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Luis Munoz Marin Intl

$128+ 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 4/21. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — SJU
Feb 25 — Mar 41
Wed 2/25
Wed 3/4
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 January 26, 2026.

This American Airlines deal was found by Cheapflights users on 1/24. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/1011:59 pm
PDX
-
SJU
2 stops14h 04m
American Airlines
Tue 3/173:40 pm
SJU
-
PDX
1 stop11h 04m
American Airlines
Deal found 1/24$440
This American Airlines deal was found by Cheapflights users on 1/24. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/15:40 am
PDX
-
SJU
1 stop13h 51m
American Airlines
Wed 4/157:25 am
SJU
-
PDX
1 stop16h 34m
American Airlines
Deal found 1/24$455
This United Airlines deal was found by Cheapflights users on 1/25. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/2311:59 pm
PDX
-
SJU
1 stop11h 45m
United Airlines
Wed 4/291:40 pm
SJU
-
PDX
1 stop12h 14m
United Airlines
Deal found 1/25$460
This American Airlines deal was found by Cheapflights users on 1/26. 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.
Mon 2/169:44 pm
PDX
-
SJU
1 stop15h 08m
American Airlines
Fri 2/207:00 am
SJU
-
PDX
1 stop20h 50m
American Airlines
Deal found 1/26$465
This Southwest deal was found by Cheapflights users on 1/25. 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 5/27:40 pm
PDX
-
SJU
2 stops10h 25m
Southwest
Sat 5/99:40 am
SJU
-
PDX
2 stops12h 05m
Southwest
Deal found 1/25$469
This United Airlines deal was found by Cheapflights users on 1/25. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/175:05 am
PDX
-
SJU
1 stop9h 20m
United Airlines
Fri 2/208:05 am
SJU
-
PDX
2 stops14h 44m
United Airlines
Deal found 1/25$476
This American Airlines deal was found by Cheapflights users on 1/26. 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.
Fri 2/2711:52 am
PDX
-
SJU
1 stop13h 32m
American Airlines
Tue 3/32:23 pm
SJU
-
PDX
2 stops13h 54m
American Airlines
Deal found 1/26$478
This CheapOair deal was found by Cheapflights users on 1/25. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/2211:40 pm
PDX
-
SJU
1 stop33h 21m
JetBlue
Fri 5/2912:30 pm
SJU
-
PDX
1 stop12h 55m
JetBlue
Deal found 1/25$485
This Delta deal was found by Cheapflights users on 1/23. 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.
Thu 4/912:30 am
PDX
-
SJU
1 stop10h 45m
Delta
Wed 4/156:15 am
SJU
-
PDX
2 stops12h 52m
Delta
Deal found 1/23$493
This American Airlines deal was found by Cheapflights users on 1/26. 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.
Sat 5/21:55 pm
PDX
-
SJU
1 stop11h 37m
American Airlines
Sat 5/911:38 am
SJU
-
PDX
2 stops13h 54m
American Airlines
Deal found 1/26$494
This American Airlines deal was found by Cheapflights users on 1/26. 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.
Tue 4/2111:40 pm
PDX
-
SJU
1 stop12h 02m
American Airlines
Mon 5/43:07 pm
SJU
-
PDX
1 stop11h 34m
American Airlines
Deal found 1/26$497

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 January 26, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$440
(American Airlines)

One-way from

$128
(Trip.com)

Popular in

December

Cheapest in

October

Average price

$554
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. 11% potential increase in price ($76 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($18 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 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 January 26, 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

PDX - SJU

PDXSJU

Portland

Tue 2/17

5:05 am-6:25 pm

1 stop9h 20m

San Juan Luis Munoz Marin Intl

Fri 2/20

8:05 am-6:49 pm

2 stops14h 44m

$476

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

Thu 4/23

5:10 am-11:40 pm

2 stops15h 30m

San Juan Luis Munoz Marin Intl

Wed 4/29

8:10 am-7:15 pm

2 stops14h 05m

$478

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

Fri 4/24

3:00 pm-8:55 am

2 stops14h 55m

San Juan Luis Munoz Marin Intl

Mon 4/27

2:00 pm-12:25 am

2 stops13h 25m

$493

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

Tue 4/21

7:32 pm-11:50 am

2 stops13h 18m

San Juan Luis Munoz Marin Intl

Mon 5/4

6:15 am-5:10 pm

2 stops13h 55m

$503

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

Wed 2/25

6:30 am-11:10 pm

2 stops12h 40m

San Juan Luis Munoz Marin Intl

Mon 3/9

1:05 pm-10:35 pm

2 stops12h 30m

$505

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

Mon 3/2

8:35 am-12:40 am

2 stops12h 05m

San Juan Luis Munoz Marin Intl

Mon 3/9

1:05 pm-12:45 am

2 stops14h 40m

$505

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

Mon 2/23

6:45 am-12:40 am

2 stops13h 55m

San Juan Luis Munoz Marin Intl

Mon 3/2

5:35 am-1:45 pm

2 stops12h 10m

$505

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

Sun 4/26

11:55 pm-2:55 pm

2 stops12h 00m

San Juan Luis Munoz Marin Intl

Sun 5/3

1:15 pm-12:05 am

2 stops13h 50m

$513

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

Sun 3/1

11:59 pm-3:40 pm

1 stop11h 41m

San Juan Luis Munoz Marin Intl

Tue 3/3

2:05 am-2:48 pm

2 stops16h 43m

$530

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

Sat 2/7

5:20 am-9:30 pm

2 stops12h 10m

San Juan Luis Munoz Marin Intl

Sun 2/15

5:35 am-5:15 pm

2 stops15h 40m

$541

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/26

Showing 1-10 of 21 results
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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 January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*2 stars
eDreamsPrice 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 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?

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 January 23, 2026.

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 $188). Flying from Portland to San Juan Luis Munoz Marin Intl Airport in January is currently the most expensive (average of $400). 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 January 26, 2026.
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
4,268 reviews

Boarding

8.1

Food

7.0

Entertainment

7.5

Comfort

8.0

Overall

8.0

Crew

8.6

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
Southwest
8.0
Very good
4,268 reviews
Southwest
8.0
Very good
4,268 reviews

Boarding

8.1

Food

7.0

Entertainment

7.5

Comfort

8.0

Overall

8.0

Crew

8.6

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
Delta
7.9
Good
8,111 reviews
Southwest
8.0
Very good
4,268 reviews

Boarding

8.1

Food

7.0

Entertainment

7.5

Comfort

8.0

Overall

8.0

Crew

8.6

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
United Airlines
7.4
Good
9,199 reviews
Southwest
8.0
Very good
4,268 reviews

Boarding

8.1

Food

7.0

Entertainment

7.5

Comfort

8.0

Overall

8.0

Crew

8.6

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
American Airlines
7.2
Good
11,189 reviews
Southwest
8.0
Very good
4,268 reviews

Boarding

8.1

Food

7.0

Entertainment

7.5

Comfort

8.0

Overall

8.0

Crew

8.6

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
Spirit Airlines
6.3
Okay
8,379 reviews
Southwest
8.0
Very good
4,268 reviews

Boarding

8.1

Food

7.0

Entertainment

7.5

Comfort

8.0

Overall

8.0

Crew

8.6

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?

    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 9h 20m. Fly via United Airlines, Southwest, 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 ($243), and Delta ($272) 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 Delta, which is currently one of the cheapest options available, starting at $150. American Airlines flights start at $184 while deals on JetBlue start at $185 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, August is the cheapest month in which you can book a flight from Portland to San Juan Luis Munoz Marin Intl Airport (average of $188). Flying from Portland to San Juan Luis Munoz Marin Intl Airport in January is currently the most expensive (average of $400). 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.
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 January 26, 2026.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$185Average$371FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$241Average$382FlexibilityNo cancel feeOn-time65%
DeltaCheapest$272Average$511FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$359Average$606FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$401Average$595FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$454Average$654FlexibilityNo cancel feeOn-time63%

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