OPO - PDX

Find cheap flights from Porto to Portland

1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Portland

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Porto to Portland, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Porto to Portland, as well as popular online travel agencies
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Flight Deals

Cheap Flights from Porto to Portland (OPO-PDX)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Porto to Portland that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Porto to Portland

Multiple Airlines Logo
OPO-PDX
5183 mimulti-stop
Multiple Airlines Logo
PDX-OPO
5183 mimulti-stop
Multiple Airlines
Find Deal

Everything you should know

Cheapest round-trip
Multiple Airlines
Thu 9/4
OPO - PDX • multi-stop
Cheapest one-way
Multiple Airlines
Thu 9/4
OPO - PDX • multi-stop
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Portland!
Booking Insights

KAYAK's insights & trends for Porto to Portland flights

Get data-powered insights and trends into flights from Porto to Portland to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Porto to Portland?

The average price of all round-trip flights from Porto to Portland clicked on KAYAK for each day over the last 12 months.

When flying from Porto to Portland, you should consider leaving on a Friday and avoid Wednesdays if you are looking for the best rates. For your return to Porto, you’ll find the best rates on Mondays and the most expensive ones on Wednesdays.

Good to know

Low seasonApril
Best time to beat the crowds with an average 25% drop in price.
Most popular time to fly and prices are also 20% lower on average.

When to book flights from Porto to Portland

Are your dates flexible? Find out the best times to travel from Porto to Portland based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Porto to Portland

  • Do I need a passport to fly between Porto and Portland?

    Yes

  • Which aircraft models fly most regularly from Porto to Portland?

    We unfortunately don’t have that data for this specific route.

  • How does KAYAK find such low prices on flights from Porto to Portland?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Porto to Portland.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Porto to Portland?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Portland from Porto is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Porto to Portland?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Portland with an airline and back to Porto with another airline. Booking your flights between Porto and PDX can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Porto to Portland?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Portland from Porto up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Porto to Portland

 
See real verified KAYAK customer reviews for airlines flying from Porto to Portland. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Porto to Portland? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
DeltaOverall score based on 7977 reviews
7.9Entertainment
7.9Comfort
7.3Food
8.2Boarding
8.5Crew
Airline reviews

Crew was good. The reservation got mixed up and they didn't have my TSA number. I am also a Silver Medallion and wasn't able to use Sky Priority.

8.0 ExcellentG, Sep 2025ATL - LAS
Read more Delta reviews

Crew was good. The reservation got mixed up and they didn't have my TSA number. I am also a Silver Medallion and wasn't able to use Sky Priority.

The airport crew helped a lot, what I didn’t like? We were not informed that we needed to pick our luggage’s, if the crew at the luggage center didn’t tell me I would have been home without my belongings, I was heading out to my next connecting flight while looking for what gate to go to, I asked one of the crews for help, he told me and he also told me to not forget to grab my luggage’s which was chocking, because on my way out the country that wasn’t required, I just hope none of your customers lost their luggage’s because of this.

Delta made it easy, comfortable and timely. The crew was fantastic.

This route with Delta always has delays or is cancelled. Aircrafts seem smaller and older. I fly Delta quite a bit - haven’t had issues with the international flights. But this route has always been the troublesome one

The flight crew was friendly. I tried to adjust my seat online ahead of time but no option existed without additional fees. My friend asked at the gate about a seat change and was able to make it happen. That was great! The flight crew moved a very tall gentleman and his companion which allowed us to have more space which was nice. Overall, good experience. Appreciated the blanket and pillow.

Three seats in first class were broken and while they were able to still acommodate us it was looking very touch and go and they had others they could not acommodate

Mechanic delay in addition to a 2 hour change in takeoff time was frustrating.

Delayed due to thunderstorms and no in-flight service due to rough weather — both of which are out of Delta’s control. Flight was good overall.

The flight attendants in SLC were rude. I arrived 40 minutes early to gate. Ticket said I needed check in for seat assignments and tried check in and attendants said they weren’t doing it. And proceeded to never call me to give me a ticket so when time to board I received the very last seat. Please relay to employees to do their job better..,

On this flight I felt the food offering was not as complete as on previous flights. The tomato salad was a bit off and there was nothing additional such a bread or butter. The breakfast was only one option, so you either ate what they had or ate nothing. The crew was efficient, but most seemed frustrated throughout the flight. The flight arrived early and was obstacle-free, so I’m overall quite happy, but the shine in the rest of the experience just wasn’t there.

Everything you need to know for your flight from Porto to Portland

Information on your arrival and departure airports

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