm-10:09 am

1 stop13h 30m

San Juan Luis Munoz Marin Intl

vie. 3/6

3:58 am-12:19 pm

1 stop10h 21m

$280

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

sáb. 4/25

10:45 am-11:50 pm

2 stops12h 05m

San Juan Luis Munoz Marin Intl

vie. 5/1

1:00 am-9:45 am

2 stops9h 45m

$287

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

mié. 3/4

4:39 pm-2:53 am

1 stop8h 14m

San Juan Luis Munoz Marin Intl

mié. 3/11

10:04 am-5:50 pm

1 stop8h 46m

$288

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

vie. 5/1

7:42 pm-12:59 pm

1 stop16h 17m

San Juan Luis Munoz Marin Intl

lun. 5/4

7:15 am-6:47 pm

1 stop12h 32m

$291

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

sáb. 5/2

5:00 am-7:05 pm

1 stop13h 05m

San Juan Luis Munoz Marin Intl

dom. 5/10

11:40 am-11:45 pm

1 stop13h 05m

$295

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 $444 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 $383 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 22m

Direct flights

None
The fastest flight from Milwaukee to San Juan takes 6h 22m
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 22m.

  • 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 $85Free CancellationRating
5.7
3,052 reviews
Search Frontier flights
DeltaPriceFrom $118Free CancellationRating
7.9
8,203 reviews
Search Delta flights
United AirlinesPriceFrom $182Free CancellationRating
7.4
9,289 reviews
Search United Airlines flights
Spirit AirlinesPriceFrom $195Free CancellationRating
6.3
8,451 reviews
Search Spirit Airlines flights
American AirlinesPriceFrom $266Free CancellationRating
7.2
11,288 reviews
Search American Airlines flights
SouthwestPriceFrom $315Free CancellationRating
8.0
4,284 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