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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
lun., mai 4 - lun., mai 11
United Airlines Logo
12:13 pm - 8:34 pm
MKE
-
SJU
7h 21m
1 stop
United Airlines Logo
7:20 am - 6:57 pm
SJU
-
MKE
12h 37m
2 stops
$283United Airlines
mar., avr. 28 - jeu., mai 7
American Airlines Logo
6:32 pm - 10:48 am
MKE
-
SJU
15h 16m
1 stop
American Airlines Logo
7:25 am - 6:00 pm
SJU
-
MKE
11h 35m
2 stops
$286American Airlines
sam., avr. 18 - mer., avr. 22
United Airlines Logo
10:45 am - 8:34 pm
MKE
-
SJU
8h 49m
1 stop
United Airlines Logo
1:00 am - 10:10 am
SJU
-
MKE
10h 10m
1 stop
$288United Airlines
sam., avr. 11 - jeu., avr. 16
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
dim., mai 10 - lun., mai 11
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
jeu., avr. 9 - ven., avr. 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
lun., mai 4 - sam., mai 16
Delta Logo
2:50 pm - 11:12 pm
MKE
-
SJU
7h 22m
1 stop
Delta Logo
12:55 pm - 11:57 pm
SJU
-
MKE
12h 02m
1 stop
$300Delta
mer., avr. 22 - mer., mai 6
Frontier Logo
1:37 pm - 7:56 am
MKE
-
SJU
17h 19m
1 stop
Frontier Logo
3:19 pm - 11:26 am
SJU
-
MKE
21h 07m
1 stop
$301Frontier
sam., avr. 11 - mer., avr. 15
United Airlines Logo
10:20 am - 11:50 pm
MKE
-
SJU
12h 30m
2 stops
United Airlines Logo
7:40 am - 2:27 pm
SJU
-
MKE
7h 47m
1 stop
$305United Airlines
sam., mai 2 - sam., mai 9

Frontier flights from Milwaukee to San Juan

Our best Frontier deals on Milwaukee to San Juan flight tickets
Frontier
Apr 9
MKE7:02 pmMilwaukee-Mitchell
27h 38m
1 stop
SJU11:40 pmSan Juan Luis Munoz Marin Intl
Apr 15
SJU3:19 pmSan Juan Luis Munoz Marin Intl
21h 07m
1 stop
MKE11:26 amMilwaukee-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 18
MKE6:32 pmMilwaukee-Mitchell
15h 16m
1 stop
SJU10:48 amSan Juan Luis Munoz Marin Intl
Apr 22
SJU7:25 amSan Juan Luis Munoz Marin Intl
11h 35m
2 stops
MKE6:00 pmMilwaukee-Mitchell
$286
American Airlines
Apr 11
MKE6:32 pmMilwaukee-Mitchell
15h 16m
1 stop
SJU10:48 amSan Juan Luis Munoz Marin Intl
Apr 15
SJU1:31 pmSan Juan Luis Munoz Marin Intl
11h 09m
2 stops
MKE11:40 pmMilwaukee-Mitchell
$309
American Airlines
May 5
MKE9:08 amMilwaukee-Mitchell
10h 43m
2 stops
SJU8:51 pmSan Juan Luis Munoz Marin Intl
May 13
SJU1:25 pmSan Juan Luis Munoz Marin Intl
9h 16m
1 stop
MKE9:41 pmMilwaukee-Mitchell
$310

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 mars 12, 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

lun. 5/4

12:21 pm-2:01 am

1 stop12h 40m

San Juan Luis Munoz Marin Intl

lun. 5/11

7:15 am-6:47 pm

1 stop12h 32m

$279

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

mar. 4/28

12:13 pm-8:34 pm

1 stop7h 21m

San Juan Luis Munoz Marin Intl

jeu. 5/7

7:20 am-6:57 pm

2 stops12h 37m

$283

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

sam. 4/18

6:32 pm-10:48 am

1 stop15h 16m

San Juan Luis Munoz Marin Intl

mer. 4/22

7:25 am-6:00 pm

2 stops11h 35m

$286
Quickest round-trip

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

sam. 4/11

10:45 am-8:34 pm

1 stop8h 49m

San Juan Luis Munoz Marin Intl

jeu. 4/16

1:00 am-10:10 am

1 stop10h 10m

$288

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

dim. 5/10

12:03 pm-2:01 am

1 stop12h 58m

San Juan Luis Munoz Marin Intl

lun. 5/11

7:15 am-6:47 pm

1 stop12h 32m

$294

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

jeu. 4/9

7:02 pm-8:00 pm

1 stop23h 58m

San Juan Luis Munoz Marin Intl

ven. 4/17

6:30 am-6:49 pm

1 stop13h 19m

$297

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

lun. 5/4

12:21 pm-2:01 am

1 stop12h 40m

San Juan Luis Munoz Marin Intl

sam. 5/16

3:08 am-11:08 am

1 stop9h 00m

$299

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

mer. 4/22

2:50 pm-11:12 pm

1 stop7h 22m

San Juan Luis Munoz Marin Intl

mer. 5/6

12:55 pm-11:57 pm

1 stop12h 02m

$300

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

sam. 4/11

1:37 pm-7:56 am

1 stop17h 19m

San Juan Luis Munoz Marin Intl

mer. 4/15

3:19 pm-11:26 am

1 stop21h 07m

$301

MilwaukeeSan Juan

MKE - SJU

MKESJU

Milwaukee-Mitchell

sam. 5/2

10:20 am-11:50 pm

2 stops12h 30m

San Juan Luis Munoz Marin Intl

sam. 5/9

7:40 am-2:27 pm

1 stop7h 47m

$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 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
8,286 reviews
Search Delta flights
FrontierPriceFrom $156Free CancellationRating
5.7
3,035 reviews
Search Frontier flights
United AirlinesPriceFrom $158Free CancellationRating
7.4
9,418 reviews
Search United Airlines flights
Spirit AirlinesPriceFrom $208Free CancellationRating
6.3
8,518 reviews
Search Spirit Airlines flights
American AirlinesPriceFrom $256Free CancellationRating
7.1
11,432 reviews
Search American Airlines flights
SouthwestPriceFrom $315Free CancellationRating
8.0
4,319 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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sam. 4/11
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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