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Luis Munoz Marin Intl

$173+ 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 10/1. Fares are subject to change and may not be available on all flights or dates of travel.
PDX — SJU
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
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 September or October, 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 September 11, 2025.

Round-trip from

$418
(Frontier)

One-way from

$173
(Booking.com)

Popular in

December

Cheapest in

September

Average price

$453
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. 6% potential increase in price ($42 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($18 potential savings vs. average RT price).
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Average for round-trip flights in September 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 September 11, 2025.

This Frontier deal was found by Cheapflights users on 9/8. 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.
Sun 11/93:26 pmPDX - SJU
2 stops17h 51mFrontier
Thu 11/132:11 amSJU - PDX
2 stops13h 45mFrontier
Deal found 9/8$393
This Frontier deal was found by Cheapflights users on 9/9. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/73:26 pmPDX - SJU
2 stops19h 16mFrontier
Sun 11/162:11 amSJU - PDX
2 stops13h 45mFrontier
Deal found 9/9$418
This Delta deal was found by Cheapflights users on 9/10. 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.
Sun 11/910:10 pmPDX - SJU
1 stop10h 36mDelta
Thu 11/133:20 pmSJU - PDX
1 stop10h 45mDelta
Deal found 9/10$419
This Mytrip deal was found by Cheapflights users on 9/9. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/2512:07 pmPDX - SJU
2 stops19h 57mSpirit Airlines
Mon 9/2910:42 amSJU - PDX
2 stops27h 29mSpirit Airlines
Deal found 9/9$430
This Mytrip deal was found by Cheapflights users on 9/9. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/258:00 amPDX - SJU
3 stops24h 04mMultiple Airlines
Mon 9/2910:42 amSJU - PDX
2 stops27h 29mMultiple Airlines
Deal found 9/9$432
This United Airlines deal was found by Cheapflights users on 9/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/125:00 amPDX - SJU
1 stop9h 25mUnited Airlines
Tue 11/182:05 amSJU - PDX
2 stops15h 42mUnited Airlines
Deal found 9/9$448
This United Airlines deal was found by Cheapflights users on 9/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/85:00 amPDX - SJU
1 stop9h 30mUnited Airlines
Tue 10/141:05 amSJU - PDX
2 stops14h 37mUnited Airlines
Deal found 9/10$451
This American Airlines deal was found by Cheapflights users on 9/11. 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.
Tue 12/210:15 pmPDX - SJU
1 stop18h 42mAmerican Airlines
Thu 12/117:00 amSJU - PDX
1 stop18h 21mAmerican Airlines
Deal found 9/11$457
This United Airlines deal was found by Cheapflights users on 9/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/115:15 pmPDX - SJU
2 stops15h 45mUnited Airlines
Sat 10/181:30 pmSJU - PDX
1 stop10h 56mUnited Airlines
Deal found 9/9$462

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 September 11, 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

Fri 11/14

11:12 pm-2:40 pm

1 stop11h 28m

San Juan Luis Munoz Marin Intl

Tue 11/18

8:10 am-6:36 pm

2 stops14h 26m

$419

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

Sat 11/8

12:35 am-5:20 pm

2 stops12h 45m

San Juan Luis Munoz Marin Intl

Thu 11/13

3:20 pm-11:58 pm

2 stops12h 38m

$419

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

Sat 10/11

10:32 pm-12:00 pm

1 stop10h 28m

San Juan Luis Munoz Marin Intl

Fri 10/17

1:05 am-11:41 am

2 stops13h 36m

$419

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

Sun 11/9

5:26 pm-2:10 pm

2 stops16h 44m

San Juan Luis Munoz Marin Intl

Fri 11/14

3:20 pm-10:05 pm

1 stop10h 45m

$419

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

Tue 12/2

10:15 pm-8:57 pm

1 stop18h 42m

San Juan Luis Munoz Marin Intl

Thu 12/11

7:00 am-9:21 pm

1 stop18h 21m

$457

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

Wed 12/3

6:15 am-11:20 pm

2 stops13h 05m

San Juan Luis Munoz Marin Intl

Tue 12/9

8:55 am-7:20 pm

2 stops14h 25m

$457

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

Fri 10/17

7:59 pm-2:11 pm

2 stops15h 12m

San Juan Luis Munoz Marin Intl

Wed 11/26

3:20 pm-10:05 pm

1 stop10h 45m

$457

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

Tue 9/16

7:15 am-11:47 pm

1 stop13h 32m

San Juan Luis Munoz Marin Intl

Wed 10/1

1:32 pm-11:52 pm

2 stops13h 20m

$482

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

Wed 10/1

12:07 pm-1:43 pm

2 stops22h 36m

$173

PortlandSan Juan

PDX - SJU

PDXSJU

Portland

Mon 11/10

3:26 pm-5:54 pm

2 stops46h 28m

$184

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Showing 1-10 of 19 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 August 29, 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 September 11, 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 September 11, 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
4,248 reviews

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Crew

8.6

Overall

8.0

Food

7.0

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
4,248 reviews
Southwest
8.0
Very good
4,248 reviews

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Crew

8.6

Overall

8.0

Food

7.0

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
8.0
Very good
7,960 reviews
Southwest
8.0
Very good
4,248 reviews

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Crew

8.6

Overall

8.0

Food

7.0

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
8,937 reviews
Southwest
8.0
Very good
4,248 reviews

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Crew

8.6

Overall

8.0

Food

7.0

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
10,000 reviews
Southwest
8.0
Very good
4,248 reviews

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Crew

8.6

Overall

8.0

Food

7.0

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
8,023 reviews
Southwest
8.0
Very good
4,248 reviews

Entertainment

7.5

Boarding

8.1

Comfort

8.0

Crew

8.6

Overall

8.0

Food

7.0

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 28m. 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.

  • 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 Kaseya Center. Travelers on a layover in Miami can visit Wynwood Art District, Bayfront Park, and Kaseya Center, by traveling 5.5 mi, 6.4 mi, and 6.2 mi, respectively after landing at Miami. Travelers in need of a car in Miami can rent one for about $26 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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$185Average$540FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$248Average$415FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$342Average$580FlexibilityNo cancel feeOn-time71%
DeltaCheapest$369Average$552FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$396Average$596FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$450Average$636FlexibilityNo cancel feeOn-time63%

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