$188 Cheap Flights from Portland (PDX) to San Juan (SJU)

View $188 flight on Mon, Nov 10, 2025Opens in a new window

Popular airlines from Portland International Airport (PDX) to Luis Munoz Marin Intl. Airport (SJU)

Cheap Flights from Portland to San Juan (PDX-SJU)

Prices were available within the past 7 days and start at $188 for one-way flights and $370 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Southwest Airlines
Tue, Dec 9 - Wed, Dec 10
PDX
Portland
SJU
San Juan
$370 Roundtrip, found 13 hours ago
$370
Roundtrip
found 13 hours ago
Select Southwest Airlines flight, departing Tue, Dec 9 from Portland to San Juan, returning Wed, Dec 10, priced at $370 found 13 hours ago
Southwest Airlines
Tue, Jan 20 - Tue, Jan 27
PDX
Portland
SJU
San Juan
$375 Roundtrip, just found
$375
Roundtrip
just found
Select Southwest Airlines flight, departing Tue, Jan 20 from Portland to San Juan, returning Tue, Jan 27, priced at $375 just found
JetBlue Airways
Thu, May 7 - Wed, May 20
PDX
Portland
SJU
San Juan
$376 Roundtrip, found 1 day ago
$376
Roundtrip
found 1 day ago
Select JetBlue Airways flight, departing Thu, May 7 from Portland to San Juan, returning Wed, May 20, priced at $376 found 1 day ago
Southwest Airlines
Tue, Dec 9 - Wed, Dec 10
PDX
Portland
SJU
San Juan
$392 Roundtrip, found 13 hours ago
$392
Roundtrip
found 13 hours ago
Select Southwest Airlines flight, departing Tue, Dec 9 from Portland to San Juan, returning Wed, Dec 10, priced at $392 found 13 hours ago
Southwest Airlines
Tue, Jan 20 - Tue, Jan 27
PDX
Portland
SJU
San Juan
$397 Roundtrip, just found
$397
Roundtrip
just found
Select Southwest Airlines flight, departing Tue, Jan 20 from Portland to San Juan, returning Tue, Jan 27, priced at $397 just found
Delta
Tue, Jan 13 - Tue, Jan 20
PDX
Portland
SJU
San Juan
$403 Roundtrip, found 1 hour ago
$403
Roundtrip
found 1 hour ago
Select Delta flight, departing Tue, Jan 13 from Portland to San Juan, returning Tue, Jan 20, priced at $403 found 1 hour ago
JetBlue Airways
Mon, May 4 - Fri, May 8
PDX
Portland
SJU
San Juan
$410 Roundtrip, found 10 hours ago
$410
Roundtrip
found 10 hours ago
Select JetBlue Airways flight, departing Mon, May 4 from Portland to San Juan, returning Fri, May 8, priced at $410 found 10 hours ago
United
Tue, Dec 9 - Wed, Dec 10
PDX
Portland
SJU
San Juan
$414 Roundtrip, found 13 hours ago
$414
Roundtrip
found 13 hours ago
Select United flight, departing Tue, Dec 9 from Portland to San Juan, returning Wed, Dec 10, priced at $414 found 13 hours ago
Delta
Mon, Dec 8 - Tue, Dec 9
PDX
Portland
SJU
San Juan
$414 Roundtrip, found 15 hours ago
$414
Roundtrip
found 15 hours ago
Select Delta flight, departing Mon, Dec 8 from Portland to San Juan, returning Tue, Dec 9, priced at $414 found 15 hours ago
American Airlines
Tue, Dec 9 - Wed, Dec 10
PDX
Portland
SJU
San Juan
$414 Roundtrip, found 13 hours ago
$414
Roundtrip
found 13 hours ago
Select American Airlines flight, departing Tue, Dec 9 from Portland to San Juan, returning Wed, Dec 10, priced at $414 found 13 hours ago

Find the cheapest month to fly from Portland (PDX) to San Juan (SJU)

January is typically the cheapest month to fly

From $246 - $620 per traveler.

Alternative airports near San Juan

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Luis Munoz Marin Intl. SJU. Cheapest option available. Average driving time to city center is 16 minutes. Flights from $545
SJU
Luis Munoz Marin Intl.
Cheapest
Average driving time to city center16 min
Flights from $545

Frequently asked questions

How much does a flight from Portland Intl. Airport (PDX) to Luis Munoz Marin Intl. Airport (SJU) cost?
Lock in a cheap one-way flight from $188 or cheap return flight from $370 from Portland Intl. Airport (PDX) to Luis Munoz Marin Intl. Airport (SJU) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Portland Intl. Airport (PDX) to Luis Munoz Marin Intl. Airport (SJU)?
December is the most affordable month to fly from PDX to SJU. Traveling during an off-peak travel window is often the key to finding better deals on flights.
What is the cheapest airline that flies from Portland Intl. Airport (PDX) to Luis Munoz Marin Intl. Airport (SJU)?
To find the cheapest airline flying from PDX to SJU, use Expedia's filter tool. Tailor your search based on what's important to you, such as preferred carriers and ideal departure window. You can then sort your results by "Price (lowest to highest)" to see the most affordable options first.
How many flights per day from Portland Intl. Airport (PDX) to Luis Munoz Marin Intl. Airport (SJU)?
You'll have to take a flight with a layover if you're traveling from Portland Intl. Airport (PDX) to Luis Munoz Marin Intl. Airport (SJU). Direct flights don't operate daily on this route. However, simply filter your search to include one or more stops to find an option that works for you.
What day of the week has the most flights from PDX to SJU?
You'll usually find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can vary from season to season and during public holidays or peak travel times.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Portland Intl. Airport (PDX) to Luis Munoz Marin Intl. Airport (SJU)?
Select a flight from Portland Intl. Airport (PDX) to Luis Munoz Marin Intl. Airport (SJU) that takes off before 3 PM to reduce the likelihood of delays and cancellations. Later departures have a 22% higher chance of being canceled, on average.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Portland Intl. Airport (PDX) to Luis Munoz Marin Intl. Airport (SJU) last-minute?
Last-minute fares from PDX to SJU are usually more expensive. To secure the lowest rates, start looking for flights as early as possible. That being said, if you're flexible with your travel dates, you may score a cheap fare right before your trip.
Can I cancel or change the date of my flight from Portland Intl. Airport (PDX) to Luis Munoz Marin Intl. Airport (SJU)?
In most cases, you're able to cancel or reschedule your PDX to SJU flight. However, there may be additional charges, especially if your booking was made over 24 hours ago. Double-check your itinerary for the airline's guidelines and fees on flight changes, or if you'd like further information, head to our Customer Service portal.

Travel information

Origin airport
Portland Intl.
Destination airport
Luis Munoz Marin Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, JetBlue Airways, Southwest Airlines, Sun Country Airlines, United
Roundtrip price
$369
Distance
3712 mi

Book with confidence

Portland to San Juan Flights

The cheapest times to fly from Portland to San Juan

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Portland to San Juan are during the month of December. You can find some of the cheapest flights from Portland to San Juan with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Portland to San Juan

Sunday is one of the best days to book for cheap flights from Portland to San Juan: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Portland to San Juan

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Portland to San Juan in 2025. You can also book with separate airlines for your outbound and return journeys, from $188 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Portland to San Juan flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Portland to San Juan airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Portland to San Juan Flights

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*Available to One Key members.