Cheap Flights from Portland Airport to San Juan from $347 Roundtrip

Flight deals from Portland Airport to San Juan

Looking for cheap flights from Portland Airport to San Juan, or a last-minute trip? Find the cheapest prices on one-way and round-trip flights right here.

San Juan.$347 per passenger.Departing Fri, Feb 27, returning Fri, Mar 6.Round-trip flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departing from Portland on Fri, Feb 27, arriving in San Juan Luis Munoz Marin.Inbound indirect flight with Frontier Airlines, departing from San Juan Luis Munoz Marin on Fri, Mar 6, arriving in Portland.Price includes taxes and charges.From $347, select.

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Flying from Portland Airport to San Juan

Arm yourself with these facts on the fly.

Cheapest flight found	$347
Cheapest month to fly	February

How to find cheap flights from Portland Airport to San Juan

We've compared the best online travel agents and flight providers on the internet to find the cheapest plane tickets from Portland Airport to San Juan. Other savvy travelers recently found round-trip flights from $347 and one-way tickets from $165. Ready to join them? Here are a few tips to help you do it the smart way.

Fly in February

The cheapest time to fly from Portland Airport to San Juan is currently February.

Flex your dates for the best rates

If you’re flexible on your departure dates, you can use Skyscanner's whole month tool to find the cheapest day of the year to fly from Portland Airport to anywhere you choose in San Juan.

Watch as flight prices go up and down

With Price Alerts, we'll let you know when flight prices from Portland Airport to your chosen airport in San Juan go up or down so you can book when the time is just right.

Relax – these are fee-free plane tickets

With us, there are no added fees – the San Juan Airport to San Juan flight price you see when you search with us is what you pay to the provider.

Frequently asked questions

What is the average price of a flight from Portland Airport to San Juan?

We looked at all of the upcoming round-trip flights from Portland Airport to San Juan we could find over the next 12 months. It looks like $347 is the best price. This is good, compared to the average San Juan ticket price of $347.

What is the cheapest month to fly from Portland Airport to San Juan?

The cheapest month to fly from Portland Airport to San Juan is currently February.

On which upcoming date is it cheapest to fly from Portland Airport to San Juan?

After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Portland Airport to San Juan on Friday, February 27, 2026.

If I'm flying from Portland Airport, where in San Juan is cheapest to fly to?

If you're flying from Portland, the cheapest city in San Juan to fly into is San Juan. The cheapest airport serving San Juan at the moment is San Juan Luis Munoz Marin.