Cheap flights from Portland to San Juan from $181
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Portland to San Juan departing on 6/29. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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How to get the cheapest flight ticket from Portland to San Juan
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to San Juan?
If you’re not able to fly to San Juan in September, then October is your next best option. Flight prices from Portland to San Juan during October average around $428.
What is the cheapest day to depart on your flight to San Juan?
The cheapest day to depart from Portland to San Juan is on a Tuesday when prices can be found for as low as $454. The most expensive day to fly to San Juan is Thursday, with ticket prices averaging around $655.
What is the cheapest time of day to depart on your flight to San Juan?
The cheapest time of day to fly to San Juan is in the afternoon when flights can be purchased for as low as $428. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $602 on average. Flights to San Juan from Portland in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.
How far in advance should I book a flight to San Juan?
You are more likely to see cheaper flights to San Juan from Portland when booking 11 weeks ahead of your departure date. In general, you can expect to find flights to San Juan for around $549 when searching 11 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Juan from Portland for as low as $431 on momondo.
What is the cheapest airline that flies from Portland to San Juan?
Spirit Airlines, JetBlue, and Delta are the most popular carriers operating from Portland to San Juan
What airlines fly to San Juan?
American Airlines, Delta and United Airlines are the top three most popular airlines that fly to San Juan from Portland according to our data. American Airlines is the first choice among our users, with 48% of people opting to fly with this airline when traveling to San Juan. Keep in mind that there are 7 different airlines that fly to San Juan on a routine basis, so you have a few additional options to choose from.
Cheap Portland to San Juan flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Portland to San Juan
How far is Portland to San Juan by plane?
Portland and San Juan are 3707.1 mi apart from one another. A reasonable flight in good conditions will take 9h 25m.
When did momondo last update prices for flights from Portland Airport to San Juan?
Prices for flights from Portland Airport to San Juan are refreshed on a daily basis.
How many operators does momondo search for flights from Portland Airport to San Juan?
As of June 2025, there are 7 operators available to choose from for flights from Portland Airport to San Juan.
How old do you have to be to fly from Portland Airport to San Juan?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Portland Airport to San Juan.
What documentation or ID do you need to fly to San Juan?
The travel and health documents required for your trip to San Juan can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at San Juan. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
Best airlines flying from Portland to San Juan
Compare and see reviews for airlines that fly from Portland to San Juan with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $185 | Free Cancellation | Rating 7.3 2,922 reviews | |||
| PriceFrom $251 | Free Cancellation | Rating 6.3 8,060 reviews | |||
| PriceFrom $306 | Free Cancellation | Rating 7.4 8,801 reviews | |||
| PriceFrom $328 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $369 | Free Cancellation | Rating 8.0 7,963 reviews | |||
| PriceFrom $450 | Free Cancellation | Rating 8.0 4,278 reviews | |||
| PriceFrom $475 | Free Cancellation | Rating 6.9 345 reviews |
Why use momondo?
Why should I use momondo to find a flight deal from Portland to San Juan?
We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Portland to San Juan for you.
Can I find flights from Portland to San Juan with flexible booking policies on momondo?
Yes. momondo enables you to select and highlight flights to San Juan from Portland with this policy.
How can momondo help me find flights from Portland to San Juan?
momondo provides multiple filters to help you find the best flight to San Juan from Portland. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.
I’m not ready to book a flight from Portland to San Juan right now. Can momondo alert me if prices change?
If you are simply researching potential flights to San Juan, momondo offers a useful price alert feature which will track prices for flights to San Juan from Portland and alert you when they change.