HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Luis Munoz Marin Intl

$124+ Cheap flights from Portland, ME (PWM) to Luis Munoz Marin Intl (SJU)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/7. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — SJU
Dec 13 — Dec 201
Sat 12/13
Sat 12/20
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Portland to Luis Munoz Marin Intl with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Portland to San Juan Luis Munoz Marin Intl are usually found in November or October, booked 32 days in advance, depart on a Wednesday or Tuesday and return on a Wednesday

Find flight deals from Portland to Luis Munoz Marin Intl

Cheapest flights from Portland to Luis Munoz Marin Intl
Explore the most affordable flight options available from Portland to Luis Munoz Marin Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 13, 2025.

This Southwest deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/1012:45 pmPWM - SJU
2 stops10h 50mSouthwest
Fri 12/126:10 amSJU - PWM
1 stop11h 40mSouthwest
Deal found 11/11$267
This American Airlines deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/105:46 amPWM - SJU
2 stops17h 06mAmerican Airlines
Fri 12/122:36 pmSJU - PWM
2 stops10h 01mAmerican Airlines
Deal found 11/11$298
This Southwest deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1112:45 pmPWM - SJU
2 stops10h 50mSouthwest
Thu 12/186:10 amSJU - PWM
1 stop11h 40mSouthwest
Deal found 11/11$369
This American Airlines deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/117:11 amPWM - SJU
1 stop13h 54mAmerican Airlines
Thu 12/182:44 pmSJU - PWM
1 stop9h 07mAmerican Airlines
Deal found 11/11$378
This American Airlines deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/45:46 amPWM - SJU
2 stops15h 19mAmerican Airlines
Mon 12/86:25 amSJU - PWM
1 stop12h 50mAmerican Airlines
Deal found 11/11$434
This United Airlines deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/106:00 amPWM - SJU
2 stops14h 00mUnited Airlines
Thu 12/112:05 amSJU - PWM
1 stop8h 05mUnited Airlines
Deal found 11/11$443
This United Airlines deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/46:00 amPWM - SJU
2 stops14h 00mUnited Airlines
Sun 12/72:05 amSJU - PWM
1 stop8h 05mUnited Airlines
Deal found 11/11$460

Cheap flight deals from Portland to Luis Munoz Marin Intl

Discover tips and strategies to find the most affordable flight options for your journey from Portland (PWM) to Luis Munoz Marin Intl (SJU). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated November 13, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$235
(American Airlines)

One-way from

$124
(American Airlines)

Popular in

February

Cheapest in

November

Average price

$322
Provider with most accurate pricing for Portland-San Juan Luis Munoz Marin Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Portland-San Juan Luis Munoz Marin Intl flights.
Search Deals
From Portland to San Juan Luis Munoz Marin Intl
Search Deals
One-way flight from Portland to San Juan Luis Munoz Marin Intl
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($27 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($11 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Portland to Luis Munoz Marin Intl 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, Cheapflights users made 2,558,603 searches. Data last updated November 13, 2025.
Use the filters below to find and compare flights from Portland to San Juan Luis Munoz Marin Intl Airport that are best for you.

Fly from

Portland

Fly to

Luis Munoz Marin Intl

Route

Depart

Return

Price

PortlandSan Juan

PWM - SJU

PWMSJU

Portland

Sun 1/11

6:00 am-4:21 pm

1 stop9h 21m

San Juan Luis Munoz Marin Intl

Sat 1/17

6:30 am-12:10 pm

1 stop6h 40m

$235

PortlandSan Juan

PWM - SJU

PWMSJU

Portland

Mon 5/4

2:35 pm-11:43 pm

1 stop9h 08m

San Juan Luis Munoz Marin Intl

Thu 5/7

7:00 am-1:54 pm

1 stop6h 54m

$275

PortlandSan Juan

PWM - SJU

PWMSJU

Portland

Mon 5/4

2:18 pm-10:50 pm

1 stop8h 32m

San Juan Luis Munoz Marin Intl

Wed 5/6

3:30 am-1:23 pm

1 stop9h 53m

$308

PortlandSan Juan

PWM - SJU

PWMSJU

Portland

Tue 2/3

3:12 pm-12:36 am

1 stop8h 24m

San Juan Luis Munoz Marin Intl

Fri 2/6

2:05 am-2:39 pm

2 stops13h 34m

$325

PortlandSan Juan

PWM - SJU

PWMSJU

Portland

Sat 1/24

12:35 pm-11:00 pm

1 stop9h 25m

San Juan Luis Munoz Marin Intl

Sun 2/1

6:10 am-12:25 pm

1 stop7h 15m

$361

PortlandSan Juan

PWM - SJU

PWMSJU

Portland

Wed 2/18

6:00 am-2:40 pm

1 stop7h 40m

San Juan Luis Munoz Marin Intl

Wed 2/25

8:35 am-11:20 pm

2 stops15h 45m

$361

PortlandSan Juan

PWM - SJU

PWMSJU

Portland

Sat 1/24

2:31 pm-6:11 am

2 stops14h 40m

San Juan Luis Munoz Marin Intl

Fri 2/6

2:05 am-2:39 pm

2 stops13h 34m

$365

PortlandSan Juan

PWM - SJU

PWMSJU

Portland

Wed 2/18

3:30 pm-11:10 pm

1 stop6h 40m

San Juan Luis Munoz Marin Intl

Wed 2/25

6:10 am-2:55 pm

1 stop9h 45m

$374

PortlandSan Juan

PWM - SJU

PWMSJU

Portland

Thu 12/11

12:45 pm-12:35 am

2 stops10h 50m

San Juan Luis Munoz Marin Intl

Thu 12/18

6:40 am-4:50 pm

2 stops11h 10m

$394

PortlandSan Juan

PWM - SJU

PWMSJU

Portland

Sat 1/24

3:05 pm-6:11 am

2 stops14h 06m

San Juan Luis Munoz Marin Intl

Sat 1/31

2:05 am-2:39 pm

2 stops13h 34m

$397

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/12

Showing 1-10 of 16 results
1
2

Compare providers for flights from Portland to Luis Munoz Marin Intl

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Portland to Luis Munoz Marin Intl in November.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Portland, Maine-San Juan Luis Munoz Marin Intl Airport flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Portland, Maine-San Juan Luis Munoz Marin Intl Airport flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Portland, Maine-San Juan Luis Munoz Marin Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Portland, Maine-San Juan Luis Munoz Marin Intl Airport flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Portland, Maine-San Juan Luis Munoz Marin Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Portland to Luis Munoz Marin Intl

Have a flexible travel schedule? Discover the best time to fly to Luis Munoz Marin Intl from Portland with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Portland to San Juan Luis Munoz Marin Intl Airport

How far ahead should I book a flight from Portland, Maine to San Juan Luis Munoz Marin Intl Airport?

Use this chart to determine the optimal time to book a round-trip flight from Portland to Luis Munoz Marin Intl. Price data was last updated on November 7, 2025.

The best time to book flights from Portland, Maine to San Juan Luis Munoz Marin Intl Airport is 32 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Portland, Maine to San Juan Luis Munoz Marin Intl Airport?

Currently, January is the cheapest month in which you can book a flight from Portland, Maine to San Juan Luis Munoz Marin Intl Airport (average of $88). Flying from Portland, Maine to San Juan Luis Munoz Marin Intl Airport in September is currently the most expensive (average of $147). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from PWM to SJU?

Find hourly flight availability from Portland to Luis Munoz Marin Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 13, 2025.

When flying from Portland, Maine to San Juan Luis Munoz Marin Intl Airport, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 45% versus a flight in the morning.

How much does it cost to fly round-trip from Portland, Maine to San Juan Luis Munoz Marin Intl Airport?

Reviews of airlines servicing Luis Munoz Marin Intl

Get insights into the airlines that provide service to Luis Munoz Marin Intl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Luis Munoz Marin Intl. Reviews last updated November 13, 2025.
See what other customers who have flown with Southwest, Delta, and United Airlines from Portland to San Juan Luis Munoz Marin Intl Airport have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,242 reviews

Boarding

8.1

Comfort

8.0

Food

7.0

Overall

8.0

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Southwest
8.0
Very good
4,242 reviews
Southwest
8.0
Very good
4,242 reviews

Boarding

8.1

Comfort

8.0

Food

7.0

Overall

8.0

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
Delta
7.9
Good
8,007 reviews
Southwest
8.0
Very good
4,242 reviews

Boarding

8.1

Comfort

8.0

Food

7.0

Overall

8.0

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
United Airlines
7.4
Good
9,017 reviews
Southwest
8.0
Very good
4,242 reviews

Boarding

8.1

Comfort

8.0

Food

7.0

Overall

8.0

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
American Airlines
7.2
Good
11,051 reviews
Southwest
8.0
Very good
4,242 reviews

Boarding

8.1

Comfort

8.0

Food

7.0

Overall

8.0

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines
JetBlue
7.2
Good
2,907 reviews
Southwest
8.0
Very good
4,242 reviews

Boarding

8.1

Comfort

8.0

Food

7.0

Overall

8.0

Crew

8.6

Entertainment

7.5

Reviews

1 / 20
2.0
Mediocre

Mike,Aug 2025

OKC - AUS

AC was not adequate, even on a night flight. WiFi subpar even for the airlines

Related info for your journey

Find useful and relevant information for your journey from Portland to Luis Munoz Marin Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Portland to San Juan Luis Munoz Marin Intl?

    Most people fly from Portland (PWM) if they book a flight from Portland to San Juan Luis Munoz Marin Intl. On average, Portland has 0 outbound flights to San Juan Luis Munoz Marin Intl per day from 6 airlines. Portland is conveniently located just 2.9 mi from Portland’s city center.

  • How long is the flight from Portland, Maine to San Juan Luis Munoz Marin Intl Airport?

    Departing from Portland, Maine to San Juan Luis Munoz Marin Intl Airport will take you 8h 32m. There are 1758 mi between Portland, Maine and San Juan Luis Munoz Marin Intl Airport. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from Portland, Maine to San Juan Luis Munoz Marin Intl Airport round-trip?

    Cheapflights users have booked flights from Portland, Maine to San Juan Luis Munoz Marin Intl Airport round-trip from $145. Other airlines that can offer you cheap pricing are United Airlines, from $249, and Delta, from $274. Users have found that Frontier is 68% cheaper than the other options available to this destination.

  • Can I find deals for flights from Portland to Luis Munoz Marin Intl that include hotel bookings?

    Yes. In addition to deals on Portland to Luis Munoz Marin Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Portland to Luis Munoz Marin Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portland to Luis Munoz Marin Intl.

  • Can I find deals for business class flights from Portland to Luis Munoz Marin Intl?

    Yes. Cheapflights offers flight deals from Portland to Luis Munoz Marin Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Portland, Maine to San Juan Luis Munoz Marin Intl Airport?

    Currently, January is the cheapest month in which you can book a flight from Portland, Maine to San Juan Luis Munoz Marin Intl Airport (average of $88). Flying from Portland, Maine to San Juan Luis Munoz Marin Intl Airport in September is currently the most expensive (average of $147). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near San Juan Luis Munoz Marin Intl Airport?

Book flights to San Juan Luis Munoz Marin Intl Airport if you plan to visit one of these locations
Dorado
Fajardo
Rio Grande
Humacao
Luquillo

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Portland to Luis Munoz Marin Intl

See prices for flight routes from nearby airports that may be better suited for you.
Boston to Luis Munoz Marin Intl flights
Bangor to Luis Munoz Marin Intl flights
Augusta to Luis Munoz Marin Intl flights

Top 6 airlines flying from Portland to Luis Munoz Marin Intl

Discover the top 6 airlines that operate flights from Portland to Luis Munoz Marin Intl. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated November 13, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$145Average$228FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$249Average$588FlexibilityNo cancel feeOn-time69%
DeltaCheapest$274Average$382FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$301Average$577FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$348Average$607FlexibilityNo cancel feeOn-time63%
JetBlueCheapest$361Average$508FlexibilityNo cancel feeOn-time62%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.