$634 Find Cheap Flights from Portland to Portugal

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Portland to Portugal departing on 4/27. 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$634
Porto
Porto2 stops$748
Ponta Delgada
Ponta Delgada1 stop$1,079
Lisbon
Lisbon2 stops$634
Porto
Porto2 stops$748
Ponta Delgada
Ponta Delgada1 stop$1,079

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

Mon, Apr 27 - Mon, May 4
United Airlines Logo
7:33 pm - 11:45 am
PWM
-
LIS
35h 12m
2 stops
United Airlines Logo
5:05 am - 2:14 pm
LIS
-
PWM
38h 09m
2 stops
$634United Airlines
Thu, Apr 30 - Thu, May 7
United Airlines Logo
3:39 pm - 3:25 pm
PWM
-
LIS
18h 46m
2 stops
United Airlines Logo
11:25 am - 9:19 pm
LIS
-
PWM
38h 54m
2 stops
$676United Airlines
Thu, Apr 30 - Thu, May 7
United Airlines Logo
3:39 pm - 3:25 pm
PWM
-
LIS
18h 46m
2 stops
United Airlines Logo
12:20 pm - 10:18 am
LIS
-
PWM
26h 58m
1 stop
$696United Airlines
Sun, Apr 12 - Sun, Apr 19
United Airlines Logo
7:36 pm - 9:20 am
PWM
-
LIS
32h 44m
2 stops
United Airlines Logo
6:45 am - 9:40 pm
LIS
-
PWM
43h 55m
2 stops
$705United Airlines
Mon, Apr 27 - Mon, May 4
Multiple Airlines Logo
2:51 pm - 8:00 am
PWM
-
LIS
12h 09m
1 stop
Multiple Airlines Logo
6:50 pm - 2:11 pm
LIS
-
PWM
24h 21m
2 stops
$734Multiple Airlines
Sun, Apr 12 - Sun, Apr 19
KLM Logo
6:25 am - 8:00 am
PWM
-
LIS
20h 35m
1 stop
KLM Logo
5:00 am - 12:46 am
LIS
-
PWM
24h 46m
2 stops
$743KLM
Fri, May 15 - Sun, Jun 14
Turkish Airlines Logo
6:00 am - 3:40 pm
PWM
-
OPO
28h 40m
2 stops
Turkish Airlines Logo
10:45 am - 11:57 pm
OPO
-
PWM
42h 12m
2 stops
$748Turkish Airlines
Tue, May 12 - Tue, Jun 16
Turkish Airlines Logo
6:00 am - 9:45 am
PWM
-
OPO
22h 45m
2 stops
Turkish Airlines Logo
10:40 am - 1:29 pm
OPO
-
PWM
31h 49m
2 stops
$809Turkish Airlines
Sat, Aug 8 - Sat, Aug 15
Austrian Airlines Logo
10:55 am - 8:40 am
PWM
-
PDL
17h 45m
1 stop
Austrian Airlines Logo
11:00 am - 11:31 pm
PDL
-
PWM
16h 31m
1 stop
$1,383Austrian Airlines
Sat, Aug 8 - Sat, Aug 15
Austrian Airlines Logo
10:55 am - 8:40 am
PWM
-
PDL
17h 45m
1 stop
Austrian Airlines Logo
11:00 am - 11:59 pm
PDL
-
PWM
16h 59m
2 stops
$1,387Austrian Airlines
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.

Which airlines provide the cheapest flights from Portland to Portugal?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from Portland to Portugal were found on United Airlines ($705) and Delta ($731).

Find deals

Good to know

Low seasonFebruary
Cheapest flight$634
Best time to beat the crowds with an average 29% drop in price.
Most popular time to fly and prices are also 44% 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 9431 reviews
7.7Boarding
8.1Crew
7.3Comfort
7.1Entertainment
6.6Food
Airline reviews

OK, we were delayed and had to de plane and reboard.

6.0 GoodJamie, Mar 2026
LAX - EWR
Read more United Airlines reviews

OK, we were delayed and had to de plane and reboard.

United is one airline which regardless of how many separate United tickets in existence, if one flight breaks down, the airline will take care of all the flights.

Both our flights were delayed. Almost didn’t get in the second flight. Staff was rude to the bone.

Both my flight where delayed Had 25min to make it to my transfer flight

Everything was on time and service on the flight was great!

Wifi Bluetooth features for watching in flight movie was horrible. Screen kept blacking out no connection of sound although it said connected. Other than that smooth trip .

The 777’s economy seat’s legroom was more tolerable than expected. I appreciate the reclining mechanism which slides the seat forward to minimize cannibalizing the space behind. The food was terrible: very salty.

The travel company that you have on your site did me so wrong. I don’t know how it happened, but they put my son‘s name on my plane ticket flying to Vietnam. Along with his birthday. They would not have let me fly from Fort Myers to Ho Chi Minh City. I don’t think that I can ever use your service again. I typed my information into the browser along with my passport number and four days before I’m leaving I have to quickly search another ticket to fly out here.

Seats are uncomfortable. This has been a trend in the industry for decades. Trying to fit more seats on each plane to increase profits at the expense of the passenger.

The flight was delayed so we were dead tired, and after that the turbulence was horrible. I was very scared.

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

Information on your arrival and departure airports

Portland (PWM)