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Luis Munoz Marin Intl

$167+ Cheap flights from Portland (PDX) 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 5/18. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — SJU
May 27 — Jun 31
Wed 5/27
Wed 6/3
1 adult, Economy
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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 April 27, 2026.

This Southwest deal was found by Cheapflights users on 4/25. 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.
Sat 9/1910:45 pm
PDX
-
SJU
1 stop11h 15m
Southwest
Thu 9/2411:35 am
SJU
-
PDX
2 stops12h 35m
Southwest
Deal found 4/25$466
This Southwest deal was found by Cheapflights users on 4/24. 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 9/1810:45 pm
PDX
-
SJU
1 stop11h 25m
Southwest
Mon 9/215:30 am
SJU
-
PDX
1 stop12h 30m
Southwest
Deal found 4/24$481
This United Airlines deal was found by Cheapflights users on 4/24. 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.
Sun 5/107:05 pm
PDX
-
SJU
2 stops13h 59m
United Airlines
Thu 5/143:56 pm
SJU
-
PDX
1 stop10h 59m
United Airlines
Deal found 4/24$496
This Southwest deal was found by Cheapflights users on 4/24. 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.
Sat 8/1510:45 pm
PDX
-
SJU
2 stops15h 20m
Southwest
Sun 8/301:50 pm
SJU
-
PDX
2 stops12h 50m
Southwest
Deal found 4/24$498
This United Airlines deal was found by Cheapflights users on 4/24. 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.
Sun 5/1011:59 pm
PDX
-
SJU
1 stop12h 43m
United Airlines
Sat 6/61:00 am
SJU
-
PDX
1 stop11h 25m
United Airlines
Deal found 4/24$513
This Southwest deal was found by Cheapflights users on 4/24. 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 10/227:40 pm
PDX
-
SJU
2 stops10h 40m
Southwest
Mon 11/211:20 am
SJU
-
PDX
2 stops13h 40m
Southwest
Deal found 4/24$516
This Delta deal was found by Cheapflights users on 4/23. 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.
Fri 5/295:51 pm
PDX
-
SJU
2 stops16h 29m
Delta
Thu 6/41:16 pm
SJU
-
PDX
2 stops13h 28m
Delta
Deal found 4/23$530
This American Airlines deal was found by Cheapflights users on 4/25. 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 7/2810:57 pm
PDX
-
SJU
2 stops12h 53m
American Airlines
Mon 8/37:00 am
SJU
-
PDX
1 stop19h 29m
American Airlines
Deal found 4/25$533
This American Airlines deal was found by Cheapflights users on 4/26. 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 8/1211:20 pm
PDX
-
SJU
2 stops13h 43m
American Airlines
Fri 8/213:44 pm
SJU
-
PDX
1 stop10h 23m
American Airlines
Deal found 4/26$535
This American Airlines deal was found by Cheapflights users on 4/27. 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.
Mon 6/15:10 am
PDX
-
SJU
2 stops13h 49m
American Airlines
Sun 6/76:21 am
SJU
-
PDX
1 stop20h 02m
American Airlines
Deal found 4/27$548

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 (PDX) 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 April 27, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$466
(Southwest)

One-way from

$167
(Kiwi.com)

Popular in

December

Cheapest in

October

Average price

$555
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. 10% potential increase in price ($66 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($16 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
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 April 27, 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

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

Sun 5/10

11:59 pm-3:42 pm

1 stop12h 43m

San Juan Luis Munoz Marin Intl

Sat 6/6

1:00 am-9:25 am

1 stop11h 25m

$513

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

Fri 5/29

11:12 pm-1:20 pm

1 stop11h 08m

San Juan Luis Munoz Marin Intl

Thu 6/4

1:16 pm-11:44 pm

2 stops13h 28m

$530

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

Mon 5/25

11:30 pm-12:34 pm

1 stop10h 04m

San Juan Luis Munoz Marin Intl

Sun 5/31

1:00 am-9:25 am

1 stop11h 25m

$530

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

Mon 5/18

10:15 pm-12:04 pm

1 stop10h 49m

San Juan Luis Munoz Marin Intl

Mon 5/25

1:00 am-9:25 am

1 stop11h 25m

$549

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

Mon 5/11

7:00 am-11:35 pm

1 stop13h 35m

San Juan Luis Munoz Marin Intl

Fri 5/15

2:35 pm-10:02 pm

1 stop10h 27m

$576

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

Wed 5/6

6:30 am-10:40 pm

2 stops13h 10m

San Juan Luis Munoz Marin Intl

Tue 5/12

11:25 am-11:00 pm

2 stops14h 35m

$656

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

Sat 5/2

7:00 am-11:50 pm

2 stops13h 50m

San Juan Luis Munoz Marin Intl

Sat 5/9

7:40 am-8:58 pm

2 stops16h 18m

$666
Quickest round-trip

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

Tue 6/30

5:00 am-5:38 pm

1 stop9h 38m

San Juan Luis Munoz Marin Intl

Mon 7/13

1:00 am-9:25 am

1 stop11h 25m

$683

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

Mon 5/11

5:10 am-11:40 pm

2 stops15h 30m

San Juan Luis Munoz Marin Intl

Sun 5/24

7:25 am-7:40 pm

2 stops15h 15m

$716

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

Mon 5/25

6:10 am-11:25 pm

2 stops14h 15m

San Juan Luis Munoz Marin Intl

Mon 6/1

2:00 pm-12:10 am

2 stops13h 10m

$733

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/26

Showing 1-10 of 20 resultsSorted by cheapest first
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 April.
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-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-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-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-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-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 to San Juan Luis Munoz Marin Intl Airport?

Booking 36 days in advance of your planned departure date is, on average, the best time to get cheap flights from Portland to San Juan Luis Munoz Marin Intl Airport. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, October is the cheapest month in which you can book a flight from Portland to San Juan Luis Munoz Marin Intl Airport (average of $489). Flying from Portland to San Juan Luis Munoz Marin Intl Airport in December is currently the most expensive (average of $745). 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 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 April 27, 2026.
Read reviews from past customers who have flown Southwest,Delta, andUnited Airlines from Portland to San Juan Luis Munoz Marin Intl Airport. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,321 reviews

Entertainment

7.5

Crew

8.6

Overall

8.0

Boarding

8.1

Food

7.0

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Southwest
8.0
Very good
4,321 reviews
Southwest
8.0
Very good
4,321 reviews

Entertainment

7.5

Crew

8.6

Overall

8.0

Boarding

8.1

Food

7.0

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
Delta
7.9
Good
8,462 reviews
Southwest
8.0
Very good
4,321 reviews

Entertainment

7.5

Crew

8.6

Overall

8.0

Boarding

8.1

Food

7.0

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
United Airlines
7.4
Good
9,665 reviews
Southwest
8.0
Very good
4,321 reviews

Entertainment

7.5

Crew

8.6

Overall

8.0

Boarding

8.1

Food

7.0

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
JetBlue
7.2
Good
2,963 reviews
Southwest
8.0
Very good
4,321 reviews

Entertainment

7.5

Crew

8.6

Overall

8.0

Boarding

8.1

Food

7.0

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.
American Airlines
7.1
Good
11,667 reviews
Southwest
8.0
Very good
4,321 reviews

Entertainment

7.5

Crew

8.6

Overall

8.0

Boarding

8.1

Food

7.0

Comfort

8.0

Reviews

1 / 20
2.0
Mediocre

Dominic,Mar 2026

MCO - SMF

I had to try and sleep on the floor of the Austin airport. I spent 12 hours there. The airline policies were so poor, that a near violent argument broke out between the people in front of me and the flight attendants - making for a super stressful situation at 30,000 feet. Garbage airline choice by Kayak Garbage idea to book a flight with a layover. Next time I will pay for a quality booking myself, and somehow force the company to reimburse it.

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?

    If you book a flight to San Juan Luis Munoz Marin Intl from Portland, you will be flying from Portland, which is the city’s only airport. Portland (PDX) is located 6.0 mi from the center of Portland. There are 0 flights from Portland to San Juan Luis Munoz Marin Intl per day from 5 different airlines.

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

    There are many flights that can get you from Portland to San Juan Luis Munoz Marin Intl Airport in 11h 08m. Fly via United Airlines or Delta to get the fastest option. There are 3710 mi between Portland and San Juan Luis Munoz Marin Intl Airport. This flight may include one or multiple stops.

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

    According to our current data, JetBlue ($185), Delta ($235), and American Airlines ($399) offers the cheapest pricing from Portland to San Juan Luis Munoz Marin Intl Airport. These flights start at 68% lower than the current average price 3 months from now.

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

    To fly one-way, consider booking your trip with JetBlue, which is currently one of the cheapest options available, starting at $185. Delta flights start at $190 while deals on Southwest start at $190 one-way.

  • 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 to San Juan Luis Munoz Marin Intl Airport?

    Currently, October is the cheapest month in which you can book a flight from Portland to San Juan Luis Munoz Marin Intl Airport (average of $489). Flying from Portland to San Juan Luis Munoz Marin Intl Airport in December is currently the most expensive (average of $745). 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
Luquillo
Rio Grande
Dorado
Humacao
Bayamón

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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.
Boise to Luis Munoz Marin Intl flights
Medford to Luis Munoz Marin Intl flights
Eugene to Luis Munoz Marin Intl flights

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 April 27, 2026.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$185Average$369FlexibilityNo cancel feeOn-time62%
DeltaCheapest$235Average$485FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$399Average$628FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$408Average$585FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$419Average$590FlexibilityNo cancel feeOn-time69%

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