$452 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

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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$480
Porto
Porto2 stops$497
Ponta Delgada
Ponta Delgada2 stops$7,237
Lisbon
Lisbon1 stop$480
Porto
Porto2 stops$497
Ponta Delgada
Ponta Delgada2 stops$7,237

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

Fri, Jan 30 - Tue, Feb 3
Delta Logo
2:35 pm - 8:00 amPWM-LIS
12h 25m1 stop
Delta Logo
10:00 am - 1:45 pmLIS-PWM
32h 45m1 stop
$480Delta
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Fri, Jan 30 - Tue, Feb 3
Delta Logo
6:17 am - 3:10 pmPWM-LIS
27h 53m2 stops
Delta Logo
10:00 am - 12:20 amLIS-PWM
19h 20m1 stop
$484Delta
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Fri, Jan 30 - Tue, Feb 3
Delta Logo
2:35 pm - 8:00 amPWM-LIS
12h 25m1 stop
Delta Logo
5:00 am - 12:03 pmLIS-PWM
36h 03m2 stops
$496Delta
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Fri, Jan 23 - Tue, Jan 27
Delta Logo
6:17 am - 10:20 pmPWM-OPO
35h 03m2 stops
Delta Logo
11:15 am - 10:27 pmOPO-PWM
40h 12m2 stops
$497Delta
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Fri, Jan 30 - Tue, Feb 3
Delta Logo
2:35 pm - 3:10 pmPWM-LIS
19h 35m2 stops
Delta Logo
5:00 am - 1:45 pmLIS-PWM
37h 45m2 stops
$499Delta
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Fri, Jan 23 - Tue, Jan 27
KLM Logo
5:30 am - 10:30 amPWM-OPO
24h 00m2 stops
KLM Logo
11:25 am - 12:20 amOPO-PWM
17h 55m2 stops
$544KLM
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Thu, Jan 8 - Thu, Jan 15
United Airlines Logo
6:00 am - 9:20 amPWM-LIS
22h 20m2 stops
United Airlines Logo
5:00 am - 6:50 pmLIS-PWM
18h 50m2 stops
$548United Airlines
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Fri, Jan 23 - Tue, Jan 27
KLM Logo
5:30 am - 10:30 amPWM-OPO
24h 00m2 stops
KLM Logo
9:55 am - 12:20 amOPO-PWM
19h 25m2 stops
$548KLM
Find Deal
Thu, Jan 8 - Thu, Jan 15
United Airlines Logo
3:12 pm - 8:10 amPWM-LIS
11h 58m1 stop
United Airlines Logo
10:15 am - 6:50 pmLIS-PWM
13h 35m1 stop
$561United Airlines
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Fri, May 1 - Tue, May 5
Air France Logo
2:35 pm - 4:05 pmPWM-PDL
21h 30m2 stops
Air France Logo
7:30 am - 1:54 pmPDL-PWM
34h 24m2 stops
$7,237Air France
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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 fly non-stop between Portland and Portugal?

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for round-trip flights from Portland to Portugal.

There is just one airline that flies from Portland to Portugal direct and that is United Airlines. The best round-trip deal found from United Airlines for the route is to Lisbon (LIS) and costs $578.

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 Delta ($480) and KLM ($544).

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Good to know

Low seasonFebruary
Cheapest flight$452
Best time to beat the crowds with an average 39% drop in price.
Most popular time to fly and prices are also 32% 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.

  • What is the cheapest time of day to fly to Portugal?

    The cheapest time of day to fly to Portugal is generally at night, when round-trip flights cost $722 on average. Morning departures are around 19% cheaper than evening flights, on average. The most expensive time of day to fly to Portugal is generally in the evening, which is peak travel time and where the average cost of a ticket is $1,096.

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 9050 reviews
7.3Comfort
6.6Food
7.7Boarding
8.1Crew
7.1Entertainment
Airline reviews

Seats had less pitch than a regional jet. Food was OK. Have to buy alcohol on US based carriers flying international. Boarding was a mess. Did not have bags but overhead space was gone quick. Would like to see the airlines enforce the one bag over and one bag under policy

6.0 GoodAnonymous, Nov 2025IAH - MEX
Read more United Airlines reviews

Seats had less pitch than a regional jet. Food was OK. Have to buy alcohol on US based carriers flying international. Boarding was a mess. Did not have bags but overhead space was gone quick. Would like to see the airlines enforce the one bag over and one bag under policy

Ot was overall fine. Left on time and had basic snacks. Weather was finicky but that’s not the airlines fault.

from SFO-> FRA flight, AVML meal was significantly less compared to regular meal, especially no Desert, no Bread, no sides.

Very nice flight love the small aircraft. We had a wonderful flight attendant. Nice to see someone that really enjoys her job. Don't have her name but had a southern accent.

This was an older airplane. The cabin was constantly warm to hot throughout the 10 hour flight and there were no vents to personalize air flow. Also since it was an older plane, the material and comfort of the chairs were very uncomfortable. I left my flight with major soreness on my tailbone.

Very thoughtful flight attendant offered me water immediately since I had run to make my connection.

Door to door, the crew and staff were amazing. It was a stressful travel day with delays, but they were focused on customers and doing what they could to get us to our destinations.

Even though we were delayed, we were able to make our connection

Seats in waiting area and on plane hard as rock. Fast internet on the flight was great! Crew was kind.

Starlink wifi on the Embraer E175 is an excellent experience. I was able to connect and work from IAD all the way to approach into BTV.

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

Information on your arrival and departure airports

Portland (PWM)