Luis Munoz Marin Intl

$106+ 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 5/9. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — SJU
Mar 14 — Mar 211
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Cheap 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 February 12, 2026.

This United Airlines deal was found by Cheapflights users on 2/8. 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 5/273:15 pm
PWM
-
SJU
1 stop8h 35m
United Airlines
Fri 5/291:00 am
SJU
-
PWM
1 stop8h 11m
United Airlines
Deal found 2/8$212
This United Airlines deal was found by Cheapflights users on 2/9. 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.
Mon 4/276:04 am
PWM
-
SJU
1 stop8h 40m
United Airlines
Tue 5/57:20 am
SJU
-
PWM
1 stop7h 29m
United Airlines
Deal found 2/9$254
This Delta deal was found by Cheapflights users on 2/9. 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.
Tue 2/245:31 am
PWM
-
SJU
1 stop10h 56m
Delta
Tue 3/107:00 am
SJU
-
PWM
1 stop6h 50m
Delta
Deal found 2/9$276
This Delta deal was found by Cheapflights users on 2/10. 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 5/22:51 pm
PWM
-
SJU
1 stop9h 08m
Delta
Sat 5/97:00 am
SJU
-
PWM
1 stop6h 58m
Delta
Deal found 2/10$286
This United Airlines deal was found by Cheapflights users on 2/8. 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.
Tue 5/59:39 am
PWM
-
SJU
1 stop10h 55m
United Airlines
Tue 5/51:00 am
SJU
-
PWM
2 stops9h 18m
United Airlines
Deal found 2/8$297
This United Airlines deal was found by Cheapflights users on 2/10. 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.
Tue 6/26:00 am
PWM
-
SJU
1 stop7h 45m
United Airlines
Fri 6/51:00 am
SJU
-
PWM
2 stops13h 26m
United Airlines
Deal found 2/10$310
This American Airlines deal was found by Cheapflights users on 2/11. 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 5/27:23 pm
PWM
-
SJU
2 stops13h 50m
American Airlines
Sat 5/96:00 am
SJU
-
PWM
1 stop17h 22m
American Airlines
Deal found 2/11$311
This United Airlines deal was found by Cheapflights users on 2/11. 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.
Tue 5/123:39 pm
PWM
-
SJU
1 stop8h 11m
United Airlines
Mon 5/181:00 am
SJU
-
PWM
2 stops9h 18m
United Airlines
Deal found 2/11$312
This Southwest deal was found by Cheapflights users on 2/9. 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 3/114:30 pm
PWM
-
SJU
1 stop6h 30m
Southwest
Wed 3/185:15 am
SJU
-
PWM
1 stop10h 40m
Southwest
Deal found 2/9$331

Find 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 February 12, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$212
(United Airlines)

One-way from

$106
(United Airlines)

Popular in

February

Cheapest in

November

Average price

$662
Provider with most accurate pricing for Portland-San Juan Luis Munoz Marin Intl flight deals.
Provider most trusted by Cheapflights users for Portland-San Juan Luis Munoz Marin Intl flights.
From Portland to San Juan Luis Munoz Marin Intl
One-way flight from Portland to San Juan Luis Munoz Marin Intl
Highest demand for flights based on searches. 11% potential increase in price ($60 potential increase over avg. RT price).
Cheapest flight prices on average. 4% potential price decrease ($20 potential savings vs. average RT price).
Average for round-trip flights in February 2026

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 February 12, 2026.
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

Tue 2/24

5:31 am-5:27 pm

1 stop10h 56m

San Juan Luis Munoz Marin Intl

Tue 3/10

7:00 am-1:50 pm

1 stop6h 50m

$276

PortlandSan Juan

PWM - SJU

PWMSJU

Portland

Sat 5/2

2:51 pm-11:59 pm

1 stop9h 08m

San Juan Luis Munoz Marin Intl

Sat 5/9

7:00 am-1:58 pm

1 stop6h 58m

$286

PortlandSan Juan

PWM - SJU

PWMSJU

Portland

Tue 5/12

2:38 pm-11:43 pm

1 stop9h 05m

San Juan Luis Munoz Marin Intl

Tue 5/19

7:00 am-1:58 pm

1 stop6h 58m

$286

PortlandSan Juan

PWM - SJU

PWMSJU

Portland

Tue 5/5

9:39 am-8:34 pm

1 stop10h 55m

San Juan Luis Munoz Marin Intl

Tue 5/5

1:00 am-8:49 am

1 stop7h 49m

$297

PortlandSan Juan

PWM - SJU

PWMSJU

Portland

Sat 5/9

3:39 pm-11:50 pm

1 stop8h 11m

$106

PortlandSan Juan

PWM - SJU

PWMSJU

Portland

Tue 4/21

6:04 am-8:38 pm

2 stops14h 34m

$111

PortlandSan Juan

PWM - SJU

PWMSJU

Portland

Sat 4/25

6:00 am-8:34 pm

2 stops14h 34m

$111

PortlandSan Juan

PWM - SJU

PWMSJU

Portland

Thu 4/23

7:23 pm-9:13 am

2 stops13h 50m

$121

PortlandSan Juan

PWM - SJU

PWMSJU

Portland

Wed 4/22

7:23 pm-9:13 am

2 stops13h 50m

$121

PortlandSan Juan

PWM - SJU

PWMSJU

Portland

Sat 4/25

6:00 am-10:05 pm

1 stop16h 05m

$121

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/9

Showing 1-10 of 11 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 February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*2 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 February 6, 2026.

The best time to book flights from Portland, Maine to San Juan Luis Munoz Marin Intl Airport is 45 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 $93). Flying from Portland, Maine to San Juan Luis Munoz Marin Intl Airport in November is currently the most expensive (average of $177). 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.

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 February 12, 2026.
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.

Crew

8.6

Food

7.0

Entertainment

7.5

Comfort

8.0

Boarding

8.1

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

Crew

8.6

Food

7.0

Entertainment

7.5

Comfort

8.0

Boarding

8.1

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

Crew

8.6

Food

7.0

Entertainment

7.5

Comfort

8.0

Boarding

8.1

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

Crew

8.6

Food

7.0

Entertainment

7.5

Comfort

8.0

Boarding

8.1

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

Crew

8.6

Food

7.0

Entertainment

7.5

Comfort

8.0

Boarding

8.1

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

Crew

8.6

Food

7.0

Entertainment

7.5

Comfort

8.0

Boarding

8.1

Overall

8.0

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

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 5 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 10h 56m. There are 1758 mi between Portland, Maine and San Juan Luis Munoz Marin Intl Airport.

  • 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 $176. Other airlines that can offer you cheap pricing are JetBlue, from $190, and United Airlines, from $241. Users have found that Delta is 60% cheaper than the other options available to this destination.

  • What are the cheapest airlines to fly from Portland, Maine to San Juan Luis Munoz Marin Intl Airport one-way?

    For one-way options, check prices for Frontier. According to our data, you can fly for as low as $86. Users have also found prices from $106 and $146 on United Airlines and American Airlines, respectively.

  • 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 $93). Flying from Portland, Maine to San Juan Luis Munoz Marin Intl Airport in November is currently the most expensive (average of $177). 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
Fajardo
Dorado
Luquillo
Rio Grande
Humacao
Bayamón

Browse thousands of different options on Cheapflights for your next trip

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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.

Top 5 airlines flying from Portland to Luis Munoz Marin Intl

Discover the top 5 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 February 12, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$176Average$369FlexibilityNo cancel feeOn-timeN/A
JetBlueCheapest$190Average$508FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$241Average$623FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$256Average$573FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$315Average$565FlexibilityNo cancel feeOn-time63%

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