$448 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 10/1. 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
Lisbon1 stop$780
Porto
Porto1 stop$989
Ponta Delgada
Ponta Delgada2 stops$1,113
Lisbon
Lisbon1 stop$780
Porto
Porto1 stop$989
Ponta Delgada
Ponta Delgada2 stops$1,113

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

Sun, Nov 1 - Thu, Nov 5
United Airlines Logo
6:00 am - 8:10 am
PWM
-
LIS
21h 10m
1 stop
United Airlines Logo
1:00 pm - 9:27 pm
LIS
-
PWM
37h 27m
2 stops
$780United Airlines
Sun, Nov 1 - Thu, Nov 5
United Airlines Logo
6:00 am - 8:10 am
PWM
-
LIS
21h 10m
1 stop
United Airlines Logo
5:00 am - 6:13 pm
LIS
-
PWM
18h 13m
2 stops
$783United Airlines
Sun, Nov 1 - Thu, Nov 5
United Airlines Logo
6:00 am - 8:10 am
PWM
-
LIS
21h 10m
1 stop
United Airlines Logo
10:15 am - 4:09 pm
LIS
-
PWM
10h 54m
1 stop
$796United Airlines
Sat, Nov 7 - Sat, Nov 14
Delta Logo
2:35 pm - 8:00 am
PWM
-
LIS
12h 25m
1 stop
Delta Logo
5:00 am - 11:49 pm
LIS
-
PWM
23h 49m
2 stops
$827Delta
Sat, Nov 7 - Sat, Nov 14
Delta Logo
2:35 pm - 8:00 am
PWM
-
LIS
12h 25m
1 stop
Delta Logo
10:00 am - 11:49 pm
LIS
-
PWM
18h 49m
1 stop
$838Delta
Tue, Aug 18 - Sat, Sep 5
Multiple Airlines Logo
6:00 am - 3:45 pm
PWM
-
LIS
28h 45m
2 stops
Multiple Airlines Logo
7:00 am - 12:59 am
LIS
-
PWM
22h 59m
2 stops
$892Multiple Airlines
Sat, Nov 7 - Sat, Nov 14
Multiple Airlines Logo
11:17 am - 11:00 am
PWM
-
LIS
18h 43m
3 stops
Multiple Airlines Logo
11:20 am - 10:57 pm
LIS
-
PWM
16h 37m
2 stops
$905Multiple Airlines
Sun, Nov 1 - Thu, Nov 5
United Airlines Logo
5:30 am - 8:10 am
PWM
-
LIS
21h 40m
2 stops
United Airlines Logo
5:00 am - 10:57 pm
LIS
-
PWM
22h 57m
2 stops
$928United Airlines
Thu, Aug 20 - Fri, Aug 28
United Airlines Logo
7:35 pm - 10:30 am
PWM
-
LIS
9h 55m
1 stop
United Airlines Logo
11:25 am - 11:32 pm
LIS
-
PWM
41h 07m
2 stops
$936United Airlines
Tue, Jun 30 - Tue, Jul 7
Lufthansa Logo
6:00 am - 8:20 am
PWM
-
PDL
22h 20m
2 stops
Lufthansa Logo
11:00 am - 6:29 pm
PDL
-
PWM
11h 29m
1 stop
$1,113Lufthansa
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.

Find deals

Good to know

Low seasonFebruary
Cheapest flight$448
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 9778 reviews
7.7Boarding
8.1Crew
6.6Food
7.1Entertainment
7.3Comfort
Airline reviews

Boarded early; and arrived home 40 mins early. After a long flight, it’s nice to be back home early. These flights have no amenities; no snacks. So need to bring your own

10.0 ExcellentJanice, Jun 2026
ORD - ILM
Read more United Airlines reviews

Boarded early; and arrived home 40 mins early. After a long flight, it’s nice to be back home early. These flights have no amenities; no snacks. So need to bring your own

Boarded early, left early, arrived 40 mins early! A win win for me!

New plane was lovely. Crew customer service is always lax but expected. Kraft on time and arrived safely.

These airplanes should be illegal. The seats are two tight, it is a safety issue. Wheelchair support was ridiculously slow. We almost missed our flight.

It was a short flight so I was expecting too much

Horrifying Almost 2 million miles. Bring your own food and drink. One coffee or drink every three hours. Have to order meals on app more than 24 hours ahead Tiny and dirty bathrooms

Flight was delayed but more than 90 minutes. This caused me to miss my available windows for pick-up by a friend. I had to pay $125 for an uber back home from the airport which was an added expense that I had not budgeted for my trip. Staff was friendly.

I felt scammed. The priced advertised was different than what I paid. I paid the whole some online. I then got a call 20 minutes later saying I need to paid 70 more person. She said the price online is not the guaranteed price.

Seat pitch is horrible especially on the 15 hour flight. Gate crew at SFO was Outstanding. The flight crew was also great.

Easy of boarding, helpfully staff at check in, surprisingly comfortable seating

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

Information on your arrival and departure airports

Portland (PWM)