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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 3/10. 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.
American Airlines Logo
7:01 am - 8:51 pm
MKE
-
SJU
12h 50m
2 stops
American Airlines Logo
7:25 am - 5:51 pm
SJU
-
MKE
11h 26m
1 stop
$266American Airlines
Mon, Apr 13 - Fri, Apr 17
American Airlines Logo
6:00 am - 8:51 pm
MKE
-
SJU
13h 51m
2 stops
American Airlines Logo
7:25 am - 6:00 pm
SJU
-
MKE
11h 35m
2 stops
$270American Airlines
Tue, Apr 14 - Sat, Apr 18
Frontier Logo
7:53 pm - 11:29 pm
MKE
-
SJU
26h 36m
1 stop
Frontier Logo
10:59 am - 11:26 am
SJU
-
MKE
25h 27m
1 stop
$272Frontier
Sat, Apr 18 - Wed, Apr 22
Frontier Logo
9:01 pm - 8:54 am
MKE
-
SJU
10h 53m
1 stop
Frontier Logo
6:30 am - 5:50 pm
SJU
-
MKE
12h 20m
1 stop
$274Frontier
Sun, Mar 8 - Wed, Mar 11
Southwest Logo
3:30 pm - 11:40 pm
MKE
-
SJU
7h 10m
1 stop
Southwest Logo
6:50 am - 10:30 pm
SJU
-
MKE
16h 40m
2 stops
$277Southwest
Mon, May 4 - Thu, May 7
Frontier Logo
8:20 pm - 2:03 am
MKE
-
SJU
28h 43m
1 stop
Frontier Logo
5:30 am - 5:02 pm
SJU
-
MKE
12h 32m
1 stop
$278Frontier
Mon, Mar 16 - Fri, Mar 20
Frontier Logo
6:35 pm - 2:03 am
MKE
-
SJU
6h 28m
1 stop
Frontier Logo
9:41 pm - 7:30 am
SJU
-
MKE
10h 49m
1 stop
$279Frontier
Tue, Mar 10 - Sat, Mar 14
Frontier Logo
1:37 pm - 7:56 am
MKE
-
SJU
17h 19m
1 stop
Frontier Logo
3:19 pm - 11:26 am
SJU
-
MKE
21h 07m
1 stop
$280Frontier
Sat, Apr 11 - Wed, Apr 15
United Airlines Logo
10:45 am - 9:24 pm
MKE
-
SJU
9h 39m
2 stops
United Airlines Logo
1:00 am - 10:04 am
SJU
-
MKE
10h 04m
1 stop
$284United Airlines
Tue, Apr 28 - Fri, May 1
Frontier Logo
7:34 pm - 2:01 am
MKE
-
SJU
29h 27m
1 stop
Frontier Logo
8:00 am - 8:38 am
SJU
-
MKE
25h 38m
1 stop
$288Frontier
Fri, Apr 17 - Sat, Apr 25

United Airlines flights from Milwaukee to San Juan

Our best United Airlines deals on Milwaukee to San Juan flight tickets
United Airlines
Apr 28
MKE10:45 amMilwaukee-Mitchell
9h 39m
2 stops
SJU9:24 pmSan Juan Luis Munoz Marin Intl
May 1
SJU1:00 amSan Juan Luis Munoz Marin Intl
10h 04m
1 stop
MKE10:04 amMilwaukee-Mitchell
$284
United Airlines
Apr 14
MKE10:45 amMilwaukee-Mitchell
9h 39m
2 stops
SJU9:24 pmSan Juan Luis Munoz Marin Intl
Apr 22
SJU1:00 amSan Juan Luis Munoz Marin Intl
11h 32m
2 stops
MKE11:32 amMilwaukee-Mitchell
$300
United Airlines
Apr 11
MKE10:45 amMilwaukee-Mitchell
9h 39m
2 stops
SJU9:24 pmSan Juan Luis Munoz Marin Intl
Apr 14
SJU1:00 amSan Juan Luis Munoz Marin Intl
10h 10m
1 stop
MKE10:10 amMilwaukee-Mitchell
$326

Frontier flights from Milwaukee to San Juan

Our best Frontier deals on Milwaukee to San Juan flight tickets
Frontier
Mar 4
MKE4:39 pmMilwaukee-Mitchell
8h 14m
1 stop
SJU2:53 amSan Juan Luis Munoz Marin Intl
Mar 12
SJU12:07 pmSan Juan Luis Munoz Marin Intl
8h 59m
1 stop
MKE8:06 pmMilwaukee-Mitchell
$270
Frontier
Apr 18
MKE7:53 pmMilwaukee-Mitchell
26h 36m
1 stop
SJU11:29 pmSan Juan Luis Munoz Marin Intl
Apr 22
SJU10:59 amSan Juan Luis Munoz Marin Intl
25h 27m
1 stop
MKE11:26 amMilwaukee-Mitchell
$272
Frontier
Mar 8
MKE9:01 pmMilwaukee-Mitchell
10h 53m
1 stop
SJU8:54 amSan Juan Luis Munoz Marin Intl
Mar 11
SJU6:30 amSan Juan Luis Munoz Marin Intl
12h 20m
1 stop
MKE5:50 pmMilwaukee-Mitchell
$274

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 February 24, 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

Mon 4/13

7:01 am-8:51 pm

2 stops12h 50m

San Juan Luis Munoz Marin Intl

Fri 4/17

7:25 am-5:51 pm

1 stop11h 26m

$266

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Tue 4/14

6:00 am-8:51 pm

2 stops13h 51m

San Juan Luis Munoz Marin Intl

Sat 4/18

7:25 am-6:00 pm

2 stops11h 35m

$270

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Sat 4/18

7:53 pm-11:29 pm

1 stop26h 36m

San Juan Luis Munoz Marin Intl

Wed 4/22

10:59 am-11:26 am

1 stop25h 27m

$272

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Sun 3/8

9:01 pm-8:54 am

1 stop10h 53m

San Juan Luis Munoz Marin Intl

Wed 3/11

6:30 am-5:50 pm

1 stop12h 20m

$274

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Mon 5/4

3:30 pm-11:40 pm

1 stop7h 10m

San Juan Luis Munoz Marin Intl

Thu 5/7

6:50 am-10:30 pm

2 stops16h 40m

$277

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Mon 3/16

8:20 pm-2:03 am

1 stop28h 43m

San Juan Luis Munoz Marin Intl

Fri 3/20

5:30 am-5:02 pm

1 stop12h 32m

$278

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Tue 3/10

6:35 pm-2:03 am

1 stop6h 28m

San Juan Luis Munoz Marin Intl

Sat 3/14

9:41 pm-7:30 am

1 stop10h 49m

$279

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

3:19 pm-11:26 am

1 stop21h 07m

$280

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

Fri 5/1

1:00 am-10:04 am

1 stop10h 04m

$284

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Fri 4/17

7:34 pm-2:01 am

1 stop29h 27m

San Juan Luis Munoz Marin Intl

Sat 4/25

8:00 am-8:38 am

1 stop25h 38m

$288

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 $445 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

7h 10m

Direct flights

None
The fastest flight from Milwaukee to San Juan takes 7h 10m
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 7h 10m.

  • 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
3,043 reviews
Search Frontier flights
DeltaPriceFrom $115Free CancellationRating
7.9
8,239 reviews
Search Delta flights
Spirit AirlinesPriceFrom $195Free CancellationRating
6.3
8,493 reviews
Search Spirit Airlines flights
United AirlinesPriceFrom $202Free CancellationRating
7.4
9,344 reviews
Search United Airlines flights
American AirlinesPriceFrom $256Free CancellationRating
7.2
11,344 reviews
Search American Airlines flights
SouthwestPriceFrom $315Free CancellationRating
8.0
4,300 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