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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.
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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.
Delta Logo
5:30 am - 5:17 pmMKE-SJU
9h 47m1 stop
Delta Logo
6:27 pm - 11:46 pmSJU-MKE
7h 19m1 stop
$235Delta
Find Deal
Tue, Feb 3 - Tue, Feb 10
Frontier Logo
7:40 pm - 9:55 amMKE-SJU
12h 15m1 stop
Frontier Logo
11:05 am - 6:45 pmSJU-MKE
9h 40m1 stop
$251Frontier
Find Deal
Thu, Feb 19 - Mon, Feb 23
United Airlines Logo
10:30 am - 10:22 pmMKE-SJU
9h 52m2 stops
United Airlines Logo
2:05 am - 12:09 pmSJU-MKE
12h 04m2 stops
$253United Airlines
Find Deal
Tue, Feb 3 - Mon, Feb 9
Frontier Logo
7:40 pm - 9:55 amMKE-SJU
12h 15m1 stop
Frontier Logo
9:37 pm - 6:45 pmSJU-MKE
23h 08m1 stop
$265Frontier
Find Deal
Thu, Feb 19 - Sun, Feb 22
Frontier Logo
10:53 am - 1:21 amMKE-SJU
12h 28m1 stop
Frontier Logo
6:10 am - 6:45 pmSJU-MKE
14h 35m1 stop
$266Frontier
Find Deal
Fri, Jan 9 - Mon, Jan 12
United Airlines Logo
8:33 am - 10:22 pmMKE-SJU
11h 49m2 stops
United Airlines Logo
7:45 am - 2:55 pmSJU-MKE
9h 10m1 stop
$270United Airlines
Find Deal
Tue, Jan 13 - Wed, Jan 21
Southwest Logo
2:05 pm - 11:00 pmMKE-SJU
6h 55m1 stop
Southwest Logo
5:35 am - 3:35 pmSJU-MKE
12h 00m1 stop
$274Southwest
Find Deal
Sat, Jan 31 - Mon, Feb 9
Frontier Logo
7:01 pm - 11:59 pmMKE-SJU
26h 58m1 stop
Frontier Logo
5:39 pm - 6:06 pmSJU-MKE
26h 27m1 stop
$280Frontier
Find Deal
Mon, Jan 26 - Sun, Feb 1
Frontier Logo
7:42 pm - 9:25 amMKE-SJU
11h 43m1 stop
Frontier Logo
8:00 am - 6:01 pmSJU-MKE
12h 01m1 stop
$286Frontier
Find Deal
Sun, Jan 18 - Wed, Jan 21
Frontier Logo
7:40 pm - 9:55 amMKE-SJU
12h 15m1 stop
Frontier Logo
9:37 pm - 6:45 pmSJU-MKE
23h 08m1 stop
$300Frontier
Find Deal
Fri, Feb 20 - Sun, Feb 22

Frontier flights from Milwaukee to San Juan

Our best Frontier deals on Milwaukee to San Juan flight tickets
Frontier
Feb 19
MKE7:40 pmMilwaukee-Mitchell
12h 15m
1 stop
SJU9:55 amSan Juan Luis Munoz Marin Intl
Feb 23
SJU11:05 amSan Juan Luis Munoz Marin Intl
9h 40m
1 stop
MKE6:45 pmMilwaukee-Mitchell
$251
Find similar
Frontier
Feb 19
MKE7:40 pmMilwaukee-Mitchell
12h 15m
1 stop
SJU9:55 amSan Juan Luis Munoz Marin Intl
Feb 22
SJU9:37 pmSan Juan Luis Munoz Marin Intl
23h 08m
1 stop
MKE6:45 pmMilwaukee-Mitchell
$265
Find similar
Frontier
Jan 9
MKE10:53 amMilwaukee-Mitchell
12h 28m
1 stop
SJU1:21 amSan Juan Luis Munoz Marin Intl
Jan 12
SJU6:10 amSan Juan Luis Munoz Marin Intl
14h 35m
1 stop
MKE6:45 pmMilwaukee-Mitchell
$266
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
SJU6:27 pmSan Juan Luis Munoz Marin Intl
7h 21m
1 stop
MKE11:48 pmMilwaukee-Mitchell
$235
Find similar
Delta
Feb 2
MKE7:00 amMilwaukee-Mitchell
8h 17m
1 stop
SJU5:17 pmSan Juan Luis Munoz Marin Intl
Feb 11
SJU6:27 pmSan Juan Luis Munoz Marin Intl
7h 19m
1 stop
MKE11:46 pmMilwaukee-Mitchell
$313
Find similar
Delta
Dec 9
MKE5:45 amMilwaukee-Mitchell
6h 29m
1 stop
SJU2:14 pmSan Juan Luis Munoz Marin Intl
Dec 15
SJU6:38 pmSan Juan Luis Munoz Marin Intl
7h 16m
1 stop
MKE11:54 pmMilwaukee-Mitchell
$399
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 December 3, 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

Tue 2/3

5:30 am-5:17 pm

1 stop9h 47m

San Juan Luis Munoz Marin Intl

Tue 2/10

6:27 pm-11:46 pm

1 stop7h 19m

$235

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Thu 2/19

7:40 pm-9:55 am

1 stop12h 15m

San Juan Luis Munoz Marin Intl

Mon 2/23

11:05 am-6:45 pm

1 stop9h 40m

$251

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Tue 2/3

10:30 am-10:22 pm

2 stops9h 52m

San Juan Luis Munoz Marin Intl

Mon 2/9

2:05 am-12:09 pm

2 stops12h 04m

$253

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Thu 2/19

7:40 pm-9:55 am

1 stop12h 15m

San Juan Luis Munoz Marin Intl

Sun 2/22

9:37 pm-6:45 pm

1 stop23h 08m

$265

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Fri 1/9

10:53 am-1:21 am

1 stop12h 28m

San Juan Luis Munoz Marin Intl

Mon 1/12

6:10 am-6:45 pm

1 stop14h 35m

$266

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Tue 1/13

8:33 am-10:22 pm

2 stops11h 49m

San Juan Luis Munoz Marin Intl

Wed 1/21

7:45 am-2:55 pm

1 stop9h 10m

$270

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Sat 1/31

2:05 pm-11:00 pm

1 stop6h 55m

San Juan Luis Munoz Marin Intl

Mon 2/9

5:35 am-3:35 pm

1 stop12h 00m

$274

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Mon 1/26

7:01 pm-11:59 pm

1 stop26h 58m

San Juan Luis Munoz Marin Intl

Sun 2/1

5:39 pm-6:06 pm

1 stop26h 27m

$280

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

$286

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Fri 2/20

7:40 pm-9:55 am

1 stop12h 15m

San Juan Luis Munoz Marin Intl

Sun 2/22

9:37 pm-6:45 pm

1 stop23h 08m

$300

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 $437 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 $331 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 59m

Direct flights

None
The fastest flight from Milwaukee to San Juan takes 6h 59m
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 41m.

  • 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
3,093 reviews
Search Frontier flights
DeltaPriceFrom $208Free CancellationRating
7.9
8,009 reviews
Search Delta flights
United AirlinesPriceFrom $215Free CancellationRating
7.4
9,064 reviews
Search United Airlines flights
Spirit AirlinesPriceFrom $226Free CancellationRating
6.3
8,156 reviews
Search Spirit Airlines flights
American AirlinesPriceFrom $274Free CancellationRating
7.2
11,045 reviews
Search American Airlines flights
SouthwestPriceFrom $315Free CancellationRating
8.0
4,253 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