Cheap flights from Portland to San Juan

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Flight deals from Portland to San Juan

Looking for a cheap last-minute deal or the best round-trip flight from Portland to San Juan? Find the lowest prices on one-way and round-trip tickets right here.

Find the cheapest month to fly from Portland to San Juan

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Portland to San Juan flights are currently cheapest in April.

Alternative Portland to San Juan routes

Looking for the cheapest, fastest or easiest route from Portland to San Juan? You could fly into the following airports instead.

Portland to San Juan: Flight information

The things to know before you go.
Cheapest flight foundC$521
Cheapest month to flySeptember

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

There are 6 airports in San Juan: San Juan Isla Grande, San Juan Luis Munoz Marin, Roosevelt Roads, Ponce, Vieques, and Culebra.
The best price we found for a round-trip flight from Portland to San Juan is C$521. 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. But we found flights with one or more stops from C$521.
There are no flights flying from Portland to San Juan, as of May 2025.
The cheapest month to fly from Portland to San Juan is usually May 2025.
If you're flying from Portland Airport, the cheapest airport near San Juan is San Juan Luis Munoz Marin – which is 11.3 km away from the center of San Juan. We've found flights to this airport from C$521.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Portland Airport to San Juan on Monday, September 29, 2025.
No airlines currently offer direct flights between Portland Airport and San Juan. 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 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.
In May, the average temperature is usually around 27°C. August is typically the warmest month in San Juan, when it usually averages around 29°C. You can expect the least rain in February. The coldest month is January, with temperatures averaging 23°C. The rainiest month is September.
Currently, United offers the cheapest flight tickets to San Juan.

Flying from Portland International Airport (PDX) to San Juan: what you need to know

  • The timezone in San Juan is UTC-4. The city is three hours ahead of Portland, where Portland International Airport is located.

  • For hassle-free travel, turn up at the airport two hours ahead of international flights and one hour before domestic departures. This leaves you with plenty of time to board your PDX to San Juan flight.

  • If you're flying during a major holiday or another peak period, allow for even more time. A good rule is two hours ahead of domestic flights and up to four hours before international departures. Security and check-in lines will be longer.

  • A stopover is the perfect opportunity to break up your journey and maybe even tick off a new city. When browsing for flight tickets from PDX to San Juan, uncheck the 'Direct flights only' box to see where you can stop along the way. Here are some popular options to consider:

    • Dallas/Fort Worth International Airport (DFW)

    • Denver International Airport (DEN)

    • Washington Dulles International Airport (IAD)

  • Located around 10 kilometres from central Portland, PDX can be reached in about 20 minutes by car. Travelling on public transport takes roughly 45 minutes.

  • Have an early flight from Portland International Airport to San Juan? Avoid the hassle of rushing to the terminal (and get some extra shut-eye) by choosing one of these stays close to PDX:

  • Portland International Airport maintains a solid on-time performance, reducing the likelihood of delays. Departures from PDX touch down on schedule 83.65% of the time.

  • PDX is located at 7000 NE Airport Way.

How to find the cheapest flights from Portland International Airport (PDX) to San Juan

  • C$241 is the cheapest price we've found for a one-way Portland International Airport to San Juan flight. A return flight ticket right now is C$521. Depending on when you book and the availability, these fares could change.

  • To find cheap flights from PDX to San Juan, book as early as you can. Airlines usually offer lower fares when flights first go on sale.

  • The 'Whole month' search tool will show you the cheapest tickets from Portland International Airport to San Juan across the month. It's a great way to snap up a bargain if your dates aren't set in stone.

  • There's no need to check in daily to see if fares have dropped when you set up a Price Alert. We'll update you as soon as there's an updated deal for cheap flights from PDX to San Juan.

  • Choose your preferred departure and arrival times, airlines and number of stops with our filters. Then, sort the results for your flight from Portland International Airport to San Juan by 'Cheapest,' 'Best' or 'Fastest.'

Airports in San Juan

Luis Munoz Marin International Airport (SJU)

  • Luis Munoz Marin International Airport (SJU) to the centre of San Juan takes around 10 minutes to reach by car. The centre is roughly 8 kilometres away.

  • Getting there by public transport will take you around 55 minutes.

  • Look into staying at a hotel close to SJU if you have a late flight from Portland International Airport to San Juan. Select one of these accommodation options and skip the long transfer:

  • Grab a Luis Munoz Marin International Airport rental car and discover San Juan and beyond with your own wheels. Sixt, Ace Rent a Car and U-Save are top providers you can book with here.

  • Secure the lowest price by reserving your vehicle from Luis Munoz Marin International Airport about two weeks ahead of your flight from PDX to San Juan.

Fernando Luis Ribas Dominicci Airport (SIG)

  • Central San Juan is about 8 kilometres from Fernando Luis Ribas Dominicci Airport (SIG). After your flight from Portland International Airport to San Juan has touched down and you've navigated your way to arrivals, expect a drive of about 15 minutes.

  • The trip will take about 1 hour on public transport.

  • You'll find some comfortable places to drop your things at near SIG. Settle in and get cozy after your PDX to San Juan flight at one of these perfectly located options:

Best time to go to San Juan

  • Carefully consider your trip dates before securing your flight from Portland International Airport to San Juan. The city comes alive during high season, but hotel prices are typically higher and attractions can get busy. Plan your trip to San Juan in the low season for a more relaxed vibe.

  • Lock in a Portland International Airport to San Juan flight ticket with a departure in September if you're eager to explore the city during its warmest month. Expect temperatures to range from 23ºC (73ºF) to 33ºC (91ºF).

  • February has average temperatures of between 20ºC (68ºF) and 28ºC (82ºF). Search for a cheap ticket from PDX to San Juan around that time if you want to travel when it's cooler.

More about San Juan

  • Once you've booked your flight from Portland International Airport to San Juan, find a hotel that offers the right mix of comfort and location. Make one of these accommodation options your base for exploring San Juan:

  • La Garita del morro de san juan bahia and Castillo San Felipe del Morro are just two of the popular attractions to add to your San Juan to-do list. Continue your sightseeing adventures at Fortaleza Street.

Explore more of Puerto Rico

  • San Juan will leave a lasting impression, but there are so many other parts of Puerto Rico you'll want to see. Around 113 kilometres west of San Juan, a trip to Aguadilla will keep your itinerary packed. Start with popular sights like El Parterre, Aguadilla Ice Skating Arena and Bandera de los Reyes Magos.

  • If you're looking to explore another corner of Puerto Rico, head for Isabela, roughly 105 kilometres west of San Juan. Amarillo Mango, Urb. Llanos Piscina Park and Noches de Artesania are highlights.

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