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Luis Munoz Marin Intl

$141+ 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 10/20. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — SJU
Nov 12 — Nov 191
Wed 11/12
Wed 11/19
1 adult, Economy
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1. Tell us where you want to go

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Cheapflights Tip: The best prices from Portland to San Juan Luis Munoz Marin Intl are usually found in September 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 October 13, 2025.

This American Airlines deal was found by Cheapflights users on 10/11. 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.
Sat 12/65:18 pmPWM - SJU
2 stops17h 41mAmerican Airlines
Tue 12/911:00 amSJU - PWM
2 stops13h 37mAmerican Airlines
Deal found 10/11$235
This Delta deal was found by Cheapflights users on 10/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/62:34 pmPWM - SJU
1 stop8h 25mDelta
Tue 12/97:15 amSJU - PWM
1 stop7h 39mDelta
Deal found 10/11$275
This American Airlines deal was found by Cheapflights users on 10/11. 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.
Fri 12/512:23 pmPWM - SJU
2 stops10h 29mAmerican Airlines
Tue 12/98:20 amSJU - PWM
2 stops16h 17mAmerican Airlines
Deal found 10/11$298
This Expedia deal was found by Cheapflights users on 10/11. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/54:45 pmPWM - SJU
1 stop7h 02mJetBlue
Mon 11/108:15 amSJU - PWM
1 stop8h 25mJetBlue
Deal found 10/11$300
This Delta deal was found by Cheapflights users on 10/11. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/62:34 pmPWM - SJU
1 stop8h 25mDelta
Mon 12/86:35 pmSJU - PWM
1 stop6h 24mDelta
Deal found 10/11$319
This Southwest deal was found by Cheapflights users on 10/11. 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.
Fri 12/512:45 pmPWM - SJU
1 stop9h 35mSouthwest
Tue 12/96:40 amSJU - PWM
1 stop9h 15mSouthwest
Deal found 10/11$330
This Southwest deal was found by Cheapflights users on 10/12. 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.
Tue 12/912:45 pmPWM - SJU
2 stops10h 50mSouthwest
Sat 12/206:35 amSJU - PWM
2 stops11h 30mSouthwest
Deal found 10/12$336
This American Airlines deal was found by Cheapflights users on 10/12. 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.
Tue 12/93:34 pmPWM - SJU
1 stop7h 18mAmerican Airlines
Sat 12/208:25 amSJU - PWM
1 stop15h 26mAmerican Airlines
Deal found 10/12$361
This American Airlines deal was found by Cheapflights users on 10/11. 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.
Sat 12/65:18 pmPWM - SJU
2 stops17h 41mAmerican Airlines
Mon 12/86:25 amSJU - PWM
1 stop10h 02mAmerican Airlines
Deal found 10/11$380
This American Airlines deal was found by Cheapflights users on 10/11. 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.
Sat 11/112:34 pmPWM - SJU
2 stops11h 21mAmerican Airlines
Sat 11/86:25 amSJU - PWM
1 stop12h 45mAmerican Airlines
Deal found 10/11$383
This United Airlines deal was found by Cheapflights users on 10/11. 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.
Sat 12/63:00 pmPWM - SJU
1 stop8h 36mUnited Airlines
Mon 12/82:05 amSJU - PWM
1 stop8h 05mUnited Airlines
Deal found 10/11$398
This United Airlines deal was found by Cheapflights users on 10/11. 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 10/226:00 amPWM - SJU
2 stops14h 38mUnited Airlines
Sun 10/264:50 pmSJU - PWM
1 stop7h 09mUnited Airlines
Deal found 10/11$411

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 October 13, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$235
(American Airlines)

One-way from

$141
(Delta)

Popular in

February

Cheapest in

September

Average price

$371
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. 6% potential increase in price ($34 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($16 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 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 October 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

Sat 1/24

3:05 pm-12:36 am

1 stop8h 31m

San Juan Luis Munoz Marin Intl

Fri 2/6

2:05 am-2:39 pm

2 stops13h 34m

$262

PortlandSan Juan

PWM - SJU

PWMSJU

Portland

Tue 12/9

5:17 pm-10:09 am

2 stops15h 52m

San Juan Luis Munoz Marin Intl

Sat 12/20

8:25 am-10:51 pm

1 stop15h 26m

$298

PortlandSan Juan

PWM - SJU

PWMSJU

Portland

Thu 2/5

12:46 pm-11:56 pm

2 stops10h 10m

San Juan Luis Munoz Marin Intl

Mon 2/9

5:06 pm-10:54 pm

1 stop6h 48m

$298

PortlandSan Juan

PWM - SJU

PWMSJU

Portland

Sat 1/24

12:40 pm-11:56 pm

1 stop10h 16m

San Juan Luis Munoz Marin Intl

Sat 2/7

7:00 am-3:31 pm

1 stop9h 31m

$298

PortlandSan Juan

PWM - SJU

PWMSJU

Portland

Tue 2/3

5:35 am-6:22 pm

2 stops11h 47m

San Juan Luis Munoz Marin Intl

Thu 2/12

2:40 pm-11:44 pm

2 stops10h 04m

$298

PortlandSan Juan

PWM - SJU

PWMSJU

Portland

Tue 12/9

12:45 pm-12:35 am

2 stops10h 50m

San Juan Luis Munoz Marin Intl

Sat 12/20

6:35 am-5:05 pm

2 stops11h 30m

$336

PortlandSan Juan

PWM - SJU

PWMSJU

Portland

Mon 10/20

1:27 pm-9:59 pm

1 stop8h 32m

$141

PortlandSan Juan

PWM - SJU

PWMSJU

Portland

Sat 11/22

6:18 pm-8:27 pm

2 stops25h 09m

$256

PortlandSan Juan

PWM - SJU

PWMSJU

Portland

Fri 1/16

1:00 pm-12:05 am

1 stop10h 05m

$273

PortlandSan Juan

PWM - SJU

PWMSJU

Portland

Thu 1/15

5:35 am-7:20 pm

2 stops12h 45m

$273

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/13

Showing 1-10 of 14 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 October.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Portland, Maine-San Juan Luis Munoz Marin Intl Airport flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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 October 10, 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 $84). 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 October 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 October 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
4,235 reviews

Entertainment

7.5

Overall

8.0

Crew

8.6

Boarding

8.1

Comfort

8.0

Food

7.0

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
4,235 reviews
Southwest
8.0
Very good
4,235 reviews

Entertainment

7.5

Overall

8.0

Crew

8.6

Boarding

8.1

Comfort

8.0

Food

7.0

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
8.0
Very good
7,973 reviews
Southwest
8.0
Very good
4,235 reviews

Entertainment

7.5

Overall

8.0

Crew

8.6

Boarding

8.1

Comfort

8.0

Food

7.0

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
8,974 reviews
Southwest
8.0
Very good
4,235 reviews

Entertainment

7.5

Overall

8.0

Crew

8.6

Boarding

8.1

Comfort

8.0

Food

7.0

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
11,045 reviews
Southwest
8.0
Very good
4,235 reviews

Entertainment

7.5

Overall

8.0

Crew

8.6

Boarding

8.1

Comfort

8.0

Food

7.0

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
2,904 reviews
Southwest
8.0
Very good
4,235 reviews

Entertainment

7.5

Overall

8.0

Crew

8.6

Boarding

8.1

Comfort

8.0

Food

7.0

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 31m. 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 Delta, from $275, and United Airlines, from $285. Users have found that Frontier is 69% 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 $84). 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
Luquillo
Humacao

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Alternative routes for Portland to Luis Munoz Marin Intl

See prices for flight routes from nearby airports that may be better suited for you.
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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 October 13, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$145Average$228FlexibilityNo cancel feeOn-time62%
DeltaCheapest$275Average$386FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$285Average$623FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$301Average$623FlexibilityNo cancel feeOn-time71%
JetBlueCheapest$361Average$512FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$371Average$650FlexibilityNo cancel feeOn-time63%

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