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Cheap flights from Milwaukee to San Juan from $88

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 5/19. 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.

Find the cheapest flights from Milwaukee to San Juan

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
8:43 am - 7:57 am
MKE
-
SJU
22h 14m
1 stop
Frontier Logo
6:31 pm - 7:58 am
SJU
-
MKE
14h 27m
1 stop
$315Frontier
Thu, Jul 23 - Mon, Aug 3
Frontier Logo
9:56 am - 2:08 am
MKE
-
SJU
15h 12m
1 stop
Frontier Logo
3:03 am - 8:01 am
SJU
-
MKE
29h 58m
1 stop
$321Frontier
Tue, May 19 - Sun, May 24
American Airlines Logo
12:27 pm - 12:15 am
MKE
-
SJU
10h 48m
2 stops
American Airlines Logo
3:28 pm - 11:50 pm
SJU
-
MKE
9h 22m
2 stops
$325American Airlines
Sat, Aug 29 - Tue, Sep 1
American Airlines Logo
12:58 pm - 10:24 pm
MKE
-
SJU
8h 26m
1 stop
American Airlines Logo
6:51 am - 11:23 pm
SJU
-
MKE
17h 32m
1 stop
$326American Airlines
Sat, Aug 22 - Mon, Aug 31
American Airlines Logo
6:16 am - 6:24 pm
MKE
-
SJU
11h 08m
2 stops
American Airlines Logo
1:38 pm - 10:59 pm
SJU
-
MKE
10h 21m
2 stops
$330American Airlines
Wed, Aug 12 - Tue, Aug 18
American Airlines Logo
6:16 am - 6:24 pm
MKE
-
SJU
11h 08m
2 stops
American Airlines Logo
6:51 am - 11:23 pm
SJU
-
MKE
17h 32m
1 stop
$331American Airlines
Wed, Aug 12 - Tue, Aug 18
Frontier Logo
8:43 am - 2:09 am
MKE
-
SJU
16h 26m
1 stop
Frontier Logo
4:05 pm - 7:58 am
SJU
-
MKE
16h 53m
1 stop
$332Frontier
Thu, Jun 25 - Wed, Jul 15
American Airlines Logo
12:34 pm - 11:01 pm
MKE
-
SJU
9h 27m
1 stop
American Airlines Logo
7:00 am - 5:37 pm
SJU
-
MKE
11h 37m
1 stop
$340American Airlines
Wed, May 27 - Fri, Jun 5
Frontier Logo
8:43 am - 7:57 am
MKE
-
SJU
22h 14m
1 stop
Frontier Logo
6:31 pm - 7:58 am
SJU
-
MKE
14h 27m
1 stop
$341Frontier
Thu, Jul 30 - Mon, Aug 10
Frontier Logo
8:46 am - 8:04 am
MKE
-
SJU
22h 18m
1 stop
Frontier Logo
6:05 pm - 7:58 am
SJU
-
MKE
14h 53m
1 stop
$348Frontier
Thu, Jun 4 - Wed, Jun 10

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Frontier flights from Milwaukee to San Juan

Our best Frontier deals on Milwaukee to San Juan flight tickets
Frontier
Jul 23
MKE8:43 amMilwaukee-Mitchell
22h 14m
1 stop
SJU7:57 amSan Juan Luis Munoz Marin Intl
Aug 3
SJU6:31 pmSan Juan Luis Munoz Marin Intl
14h 27m
1 stop
MKE7:58 amMilwaukee-Mitchell
$315
Frontier
May 19
MKE9:56 amMilwaukee-Mitchell
15h 12m
1 stop
SJU2:08 amSan Juan Luis Munoz Marin Intl
May 24
SJU3:03 amSan Juan Luis Munoz Marin Intl
29h 58m
1 stop
MKE8:01 amMilwaukee-Mitchell
$321
Frontier
May 17
MKE9:56 amMilwaukee-Mitchell
21h 08m
1 stop
SJU8:04 amSan Juan Luis Munoz Marin Intl
May 23
SJU3:58 pmSan Juan Luis Munoz Marin Intl
17h 03m
1 stop
MKE8:01 amMilwaukee-Mitchell
$329

American Airlines flights from Milwaukee to San Juan

Our best American Airlines deals on Milwaukee to San Juan flight tickets
American Airlines
Aug 22
MKE12:58 pmMilwaukee-Mitchell
8h 26m
1 stop
SJU10:24 pmSan Juan Luis Munoz Marin Intl
Aug 31
SJU6:51 amSan Juan Luis Munoz Marin Intl
17h 32m
1 stop
MKE11:23 pmMilwaukee-Mitchell
$326
American Airlines
Aug 12
MKE6:16 amMilwaukee-Mitchell
11h 08m
2 stops
SJU6:24 pmSan Juan Luis Munoz Marin Intl
Aug 18
SJU6:51 amSan Juan Luis Munoz Marin Intl
17h 32m
1 stop
MKE11:23 pmMilwaukee-Mitchell
$331
American Airlines
May 27
MKE12:34 pmMilwaukee-Mitchell
9h 27m
1 stop
SJU11:01 pmSan Juan Luis Munoz Marin Intl
Jun 5
SJU7:00 amSan Juan Luis Munoz Marin Intl
11h 37m
1 stop
MKE5:37 pmMilwaukee-Mitchell
$340

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 April 28, 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

Cheapest round-trip

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Thu 7/23

8:43 am-7:57 am

1 stop22h 14m

San Juan Luis Munoz Marin Intl

Mon 8/3

6:31 pm-7:58 am

1 stop14h 27m

$315

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Tue 5/19

9:56 am-2:08 am

1 stop15h 12m

San Juan Luis Munoz Marin Intl

Sun 5/24

3:03 am-8:01 am

1 stop29h 58m

$321
Quickest round-trip

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Sat 8/29

12:27 pm-12:15 am

2 stops10h 48m

San Juan Luis Munoz Marin Intl

Tue 9/1

3:28 pm-11:50 pm

2 stops9h 22m

$325

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Sat 8/22

12:58 pm-10:24 pm

1 stop8h 26m

San Juan Luis Munoz Marin Intl

Mon 8/31

6:51 am-11:23 pm

1 stop17h 32m

$326

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Wed 8/12

6:16 am-6:24 pm

2 stops11h 08m

San Juan Luis Munoz Marin Intl

Tue 8/18

1:38 pm-10:59 pm

2 stops10h 21m

$330

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Wed 8/12

6:16 am-6:24 pm

2 stops11h 08m

San Juan Luis Munoz Marin Intl

Tue 8/18

6:51 am-11:23 pm

1 stop17h 32m

$331

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Thu 6/25

8:43 am-2:09 am

1 stop16h 26m

San Juan Luis Munoz Marin Intl

Wed 7/15

4:05 pm-7:58 am

1 stop16h 53m

$332

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Wed 5/27

12:34 pm-11:01 pm

1 stop9h 27m

San Juan Luis Munoz Marin Intl

Fri 6/5

7:00 am-5:37 pm

1 stop11h 37m

$340

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Thu 7/30

8:43 am-7:57 am

1 stop22h 14m

San Juan Luis Munoz Marin Intl

Mon 8/10

6:31 pm-7:58 am

1 stop14h 27m

$341

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Thu 6/4

8:46 am-8:04 am

1 stop22h 18m

San Juan Luis Munoz Marin Intl

Wed 6/10

6:05 pm-7:58 am

1 stop14h 53m

$348

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 April, then October is your next best option. Flight prices from Milwaukee to San Juan during October average around $108.

How far in advance should I book a flight from Milwaukee 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 $337 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 28m

Direct flights

None
The fastest flight from Milwaukee to San Juan takes 6h 28m
There are no direct flights from Milwaukee to San Juan. There are no popular flight routes from Milwaukee to San Juan.
Search flight deals

Frequently asked questions about flying from Milwaukee to San Juan

  • 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 28m.

  • 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
DeltaPriceFrom $112Free CancellationRating
7.9
8,467 reviews
Search Delta flights
FrontierPriceFrom $156Free CancellationRating
5.6
2,970 reviews
Search Frontier flights
United AirlinesPriceFrom $202Free CancellationRating
7.4
9,680 reviews
Search United Airlines flights
Spirit AirlinesPriceFrom $219Free CancellationRating
6.3
8,631 reviews
Search Spirit Airlines flights
American AirlinesPriceFrom $256Free CancellationRating
7.1
11,680 reviews
Search American Airlines flights
SouthwestPriceFrom $315Free CancellationRating
8.0
4,315 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