Latest deals
Insights
FAQs
Reviews
Price Alerts

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 3/2. 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

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Milwaukee to San Juan

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
7:42 pm - 2:42 pm
MKE
-
SJU
18h 00m
1 stop
Frontier Logo
3:19 pm - 11:08 am
SJU
-
MKE
20h 49m
1 stop
$251Frontier
Sat, Apr 18 - Wed, Apr 22
Frontier Logo
7:47 pm - 1:27 pm
MKE
-
SJU
15h 40m
1 stop
Frontier Logo
3:53 am - 3:44 pm
SJU
-
MKE
13h 51m
1 stop
$255Frontier
Sat, Feb 21 - Tue, Feb 24
United Airlines Logo
12:13 pm - 8:34 pm
MKE
-
SJU
7h 21m
1 stop
United Airlines Logo
1:00 am - 1:11 pm
SJU
-
MKE
13h 11m
2 stops
$256United Airlines
Sat, Apr 25 - Fri, May 1
Frontier Logo
6:35 pm - 1:58 am
MKE
-
SJU
6h 23m
1 stop
Frontier Logo
3:08 am - 7:30 am
SJU
-
MKE
29h 22m
1 stop
$259Frontier
Wed, Mar 11 - Tue, Mar 17
Frontier Logo
7:37 pm - 11:27 am
MKE
-
SJU
13h 50m
1 stop
Frontier Logo
11:15 am - 3:44 pm
SJU
-
MKE
30h 29m
1 stop
$264Frontier
Thu, Feb 26 - Mon, Mar 2
Frontier Logo
7:52 pm - 9:54 am
MKE
-
SJU
12h 02m
1 stop
Frontier Logo
4:25 pm - 9:43 am
SJU
-
MKE
19h 18m
1 stop
$268Frontier
Mon, Feb 16 - Thu, Feb 19
United Airlines Logo
9:43 am - 9:24 pm
MKE
-
SJU
10h 41m
2 stops
United Airlines Logo
1:00 am - 10:15 am
SJU
-
MKE
10h 15m
1 stop
$269United Airlines
Sat, Apr 11 - Fri, Apr 17
Frontier Logo
6:37 pm - 9:54 am
MKE
-
SJU
13h 17m
1 stop
Frontier Logo
3:53 am - 9:43 am
SJU
-
MKE
7h 50m
1 stop
$272Frontier
Sun, Feb 22 - Thu, Feb 26
Frontier Logo
7:47 pm - 2:53 am
MKE
-
SJU
29h 06m
1 stop
Frontier Logo
11:15 am - 3:44 pm
SJU
-
MKE
30h 29m
1 stop
$274Frontier
Sat, Feb 28 - Mon, Mar 2
Frontier Logo
6:37 pm - 9:54 am
MKE
-
SJU
13h 17m
1 stop
Frontier Logo
3:53 am - 9:43 am
SJU
-
MKE
7h 50m
1 stop
$282Frontier
Sun, Feb 22 - Thu, Feb 26

Southwest flights from Milwaukee to San Juan

Our best Southwest deals on Milwaukee to San Juan flight tickets
Southwest
Mar 1
MKE5:20 pmMilwaukee-Mitchell
6h 15m
1 stop
SJU1:35 amSan Juan Luis Munoz Marin Intl
Mar 7
SJU9:50 pmSan Juan Luis Munoz Marin Intl
11h 50m
1 stop
MKE7:40 amMilwaukee-Mitchell
$308
Southwest
Mar 11
MKE3:40 pmMilwaukee-Mitchell
7h 35m
2 stops
SJU12:15 amSan Juan Luis Munoz Marin Intl
Mar 18
SJU5:15 amSan Juan Luis Munoz Marin Intl
7h 20m
1 stop
MKE11:35 amMilwaukee-Mitchell
$332
Southwest
May 9
MKE5:00 amMilwaukee-Mitchell
8h 40m
2 stops
SJU2:40 pmSan Juan Luis Munoz Marin Intl
May 17
SJU9:45 pmSan Juan Luis Munoz Marin Intl
12h 55m
1 stop
MKE9:40 amMilwaukee-Mitchell
$361

Frontier flights from Milwaukee to San Juan

Our best Frontier deals on Milwaukee to San Juan flight tickets
Frontier
Apr 18
MKE7:42 pmMilwaukee-Mitchell
18h 00m
1 stop
SJU2:42 pmSan Juan Luis Munoz Marin Intl
Apr 22
SJU3:19 pmSan Juan Luis Munoz Marin Intl
20h 49m
1 stop
MKE11:08 amMilwaukee-Mitchell
$251
Frontier
Feb 21
MKE7:47 pmMilwaukee-Mitchell
15h 40m
1 stop
SJU1:27 pmSan Juan Luis Munoz Marin Intl
Feb 24
SJU3:53 amSan Juan Luis Munoz Marin Intl
13h 51m
1 stop
MKE3:44 pmMilwaukee-Mitchell
$255
Frontier
Mar 11
MKE6:35 pmMilwaukee-Mitchell
6h 23m
1 stop
SJU1:58 amSan Juan Luis Munoz Marin Intl
Mar 17
SJU3:08 amSan Juan Luis Munoz Marin Intl
29h 22m
1 stop
MKE7:30 amMilwaukee-Mitchell
$259

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 8, 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

Sat 4/18

7:42 pm-2:42 pm

1 stop18h 00m

San Juan Luis Munoz Marin Intl

Wed 4/22

3:19 pm-11:08 am

1 stop20h 49m

$251

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Sat 2/21

7:47 pm-1:27 pm

1 stop15h 40m

San Juan Luis Munoz Marin Intl

Tue 2/24

3:53 am-3:44 pm

1 stop13h 51m

$255

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Sat 4/25

12:13 pm-8:34 pm

1 stop7h 21m

San Juan Luis Munoz Marin Intl

Fri 5/1

1:00 am-1:11 pm

2 stops13h 11m

$256

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Wed 3/11

6:35 pm-1:58 am

1 stop6h 23m

San Juan Luis Munoz Marin Intl

Tue 3/17

3:08 am-7:30 am

1 stop29h 22m

$259

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Thu 2/26

7:37 pm-11:27 am

1 stop13h 50m

San Juan Luis Munoz Marin Intl

Mon 3/2

11:15 am-3:44 pm

1 stop30h 29m

$264

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Mon 2/16

7:52 pm-9:54 am

1 stop12h 02m

San Juan Luis Munoz Marin Intl

Thu 2/19

4:25 pm-9:43 am

1 stop19h 18m

$268

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Sat 4/11

9:43 am-9:24 pm

2 stops10h 41m

San Juan Luis Munoz Marin Intl

Fri 4/17

1:00 am-10:15 am

1 stop10h 15m

$269

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Sun 2/22

6:37 pm-9:54 am

1 stop13h 17m

San Juan Luis Munoz Marin Intl

Thu 2/26

3:53 am-9:43 am

1 stop7h 50m

$272

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Sat 2/28

7:47 pm-2:53 am

1 stop29h 06m

San Juan Luis Munoz Marin Intl

Mon 3/2

11:15 am-3:44 pm

1 stop30h 29m

$274

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Sun 2/22

6:37 pm-9:54 am

1 stop13h 17m

San Juan Luis Munoz Marin Intl

Thu 2/26

3:53 am-9:43 am

1 stop7h 50m

$282

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 $350.

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 $378 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 35m

Direct flights

None
The fastest flight from Milwaukee to San Juan takes 6h 35m
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 35m.

  • 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
8,172 reviews
Search Delta flights
United AirlinesPriceFrom $182Free CancellationRating
7.4
9,254 reviews
Search United Airlines flights
Spirit AirlinesPriceFrom $208Free CancellationRating
6.3
8,430 reviews
Search Spirit Airlines flights
American AirlinesPriceFrom $266Free CancellationRating
7.2
11,249 reviews
Search American Airlines flights
SouthwestPriceFrom $315Free CancellationRating
8.0
4,280 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

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Tue 3/10
Tue 3/17
By creating a price alert you accept our terms of use and privacy policy.

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