$595 Cheap Flights from Porto (OPO) to Portland (PWM)

View $595 flight on Mon, May 25, 2026Opens in a new window

Popular airlines from Porto Airport (OPO) to Portland Intl. Jetport Airport (PWM)

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Cheap Flights from Porto to Portland (OPO-PWM)

Prices were available within the past 7 days and start at $595 for one-way flights and $973 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Austrian Airlines
Mon, Jun 1 - Wed, Jun 10
OPO
Porto
PWM
Portland
$973 Roundtrip, found 6 days ago
$973
Roundtrip
found 6 days ago
Select Austrian Airlines flight, departing Mon, Jun 1 from Porto to Portland, returning Wed, Jun 10, priced at $973 found 6 days ago
Austrian Airlines
Mon, Jun 1 - Wed, Jun 10
OPO
Porto
PWM
Portland
$1,060 Roundtrip, found 6 days ago
$1,060
Roundtrip
found 6 days ago
Select Austrian Airlines flight, departing Mon, Jun 1 from Porto to Portland, returning Wed, Jun 10, priced at $1,060 found 6 days ago
Iberia
Mon, Jun 1 - Wed, Jun 10
OPO
Porto
PWM
Portland
$1,191 Roundtrip, found 6 days ago
$1,191
Roundtrip
found 6 days ago
Select Iberia flight, departing Mon, Jun 1 from Porto to Portland, returning Wed, Jun 10, priced at $1,191 found 6 days ago
Iberia
Mon, Jun 1 - Wed, Jun 10
OPO
Porto
PWM
Portland
$1,195 Roundtrip, found 6 days ago
$1,195
Roundtrip
found 6 days ago
Select Iberia flight, departing Mon, Jun 1 from Porto to Portland, returning Wed, Jun 10, priced at $1,195 found 6 days ago
Iberia
Mon, Jun 1 - Wed, Jun 10
OPO
Porto
PWM
Portland
$1,213 Roundtrip, found 6 days ago
$1,213
Roundtrip
found 6 days ago
Select Iberia flight, departing Mon, Jun 1 from Porto to Portland, returning Wed, Jun 10, priced at $1,213 found 6 days ago
Iberia
Mon, Jun 1 - Wed, Jun 10
OPO
Porto
PWM
Portland
$1,220 Roundtrip, found 6 days ago
$1,220
Roundtrip
found 6 days ago
Select Iberia flight, departing Mon, Jun 1 from Porto to Portland, returning Wed, Jun 10, priced at $1,220 found 6 days ago
Iberia
Mon, Jun 1 - Wed, Jun 10
OPO
Porto
PWM
Portland
$1,224 Roundtrip, found 6 days ago
$1,224
Roundtrip
found 6 days ago
Select Iberia flight, departing Mon, Jun 1 from Porto to Portland, returning Wed, Jun 10, priced at $1,224 found 6 days ago
Iberia
Mon, Jun 1 - Wed, Jun 10
OPO
Porto
PWM
Portland
$1,231 Roundtrip, found 6 days ago
$1,231
Roundtrip
found 6 days ago
Select Iberia flight, departing Mon, Jun 1 from Porto to Portland, returning Wed, Jun 10, priced at $1,231 found 6 days ago
Iberia
Mon, Jun 1 - Wed, Jun 10
OPO
Porto
PWM
Portland
$1,231 Roundtrip, found 6 days ago
$1,231
Roundtrip
found 6 days ago
Select Iberia flight, departing Mon, Jun 1 from Porto to Portland, returning Wed, Jun 10, priced at $1,231 found 6 days ago
Turkish Airlines
Mon, Jun 1 - Wed, Jun 10
OPO
Porto
PWM
Portland
$1,475 Roundtrip, found 6 days ago
$1,475
Roundtrip
found 6 days ago
Select Turkish Airlines flight, departing Mon, Jun 1 from Porto to Portland, returning Wed, Jun 10, priced at $1,475 found 6 days ago

Frequently asked questions

How much does a flight from Dr. Francisco de Sa Carneiro Airport (OPO) to Portland Intl. Jetport Airport (PWM) cost?
Lock in a cheap one-way flight from $595 or cheap return flight from $973 from Dr. Francisco de Sa Carneiro Airport (OPO) to Portland Intl. Jetport Airport (PWM) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Dr. Francisco de Sa Carneiro Airport (OPO) to Portland Intl. Jetport Airport (PWM)?
June is the most affordable month to fly from OPO to PWM. Traveling during quieter months is often the key to better flight prices.
What is the cheapest airline that flies from Dr. Francisco de Sa Carneiro Airport (OPO) to Portland Intl. Jetport Airport (PWM)?
Expedia's filter tool lets you easily compare different airlines, departure times and fares all in one place. Tailor the search to your trip, then sort by "Price (lowest to highest)" to see which carrier offers the cheapest OPO to PWM flight.
How many flights per day from Dr. Francisco de Sa Carneiro Airport (OPO) to Portland Intl. Jetport Airport (PWM)?
Nonstop flights from Dr. Francisco de Sa Carneiro Airport (OPO) to Portland Intl. Jetport Airport (PWM) aren't available daily, so you'll have to take a flight with a layover. Explore your options with Expedia's filter tool. Enter your travel details and click on either "1 Stop" or "2+ Stops."
What day of the week has the most flights from OPO to PWM?
Friday is typically the busiest day for flights, while Tuesday is often the quietest.* Keep in mind that flight schedules can change based on various factors, including the season and airline.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Dr. Francisco de Sa Carneiro Airport (OPO) to Portland Intl. Jetport Airport (PWM)?
Select a flight from Dr. Francisco de Sa Carneiro Airport (OPO) to Portland Intl. Jetport Airport (PWM) that leaves before 3 PM to reduce the risk of delays and cancellations. Departures after this hour are on average 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Dr. Francisco de Sa Carneiro Airport (OPO) to Portland Intl. Jetport Airport (PWM) last-minute?
Waiting until just before your departure to book a ticket from OPO to PWM generally means paying more. While you may find some last-minute offers, there's no guarantee. Allow some flexibility in your schedule to boost your chances of snagging a bargain.
Is it cheaper to book an OPO to PWM flight and hotel package?
Compared with arranging flights and hotels separately, booking an OPO to PWM flight and hotel package with Expedia could lead to significant savings. What's more, having it all in one place will take the stress out of travel planning. Simply pick your flights and choose from our wide range of stays, then personalize your trip with other add-ons like tours, activities and car rentals.
Can I cancel or change the date of my flight from Dr. Francisco de Sa Carneiro Airport (OPO) to Portland Intl. Jetport Airport (PWM)?
It's usually possible to reschedule or cancel your OPO to PWM flight. However, if it's been more than 24 hours since booking, additional fees may apply. Check your airline's policies in your itinerary to see what changes are allowed and if any costs are involved. You'll also find further details on our Customer Service portal.

Travel information

Origin airport
Dr. Francisco de Sa Carneiro
Destination airport
Portland Intl. Jetport
Roundtrip price
$972
Distance
3073 mi

Book with confidence

Porto to Portland Flights

The cheapest times to fly from Porto to Portland

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Porto to Portland are during the month of June. You can find some of the cheapest flights from Porto to Portland with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Porto to Portland

Sunday is one of the best days to book for cheap flights from Porto to Portland: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Porto to Portland

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Porto to Portland in 2025. You can also book with separate airlines for your outbound and return journeys, from $595 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Porto to Portland flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Porto to Portland airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Porto to Portland Flights

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*Available to One Key members.