$345 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 4/2. 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$475
Porto
Porto2 stops$507
Ponta Delgada
Ponta Delgada1 stop$983
Lisbon
Lisbon2 stops$475
Porto
Porto2 stops$507
Ponta Delgada
Ponta Delgada1 stop$983

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, Feb 8 - Tue, Feb 17
Multiple Airlines Logo
12:40 pm - 2:50 pm
PWM
-
LIS
21h 10m
2 stops
Multiple Airlines Logo
7:05 am - 10:59 pm
LIS
-
PWM
20h 54m
2 stops
$475Multiple Airlines
Tue, Mar 3 - Tue, Mar 10
United Airlines Logo
3:05 pm - 8:10 am
PWM
-
LIS
12h 05m
1 stop
United Airlines Logo
5:00 am - 6:25 pm
LIS
-
PWM
17h 25m
2 stops
$495United Airlines
Tue, Mar 3 - Tue, Mar 10
United Airlines Logo
3:05 pm - 10:15 am
PWM
-
LIS
14h 10m
2 stops
United Airlines Logo
5:00 am - 6:25 pm
LIS
-
PWM
17h 25m
2 stops
$499United Airlines
Sat, Feb 28 - Sat, Mar 7
Lufthansa Logo
3:05 pm - 8:10 am
PWM
-
LIS
12h 05m
1 stop
Lufthansa Logo
5:00 am - 11:06 pm
LIS
-
PWM
23h 06m
2 stops
$501Lufthansa
Tue, Mar 3 - Tue, Mar 10
United Airlines Logo
3:05 pm - 8:10 am
PWM
-
LIS
12h 05m
1 stop
United Airlines Logo
11:55 am - 2:32 pm
LIS
-
PWM
30h 37m
1 stop
$507United Airlines
Sun, Feb 8 - Tue, Feb 17
American Airlines Logo
7:00 am - 7:40 am
PWM
-
LIS
19h 40m
2 stops
American Airlines Logo
11:05 am - 10:59 pm
LIS
-
PWM
16h 54m
1 stop
$518American Airlines
Sat, Feb 28 - Sat, Mar 7
Multiple Airlines Logo
12:29 pm - 2:50 pm
PWM
-
LIS
21h 21m
2 stops
Multiple Airlines Logo
7:00 am - 10:59 pm
LIS
-
PWM
20h 59m
2 stops
$525Multiple Airlines
Sun, Feb 8 - Tue, Feb 17
American Airlines Logo
6:00 am - 9:05 am
PWM
-
LIS
22h 05m
1 stop
American Airlines Logo
11:05 am - 10:59 pm
LIS
-
PWM
16h 54m
1 stop
$556American Airlines
Wed, Mar 18 - Wed, Mar 25
Delta Logo
2:30 pm - 3:10 pm
PWM
-
LIS
20h 40m
2 stops
Delta Logo
5:00 am - 11:03 pm
LIS
-
PWM
22h 03m
2 stops
$601Delta
Fri, May 1 - Mon, May 11
Air Canada Logo
7:50 pm - 11:00 am
PWM
-
LIS
34h 10m
2 stops
Air Canada Logo
11:25 am - 11:29 pm
LIS
-
PWM
41h 04m
2 stops
$626Air Canada
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 ($495) and Lufthansa ($501).

Good to know

Low seasonFebruary
Cheapest flight$345
Best time to beat the crowds with an average 32% drop in price.
Most popular time to fly and prices are also 19% lower on average.
Flight from Portland to Porto

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 9174 reviews
7.3Comfort
7.7Boarding
7.1Entertainment
6.6Food
8.1Crew
Airline reviews

The flight crew where really good. Better then the crew from BNE to SFO

10.0 ExcellentVanessa, Jan 2026
SFO - IAD
Read more United Airlines reviews

The flight crew where really good. Better then the crew from BNE to SFO

Food should be changed in menu Many muslims travels in this airlime they need to add one Halal meal

Delayed, toilets did not flush, pilot parked to far away from Gate

Was happy we finally got upgraded in 1st class. The seat getting old. The cushiness need some improvement.

Yet another flight in which beverage and snack service was skipped. Other that that, firmly mediocre. Landed early, to gate late due to congestion at the gates. Airline's fault or airports fault: unknown.

Ineffective communication with United resulted in lost baggage. Their Baggage Tracing counter at MUC was shut down from 11:00-14:15 on my arrival. Undertrained, underinformed staff had me Running all over MUC to find someone to help me to no avail. Staff was rude, unhelpful, and unable to effectively use the systems they did have operational. They refused to contact United in any way or provide any accommodation or other resources while I waited for my luggage. This has destroyed my downstream itinerary. If they had even the slightest visibility I may have been able to reschedule/plan, but again, their staff provided nothing, and did nothing more than their website, which doesn’t even work on a standard phone browser. Miserable failure at all levels that weren’t associated with the operation of the aircraft.

Miserable. They moved my seat, but canceled the next leg of my flight. I resolved the issue at my transfer, but that resulted in lost luggage that has taken days off my schedule with no resolution. Worse, they fail to interface effectively with Lufthansa, forcing me to bounce between two equally useless help desks. The apps are unable to handle the situation, the bag dropped off the tracker, and while the call centers are polite, they do not provide written information to assist with cross-airline communication.

left on time, reasonable boarding process arrived early luggage came out quickly

I like flying first class, and United has a nice one

Teeny tiny bathrooms, crew was not realistic about when we'd arrive.

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

Information on your arrival and departure airports