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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 4/27. 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
1 adult, Economy, 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
7:34 pm - 9:54 am
MKE
-
SJU
13h 20m
1 stop
Frontier Logo
3:19 pm - 8:38 am
SJU
-
MKE
18h 19m
1 stop
$292Frontier
Fri, Apr 17 - Sat, Apr 25
Multiple Airlines Logo
4:35 pm - 2:39 am
MKE
-
SJU
9h 04m
1 stop
Multiple Airlines Logo
3:13 am - 9:01 am
SJU
-
MKE
6h 48m
1 stop
$294Multiple Airlines
Thu, Apr 30 - Wed, May 6
Frontier Logo
8:46 am - 8:04 am
MKE
-
SJU
22h 18m
1 stop
Frontier Logo
3:33 pm - 8:01 am
SJU
-
MKE
17h 28m
1 stop
$300Frontier
Sun, May 10 - Sat, May 16
Frontier Logo
7:02 pm - 11:18 am
MKE
-
SJU
15h 16m
1 stop
Frontier Logo
6:30 am - 11:26 am
SJU
-
MKE
29h 56m
1 stop
$303Frontier
Sun, Apr 12 - Sun, Apr 19
Frontier Logo
4:15 pm - 12:51 am
MKE
-
SJU
7h 36m
1 stop
Frontier Logo
6:30 am - 11:26 am
SJU
-
MKE
29h 56m
1 stop
$311Frontier
Sat, Apr 11 - Sun, Apr 19
Frontier Logo
1:37 pm - 7:56 am
MKE
-
SJU
17h 19m
1 stop
Frontier Logo
6:30 am - 11:26 am
SJU
-
MKE
29h 56m
1 stop
$313Frontier
Sat, Apr 11 - Wed, Apr 15
Frontier Logo
8:46 am - 2:08 am
MKE
-
SJU
16h 22m
1 stop
Frontier Logo
6:09 pm - 7:58 am
SJU
-
MKE
14h 49m
1 stop
$315Frontier
Thu, Jun 4 - Mon, Jun 8
Frontier Logo
8:46 am - 2:08 am
MKE
-
SJU
16h 22m
1 stop
Frontier Logo
6:00 am - 7:58 am
SJU
-
MKE
26h 58m
1 stop
$321Frontier
Thu, Jun 4 - Wed, Jun 10
Delta Logo
12:33 pm - 8:24 pm
MKE
-
SJU
6h 51m
1 stop
Delta Logo
2:45 pm - 8:35 pm
SJU
-
MKE
6h 50m
1 stop
$326Delta
Sat, Apr 25 - Fri, May 1
Frontier Logo
9:33 am - 2:01 am
MKE
-
SJU
15h 28m
1 stop
Frontier Logo
6:30 am - 11:26 am
SJU
-
MKE
29h 56m
1 stop
$328Frontier
Sun, Apr 19 - Sun, Apr 26

Frontier flights from Milwaukee to San Juan

Our best Frontier deals on Milwaukee to San Juan flight tickets
Frontier
Apr 17
MKE7:34 pmMilwaukee-Mitchell
13h 20m
1 stop
SJU9:54 amSan Juan Luis Munoz Marin Intl
Apr 25
SJU3:19 pmSan Juan Luis Munoz Marin Intl
18h 19m
1 stop
MKE8:38 amMilwaukee-Mitchell
$292
Frontier
May 10
MKE8:46 amMilwaukee-Mitchell
22h 18m
1 stop
SJU8:04 amSan Juan Luis Munoz Marin Intl
May 16
SJU3:33 pmSan Juan Luis Munoz Marin Intl
17h 28m
1 stop
MKE8:01 amMilwaukee-Mitchell
$300
Frontier
Apr 12
MKE7:02 pmMilwaukee-Mitchell
15h 16m
1 stop
SJU11:18 amSan Juan Luis Munoz Marin Intl
Apr 19
SJU6:30 amSan Juan Luis Munoz Marin Intl
29h 56m
1 stop
MKE11:26 amMilwaukee-Mitchell
$303

American Airlines flights from Milwaukee to San Juan

Our best American Airlines deals on Milwaukee to San Juan flight tickets
American Airlines
Apr 22
MKE7:01 amMilwaukee-Mitchell
12h 50m
2 stops
SJU8:51 pmSan Juan Luis Munoz Marin Intl
May 2
SJU6:45 amSan Juan Luis Munoz Marin Intl
16h 42m
1 stop
MKE10:27 pmMilwaukee-Mitchell
$331
American Airlines
Sep 5
MKE2:36 pmMilwaukee-Mitchell
7h 20m
1 stop
SJU10:56 pmSan Juan Luis Munoz Marin Intl
Sep 12
SJU3:55 pmSan Juan Luis Munoz Marin Intl
18h 03m
2 stops
MKE8:58 amMilwaukee-Mitchell
$351
American Airlines
Sep 2
MKE6:05 amMilwaukee-Mitchell
16h 36m
1 stop
SJU11:41 pmSan Juan Luis Munoz Marin Intl
Sep 7
SJU8:00 amSan Juan Luis Munoz Marin Intl
17h 11m
1 stop
MKE12:11 amMilwaukee-Mitchell
$356

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 1, 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

Fri 4/17

7:34 pm-9:54 am

1 stop13h 20m

San Juan Luis Munoz Marin Intl

Sat 4/25

3:19 pm-8:38 am

1 stop18h 19m

$292

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Thu 4/30

4:35 pm-2:39 am

1 stop9h 04m

San Juan Luis Munoz Marin Intl

Wed 5/6

3:13 am-9:01 am

1 stop6h 48m

$294

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Sun 5/10

8:46 am-8:04 am

1 stop22h 18m

San Juan Luis Munoz Marin Intl

Sat 5/16

3:33 pm-8:01 am

1 stop17h 28m

$300

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Sun 4/12

7:02 pm-11:18 am

1 stop15h 16m

San Juan Luis Munoz Marin Intl

Sun 4/19

6:30 am-11:26 am

1 stop29h 56m

$303

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Sat 4/11

4:15 pm-12:51 am

1 stop7h 36m

San Juan Luis Munoz Marin Intl

Sun 4/19

6:30 am-11:26 am

1 stop29h 56m

$311

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

6:30 am-11:26 am

1 stop29h 56m

$313

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Thu 6/4

8:46 am-2:08 am

1 stop16h 22m

San Juan Luis Munoz Marin Intl

Mon 6/8

6:09 pm-7:58 am

1 stop14h 49m

$315

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Thu 6/4

8:46 am-2:08 am

1 stop16h 22m

San Juan Luis Munoz Marin Intl

Wed 6/10

6:00 am-7:58 am

1 stop26h 58m

$321
Quickest round-trip

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Sat 4/25

12:33 pm-8:24 pm

1 stop6h 51m

San Juan Luis Munoz Marin Intl

Fri 5/1

2:45 pm-8:35 pm

1 stop6h 50m

$326

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Sun 4/19

9:33 am-2:01 am

1 stop15h 28m

San Juan Luis Munoz Marin Intl

Sun 4/26

6:30 am-11:26 am

1 stop29h 56m

$328

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 $444 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 $334 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 14m

Direct flights

None
The fastest flight from Milwaukee to San Juan takes 6h 14m
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 14m.

  • 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
8,367 reviews
Search Delta flights
FrontierPriceFrom $156Free CancellationRating
5.7
3,006 reviews
Search Frontier flights
United AirlinesPriceFrom $202Free CancellationRating
7.4
9,530 reviews
Search United Airlines flights
Spirit AirlinesPriceFrom $219Free CancellationRating
6.3
8,573 reviews
Search Spirit Airlines flights
American AirlinesPriceFrom $256Free CancellationRating
7.1
11,545 reviews
Search American Airlines flights
SouthwestPriceFrom $315Free CancellationRating
8.0
4,336 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