$505 Find Cheap Flights from Portland to Portugal

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Portland to Portugal departing on 6/3. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Cheap Flights from Portland to Portugal

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Lisbon
Lisbon2 stops$916
Porto
Porto1 stop$949
Ponta Delgada
Ponta Delgada2 stops$1,423
Lisbon
Lisbon2 stops$916
Porto
Porto1 stop$949
Ponta Delgada
Ponta Delgada2 stops$1,423

Book Cheap Portland to Portugal Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Portland to Portugal 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 Portland to Portugal

Wed, Aug 26 - Tue, Sep 15
Delta Logo
2:53 pm - 2:55 pm
PWM
-
LIS
19h 02m
2 stops
Delta Logo
5:00 am - 11:59 pm
LIS
-
PWM
23h 59m
2 stops
$916Delta
Wed, Aug 26 - Tue, Sep 15
Multiple Airlines Logo
12:45 pm - 10:45 am
PWM
-
LIS
17h 00m
2 stops
Multiple Airlines Logo
9:20 am - 11:59 pm
LIS
-
PWM
19h 39m
2 stops
$917Multiple Airlines
Wed, Aug 26 - Wed, Sep 16
KLM Logo
6:00 am - 8:00 am
PWM
-
LIS
21h 00m
1 stop
KLM Logo
5:00 am - 11:59 pm
LIS
-
PWM
23h 59m
2 stops
$918KLM
Wed, Aug 26 - Wed, Sep 16
American Airlines Logo
10:56 am - 9:05 am
PWM
-
LIS
17h 09m
1 stop
American Airlines Logo
11:05 am - 11:51 pm
LIS
-
PWM
17h 46m
1 stop
$923American Airlines
Sat, Aug 29 - Fri, Sep 18
Air Canada Logo
6:00 am - 9:20 am
PWM
-
LIS
46h 20m
2 stops
Air Canada Logo
11:25 am - 6:29 pm
LIS
-
PWM
36h 04m
2 stops
$935Air Canada
Tue, Jul 14 - Mon, Jul 20
United Airlines Logo
10:55 am - 6:15 am
PWM
-
OPO
14h 20m
1 stop
United Airlines Logo
12:10 pm - 11:30 pm
OPO
-
PWM
40h 20m
2 stops
$949United Airlines
Tue, Jul 14 - Mon, Jul 20
United Airlines Logo
6:00 am - 6:15 am
PWM
-
OPO
19h 15m
2 stops
United Airlines Logo
12:10 pm - 6:29 pm
OPO
-
PWM
35h 19m
2 stops
$953United Airlines
Sat, Aug 29 - Fri, Sep 18
United Airlines Logo
6:53 pm - 10:30 am
PWM
-
LIS
34h 37m
2 stops
United Airlines Logo
12:20 pm - 11:59 pm
LIS
-
PWM
16h 39m
1 stop
$962United Airlines
Fri, Aug 28 - Thu, Sep 17
Air Canada Logo
6:53 pm - 9:20 am
PWM
-
LIS
57h 27m
2 stops
Air Canada Logo
11:25 am - 9:08 am
LIS
-
PWM
50h 43m
2 stops
$964Air Canada
Tue, Jul 14 - Mon, Jul 20
KLM Logo
2:59 pm - 10:30 am
PWM
-
OPO
14h 31m
1 stop
KLM Logo
12:15 pm - 12:59 am
OPO
-
PWM
17h 44m
1 stop
$1,005KLM
Booking Insights

KAYAK's insights & trends for Portland to Portugal flights

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

What is the cheapest month to fly from Portland to Portugal?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Portland to Portugal, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Portland to Portugal is May, when tickets cost $0 (return) on average. On the other hand, the most expensive months are December and July, when the average cost of round-trip tickets is $1,238 and $1,131 respectively.

Good to know

Low seasonFebruary
Cheapest flight$505
Best time to beat the crowds with an average 45% drop in price.
Most popular time to fly and prices are also 29% lower on average.
Flight from Portland to Lisbon

FAQs - booking Portugal flights

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

    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 Portland to Portugal.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Portland to Portugal 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 Portland to Portugal?

    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 from Portland to Portugal with an airline and back with another airline.

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

    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 from Portland to Portugal 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 Portland to Portugal

 
Need help choosing which airline to fly with from Portland to Portugal? 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.
7.4
United AirlinesOverall score based on 9751 reviews
7.7Boarding
7.3Comfort
6.6Food
7.1Entertainment
8.1Crew
Airline reviews

6 1/2 hours from Tampa to SFO on a Boeing 737. Cramped. No Service. No real food. One pass for coffee at the beginning and a second pass THREE hours later. And check-in in Tampa was nasty even by United standards. And I am at almost TWO million miles on United. It's a non-stop. But terrible service.

2.0 MediocreAnonymous, May 2026
TPA - SFO
Read more United Airlines reviews

6 1/2 hours from Tampa to SFO on a Boeing 737. Cramped. No Service. No real food. One pass for coffee at the beginning and a second pass THREE hours later. And check-in in Tampa was nasty even by United standards. And I am at almost TWO million miles on United. It's a non-stop. But terrible service.

MY FAMILY'S LUGGAGE WAS LOST FROM ROME TO BARI. I WAS THE ONLY ONE THAT RECEIVED MY LUGGAGE FROM ROME TO BARI. AFTER DEPLANING IN BARI, WE WASTED A LOT OF TIME AT BAG CLAIMS LOST AND FOUND REPORTING THE CLAIM AND PLEADING FOR THE BAGS TO BE DELIVERED THE NEXT DAY. WE WERE TOLD THAT IT TAKES 3 DAYS MINIMUM TO DELIVER. MY DAUGHTER AND MY GIRLFRIEND NEEDED THEIR PERSONAL THINGS AND WE WERE STAYING 3 HOURS AWAY FROM THE BARI AIRPORT. WE HAD TO DRIVE 3 HOURS TO THE AIRPORT TO COLLECT OUR LOST LUGGAGE THE NEXT DAY. WE ARE NOT HAPPY WITH THE EXPERIENCE

We had a delay, but thankfully I made it to my connection. Overall it went smooth

The flight had a delay but I made it to my connection. Flight was smooth overall

As I wrote earlier, poor planning and/or communication. At least twice, we were told that we would be boarding in less than ten minutes, only to have the flight again delayed at least another hour.

This flight is a quick way to get to Chicago, but a bit expensive.

Very comfortable seating and the Flight staff were very attentive. The premium economy section that I was seated in was very clean, updated, and well appointed. I would highly recommend flying United Airlines as this experience was better than the Japan Airlines business class that I flew several months ago.

Our flight was canceled same day and we were never informed. Had to pay more and worse seating on another airline.

Our flight to Rome, Italy was cancelled the day of and we were never informed. We only found out because I was trying to get into my husbands account and called to get his account number. Had to pay more for worse seating on another airline.

My service dog and I were asked to deplane just before they closed the door - clearly very last minute they couldn’t find the documentation that I have filled out many many times before that is for flying service animals. I purposely purchase 3seats (a whole row) since he is large and not all passengers want to sit next to a dog on a cross country flight. The plane departed with my husband on it!!! They made me fill out a hard copy of the same form and had to reschedule me on a later flight where they could find 3 seats together!! I’ve done this so many times before - clearly the error was on their part in a technology glitch - but really people - do better!! Very traumatic - and my husband had to wait for us when he landed ….so bad. Poor pup was confused and tired.

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

Information on your arrival and departure airports