$331 Find Cheap Flights from Portland to Portugal - Compare and Save

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 10/21. 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

Save 20% or more on flights. Compare deals from all over the web.

Never overpay with our price tracking tools.

Filter searches by price, airline and more to find your best flights.

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$774
Porto
Porto1 stop$726
Lisbon
Lisbon1 stop$774
Porto
Porto1 stop$726

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, Nov 16 - Wed, Nov 18
United Airlines Logo
10:48 am - 9:30 am
PWM
-
OPO
17h 42m
1 stop
United Airlines Logo
12:35 pm - 11:23 pm
OPO
-
PWM
15h 48m
1 stop
$726United Airlines
Mon, Nov 16 - Wed, Nov 18
United Airlines Logo
8:47 am - 9:30 am
PWM
-
OPO
19h 43m
2 stops
United Airlines Logo
12:35 pm - 11:23 pm
OPO
-
PWM
15h 48m
1 stop
$730United Airlines
Mon, Nov 16 - Wed, Nov 18
United Airlines Logo
8:47 am - 9:30 am
PWM
-
OPO
19h 43m
2 stops
United Airlines Logo
12:35 pm - 11:23 pm
OPO
-
PWM
15h 48m
1 stop
$731United Airlines
Sun, Oct 4 - Thu, Oct 15
United Airlines Logo
6:00 am - 8:20 am
PWM
-
LIS
21h 20m
1 stop
United Airlines Logo
5:05 am - 11:28 pm
LIS
-
PWM
23h 23m
2 stops
$774United Airlines
Wed, Oct 7 - Tue, Oct 13
Delta Logo
1:52 pm - 2:55 pm
PWM
-
LIS
20h 03m
2 stops
Delta Logo
5:00 am - 11:19 pm
LIS
-
PWM
23h 19m
2 stops
$779Delta
Sun, Dec 6 - Wed, Dec 9
Air Canada Logo
6:00 am - 10:40 am
PWM
-
LIS
47h 40m
2 stops
Air Canada Logo
11:20 am - 10:57 pm
LIS
-
PWM
40h 37m
2 stops
$782Air Canada
Mon, Oct 5 - Wed, Oct 14
Air Canada Logo
6:00 am - 11:00 am
PWM
-
LIS
24h 00m
2 stops
Air Canada Logo
11:25 am - 11:28 pm
LIS
-
PWM
17h 03m
2 stops
$797Air Canada
Mon, Oct 5 - Thu, Oct 15
Air Canada Logo
6:00 am - 11:00 am
PWM
-
LIS
24h 00m
2 stops
Air Canada Logo
1:00 pm - 11:28 pm
LIS
-
PWM
15h 28m
2 stops
$802Air Canada
Mon, Oct 5 - Tue, Oct 13
Delta Logo
5:29 pm - 10:30 am
PWM
-
OPO
12h 01m
1 stop
Delta Logo
5:00 am - 12:10 am
OPO
-
PWM
24h 10m
2 stops
$876Delta
Mon, Oct 5 - Fri, Oct 16
Delta Logo
1:59 pm - 10:30 am
PWM
-
OPO
15h 31m
1 stop
Delta Logo
5:00 am - 12:10 am
OPO
-
PWM
24h 10m
2 stops
$877Delta
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.

What is the cheapest month to fly from Portland to Portugal?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Portland to Portugal, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Portland to Portugal is May, when tickets cost $0 (return) on average. On the other hand, the most expensive months are December and September, when the average cost of round-trip tickets is $2,159 and $1,533 respectively.

Find deals

Good to know

Low season

February

Cheapest flight

$331
Best time to beat the crowds with an average 49% drop in price.
Most popular time to fly and prices are also 49% lower on average.
Flight from Portland to Lisbon

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.

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

Information on your arrival and departure airports

Portland (PWM)