$328 Find Cheap Flights from Portland to Portugal - Compare and Save

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Cheap Flights from Portland to Portugal

Cheapest round-trip prices found by our users on KAYAK in the last 5 days
Lisbon
Lisbon1 stop$788
Porto
Porto2 stops$721
Ponta Delgada
Ponta Delgada2 stops$1,093
Lisbon
Lisbon1 stop$788
Porto
Porto2 stops$721
Ponta Delgada
Ponta Delgada2 stops$1,093

Book Cheap Portland to Portugal Plane Tickets

 

Cheap flights from Portland with top airlines, updated regularly. Compare round-trip, one-way, direct and last-minute deals.

Sat, Feb 20 - Fri, Feb 26
United Airlines Logo
9:34 am - 9:30 amPWM  Portland-OPO Porto
42h 56m2 stops Washington, D.C. Dulles Intl Newark
United Airlines Logo
6:00 am - 9:18 pmOPO  Porto-PWM Portland
20h 18m2 stops Frankfurt am Main Newark
$721United Airlines
Sat, Feb 20 - Fri, Feb 26
United Airlines Logo
9:34 am - 9:30 amPWM  Portland-OPO Porto
42h 56m2 stops Washington, D.C. Dulles Intl Newark
United Airlines Logo
12:35 pm - 10:55 pmOPO  Porto-PWM Portland
15h 20m1 stop Newark
$730United Airlines
Sat, Feb 20 - Fri, Feb 26
United Airlines Logo
8:55 am - 9:30 amPWM  Portland-OPO Porto
19h 35m1 stop Newark
United Airlines Logo
12:35 pm - 10:55 pmOPO  Porto-PWM Portland
15h 20m1 stop Newark
$771United Airlines
Thu, Nov 26 - Thu, Dec 3
United Airlines Logo
10:50 am - 9:30 amPWM  Portland-OPO Porto
17h 40m1 stop Newark
United Airlines Logo
6:00 am - 7:25 pmOPO  Porto-PWM Portland
18h 25m2 stops Frankfurt am Main Newark
$779United Airlines
Thu, Nov 26 - Thu, Dec 3
United Airlines Logo
5:30 am - 9:30 amPWM  Portland-OPO Porto
23h 00m2 stops Washington, D.C. Dulles Intl Newark
United Airlines Logo
6:00 am - 9:29 pmOPO  Porto-PWM Portland
20h 29m2 stops Frankfurt am Main Chicago O'Hare Intl
$783United Airlines
Fri, Nov 13 - Thu, Nov 19
Delta Logo
4:03 pm - 8:00 amPWM  Portland-LIS Lisbon Humberto Delgado
10h 57m1 stop New York John F Kennedy Intl
Delta Logo
5:00 am - 12:19 amLIS  Lisbon Humberto Delgado-PWM Portland
24h 19m2 stops Amsterdam Schiphol New York John F Kennedy Intl
$788Delta
Thu, Nov 26 - Thu, Dec 3
Delta Logo
11:50 am - 8:00 amPWM  Portland-LIS Lisbon Humberto Delgado
15h 10m1 stop New York John F Kennedy Intl
Delta Logo
5:00 am - 11:52 pmLIS  Lisbon Humberto Delgado-PWM Portland
23h 52m2 stops Amsterdam Schiphol Atlanta Hartsfield-Jackson
$788Delta
Thu, Nov 26 - Thu, Dec 3
United Airlines Logo
10:50 am - 9:30 amPWM  Portland-OPO Porto
17h 40m1 stop Newark
United Airlines Logo
12:35 pm - 7:25 pmOPO  Porto-PWM Portland
11h 50m1 stop Newark
$789United Airlines
Fri, Nov 13 - Thu, Nov 19
Delta Logo
4:03 pm - 11:25 amPWM  Portland-LIS Lisbon Humberto Delgado
14h 22m2 stops New York John F Kennedy Intl Paris Charles de Gaulle
Delta Logo
11:30 am - 12:19 amLIS  Lisbon Humberto Delgado-PWM Portland
17h 49m2 stops Amsterdam Schiphol New York John F Kennedy Intl
$792Delta
Thu, Nov 26 - Thu, Dec 3
Delta Logo
11:50 am - 11:25 amPWM  Portland-LIS Lisbon Humberto Delgado
18h 35m2 stops New York John F Kennedy Intl Paris Charles de Gaulle
Delta Logo
11:30 am - 12:21 amLIS  Lisbon Humberto Delgado-PWM Portland
17h 51m2 stops Amsterdam Schiphol New York John F Kennedy Intl
$792Delta

Price, demand and travel trends for Portland to Portugal flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

What are the cheapest fares from Portland to Portugal right now?

The cheapest fares from Portland to Portugal on KAYAK in the last week were to Porto (OPO) from $721 round-trip, and to Lisbon Humberto Delgado (LIS) from $788 round-trip.

Which airport in Portugal is the cheapest to fly to from Portland?

Based on KAYAK data from the past 12 months, the cheapest airports to fly into Portugal are:

• Lisbon Humberto Delgado (LIS) from $977
• Porto (OPO) from $1,551

What's the cheapest time of day to fly from Portland to Portugal?

Data from the past 12 months shows it's cheapest to fly to Portugal during the afternoon with average prices of $1,081. The morning is the most expensive time to fly, with average prices of $1,561.

Find deals

Key details for Portland to Portugal flights

Low season

April

Cheapest flight

$328
Beat the crowds with an average 83% drop in travelers.
The most popular month to fly with an average 29% increase in travelers.
One-way flight from Portland to Lisbon

Your Portland to Portugal flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • Is now a good time to book a flight from Portland to Portugal?

    Yes. Fares from Portland to Portugal are low right now. As a rule of thumb, a round-trip under $722 (cheaper than most fares this year) is a good deal, so if you spot one at or below that, it's a good time to book.

  • How much should I budget for a flight from Portland to Portugal?

    Over the past 12 months, round-trip fares from Portland to Portugal have ranged from $722 to $1,551.

  • Which cabin classes are available on flights from Portland to Portugal?

    On flights from Portland to Portugal you can only book Economy Class.

  • What are some popular landmarks in Portugal?

    KAYAK travelers' favorite landmarks in Portugal include:

    • Chiado
    • Ribeira Square
    • Avenida dos Aliados
    • Praça do Marquês de Pombal

Your guide to booking Portland to Portugal flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your travel dates are flexible, book your trip for February when flights are typically cheapest and avoid December when prices are at their highest.
  • Flying on Tuesday is usually the cheapest. Flights on Monday cost about 50% more on average, so being flexible with your travel dates could help you save.
  • If you're looking to save, Lisbon Humberto Delgado (LIS) is the cheapest airport to fly into from Portland. If you have onward travel, don't forget to factor in the cost of your journey by train, bus or domestic flight.
  • Start your trip in Lisbon, which is the most popular destination in Portugal. From there, it's easy to continue on to other popular destinations such as Porto, Albufeira and Funchal.

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 10362 reviews
8.1Crew
6.7Food
7.3Comfort
7.7Boarding
7.1Entertainment
Airline reviews

I couldn’t give an honest evaluation, because the Houston airport has a problem and I was stand up for several hours and after a long trip from Munich I feel really very tired

6.0 GoodAnonymous, Oct 2026
Read more United Airlines reviews

I couldn’t give an honest evaluation, because the Houston airport has a problem and I was stand up for several hours and after a long trip from Munich I feel really very tired

A couple flight attendants in business class had bad attitudes and provided poor service. They did provide drinks or refill drinks. They talked to certain passengers for long periods of time and ignored others.

I especially enjoyed having a lightly packed flight which enabled me and my wife to occupy a three seat area with nobody in the middle seat.

Fantastic experience once again flying with United! There was great communication from the cockpit and one of the flight attendants went out of her way to get my two little kids some special treats which elevated our travel experience coming home.

Improve the food offerings and cabin seating. My wife would prefer to fly another airline, even with a connection for a more comfortable trip. A 737-8 should not be scheduled for a 6 hour segment, which turned into 7.5 hours due to the origin ground delay.

OK, I don’t expect much from coach class. Everything basically is pretty lousy. But at least I expect my bloody luggage to get from A to B. Tap Airlines lost my luggage and it has been more than 24 hours in Lisbon and they still have not located my luggage. On top of that, they are incredibly unhelpful. They feel actually dismissive. This lousy customer service.

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

Food was poorly timed and not good.. Hand held snacks, really. I kept asking for water and never got any. Service was rushed for a 7-hour flight.

I just got back from a trip with 3 flights each way. The flights were good and we were happy with out experience. There was one steward on our first flight that was harsh and grump with passengers. It did not leave a good impression. All of the other flight crews were great on the other five flights.

They changed my flight 5 hours before it took off and changed my connecting airport messing up my entire 1st day in Japan.

More options for your flight from Portland to Portugal

Complete your trip to Portugal with a hotel stay or car rental

Car rentals in Portugal
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