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

Compare Portland to San Juan Luis Munoz Marin flight deals

Find the cheapest month or even day of the year to fly to San Juan Luis Munoz Marin

Book the best San Juan Luis Munoz Marin fare with no extra fees

Flight deals from Portland to San Juan Luis Munoz Marin

Looking for a cheap last-minute deal or the best return flight from Portland to San Juan Luis Munoz Marin? Find the lowest prices on one-way and return tickets right here.
San Juan.$617 per passenger.Departing Mon, 8 Dec, returning Sat, 13 Dec.Return flight with United.Outbound indirect flight with United, departs from Portland on Mon, 8 Dec, arriving in San Juan Luis Munoz Marin.Inbound indirect flight with United, departs from San Juan Luis Munoz Marin on Sat, 13 Dec, arriving in Portland.Price includes taxes and charges.From $617, select.
San Juan.$619 per passenger.Departing Tue, 23 Sep, returning Sat, 27 Sep.Return flight with Delta.Outbound indirect flight with Delta, departs from Portland on Tue, 23 Sep, arriving in San Juan Luis Munoz Marin.Inbound indirect flight with Delta, departs from San Juan Luis Munoz Marin on Sat, 27 Sep, arriving in Portland.Price includes taxes and charges.From $619, select.
San Juan.$625 per passenger.Departing Tue, 7 Oct, returning Fri, 17 Oct.Return flight with Delta.Outbound indirect flight with Delta, departs from Portland on Tue, 7 Oct, arriving in San Juan Luis Munoz Marin.Inbound indirect flight with Delta, departs from San Juan Luis Munoz Marin on Fri, 17 Oct, arriving in Portland.Price includes taxes and charges.From $625, select.
San Juan.$639 per passenger.Departing Tue, 13 Jan, returning Tue, 20 Jan.Return flight with Delta.Outbound indirect flight with Delta, departs from Portland on Tue, 13 Jan, arriving in San Juan Luis Munoz Marin.Inbound indirect flight with Delta, departs from San Juan Luis Munoz Marin on Tue, 20 Jan, arriving in Portland.Price includes taxes and charges.From $639, select.
San Juan.$715 per passenger.Departing Tue, 19 Aug, returning Thu, 28 Aug.Return flight with United.Outbound indirect flight with United, departs from Portland on Tue, 19 Aug, arriving in San Juan Luis Munoz Marin.Inbound indirect flight with United, departs from San Juan Luis Munoz Marin on Thu, 28 Aug, arriving in Portland.Price includes taxes and charges.From $715, select.
San Juan.$858 per passenger.Departing Fri, 28 Nov, returning Wed, 3 Dec.Return flight with United.Outbound indirect flight with United, departs from Portland on Fri, 28 Nov, arriving in San Juan Luis Munoz Marin.Inbound indirect flight with United, departs from San Juan Luis Munoz Marin on Wed, 3 Dec, arriving in Portland.Price includes taxes and charges.From $858, select.
San Juan.$869 per passenger.Departing Fri, 23 Jan, returning Sun, 1 Feb.Return flight with Delta.Outbound indirect flight with Delta, departs from Portland on Fri, 23 Jan, arriving in San Juan Luis Munoz Marin.Inbound indirect flight with Delta, departs from San Juan Luis Munoz Marin on Sun, 1 Feb, arriving in Portland.Price includes taxes and charges.From $869, select.
San Juan.$883 per passenger.Departing Fri, 29 Aug, returning Sun, 7 Sep.Return flight with United.Outbound indirect flight with United, departs from Portland on Fri, 29 Aug, arriving in San Juan Luis Munoz Marin.Inbound indirect flight with United, departs from San Juan Luis Munoz Marin on Sun, 7 Sep, arriving in Portland.Price includes taxes and charges.From $883, select.

Find the cheapest month to fly from Portland to San Juan Luis Munoz Marin

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Portland to San Juan Luis Munoz Marin flights are currently cheapest in December.
Aug
from $715
Sep
from $619
Oct
from $625
Nov
from $1,377
Dec
from $617
Jan
from $639
Feb
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Mar
from $1,049
Apr
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May
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Jun
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Jul
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Portland to San Juan Luis Munoz Marin: Alternative routes

Compare routes from Portland to San Juan below. You may find an airport to fly into that's cheaper, faster, or easier than San Juan Luis Munoz Marin.

Portland to San Juan: Flight information

The things to know before you go.
Cheapest flight found$617
Cheapest month to flyDecember

Finding cheap flights from Portland to San Juan Luis Munoz Marin: Frequently asked questions

The best price we found for a return flight from Portland to San Juan Luis Munoz Marin is $617. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from Portland to San Juan Luis Munoz Marin. But we found flights with one or more stops from $617.
As of August 2025, there are no flights flying from Portland to San Juan Luis Munoz Marin.
The cheapest month to fly from Portland to San Juan Luis Munoz Marin is usually December.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Portland Airport to San Juan Luis Munoz Marin Airport on Monday, 8 December 2025.
No airlines currently offer direct flights between Portland Airport and San Juan Luis Munoz Marin Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to San Juan Luis Munoz Marin but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to San Juan is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, United offers the cheapest flight tickets to San Juan Luis Munoz Marin.

Travelling from Portland International Airport (PDX) to Luis Munoz Marin International Airport (SJU): what you need to know

  • San Juan's timezone is UTC-4, which makes San Juan three hours ahead of Portland.

  • For a smooth journey, arrive at the airport two hours ahead of international flights and an hour before domestic departures. This will give you plenty of time to catch your PDX to SJU flight.

  • Travelling during a peak time such as July? School holidays and other high seasons can mean longer queues and delays at check-in and security. Play it safe and arrive up to four hours before international flights and two hours before domestic departures.

  • Think about adding a stopover when booking your ticket from Portland International Airport to Luis Munoz Marin International Airport. Simply uncheck 'Direct flights only' to break up your trip, or perhaps explore a new destination along the way. Check out these options between PDX and SJU:

    • Denver International Airport

    • Washington Dulles International Airport

    • Dallas/Fort Worth International Airport

How to find the cheapest flights from Portland International Airport (PDX) to Luis Munoz Marin International Airport (SJU)

  • $256 is the lowest price for a one-way Portland International Airport to Luis Munoz Marin International Airport flight. Return flights start at $617. These prices can change based on availability.

  • Don't wait until the last minute. You're more likely to get cheap tickets from PDX to SJU if you book in advance. Airlines often offer some great early bird discounts.

  • Finding cheap flights from Portland International Airport to Luis Munoz Marin International Airport is easy if you can be flexible with your travel dates. Use the 'Whole month' function to see the lowest prices across the month and score a great deal.

  • Save time searching for cheap flights from PDX to SJU by setting up a Price Alert. You'll get an email or notification through the app when a new discounted fare appears.

  • Tailor your flights with filters. Pick your departure and arrival times, airlines and total journey duration. You can also sort the results by 'Best,' 'Fastest' or 'Cheapest' flights from Portland International Airport to Luis Munoz Marin International Airport.

Handy information about Portland International Airport (PDX)

  • PDX is located at 7000 NE Airport Way.

  • Portland International Airport maintains a solid on-time record, so flight disruptions are less likely. Departures from PDX arrive at their destination as scheduled 83.65% of the time.

  • To get to Portland International Airport from central Portland, it'll take about 20 minutes if you're planning to drive. Of course, this depends on traffic conditions. It's approximately 19 kilometres from the airport to the city centre.

  • You can expect a trip time of roughly 45 minutes on public transport.

  • Get your break off to a relaxed start by staying near PDX. Whether you're taking an early flight from Portland International Airport to Luis Munoz Marin International Airport or just don't like being rushed, these stays have you covered:

Arriving at Luis Munoz Marin International Airport (SJU)

Getting from Luis Munoz Marin International Airport (SJU) to central San Juan

  • Luis Munoz Marin International Airport to the centre of San Juan has a drive time of about 10 minutes. It's approximately 8 kilometres away.

  • It takes roughly 55 minutes to get there using public transport.

When to fly to Luis Munoz Marin International Airport (SJU)

  • It's time to plan your dates for your flight from Portland International Airport to Luis Munoz Marin International Airport. July is the most popular month to visit San Juan. If you're after a quieter vibe, go in May.

  • Before locking in your flight from Portland International Airport to Luis Munoz Marin International Airport, consider the type of weather you enjoy. September is the warmest month in San Juan, with the temperature ranging from 23ºC (73ºF) to 33ºC (91ºF).

  • Look for cheap tickets from PDX to SJU in February if you want to travel in cooler conditions. Temperatures are at their lowest then, ranging between 20ºC (68ºF) and 28ºC (82ºF) on average.

Explore more of Puerto Rico

  • San Juan has plenty going for it, but there are so many other corners of Puerto Rico waiting to be explored. Around 10 kilometres west of San Juan, a trip to Bayamon will keep you on the move. Start with popular sights like Plazoleta Ignacio Zorrilla, La Plaza de la Bomba Puertorriqueña, Monumento a los Trovadores and Parque Palm Court.

  • Around 11 kilometres east of San Juan, Carolina is another essential stop in Puerto Rico. Get a taste of what this destination has to offer at Isla Verde Beach, Parque de Doble A Roberto Clemente Walker and Drone Zone Track.

Plan the rest of your trip from Portland to San Juan

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.