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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.
Frontier Logo
12:08 pm - 2:50 amMKE-SJU
12h 42m1 stop
Frontier Logo
6:00 am - 6:26 pmSJU-MKE
14h 26m1 stop
$301Frontier
Find Deal
Mon, Dec 29 - Tue, Dec 30
Multiple Airlines Logo
7:48 pm - 9:47 amMKE-SJU
11h 59m1 stop
Multiple Airlines Logo
8:40 am - 6:45 pmSJU-MKE
36h 05m2 stops
$302Multiple Airlines
Find Deal
Sat, Jan 31 - Wed, Feb 11
Multiple Airlines Logo
6:09 pm - 12:16 amMKE-SJU
28h 07m1 stop
Multiple Airlines Logo
6:00 am - 9:39 amSJU-MKE
29h 39m2 stops
$304Multiple Airlines
Find Deal
Fri, Dec 5 - Sat, Dec 13
Delta Logo
7:00 am - 5:17 pmMKE-SJU
8h 17m1 stop
Delta Logo
7:30 am - 5:21 pmSJU-MKE
11h 51m1 stop
$305Delta
Find Deal
Sun, Feb 8 - Sat, Feb 14
Delta Logo
10:15 am - 8:58 pmMKE-SJU
8h 43m1 stop
Delta Logo
6:27 pm - 11:44 pmSJU-MKE
7h 17m1 stop
$306Delta
Find Deal
Wed, Jan 28 - Thu, Feb 5
American Airlines Logo
6:00 am - 3:48 pmMKE-SJU
7h 48m1 stop
American Airlines Logo
6:00 am - 3:57 pmSJU-MKE
11h 57m1 stop
$308American Airlines
Find Deal
Sat, Jan 31 - Mon, Feb 9
United Airlines Logo
2:32 pm - 6:11 amMKE-SJU
13h 39m2 stops
United Airlines Logo
8:35 am - 2:05 pmSJU-MKE
7h 30m1 stop
$309United Airlines
Find Deal
Sat, Jan 31 - Thu, Feb 12
Frontier Logo
11:12 am - 11:59 pmMKE-SJU
10h 47m1 stop
Frontier Logo
4:36 pm - 5:04 pmSJU-MKE
26h 28m1 stop
$310Frontier
Find Deal
Sat, Jan 31 - Mon, Feb 9
Multiple Airlines Logo
6:09 pm - 12:49 amMKE-SJU
28h 40m2 stops
Multiple Airlines Logo
3:55 am - 9:39 amSJU-MKE
7h 44m1 stop
$313Multiple Airlines
Find Deal
Fri, Dec 5 - Sat, Dec 13
Multiple Airlines Logo
6:09 pm - 12:49 amMKE-SJU
28h 40m2 stops
Multiple Airlines Logo
3:55 am - 9:39 amSJU-MKE
7h 44m1 stop
$314Multiple Airlines
Find Deal
Fri, Dec 5 - Sat, Dec 13

Frontier flights from Milwaukee to San Juan

Our best Frontier deals on Milwaukee to San Juan flight tickets
Frontier
Dec 29
MKE12:08 pmMilwaukee-Mitchell
12h 42m
1 stop
SJU2:50 amSan Juan Luis Munoz Marin Intl
Dec 30
SJU6:00 amSan Juan Luis Munoz Marin Intl
14h 26m
1 stop
MKE6:26 pmMilwaukee-Mitchell
$301
Find similar
Frontier
Jan 31
MKE11:12 amMilwaukee-Mitchell
10h 47m
1 stop
SJU11:59 pmSan Juan Luis Munoz Marin Intl
Feb 9
SJU4:36 pmSan Juan Luis Munoz Marin Intl
26h 28m
1 stop
MKE5:04 pmMilwaukee-Mitchell
$310
Find similar
Frontier
Feb 7
MKE7:48 pmMilwaukee-Mitchell
12h 06m
1 stop
SJU9:54 amSan Juan Luis Munoz Marin Intl
Feb 15
SJU11:05 amSan Juan Luis Munoz Marin Intl
9h 40m
1 stop
MKE6:45 pmMilwaukee-Mitchell
$343
Find similar

Delta flights from Milwaukee to San Juan

Our best Delta deals on Milwaukee to San Juan flight tickets
Delta
Feb 8
MKE7:00 amMilwaukee-Mitchell
8h 17m
1 stop
SJU5:17 pmSan Juan Luis Munoz Marin Intl
Feb 14
SJU7:30 amSan Juan Luis Munoz Marin Intl
11h 51m
1 stop
MKE5:21 pmMilwaukee-Mitchell
$305
Find similar
Delta
Jan 28
MKE10:15 amMilwaukee-Mitchell
8h 43m
1 stop
SJU8:58 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
Dec 9
MKE7:00 amMilwaukee-Mitchell
8h 20m
1 stop
SJU5:20 pmSan Juan Luis Munoz Marin Intl
Dec 16
SJU6:38 pmSan Juan Luis Munoz Marin Intl
7h 16m
1 stop
MKE11:54 pmMilwaukee-Mitchell
$317
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 November 24, 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

Mon 12/29

12:08 pm-2:50 am

1 stop12h 42m

San Juan Luis Munoz Marin Intl

Tue 12/30

6:00 am-6:26 pm

1 stop14h 26m

$301

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Sat 1/31

7:48 pm-9:47 am

1 stop11h 59m

San Juan Luis Munoz Marin Intl

Wed 2/11

8:40 am-6:45 pm

2 stops36h 05m

$302

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Fri 12/5

6:09 pm-12:16 am

1 stop28h 07m

San Juan Luis Munoz Marin Intl

Sat 12/13

6:00 am-9:39 am

2 stops29h 39m

$304

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Sun 2/8

7:00 am-5:17 pm

1 stop8h 17m

San Juan Luis Munoz Marin Intl

Sat 2/14

7:30 am-5:21 pm

1 stop11h 51m

$305

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Wed 1/28

10:15 am-8:58 pm

1 stop8h 43m

San Juan Luis Munoz Marin Intl

Thu 2/5

6:27 pm-11:44 pm

1 stop7h 17m

$306

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Sat 1/31

6:00 am-3:48 pm

1 stop7h 48m

San Juan Luis Munoz Marin Intl

Mon 2/9

6:00 am-3:57 pm

1 stop11h 57m

$308

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Sat 1/31

2:32 pm-6:11 am

2 stops13h 39m

San Juan Luis Munoz Marin Intl

Thu 2/12

8:35 am-2:05 pm

1 stop7h 30m

$309

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Sat 1/31

11:12 am-11:59 pm

1 stop10h 47m

San Juan Luis Munoz Marin Intl

Mon 2/9

4:36 pm-5:04 pm

1 stop26h 28m

$310

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Fri 12/5

6:09 pm-12:49 am

2 stops28h 40m

San Juan Luis Munoz Marin Intl

Sat 12/13

3:55 am-9:39 am

1 stop7h 44m

$313

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Fri 12/5

6:09 pm-12:49 am

2 stops28h 40m

San Juan Luis Munoz Marin Intl

Sat 12/13

3:55 am-9:39 am

1 stop7h 44m

$314

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.

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 $436 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 $324 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

Direct flights

None
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 55m.

  • 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
3,097 reviews
Search Frontier flights
United AirlinesPriceFrom $202Free CancellationRating
7.4
9,039 reviews
Search United Airlines flights
DeltaPriceFrom $215Free CancellationRating
7.9
7,993 reviews
Search Delta flights
Spirit AirlinesPriceFrom $226Free CancellationRating
6.3
8,159 reviews
Search Spirit Airlines flights
American AirlinesPriceFrom $275Free CancellationRating
7.2
11,043 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