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Luis Munoz Marin Intl

$210+ 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 1/12. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — SJU
nov. 27 — dic. 41
jue. 11/27
jue. 12/4
1 adult, Economy
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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”

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Cheapflights Tip: The best prices from Portland to San Juan Luis Munoz Marin Intl are usually found in October or September, booked 49 days in advance, depart on a Tuesday or Saturday and return on a Thursday

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 octubre 28, 2025.

This Frontier deal was found by Cheapflights users on 10/27. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 11/1512:52 pmPDX - SJU
2 stops21h 50mFrontier
jue. 11/203:59 amSJU - PDX
2 stops13h 09mFrontier
Deal found 10/27$372
This Southwest deal was found by Cheapflights users on 10/26. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/96:15 amPDX - SJU
2 stops13h 05mSouthwest
mar. 12/168:55 amSJU - PDX
2 stops14h 25mSouthwest
Deal found 10/26$375
This Southwest deal was found by Cheapflights users on 10/27. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/28:00 amPDX - SJU
2 stops12h 35mSouthwest
mié. 12/108:55 amSJU - PDX
2 stops13h 20mSouthwest
Deal found 10/27$397
This Frontier deal was found by Cheapflights users on 10/26. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 11/37:29 pmPDX - SJU
2 stops18h 25mFrontier
vie. 11/72:11 amSJU - PDX
2 stops13h 45mFrontier
Deal found 10/26$413
This Frontier deal was found by Cheapflights users on 10/28. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/1312:52 pmPDX - SJU
2 stops23h 18mFrontier
jue. 11/201:57 pmSJU - PDX
2 stops22h 07mFrontier
Deal found 10/28$414
This Frontier deal was found by Cheapflights users on 10/26. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 11/107:29 pmPDX - SJU
2 stops18h 25mFrontier
jue. 11/132:11 amSJU - PDX
2 stops13h 45mFrontier
Deal found 10/26$418
This American Airlines deal was found by Cheapflights users on 10/26. 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.
jue. 12/410:15 pmPDX - SJU
1 stop19h 54mAmerican Airlines
mié. 12/1011:00 amSJU - PDX
1 stop16h 52mAmerican Airlines
Deal found 10/26$419
This Frontier deal was found by Cheapflights users on 10/28. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 11/73:26 pmPDX - SJU
2 stops16h 50mFrontier
vie. 11/142:11 amSJU - PDX
2 stops13h 45mFrontier
Deal found 10/28$420
This American Airlines deal was found by Cheapflights users on 10/26. 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.
vie. 12/510:15 pmPDX - SJU
1 stop19h 50mAmerican Airlines
mar. 12/912:49 pmSJU - PDX
1 stop15h 03mAmerican Airlines
Deal found 10/26$429
This Frontier deal was found by Cheapflights users on 10/27. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 11/111:26 pmPDX - SJU
2 stops17h 53mFrontier
vie. 11/142:11 amSJU - PDX
2 stops13h 45mFrontier
Deal found 10/27$445
This American Airlines deal was found by Cheapflights users on 10/25. 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.
sáb. 12/63:15 pmPDX - SJU
2 stops14h 54mAmerican Airlines
sáb. 12/136:54 amSJU - PDX
2 stops14h 34mAmerican Airlines
Deal found 10/25$457

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 (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 octubre 28, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$372
(Frontier)

One-way from

$210
(Delta)

Popular in

December

Cheapest in

October

Average price

$476
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. 9% potential increase in price ($57 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($19 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 octubre 28, 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

PDX - SJU

PDXSJU

Portland

lun. 3/2

11:59 pm-3:40 pm

1 stop11h 41m

San Juan Luis Munoz Marin Intl

vie. 3/6

8:10 am-7:00 pm

2 stops14h 50m

$419

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

mié. 1/21

6:00 am-11:59 pm

2 stops13h 59m

San Juan Luis Munoz Marin Intl

mié. 1/28

3:55 pm-10:15 pm

1 stop10h 20m

$419

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

mar. 1/20

11:05 pm-12:55 pm

1 stop9h 50m

San Juan Luis Munoz Marin Intl

mié. 1/28

2:15 pm-9:49 pm

1 stop11h 34m

$419

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

jue. 2/19

10:52 pm-2:40 pm

1 stop11h 48m

San Juan Luis Munoz Marin Intl

mar. 2/24

8:35 am-5:51 pm

2 stops13h 16m

$448

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

vie. 11/14

7:15 pm-11:35 am

2 stops12h 20m

San Juan Luis Munoz Marin Intl

vie. 11/21

6:40 am-3:05 pm

2 stops12h 25m

$460

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

sáb. 2/14

10:00 am-12:40 am

2 stops10h 40m

San Juan Luis Munoz Marin Intl

vie. 2/20

6:00 am-2:55 pm

2 stops12h 55m

$466

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

mar. 3/3

8:30 am-12:36 am

2 stops12h 06m

San Juan Luis Munoz Marin Intl

mié. 3/4

8:10 am-5:51 pm

2 stops13h 41m

$504

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

jue. 1/22

11:05 pm-2:40 pm

1 stop11h 35m

San Juan Luis Munoz Marin Intl

lun. 1/26

2:05 am-1:45 pm

2 stops15h 40m

$509

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

lun. 1/19

11:05 pm-12:55 pm

1 stop9h 50m

San Juan Luis Munoz Marin Intl

mar. 1/27

2:05 am-2:48 pm

2 stops16h 43m

$509

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

lun. 1/12

6:22 pm-10:48 am

2 stops12h 26m

$210

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/27

Showing 1-10 of 17 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*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*3 stars
CheapOairPrice Accuracy3 starsTrust Score*3 stars
Justfly.comPrice Accuracy3 starsTrust Score*3 stars
CheapTicketsDealPrice 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-San Juan Luis Munoz Marin Intl Airport flights, users find the pricing of CheapOair to be most consistent on Cheapflights vs. CheapOair Users can find the same prices on Portland-San Juan Luis Munoz Marin Intl Airport flight deals on Cheapflights vs. CheapOair >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 CheapOair the most. CheapOair 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?

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 24, 2025.

Booking 49 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, August is the cheapest month in which you can book a flight from Portland to San Juan Luis Munoz Marin Intl Airport (average of $187). Flying from Portland to San Juan Luis Munoz Marin Intl Airport in December is currently the most expensive (average of $419). 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 PDX 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 octubre 28, 2025.

When flying from Portland 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 afternoon, which can drop the price by up to 29% versus a flight in the morning.

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 octubre 28, 2025.
Read reviews from past customers who have flown Southwest, Delta, and United 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
4,240 reviews

Comfort

8.0

Boarding

8.1

Crew

8.6

Food

7.0

Overall

8.0

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
4,240 reviews
Southwest
8.0
Very good
4,240 reviews

Comfort

8.0

Boarding

8.1

Crew

8.6

Food

7.0

Overall

8.0

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
7,994 reviews
Southwest
8.0
Very good
4,240 reviews

Comfort

8.0

Boarding

8.1

Crew

8.6

Food

7.0

Overall

8.0

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
9,001 reviews
Southwest
8.0
Very good
4,240 reviews

Comfort

8.0

Boarding

8.1

Crew

8.6

Food

7.0

Overall

8.0

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
11,032 reviews
Southwest
8.0
Very good
4,240 reviews

Comfort

8.0

Boarding

8.1

Crew

8.6

Food

7.0

Overall

8.0

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
Spirit Airlines
6.3
Okay
8,116 reviews
Southwest
8.0
Very good
4,240 reviews

Comfort

8.0

Boarding

8.1

Crew

8.6

Food

7.0

Overall

8.0

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?

    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 6 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 41m. 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), Spirit Airlines ($248), and American Airlines ($342) offers the cheapest pricing from Portland to San Juan Luis Munoz Marin Intl Airport. These flights start at 67% lower than the current average price 3 months from now.

  • 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, August is the cheapest month in which you can book a flight from Portland to San Juan Luis Munoz Marin Intl Airport (average of $187). Flying from Portland to San Juan Luis Munoz Marin Intl Airport in December is currently the most expensive (average of $419). 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

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.
Boise to Luis Munoz Marin Intl flights
Eugene to Luis Munoz Marin Intl flights
Medford 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 octubre 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$185Average$540FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$248Average$415FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$342Average$592FlexibilityNo cancel feeOn-time71%
DeltaCheapest$358Average$524FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$399Average$594FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$444Average$634FlexibilityNo cancel feeOn-time63%

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