$144+ 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 1/4. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — SJU
Jan 11 — Jan 181
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”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.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
Cheapest flights from Portland to Luis Munoz Marin IntlExplore 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 December 12, 2025.
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 December 12, 2025.
This eDestinos deal was found by Cheapflights users on 12/10. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/198:45 pmPDX - SJU
3 stops48h 39mMultiple Airlines
Fri 1/97:10 amSJU - PDX
3 stops43h 36mMultiple Airlines
Deal found 12/10![Multiple Airlines logo]()
$593
This American Airlines deal was found by Cheapflights users on 12/10. 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 12/1310:15 pmPDX - SJU
1 stop12h 00mAmerican Airlines
Sat 12/2010:25 amSJU - PDX
1 stop18h 34mAmerican Airlines
Deal found 12/10![American Airlines logo]()
$655
This American Airlines deal was found by Cheapflights users on 12/11. 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 12/123:15 pmPDX - SJU
2 stops14h 54mAmerican Airlines
Fri 12/194:38 pmSJU - PDX
2 stops13h 00mAmerican Airlines
Deal found 12/11![American Airlines logo]()
$715
This Delta deal was found by Cheapflights users on 12/11. 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.
Sat 12/135:30 amPDX - SJU
2 stops13h 50mDelta
Tue 12/237:30 amSJU - PDX
2 stops18h 29mDelta
Deal found 12/11![Delta logo]()
$725
This American Airlines deal was found by Cheapflights users on 12/11. 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 12/1511:59 pmPDX - SJU
1 stop17h 26mAmerican Airlines
Wed 12/177:00 amSJU - PDX
2 stops14h 28mAmerican Airlines
Deal found 12/11![American Airlines logo]()
$760
This American Airlines deal was found by Cheapflights users on 12/10. 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 12/2611:59 pmPDX - SJU
1 stop19h 23mAmerican Airlines
Sun 1/114:49 pmSJU - PDX
1 stop10h 57mAmerican Airlines
Deal found 12/10![American Airlines logo]()
$775
This Delta deal was found by Cheapflights users on 12/10. 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.
Sat 12/135:25 amPDX - SJU
2 stops13h 55mDelta
Sat 12/201:10 pmSJU - PDX
2 stops14h 45mDelta
Deal found 12/10![Delta logo]()
$855
This American Airlines deal was found by Cheapflights users on 12/10. 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 12/1811:21 pmPDX - SJU
1 stop10h 25mAmerican Airlines
Mon 1/196:00 amSJU - PDX
1 stop21h 46mAmerican Airlines
Deal found 12/10![American Airlines logo]()
$890
This American Airlines deal was found by Cheapflights users on 12/9. 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 12/257:00 amPDX - SJU
1 stop12h 22mAmerican Airlines
Mon 12/293:49 pmSJU - PDX
1 stop11h 17mAmerican Airlines
Deal found 12/9![American Airlines logo]()
$905
This United Airlines deal was found by Cheapflights users on 12/11. 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.
Sat 12/135:00 amPDX - SJU
2 stops15h 36mUnited Airlines
Sat 12/205:50 pmSJU - PDX
2 stops20h 11mUnited Airlines
Deal found 12/11![United Airlines logo]()
$910
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 December 12, 2025.
Most accurate provider | CheapOair 3 stars |
|---|---|
Most trusted provider | CheapOair 3 stars |
Round-trip from | $369 (Southwest) |
One-way from | $144 (Kiwi.com) |
Popular in | December |
Cheapest in | October |
Average price | $769 |
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 December 12, 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
Mon 2/2
7:00 am-9:00 pm
1 stop10h 00m
San Juan Luis Munoz Marin Intl
Thu 2/5
2:15 pm-9:49 pm
1 stop11h 34m
$419
PortlandSan Juan
PDX - SJU
PDXSJU
Portland
Tue 1/13
7:00 am-9:26 pm
1 stop10h 26m
San Juan Luis Munoz Marin Intl
Wed 2/4
3:46 pm-10:53 pm
1 stop11h 07m
$419
PortlandSan Juan
PDX - SJU
PDXSJU
Portland
Sun 2/1
1:24 pm-6:11 am
2 stops12h 47m
San Juan Luis Munoz Marin Intl
Tue 2/10
3:46 pm-10:53 pm
1 stop11h 07m
$419
PortlandSan Juan
PDX - SJU
PDXSJU
Portland
Sat 1/24
9:45 pm-1:06 pm
1 stop11h 21m
San Juan Luis Munoz Marin Intl
Tue 2/3
2:15 pm-10:15 pm
1 stop12h 00m
$429
PortlandSan Juan
PDX - SJU
PDXSJU
Portland
Sun 1/25
6:50 am-11:45 pm
1 stop12h 55m
San Juan Luis Munoz Marin Intl
Fri 2/6
3:20 pm-12:17 am
2 stops12h 57m
$429
PortlandSan Juan
PDX - SJU
PDXSJU
Portland
Fri 1/23
9:45 pm-1:05 pm
1 stop11h 20m
San Juan Luis Munoz Marin Intl
Tue 2/3
2:15 pm-10:15 pm
1 stop12h 00m
$429
PortlandSan Juan
PDX - SJU
PDXSJU
Portland
Fri 1/23
9:45 pm-1:05 pm
1 stop11h 20m
San Juan Luis Munoz Marin Intl
Fri 2/6
7:30 am-8:59 pm
2 stops17h 29m
$429
PortlandSan Juan
PDX - SJU
PDXSJU
Portland
Fri 1/9
11:05 pm-2:40 pm
1 stop11h 35m
San Juan Luis Munoz Marin Intl
Wed 1/14
7:45 am-6:56 pm
2 stops15h 11m
$449
PortlandSan Juan
PDX - SJU
PDXSJU
Portland
Sat 1/24
5:30 am-11:57 pm
2 stops14h 27m
San Juan Luis Munoz Marin Intl
Thu 2/5
7:30 am-8:59 pm
2 stops17h 29m
$490
PortlandSan Juan
PDX - SJU
PDXSJU
Portland
Mon 1/26
7:00 am-11:57 pm
1 stop12h 57m
San Juan Luis Munoz Marin Intl
Wed 2/4
3:55 pm-10:15 pm
1 stop10h 20m
$490
Showing 1-10 of 22 results
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 December.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- 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 December 5, 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 $186). 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 December 12, 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 December 12, 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.
Overall
7.9
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Food
7.0
Crew
8.6
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Overall
7.9
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Food
7.0
Crew
8.6
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Overall
7.9
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Food
7.0
Crew
8.6
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Overall
7.9
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Food
7.0
Crew
8.6
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Overall
7.9
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Food
7.0
Crew
8.6
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
Overall
7.9
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Food
7.0
Crew
8.6
Reviews
1 / 20
2.0
MediocreThomas,Dec 2025
SEA - DEN
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.
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 locationsDorado
Fajardo
Rio Grande
Humacao
Luquillo
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.
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 December 12, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$185 | Average$540 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$243 | Average$330 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$329 | Average$522 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$347 | Average$596 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$399 | Average$596 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$444 | Average$634 | FlexibilityNo cancel fee | On-time63% |