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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 3/24. 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
12:21 pm - 2:01 am
MKE
-
SJU
12h 40m
1 stop
Frontier Logo
7:15 am - 6:47 pm
SJU
-
MKE
12h 32m
1 stop
$279Frontier
Mon, May 4 - Mon, May 11
American Airlines Logo
5:00 pm - 4:32 am
MKE
-
SJU
10h 32m
1 stop
American Airlines Logo
7:25 am - 5:51 pm
SJU
-
MKE
11h 26m
1 stop
$286American Airlines
Sat, Apr 25 - Fri, May 1
Frontier Logo
12:03 pm - 2:01 am
MKE
-
SJU
12h 58m
1 stop
Frontier Logo
7:15 am - 6:47 pm
SJU
-
MKE
12h 32m
1 stop
$294Frontier
Sun, May 10 - Mon, May 11
Southwest Logo
2:35 pm - 11:55 pm
MKE
-
SJU
8h 20m
1 stop
Southwest Logo
3:45 pm - 10:20 pm
SJU
-
MKE
7h 35m
1 stop
$296Southwest
Sat, Jul 11 - Tue, Jul 14
Frontier Logo
7:02 pm - 8:00 pm
MKE
-
SJU
23h 58m
1 stop
Frontier Logo
6:30 am - 6:49 pm
SJU
-
MKE
13h 19m
1 stop
$297Frontier
Thu, Apr 9 - Fri, Apr 17
Frontier Logo
12:21 pm - 2:01 am
MKE
-
SJU
12h 40m
1 stop
Frontier Logo
3:08 am - 11:08 am
SJU
-
MKE
9h 00m
1 stop
$299Frontier
Mon, May 4 - Sat, May 16
American Airlines Logo
8:11 am - 8:51 pm
MKE
-
SJU
11h 40m
2 stops
American Airlines Logo
6:00 am - 9:41 pm
SJU
-
MKE
16h 41m
1 stop
$300American Airlines
Sat, May 2 - Mon, May 11
Frontier Logo
4:15 pm - 12:51 am
MKE
-
SJU
7h 36m
1 stop
Frontier Logo
3:19 pm - 11:26 am
SJU
-
MKE
21h 07m
1 stop
$301Frontier
Sat, Apr 11 - Wed, Apr 15
American Airlines Logo
12:00 pm - 8:51 pm
MKE
-
SJU
7h 51m
1 stop
American Airlines Logo
6:00 am - 9:41 pm
SJU
-
MKE
16h 41m
1 stop
$303American Airlines
Sat, May 2 - Fri, May 8
American Airlines Logo
5:06 am - 8:51 pm
MKE
-
SJU
14h 45m
2 stops
American Airlines Logo
6:00 am - 9:41 pm
SJU
-
MKE
16h 41m
1 stop
$305American Airlines
Wed, May 6 - Mon, May 11

Frontier flights from Milwaukee to San Juan

Our best Frontier deals on Milwaukee to San Juan flight tickets
Frontier
May 4
MKE12:21 pmMilwaukee-Mitchell
12h 40m
1 stop
SJU2:01 amSan Juan Luis Munoz Marin Intl
May 11
SJU7:15 amSan Juan Luis Munoz Marin Intl
12h 32m
1 stop
MKE6:47 pmMilwaukee-Mitchell
$279
Frontier
May 10
MKE12:03 pmMilwaukee-Mitchell
12h 58m
1 stop
SJU2:01 amSan Juan Luis Munoz Marin Intl
May 11
SJU7:15 amSan Juan Luis Munoz Marin Intl
12h 32m
1 stop
MKE6:47 pmMilwaukee-Mitchell
$294
Frontier
Apr 9
MKE7:02 pmMilwaukee-Mitchell
23h 58m
1 stop
SJU8:00 pmSan Juan Luis Munoz Marin Intl
Apr 17
SJU6:30 amSan Juan Luis Munoz Marin Intl
13h 19m
1 stop
MKE6:49 pmMilwaukee-Mitchell
$297

American Airlines flights from Milwaukee to San Juan

Our best American Airlines deals on Milwaukee to San Juan flight tickets
American Airlines
Apr 25
MKE5:00 pmMilwaukee-Mitchell
10h 32m
1 stop
SJU4:32 amSan Juan Luis Munoz Marin Intl
May 1
SJU7:25 amSan Juan Luis Munoz Marin Intl
11h 26m
1 stop
MKE5:51 pmMilwaukee-Mitchell
$286
American Airlines
May 2
MKE8:11 amMilwaukee-Mitchell
11h 40m
2 stops
SJU8:51 pmSan Juan Luis Munoz Marin Intl
May 11
SJU6:00 amSan Juan Luis Munoz Marin Intl
16h 41m
1 stop
MKE9:41 pmMilwaukee-Mitchell
$300
American Airlines
May 2
MKE5:06 amMilwaukee-Mitchell
14h 45m
2 stops
SJU8:51 pmSan Juan Luis Munoz Marin Intl
May 9
SJU6:02 pmSan Juan Luis Munoz Marin Intl
14h 39m
2 stops
MKE7:41 amMilwaukee-Mitchell
$303

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 March 10, 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

Mon 5/4

12:21 pm-2:01 am

1 stop12h 40m

San Juan Luis Munoz Marin Intl

Mon 5/11

7:15 am-6:47 pm

1 stop12h 32m

$279

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Sat 4/25

5:00 pm-4:32 am

1 stop10h 32m

San Juan Luis Munoz Marin Intl

Fri 5/1

7:25 am-5:51 pm

1 stop11h 26m

$286

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Sun 5/10

12:03 pm-2:01 am

1 stop12h 58m

San Juan Luis Munoz Marin Intl

Mon 5/11

7:15 am-6:47 pm

1 stop12h 32m

$294
Quickest round-trip

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Sat 7/11

2:35 pm-11:55 pm

1 stop8h 20m

San Juan Luis Munoz Marin Intl

Tue 7/14

3:45 pm-10:20 pm

1 stop7h 35m

$296

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Thu 4/9

7:02 pm-8:00 pm

1 stop23h 58m

San Juan Luis Munoz Marin Intl

Fri 4/17

6:30 am-6:49 pm

1 stop13h 19m

$297

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Mon 5/4

12:21 pm-2:01 am

1 stop12h 40m

San Juan Luis Munoz Marin Intl

Sat 5/16

3:08 am-11:08 am

1 stop9h 00m

$299

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Sat 5/2

8:11 am-8:51 pm

2 stops11h 40m

San Juan Luis Munoz Marin Intl

Mon 5/11

6:00 am-9:41 pm

1 stop16h 41m

$300

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

Wed 4/15

3:19 pm-11:26 am

1 stop21h 07m

$301

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Sat 5/2

12:00 pm-8:51 pm

1 stop7h 51m

San Juan Luis Munoz Marin Intl

Fri 5/8

6:00 am-9:41 pm

1 stop16h 41m

$303

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

Wed 5/6

5:06 am-8:51 pm

2 stops14h 45m

San Juan Luis Munoz Marin Intl

Mon 5/11

6:00 am-9:41 pm

1 stop16h 41m

$305

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 $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 $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 21m

Direct flights

None
The fastest flight from Milwaukee to San Juan takes 6h 21m
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 21m.

  • 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
8,276 reviews
Search Delta flights
FrontierPriceFrom $156Free CancellationRating
5.7
3,033 reviews
Search Frontier flights
United AirlinesPriceFrom $158Free CancellationRating
7.4
9,409 reviews
Search United Airlines flights
Spirit AirlinesPriceFrom $208Free CancellationRating
6.3
8,513 reviews
Search Spirit Airlines flights
American AirlinesPriceFrom $256Free CancellationRating
7.1
11,414 reviews
Search American Airlines flights
SouthwestPriceFrom $315Free CancellationRating
8.0
4,317 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