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Luis Munoz Marin Intl

$189+ 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 8/23. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — SJU
Aug 3 — Aug 101
Sun 8/3
Sun 8/10
1 adult, Economy
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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

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 July 29, 2025.

Round-trip from

$389
(Southwest)

One-way from

$189
(Mytrip)

Popular in

March

Cheapest in

October

Average price

$580
From Portland to San Juan Luis Munoz Marin Intl
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One-way flight from Portland to San Juan Luis Munoz Marin Intl
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Highest demand for flights based on searches. 8% potential increase in price ($53 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($19 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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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 July 29, 2025.

This Southwest deal was found by Cheapflights users on 7/29. 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 9/96:00 amPDX - SJU
2 stops13h 30mSouthwest
Fri 9/195:50 amSJU - PDX
1 stop13h 10mSouthwest
Deal found 7/29$389
This Delta deal was found by Cheapflights users on 7/27. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/287:15 amPDX - SJU
1 stop13h 32mDelta
Sat 10/42:26 pmSJU - PDX
1 stop10h 21mDelta
Deal found 7/27$399
This Mytrip deal was found by Cheapflights users on 7/28. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/2512:07 pmPDX - SJU
3 stops33h 37mSpirit Airlines
Sun 9/282:48 pmSJU - PDX
2 stops31h 16mSpirit Airlines
Deal found 7/28$403
This American Airlines deal was found by Cheapflights users on 7/28. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/610:45 pmPDX - SJU
1 stop10h 56mAmerican Airlines
Thu 11/136:44 amSJU - PDX
2 stops14h 28mAmerican Airlines
Deal found 7/28$419
This Frontier deal was found by Cheapflights users on 7/28. 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.
Sat 8/27:01 pmPDX - SJU
2 stops17h 51mFrontier
Wed 8/139:30 amSJU - PDX
2 stops16h 54mFrontier
Deal found 7/28$440
This Mytrip deal was found by Cheapflights users on 7/28. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/208:04 pmPDX - SJU
2 stops15h 57mMultiple Airlines
Sat 9/273:19 pmSJU - PDX
3 stops28h 15mMultiple Airlines
Deal found 7/28$476
This United Airlines deal was found by Cheapflights users on 7/29. 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 9/1610:50 pmPDX - SJU
1 stop11h 55mUnited Airlines
Tue 9/301:05 amSJU - PDX
1 stop10h 48mUnited Airlines
Deal found 7/29$489

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 July 29, 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

Tue 9/9

6:00 am-10:30 pm

2 stops13h 30m

San Juan Luis Munoz Marin Intl

Fri 9/19

5:50 am-4:00 pm

1 stop13h 10m

$389

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

Tue 1/20

12:55 am-3:20 pm

1 stop10h 25m

San Juan Luis Munoz Marin Intl

Wed 1/28

7:00 am-7:11 pm

2 stops16h 11m

$399

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

Thu 9/25

12:07 pm-12:44 am

3 stops33h 37m

San Juan Luis Munoz Marin Intl

Sun 9/28

2:48 pm-7:04 pm

2 stops31h 16m

$403

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

Thu 11/6

10:45 pm-1:41 pm

1 stop10h 56m

San Juan Luis Munoz Marin Intl

Thu 11/13

6:44 am-5:12 pm

2 stops14h 28m

$419

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

Sat 9/20

8:04 pm-3:01 pm

2 stops15h 57m

San Juan Luis Munoz Marin Intl

Sat 9/27

3:19 pm-4:34 pm

3 stops28h 15m

$476

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

Tue 9/16

10:50 pm-1:45 pm

1 stop11h 55m

San Juan Luis Munoz Marin Intl

Tue 9/23

1:25 pm-9:37 pm

1 stop11h 12m

$489

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

Sat 8/23

7:52 pm-2:17 pm

2 stops15h 25m

$189

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

Sun 8/31

7:40 am-11:59 pm

2 stops13h 19m

$200

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

Sat 9/13

10:50 pm-1:45 pm

1 stop11h 55m

$245

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

Mon 9/1

9:05 pm-12:45 pm

1 stop12h 40m

$248

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

Showing 1-10 of 14 results
1
2

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 July 25, 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, September is the cheapest month in which you can book a flight from Portland to San Juan Luis Munoz Marin Intl Airport (average of $254). Flying from Portland to San Juan Luis Munoz Marin Intl Airport in June is currently the most expensive (average of $339). 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 July 29, 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 30% versus a flight in the morning.

What is the cheapest day to fly from Portland to San Juan Luis Munoz Marin Intl Airport?

Use this chart to determine the cheapest time to fly round-trip from Portland to Luis Munoz Marin Intl. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Portland to San Juan Luis Munoz Marin Intl Airport flight should consider departing on Sunday afternoons when fares are most often at their lowest. Friday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

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 July 29, 2025.
Read reviews from past customers who have flown Alaska Airlines, Southwest, and Delta 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.
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Overall

8.0

Boarding

8.1

Comfort

7.8

Crew

8.5

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Overall

8.0

Boarding

8.1

Comfort

7.8

Crew

8.5

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Southwest
8.0
Very good
4,238 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Overall

8.0

Boarding

8.1

Comfort

7.8

Crew

8.5

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Delta
8.0
Very good
7,979 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Overall

8.0

Boarding

8.1

Comfort

7.8

Crew

8.5

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
United Airlines
7.4
Good
8,896 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Overall

8.0

Boarding

8.1

Comfort

7.8

Crew

8.5

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Overall

8.0

Boarding

8.1

Comfort

7.8

Crew

8.5

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

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.

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

    According to our current data, Southwest ($389), Delta ($399), and Spirit Airlines ($403) offers the cheapest pricing from Portland to San Juan Luis Munoz Marin Intl Airport. These flights start at 31% 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 Spirit Airlines, which is currently one of the cheapest options available, starting at $189. American Airlines flights start at $200 while deals on United Airlines start at $245 one-way.

  • Where are the most common layover locations when flying from Portland to San Juan Luis Munoz Marin Intl Airport?

    The most popular layover on flights from Portland to San Juan Luis Munoz Marin Intl Airport is Miami.

  • What are some popular things to do or see while on a layover in Miami?

    Most Miami visitors opt to spend their time experiencing Wynwood Art District, Bayfront Park, and Bayside Marketplace. Travelers on a layover in Miami can visit Wynwood Art District, Bayfront Park, and Bayside Marketplace, by traveling 5.5 mi, 6.4 mi, and 6.4 mi, respectively after landing at Miami. Travelers in need of a car in Miami can rent one for about $25 per day.

  • Where are the least popular layover locations for Portland to San Juan Luis Munoz Marin Intl Airport flights?

    Portland to San Juan Luis Munoz Marin Intl Airport flights have a layover in Atlanta least often.

  • 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, September is the cheapest month in which you can book a flight from Portland to San Juan Luis Munoz Marin Intl Airport (average of $254). Flying from Portland to San Juan Luis Munoz Marin Intl Airport in June is currently the most expensive (average of $339). 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.
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 July 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$185Average$369FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$248Average$379FlexibilityNo cancel feeOn-time65%
United AirlinesCheapest$318Average$590FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$328Average$578FlexibilityNo cancel feeOn-time71%
DeltaCheapest$369Average$576FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$450Average$643FlexibilityNo cancel feeOn-time63%

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