$492 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 3/1. 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

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

Travelers love KAYAK
41.299.237 searches in the past 7 days on KAYAK

Save 23% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Portland to Portugal

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Lisbon
Lisbon1 stop$498
Porto
Porto2 stops$652
Ponta Delgada
Ponta Delgada2 stops$1,149
Lisbon
Lisbon1 stop$498
Porto
Porto2 stops$652
Ponta Delgada
Ponta Delgada2 stops$1,149

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, Mar 9 - Mon, Mar 16
KLM Logo
2:30 pm - 9:00 am
PWM
-
LIS
14h 30m
1 stop
KLM Logo
11:25 am - 11:59 pm
LIS
-
PWM
16h 34m
2 stops
$498KLM
Tue, Mar 10 - Tue, Mar 17
Scandinavian Airlines Logo
2:30 pm - 8:00 am
PWM
-
LIS
13h 30m
2 stops
Scandinavian Airlines Logo
5:00 am - 11:59 pm
LIS
-
PWM
22h 59m
2 stops
$502Scandinavian Airlines
Wed, Feb 25 - Wed, Mar 11
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
$539United Airlines
Wed, Feb 25 - Wed, Mar 11
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
$543United Airlines
Wed, Feb 25 - Thu, Mar 12
Delta Logo
2:35 pm - 5:30 pm
PWM
-
LIS
21h 55m
2 stops
Delta Logo
5:00 am - 11:59 pm
LIS
-
PWM
22h 59m
2 stops
$546Delta
Wed, Feb 25 - Mon, Mar 2
Multiple Airlines Logo
2:35 pm - 10:30 am
PWM
-
OPO
14h 55m
2 stops
Multiple Airlines Logo
4:10 pm - 11:06 pm
OPO
-
PWM
35h 56m
2 stops
$652Multiple Airlines
Sat, Apr 4 - Sun, Apr 12
Delta Logo
4:48 pm - 10:00 pm
PWM
-
OPO
48h 12m
2 stops
Delta Logo
11:45 am - 12:46 am
OPO
-
PWM
42h 01m
2 stops
$800Delta
Wed, Feb 25 - Mon, Mar 2
Lufthansa Logo
3:05 pm - 9:30 am
PWM
-
OPO
13h 25m
1 stop
Lufthansa Logo
12:35 pm - 11:20 pm
OPO
-
PWM
15h 45m
1 stop
$973Lufthansa
Thu, Feb 26 - Mon, Mar 2
Lufthansa Logo
3:10 pm - 9:30 am
PWM
-
OPO
13h 20m
1 stop
Lufthansa Logo
12:35 pm - 11:20 pm
OPO
-
PWM
15h 45m
1 stop
$992Lufthansa
Tue, May 26 - Wed, Jun 3
Multiple Airlines Logo
6:00 am - 6:20 am
PWM
-
PDL
20h 20m
2 stops
Multiple Airlines Logo
5:30 pm - 1:23 pm
PDL
-
PWM
23h 53m
1 stop
$1,149Multiple 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 KLM ($498) and United Airlines ($543).

Good to know

Cheapest flight$492
Most popular time to fly and prices are also 41% 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 9257 reviews
7.7Boarding
6.6Food
7.3Comfort
8.1Crew
7.1Entertainment
Airline reviews

The power at the seat didn't work and the seat itself was difficult to adjust - this was a business class seat. Flight attendant gave me miles to compensate. The attendant was very professional and on top of his game the entire flight.

10.0 ExcellentBill, Feb 2026
IAH - LAX
Read more United Airlines reviews

The power at the seat didn't work and the seat itself was difficult to adjust - this was a business class seat. Flight attendant gave me miles to compensate. The attendant was very professional and on top of his game the entire flight.

Terrible. Our first time back on United for 10 years, the seats in Polaris class are small and uncomfortable. They have squished too many people in to get more $$$. The staff are not friendly and not wanting to accommodate. I asked for two salads rather than a main meal and was advised no we wont do that. Then asked what I would like for breakfast and given something else anyway. I will not be flying United International anytime soon.

Same thing as flight from Pheonix to Newark. Uograded and Promised extra leg room and when I got to the seat it had none.

I upgraded my seat and was promised it would be next to the emergency door for extra leg room and they said it was premium plus but it was at the back of the plane...same thing happened from Newark to Dubai

Everything except the food and entertainment. It was a great experience though

Bad food, bad service, cold cabin with no additional blankets when asked for (they told me they don’t provide additional blankets). I’m a frequent traveler and this is one of the worst companies I traveled with (by the way I thought that I booked my ticket with Lufthansa but I didn’t see that the flights were handled by United).

United Airlines is my preferred airlines and I am thankful for Gary who also help support me on the phone to switch my flight literally last min.

Not being stranded in Chicago for her airport to 11:30 tomorrow morning the 3rd

the whole trip was smooth, and as comfortable as flying is these days. flight crew was friendly and very courteous and helpful.

The attendant on board was amazing. She should be doing business/first international long haul.

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

Information on your arrival and departure airports