United States
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PDX - OPO

$335 Find Cheap Flights from Portland to Porto - Compare and Save

1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$706
Typical prices: $836-$1,203
Multiple Airlines
Wed 1/31Sat 2/24
PDX - OPO • 2 stops
Cheapest one-way
$335
Typical prices: $489-$756
United Airlines
Thu 3/1
PDX - OPO • 2 stops
Nonstop flights
Not available
There are currently no direct flights between Portland and Porto. You'll need to take a connecting flight to reach the destination.
Insights
Insights
When to book
8 weeks
in advance
Our data shows that travelers who book at least 8 weeks in advance save around 49% compared to booking last minute.
Insights
Insights
When to travel
November
Cheapest • 44% price drop
September
Most popular
Good to know
+1
Good to know
+1
Top layover airports
New York John F Kennedy Intl (JFK)
Cheapest • Avg $979 (round-trip)
Amsterdam Schiphol (AMS)
Shortest trip • 14h 17m (one-way)
Insights
Insights
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We hope you love your trip to Porto!

Cheap Flights from Portland to Porto (PDX-OPO)

 

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

Sun, Jan 31 - Wed, Feb 24
Multiple Airlines Logo
7:10 pm - 3:25 pmPDX  Portland-OPO Porto
36h 15m2 stops Vancouver Intl Frankfurt am Main
Multiple Airlines Logo
6:00 am - 6:31 pmOPO  Porto-PDX Portland
20h 31m2 stops Frankfurt am Main Vancouver Intl
$706Multiple Airlines
Tue, Mar 2 - Tue, Mar 16
SWISS Logo
1:39 pm - 6:30 pmPDX  Portland-OPO Porto
20h 51m2 stops San Francisco Zurich
SWISS Logo
7:20 pm - 11:07 pmOPO  Porto-PDX Portland
34h 47m2 stops Zurich Chicago O'Hare Intl
$707SWISS
Wed, Feb 3 - Wed, Mar 3
Multiple Airlines Logo
7:10 am - 3:20 pmPDX  Portland-OPO Porto
24h 10m2 stops Chicago O'Hare Intl Frankfurt am Main
Multiple Airlines Logo
6:00 am - 6:30 pmOPO  Porto-PDX Portland
20h 30m2 stops Frankfurt am Main Vancouver Intl
$711Multiple Airlines
Mon, Feb 22 - Fri, Feb 26
KLM Logo
1:20 pm - 3:25 pmPDX  Portland-OPO Porto
18h 05m1 stop Amsterdam Schiphol
KLM Logo
5:00 am - 11:20 amOPO  Porto-PDX Portland
14h 20m1 stop Amsterdam Schiphol
$718KLM
Sun, Feb 21 - Wed, Feb 24
Delta Logo
1:20 pm - 10:30 pmPDX  Portland-OPO Porto
25h 10m1 stop Amsterdam Schiphol
Delta Logo
5:00 am - 11:20 amOPO  Porto-PDX Portland
14h 20m1 stop Amsterdam Schiphol
$718Delta
Sun, Feb 21 - Thu, Feb 25
Delta Logo
1:20 pm - 10:30 pmPDX  Portland-OPO Porto
25h 10m1 stop Amsterdam Schiphol
Delta Logo
11:15 am - 11:20 amOPO  Porto-PDX Portland
32h 05m1 stop Amsterdam Schiphol
$718Delta
Sun, Jan 31 - Wed, Feb 24
KLM Logo
1:20 pm - 11:25 amPDX  Portland-OPO Porto
14h 05m1 stop Amsterdam Schiphol
KLM Logo
5:00 am - 11:20 amOPO  Porto-PDX Portland
14h 20m1 stop Amsterdam Schiphol
$719KLM
Sun, Feb 28 - Wed, Mar 10
KLM Logo
1:20 pm - 11:25 amPDX  Portland-OPO Porto
14h 05m1 stop Amsterdam Schiphol
KLM Logo
5:00 am - 11:20 amOPO  Porto-PDX Portland
14h 20m1 stop Amsterdam Schiphol
$719KLM
Wed, Feb 24 - Tue, Mar 2
United Airlines Logo
5:15 am - 9:30 amPDX  Portland-OPO Porto
20h 15m2 stops Denver Intl Newark
United Airlines Logo
6:00 am - 8:33 pmOPO  Porto-PDX Portland
22h 33m2 stops Frankfurt am Main San Francisco
$727United Airlines
Tue, Feb 23 - Tue, Mar 2
United Airlines Logo
6:59 pm - 9:30 amPDX  Portland-OPO Porto
30h 31m2 stops Denver Intl Newark
United Airlines Logo
6:00 am - 8:49 pmOPO  Porto-PDX Portland
22h 49m2 stops Frankfurt am Main Denver Intl
$727United Airlines

Price, demand and travel trends for Portland to Porto flights

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

What's the cheapest day of the week to fly from Portland to Porto?

Based on deals KAYAK users found in the last 12 months, Tuesday is the cheapest day of the week to fly from Portland to Porto. It’s 14% cheaper than the average day, while Friday is the most expensive, with prices 24% higher.

What’s the cheapest month to fly from Portland to Porto?

•November is the cheapest month to fly from Portland to Porto at $542 round-trip.
•October ($1,205) and July ($1,199) are the most expensive months.
•The price difference between flying in the cheapest and most expensive months is 122% on average.
This is based on KAYAK aggregated and averaged internal data over the past 12 months.

When are flights from Portland to Porto the cheapest?

Flights from Portland to Porto are cheapest 8 weeks before departure. Booking in this window typically costs about 49% less than the average last-minute fare (within 2 weeks of the flight), based on KAYAK data.

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Key details for Portland to Porto flights

Low season

February

Cheapest flight

$335
Beat the crowds with an average 56% drop in travelers.
The most popular month to fly with an average 106% increase in travelers.
One-way flight from Portland to Porto

When to book flights from Portland to Porto

Are your dates flexible? Find out the best times to travel from Portland to Porto based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your Portland to Porto flight questions, answered

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

  • What cabin classes can I book on flights from Portland to Porto?

    Four cabin classes are available on flights from Portland to Porto:

    • Economy Class
    • Premium Economy Class
    • Business Class
    • First Class

    Prices vary by airline.

  • How long is a flight from Portland to Porto?

    A nonstop flight from Portland to Porto takes 00m, covering 5,183 miles.

  • Do I need a passport to fly from Portland to Porto?

    Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

  • How much should I expect to pay for a Portland to Porto flight?

    Round-trip flights from Portland to Porto range from $836 to $1,203, with an average of $967 over the past 12 months. Anything below $836 counts as a good deal.

  • How expensive are last-minute Portland to Porto flights?

    Last-minute fares on this route (booked within two weeks of departure) run 38% above the $967 route average. Book 8 weeks before departure for the lowest fares.

  • How are flight prices from Portland to Porto looking right now?

    One-way fares from Portland to Porto are currently higher than usual. Average one-way flight prices are about $1,279, which is 120% above the typical average for this route.

  • What car rental options are available at Porto Airport (OPO)?

    Porto Airport (OPO) hosts 5 major car rental companies, with daily rates starting from around $2 for economy cars. Top options include:

    • GREEN MOTION
    • Drive on Holiday
    • Klass Wagen
    • Goldcar Rental SP
    • Sixt

  • Which airports can I use when flying from Portland to Porto?

    Flights from Portland to Porto usually depart from Portland (PDX) and arrive at Porto (OPO).

  • Which airports do connecting flights from Portland to Porto pass through?

    One-stop flights from Portland to Porto most commonly connect through:

    • Amsterdam Schiphol (AMS) - 79% of one-stop connections
    • Newark (EWR) - 15% of one-stop connections
    • New York John F Kennedy Intl (JFK) - 6% of one-stop connections

  • Can I save money by using flexible dates for flights from Portland to Porto?

    Yes. Flexible dates can save you up to 31% on flights from Portland to Porto. Tuesday is the cheapest departure day at $837 round-trip on average, while Friday is the most expensive at $1,205, a difference of $368.

    KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

  • How much time can I save by choosing a different layover airport from Portland to Porto?

    Flying via Amsterdam Schiphol (AMS) gives the shortest average 1-stop total travel time at 14h 17m, compared with 16h 28m via Newark (EWR) and 16h 36m via New York John F Kennedy Intl (JFK).

  • What is the time difference between Portland and Porto?

    Porto is 8 hours ahead of Portland (Western European Time vs Pacific Time). Plan for the time shift when scheduling connections or first-day activities.

  • What popular places can I visit in Porto?

    Some of the most popular sights in Porto are Ribeira Square, Avenida dos Aliados and Boavista Square. These are among the most viewed places in Porto on KAYAK.

Your guide to booking Portland to Porto flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your dates are flexible, aim for a Tuesday departure and avoid flying on Friday. On this route, Tuesday flights average $837, about $368 less than Friday fares (31% savings) based on the last 12 months.
  • For the best chance at a low fare, aim to book around 8 weeks before you fly. On this route, that window historically saves about 49% versus last-minute pricing (KAYAK booking data, last 12 months).
  • If you can choose when to travel, plan your Portland to Porto trip for November. Fares historically average $542 round-trip in that month - typically $663 less than the most expensive month, which is October (based on the last 12 months).
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to Porto Airport.

    • Opo Hotel Porto Aeroporto

More options for your flight from Portland to Porto

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

Car rentals in Porto
Hotels in Porto
Vacations in Porto