What are the cheapest airlines flying from Portland to Porto round-trip?

According to our current data, KLM ($813), United Airlines ($829), and Scandinavian Airlines ($950) offers the cheapest pricing from Portland to Porto. KLM is currently priced 25% below the average price you’ll pay for this route.

What are the cheapest airlines to fly from Portland to Porto one-way?

$699 is the cheapest one-way deal found within the past few days, from British Airways. You may also be able to find cheap deals on United Airlines and KLM, with prices starting from $714 and $725, respectively.

What are the most popular airlines that fly from Portland to Porto?

Delta, KLM and United Airlines are the most popular airlines when flying from Portland to Porto.

What is the cheapest day to fly round-trip from Portland to Porto?

Users have found that flying from Portland to Porto on a Tuesday typically leans towards higher prices. However, this doesn’t mean you still can’t find a deal. Flexibility with other aspects of your flight can still land a great price for your trip.

How far in advance should I book a flight from Portland to Porto?

Users have found that booking a flight from Portland to Porto at least 59 days early can save you up to 172% on average compared to booking a flight this week. If booking 59 days before your flight isn’t an option for you, users have found flights from Portland to Porto for as little as $1,197 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as $1,921 for flights departing within the next 3 days.

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

Our data shows that February tends to be the cheapest month to fly to Porto from Portland. Users have commonly found prices around $1,097 for the month, but tickets can be as low as $693. Due to multiple factors, prepare for potentially higher prices in June.

Most accurate provider : When it comes to deals on Portland-Porto flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Portland-Porto flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Portland-Porto flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Portland-Porto flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Portland-Porto flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Can I find deals for flights from Portland to Porto that include hotel bookings?

Yes. In addition to deals on Portland to Porto flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Portland to Porto?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portland to Porto.

Can I find deals for business class flights from Portland to Porto?

Yes. Cheapflights offers flight deals from Portland to Porto by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$388+ Save on Flights from Portland to Porto

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1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

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3. Compare prices and book

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The best prices from Portland to Porto are usually found in February or November, booked 74 days in advance, depart on a Monday or Tuesday and return on a Tuesday

Cheap flight deals from Portland to Porto

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Round-trip from	$813 (KLM)
One-way from	$388 (Kiwi.com)
Popular in	June
Cheapest in	February
Average price	$742

Provider with most accurate pricing for Portland-Porto flight deals.

Search Deals

Provider most trusted by Cheapflights users for Portland-Porto flights.

Search Deals

From Portland to Porto

Search Deals

One-way flight from Portland to Porto

Search Deals

Highest demand for flights based on searches. 20% potential increase in price ($288 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease ($48 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in February 2025

Search Deals

Find flight deals from Portland to Porto

Cheapest flights from Portland to Porto
Explore the most affordable flight options available from Portland to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 22, 2025.

Mon 4/211:15 pmPDX - OPO

1 stop25h 00mKLM

Tue 4/2911:25 amOPO - PDX

1 stop31h 55mKLM

Deal found 2/21

$813

Mon 4/78:45 amPDX - OPO

2 stops17h 00mUnited Airlines

Mon 4/1412:10 pmOPO - PDX

2 stops38h 35mUnited Airlines

Deal found 2/21

$829

Thu 3/67:32 pmPDX - OPO

3 stops32h 23mMultiple Airlines

Mon 3/1011:35 amOPO - PDX

3 stops33h 03mMultiple Airlines

Deal found 2/22

$935

Thu 3/67:05 amPDX - OPO

2 stops20h 05mScandinavian Airlines

Mon 3/1010:55 amOPO - PDX

2 stops42h 37mScandinavian Airlines

Deal found 2/22

$950

Tue 4/19:55 amPDX - OPO

2 stops29h 25mLufthansa

Sat 4/1211:05 amOPO - PDX

2 stops41h 55mLufthansa

Deal found 2/21

$1,035

Mon 5/2611:10 pmPDX - OPO

2 stops31h 20mTAP AIR PORTUGAL

Tue 6/1010:30 pmOPO - PDX

2 stops31h 25mTAP AIR PORTUGAL

Deal found 2/21

$1,260

Sat 2/227:46 amPDX - OPO

2 stops42h 04mTurkish Airlines

Sat 3/14:10 pmOPO - PDX

2 stops52h 23mTurkish Airlines

Deal found 2/21

$1,748

Tue 3/187:30 pmPDX - OPO

2 stops37h 30mIberia

Thu 3/278:20 amOPO - PDX

2 stops45h 40mIberia

Deal found 2/21

$1,750

Sat 6/141:45 pmPDX - OPO

2 stops19h 55mDelta

Sun 6/295:00 amOPO - PDX

1 stop14h 00mDelta

Deal found 2/21

$1,772

Wed 6/181:44 amPDX - OPO

2 stops25h 56mBritish Airways

Thu 7/108:15 amOPO - PDX

2 stops22h 25mBritish Airways

Deal found 2/21

$2,027

Fri 6/207:40 pmPDX - OPO

2 stops29h 50mAir Canada

Mon 7/78:50 amOPO - PDX

3 stops22h 06mAir Canada

Deal found 2/22

$2,385

Best flights from Portland to Porto
Discover carefully curated flight deals from Portland to Porto that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 22, 2025.

Mon 4/211:15 pmPDX - OPO

1 stop25h 00mKLM

Tue 4/2911:25 amOPO - PDX

1 stop31h 55mKLM

Deal found 2/21

$813

Mon 4/78:45 amPDX - OPO

2 stops17h 00mUnited Airlines

Mon 4/1412:10 pmOPO - PDX

2 stops38h 35mUnited Airlines

Deal found 2/21

$829

Thu 3/67:32 pmPDX - OPO

3 stops32h 23mMultiple Airlines

Mon 3/1011:35 amOPO - PDX

3 stops33h 03mMultiple Airlines

Deal found 2/22

$935

Thu 3/67:05 amPDX - OPO

2 stops20h 05mScandinavian Airlines

Mon 3/1010:55 amOPO - PDX

2 stops42h 37mScandinavian Airlines

Deal found 2/22

$950

Tue 4/19:55 amPDX - OPO

2 stops29h 25mLufthansa

Sat 4/1211:05 amOPO - PDX

2 stops41h 55mLufthansa

Deal found 2/21

$1,035

Mon 5/2611:10 pmPDX - OPO

2 stops31h 20mTAP AIR PORTUGAL

Tue 6/1010:30 pmOPO - PDX

2 stops31h 25mTAP AIR PORTUGAL

Deal found 2/21

$1,260

Tue 3/187:30 pmPDX - OPO

2 stops37h 30mIberia

Thu 3/278:20 amOPO - PDX

2 stops45h 40mIberia

Deal found 2/21

$1,750

Sat 6/141:45 pmPDX - OPO

2 stops19h 55mDelta

Sun 6/295:00 amOPO - PDX

1 stop14h 00mDelta

Deal found 2/21

$1,772

Wed 6/181:44 amPDX - OPO

2 stops25h 56mBritish Airways

Thu 7/108:15 amOPO - PDX

2 stops22h 25mBritish Airways

Deal found 2/21

$2,027

Fri 6/207:40 pmPDX - OPO

2 stops29h 50mAir Canada

Mon 7/78:50 amOPO - PDX

3 stops22h 06mAir Canada

Deal found 2/22

$2,385

Last-minute flights from Portland to Porto
Discover last-minute flight deals from Portland to Porto. Data last updated February 22, 2025 and is based on user searches.

Sat 2/227:46 amPDX - OPO

2 stops42h 04mTurkish Airlines

Sat 3/14:10 pmOPO - PDX

2 stops52h 23mTurkish Airlines

Deal found 2/21

$1,748

Thu 3/67:32 pmPDX - OPO

3 stops32h 23mMultiple Airlines

Mon 3/1011:35 amOPO - PDX

3 stops33h 03mMultiple Airlines

Deal found 2/22

$935

Thu 3/67:05 amPDX - OPO

2 stops20h 05mScandinavian Airlines

Mon 3/1010:55 amOPO - PDX

2 stops42h 37mScandinavian Airlines

Deal found 2/22

$950

Tue 3/187:30 pmPDX - OPO

2 stops37h 30mIberia

Thu 3/278:20 amOPO - PDX

2 stops45h 40mIberia

Deal found 2/21

$1,750

Tue 3/1810:09 amPDX - OPO

2 stops17h 26mKLM

Mon 3/2412:15 pmOPO - PDX

1 stop31h 10mKLM

Deal found 2/21

$2,529

Wed 3/197:00 amPDX - OPO

2 stops22h 50mLufthansa

Tue 3/256:00 amOPO - PDX

2 stops22h 10mLufthansa

Deal found 2/21

$1,509

Wed 3/195:40 amPDX - OPO

2 stops22h 10mDelta

Tue 3/256:00 amOPO - PDX

1 stop13h 25mDelta

Deal found 2/21

$2,782

Wed 3/198:55 amPDX - OPO

3 stops23h 20mUnited Airlines

Tue 3/256:00 amOPO - PDX

3 stops49h 50mUnited Airlines

Deal found 2/21

$7,014

One-way flights from Portland to Porto
Search for one-way flight options from Portland to Porto. Find affordable one-way fares based on user searches. Data last updated February 22, 2025.

Tue 5/139:07 amPDX - OPO

3 stops28h 53mMultiple Airlines

Deal found 2/21

$388

Tue 5/207:25 pmPDX - OPO

1 stop16h 05mBritish Airways

Deal found 2/21

$699

Sat 5/1711:35 pmPDX - OPO

2 stops26h 10mUnited Airlines

Deal found 2/21

$714

Wed 5/211:15 pmPDX - OPO

1 stop22h 20mKLM

Deal found 2/21

$725

Sat 5/1012:40 amPDX - OPO

2 stops32h 05mDelta

Deal found 2/21

$729

Tue 4/13:25 pmPDX - OPO

2 stops23h 55mLufthansa

Deal found 2/21

$803

Find flights from Portland to Porto within your budget

Fly from

Fly to

Route

Depart

Return

Price

PortlandPorto

PDX - OPO

PDXOPO

Portland

Mon 4/21

1:15 pm-10:15 pm

1 stop25h 00m

Porto

Tue 4/29

11:25 am-11:20 am

1 stop31h 55m

$813

PortlandPorto

PDX - OPO

PDXOPO

Portland

Mon 4/7

8:45 am-9:45 am

2 stops17h 00m

Porto

Mon 4/14

12:10 pm-6:45 pm

2 stops38h 35m

$829

PortlandPorto

PDX - OPO

PDXOPO

Portland

Thu 3/6

7:32 pm-11:55 am

3 stops32h 23m

Porto

Mon 3/10

11:35 am-1:38 pm

3 stops33h 03m

$935

PortlandPorto

PDX - OPO

PDXOPO

Portland

Thu 3/6

7:05 am-11:10 am

2 stops20h 05m

Porto

Mon 3/10

10:55 am-10:32 pm

2 stops42h 37m

$950

PortlandPorto

PDX - OPO

PDXOPO

Portland

Tue 4/1

9:55 am-11:20 pm

2 stops29h 25m

Porto

Sat 4/12

11:05 am-9:00 pm

2 stops41h 55m

$1,035

PortlandPorto

PDX - OPO

PDXOPO

Portland

Tue 3/18

7:30 pm-4:00 pm

2 stops37h 30m

Porto

Thu 3/27

8:20 am-11:00 pm

2 stops45h 40m

$1,750

PortlandPorto

PDX - OPO

PDXOPO

Portland

Wed 3/19

5:40 am-10:50 am

2 stops22h 10m

Porto

Tue 3/25

6:00 am-12:25 pm

1 stop13h 25m

$2,782

PortlandPorto

PDX - OPO

PDXOPO

Portland

Tue 5/13

9:07 am-10:00 pm

3 stops28h 53m

$388

PortlandPorto

PDX - OPO

PDXOPO

Portland

Tue 5/20

7:25 pm-7:30 pm

1 stop16h 05m

$699

PortlandPorto

PDX - OPO

PDXOPO

Portland

Sat 5/17

11:35 pm-9:45 am

2 stops26h 10m

$714

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/21

Showing 1-10 of 13 results

Compare providers for flights from Portland to Porto

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Portland to Porto in February.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*3 stars
AranGrant	Price Accuracy3 stars	Trust Score*1 star
eDreams	Price Accuracy3 stars	Trust Score*3 stars
SmartFares	Price Accuracy1 star	Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on Portland-Porto flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Portland-Porto flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Portland-Porto flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Portland-Porto flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Portland-Porto flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Portland to Porto

Have a flexible travel schedule? Discover the best time to fly to Porto from Portland with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Travel insights for flights from Portland to Porto

Get recent, data-driven insights about flights from Portland to Porto including ideal travel times, pricing trends, and more.

How far ahead should I book a flight from Portland to Porto?

To ensure you get the cheapest price possible for a flight from Portland to Porto, you should look to book at least 74 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Portland to Porto?

Currently, January is the cheapest month in which you can book a flight from Portland to Porto (average of $523). Flying from Portland to Porto in June is currently the most expensive (average of $1,092). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from PDX to OPO?

A simple way to save on the total cost of your ticket is to fly from Portland to Porto at noon. If you’re flexible enough to do this you can expect to save up to 15% on your trip compared to booking a flight in the morning.

What is the cheapest day to fly from Portland to Porto?

Travelers seeking maximum savings on their Portland to Porto flight should consider departing on Wednesday at noon when fares are most often at their lowest. Wednesday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Rainfall in Porto by month

In terms of precipitation, rainfall in Porto ranges from 0.7 - 7.7 inches per month. December is typically the wettest month, when rainfall can reach 7.7 in. July is typically the driest time to visit Porto when rainfall is around 0.7 in.

Temperature in Porto by month

If weather is an important factor for your trip to Porto, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 68.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 48.2 F).

Reviews of airlines servicing Porto

Delta

8.0

Very good

8,203 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta

8.0

Very good

8,203 reviews

Delta

8.0

Very good

8,203 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

KLM

7.8

Good

1,332 reviews

Delta

8.0

Very good

8,203 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

United Airlines

7.4

Good

8,754 reviews

Delta

8.0

Very good

8,203 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Scandinavian Airlines

7.3

Good

1,320 reviews

Delta

8.0

Very good

8,203 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

TAP AIR PORTUGAL

7.2

Good

1,844 reviews

Delta

8.0

Very good

8,203 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

What are the cheapest airlines flying from Portland to Porto round-trip?
According to our current data, KLM ($813), United Airlines ($829), and Scandinavian Airlines ($950) offers the cheapest pricing from Portland to Porto. KLM is currently priced 25% below the average price you’ll pay for this route.
What are the cheapest airlines to fly from Portland to Porto one-way?
$699 is the cheapest one-way deal found within the past few days, from British Airways. You may also be able to find cheap deals on United Airlines and KLM, with prices starting from $714 and $725, respectively.
Can I find deals for flights from Portland to Porto that include hotel bookings?
Yes. In addition to deals on Portland to Porto flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Portland to Porto?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portland to Porto.
Can I find deals for business class flights from Portland to Porto?
Yes. Cheapflights offers flight deals from Portland to Porto by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Portland to Porto?
Currently, January is the cheapest month in which you can book a flight from Portland to Porto (average of $523). Flying from Portland to Porto in June is currently the most expensive (average of $1,092). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Aveiro

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Alternative routes for Portland to Porto

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Other flights to Porto

Top 3 airlines flying from Portland to Porto

Airline	Cheapest	Average	Flexibility	On-time
Delta	Cheapest$704	Average$1,102	FlexibilityNo cancel fee	On-timeN/A
KLM	Cheapest$713	Average$1,088	FlexibilityNo cancel fee	On-time75%
United Airlines	Cheapest$771	Average$1,417	FlexibilityNo cancel fee	On-time69%

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$388+ Cheap flights from Portland (PDX) to Porto (OPO)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/13. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Portland to Porto with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

The best prices from Portland to Porto are usually found in February or November, booked 74 days in advance, depart on a Monday or Tuesday and return on a Tuesday

Cheap flight deals from Portland to Porto

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Portland to Porto

Cheapest flights from Portland to PortoExplore the most affordable flight options available from Portland to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 22, 2025.

Explore the most affordable flight options available from Portland to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 22, 2025.

Find flights from Portland to Porto within your budget

Compare providers for flights from Portland to Porto

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Portland to Porto in February.

Best time to book a flight from Portland to Porto

Have a flexible travel schedule? Discover the best time to fly to Porto from Portland with our price prediction graph.

Travel insights for flights from Portland to Porto

Get recent, data-driven insights about flights from Portland to Porto including ideal travel times, pricing trends, and more.

How far ahead should I book a flight from Portland to Porto?

Use this chart to determine the optimal time to book a round-trip flight from Portland to Porto. Price data was last updated on February 14, 2025.

What is the cheapest month to book a flight from Portland to Porto?

What is the cheapest time of day to fly from PDX to OPO?

Find hourly flight availability from Portland to Porto. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 22, 2025.

What is the cheapest day to fly from Portland to Porto?

Use this chart to determine the cheapest time to fly round-trip from Portland to Porto. Price data was last updated on December 16, 2024.

Rainfall in Porto by month

Plan your trip to Porto by taking into account the average rainfall totals by month.

Temperature in Porto by month

Plan your trip to Porto by taking into account the average temperature totals by month.

Reviews of airlines servicing Porto

Related info for your journey

Find useful and relevant information for your journey from Portland to Porto. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What are the cheapest airlines flying from Portland to Porto round-trip?

What are the cheapest airlines to fly from Portland to Porto one-way?

Can I find deals for flights from Portland to Porto that include hotel bookings?

How can I find direct flights from Portland to Porto?

Can I find deals for business class flights from Portland to Porto?

What is the cheapest month to book a flight from Portland to Porto?

Traveling to a place near Portland?

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Alternative routes for Portland to Porto

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Top 3 airlines flying from Portland to Porto

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Cheapest flights from Portland to Porto
Explore the most affordable flight options available from Portland to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 22, 2025.