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Cheap flights from Milwaukee to San Juan from $107

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 9/18. 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

Delta Logo
12:20 pm - 11:49 pmMKE-SJU
9h 29m1 stop
Delta Logo
6:15 am - 11:18 amSJU-MKE
7h 03m1 stop
$215Delta
Find Deal
Tue, Feb 24 - Thu, Mar 5
American Airlines Logo
1:43 pm - 11:59 pmMKE-SJU
9h 16m1 stop
American Airlines Logo
4:45 pm - 11:16 pmSJU-MKE
7h 31m1 stop
$235American Airlines
Find Deal
Fri, Oct 24 - Thu, Oct 30
American Airlines Logo
7:12 am - 11:54 pmMKE-SJU
15h 42m1 stop
American Airlines Logo
3:00 pm - 9:24 pmSJU-MKE
7h 24m1 stop
$240American Airlines
Find Deal
Sun, Oct 19 - Wed, Oct 22
United Airlines Logo
8:33 am - 10:22 pmMKE-SJU
11h 49m2 stops
United Airlines Logo
4:52 pm - 10:56 pmSJU-MKE
8h 04m1 stop
$255United Airlines
Find Deal
Sun, Feb 1 - Fri, Feb 6
United Airlines Logo
11:30 am - 9:00 pmMKE-SJU
7h 30m1 stop
United Airlines Logo
2:05 am - 10:46 amSJU-MKE
10h 41m1 stop
$279United Airlines
Find Deal
Mon, Feb 2 - Fri, Feb 6
Delta Logo
2:45 pm - 11:49 pmMKE-SJU
7h 04m1 stop
Delta Logo
6:15 am - 11:18 amSJU-MKE
7h 03m1 stop
$297Delta
Find Deal
Tue, Feb 24 - Wed, Mar 4
Frontier Logo
7:40 pm - 9:55 amMKE-SJU
12h 15m1 stop
Frontier Logo
9:37 pm - 6:47 pmSJU-MKE
23h 10m1 stop
$298Frontier
Find Deal
Thu, Jan 8 - Wed, Jan 14
Southwest Logo
6:00 am - 8:45 pmMKE-SJU
13h 45m2 stops
Southwest Logo
5:00 am - 10:50 amSJU-MKE
6h 50m1 stop
$307Southwest
Find Deal
Mon, Sep 22 - Mon, Sep 29
Frontier Logo
7:48 pm - 9:55 amMKE-SJU
12h 07m1 stop
Frontier Logo
9:32 pm - 9:24 amSJU-MKE
13h 52m1 stop
$312Frontier
Find Deal
Fri, Dec 5 - Sat, Dec 13
Southwest Logo
6:05 am - 5:25 pmMKE-SJU
10h 20m1 stop
Southwest Logo
3:45 pm - 9:30 pmSJU-MKE
6h 45m1 stop
$335Southwest
Find Deal
Wed, Sep 24 - Tue, Sep 30

American Airlines flights from Milwaukee to San Juan

Our best American Airlines deals on Milwaukee to San Juan flight tickets
American Airlines
Oct 24
MKE1:43 pmMilwaukee-Mitchell
9h 16m
1 stop
SJU11:59 pmSan Juan Luis Munoz Marin Intl
Oct 30
SJU4:45 pmSan Juan Luis Munoz Marin Intl
7h 31m
1 stop
MKE11:16 pmMilwaukee-Mitchell
$235
Find similar
American Airlines
Oct 19
MKE7:12 amMilwaukee-Mitchell
15h 42m
1 stop
SJU11:54 pmSan Juan Luis Munoz Marin Intl
Oct 22
SJU3:00 pmSan Juan Luis Munoz Marin Intl
7h 24m
1 stop
MKE9:24 pmMilwaukee-Mitchell
$240
Find similar
American Airlines
Oct 18
MKE6:00 amMilwaukee-Mitchell
16h 05m
1 stop
SJU11:05 pmSan Juan Luis Munoz Marin Intl
Oct 25
SJU7:10 amSan Juan Luis Munoz Marin Intl
6h 50m
1 stop
MKE1:00 pmMilwaukee-Mitchell
$265
Find similar

United Airlines flights from Milwaukee to San Juan

Our best United Airlines deals on Milwaukee to San Juan flight tickets
United Airlines
Feb 1
MKE8:33 amMilwaukee-Mitchell
11h 49m
2 stops
SJU10:22 pmSan Juan Luis Munoz Marin Intl
Feb 6
SJU4:52 pmSan Juan Luis Munoz Marin Intl
8h 04m
1 stop
MKE10:56 pmMilwaukee-Mitchell
$255
Find similar
United Airlines
Feb 2
MKE11:30 amMilwaukee-Mitchell
7h 30m
1 stop
SJU9:00 pmSan Juan Luis Munoz Marin Intl
Feb 6
SJU2:05 amSan Juan Luis Munoz Marin Intl
10h 41m
1 stop
MKE10:46 amMilwaukee-Mitchell
$279
Find similar
United Airlines
Oct 28
MKE8:00 amMilwaukee-Mitchell
11h 26m
1 stop
SJU8:26 pmSan Juan Luis Munoz Marin Intl
Nov 11
SJU8:10 amSan Juan Luis Munoz Marin Intl
8h 57m
1 stop
MKE3:07 pmMilwaukee-Mitchell
$285
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 September 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 2/24

12:20 pm-11:49 pm

1 stop9h 29m

San Juan Luis Munoz Marin Intl

Thu 3/5

6:15 am-11:18 am

1 stop7h 03m

$215

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Fri 10/24

1:43 pm-11:59 pm

1 stop9h 16m

San Juan Luis Munoz Marin Intl

Thu 10/30

4:45 pm-11:16 pm

1 stop7h 31m

$235

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Sun 10/19

7:12 am-11:54 pm

1 stop15h 42m

San Juan Luis Munoz Marin Intl

Wed 10/22

3:00 pm-9:24 pm

1 stop7h 24m

$240

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Sun 2/1

8:33 am-10:22 pm

2 stops11h 49m

San Juan Luis Munoz Marin Intl

Fri 2/6

4:52 pm-10:56 pm

1 stop8h 04m

$255

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Mon 2/2

11:30 am-9:00 pm

1 stop7h 30m

San Juan Luis Munoz Marin Intl

Fri 2/6

2:05 am-10:46 am

1 stop10h 41m

$279

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Tue 2/24

2:45 pm-11:49 pm

1 stop7h 04m

San Juan Luis Munoz Marin Intl

Wed 3/4

6:15 am-11:18 am

1 stop7h 03m

$297

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Thu 1/8

7:40 pm-9:55 am

1 stop12h 15m

San Juan Luis Munoz Marin Intl

Wed 1/14

9:37 pm-6:47 pm

1 stop23h 10m

$298

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Mon 9/22

6:00 am-8:45 pm

2 stops13h 45m

San Juan Luis Munoz Marin Intl

Mon 9/29

5:00 am-10:50 am

1 stop6h 50m

$307

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Fri 12/5

7:48 pm-9:55 am

1 stop12h 07m

San Juan Luis Munoz Marin Intl

Sat 12/13

9:32 pm-9:24 am

1 stop13h 52m

$312

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Wed 9/24

6:05 am-5:25 pm

1 stop10h 20m

San Juan Luis Munoz Marin Intl

Tue 9/30

3:45 pm-9:30 pm

1 stop6h 45m

$335

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 $345.

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 $438 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 $374 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 40m.

  • 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
3,196 reviews
Search Frontier flights
United AirlinesPriceFrom $202Free CancellationRating
7.4
8,937 reviews
Search United Airlines flights
Spirit AirlinesPriceFrom $208Free CancellationRating
6.3
8,012 reviews
Search Spirit Airlines flights
DeltaPriceFrom $215Free CancellationRating
7.9
7,972 reviews
Search Delta flights
American AirlinesPriceFrom $273Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
SouthwestPriceFrom $315Free CancellationRating
8.0
4,238 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