When did momondo last update prices for flights from Portland Airport to Portugal?

Prices for flights from Portland Airport to Portugal are refreshed on a daily basis.

How many operators does momondo search for flights from Portland Airport to Portugal?

As of February 2026, there is 1 operator available to choose from for flights from Portland Airport to Portugal.

How old do you have to be to fly from Portland Airport to Portugal?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Portland Airport to Portugal.

What documentation or ID do you need to fly to Portugal?

The travel and health documents required for your trip to Portugal can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Portugal. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$498 Cheap Flights from Portland to Portugal in 2026

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Find the cheapest flights from Portland, Maine to Portugal

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

5:45 am - 8:10 am

PWM

LIS

21h 25m

2 stops

11:55 am - 11:20 pm

LIS

PWM

16h 25m

2 stops

$606United Airlines

Wed, Feb 25 - Sun, Mar 1

3:05 pm - 8:10 am

PWM

LIS

12h 05m

1 stop

11:55 am - 2:23 pm

LIS

PWM

31h 28m

1 stop

$607United Airlines

Wed, Feb 25 - Sun, Mar 1

5:45 am - 8:10 am

PWM

LIS

21h 25m

2 stops

11:55 am - 2:23 pm

LIS

PWM

31h 28m

1 stop

$612United Airlines

Wed, Feb 25 - Sun, Mar 1

12:13 pm - 3:25 pm

PWM

OPO

22h 12m

2 stops

11:15 am - 12:18 am

OPO

PWM

42h 03m

2 stops

$663Delta

Wed, Feb 18 - Wed, Feb 25

5:45 am - 9:30 am

PWM

OPO

22h 45m

2 stops

6:00 am - 9:09 pm

OPO

PWM

20h 09m

2 stops

$674United Airlines

Wed, Feb 25 - Sun, Mar 1

12:13 pm - 3:25 pm

PWM

OPO

22h 12m

2 stops

11:15 am - 12:18 am

OPO

PWM

42h 03m

2 stops

$683Delta

Wed, Feb 18 - Mon, Feb 23

6:25 am - 8:55 am

PWM

LIS

45h 30m

2 stops

7:00 am - 11:59 pm

LIS

PWM

21h 59m

2 stops

$751Scandinavian Airlines

Thu, Apr 2 - Sun, Apr 12

5:40 pm - 3:40 pm

PWM

LIS

17h 00m

2 stops

7:20 am - 11:22 pm

LIS

PWM

21h 02m

2 stops

$775Multiple Airlines

Wed, Apr 1 - Wed, Apr 15

6:25 am - 8:55 am

PWM

LIS

45h 30m

2 stops

7:00 am - 11:59 pm

LIS

PWM

21h 59m

2 stops

$780Scandinavian Airlines

Thu, Apr 2 - Sun, Apr 12

2:30 pm - 11:15 am

PWM

LIS

15h 45m

2 stops

10:00 am - 12:46 am

LIS

PWM

19h 46m

1 stop

$804Multiple Airlines

Wed, Apr 1 - Wed, Apr 15

Scandinavian Airlines flights from Portland, Maine to Portugal

Our best Scandinavian Airlines deals on Portland, Maine to Portugal flight tickets

Scandinavian Airlines

Apr 2

PWM6:25 amPortland

45h 30m

2 stops

LIS8:55 amLisbon Humberto Delgado

Apr 12

LIS7:00 amLisbon Humberto Delgado

21h 59m

2 stops

PWM11:59 pmPortland

$751

Scandinavian Airlines

Apr 2

PWM6:25 amPortland

45h 30m

2 stops

LIS8:55 amLisbon Humberto Delgado

Apr 12

LIS7:00 amLisbon Humberto Delgado

21h 59m

2 stops

PWM11:59 pmPortland

$780

Scandinavian Airlines

Feb 16

PWM2:35 pmPortland

14h 55m

2 stops

OPO10:30 amPorto

Feb 21

OPO11:15 amPorto

18h 03m

2 stops

PWM12:18 amPortland

$1,318

United Airlines flights from Portland, Maine to Portugal

Our best United Airlines deals on Portland, Maine to Portugal flight tickets

United Airlines

Feb 25

PWM5:45 amPortland

21h 25m

2 stops

LIS8:10 amLisbon Humberto Delgado

Mar 1

LIS11:55 amLisbon Humberto Delgado

16h 25m

2 stops

PWM11:20 pmPortland

$606

United Airlines

Feb 25

PWM3:05 pmPortland

12h 05m

1 stop

LIS8:10 amLisbon Humberto Delgado

Mar 1

LIS11:55 amLisbon Humberto Delgado

31h 28m

1 stop

PWM2:23 pmPortland

$607

United Airlines

Feb 25

PWM5:45 amPortland

21h 25m

2 stops

LIS8:10 amLisbon Humberto Delgado

Mar 1

LIS11:55 amLisbon Humberto Delgado

31h 28m

1 stop

PWM2:23 pmPortland

$612

Fly from

Fly to

Route

Depart

Return

Price

PortlandLisbon

PWM - LIS

PWMLIS

Portland

Wed 2/25

5:45 am-8:10 am

2 stops21h 25m

Lisbon Humberto Delgado

Sun 3/1

11:55 am-11:20 pm

2 stops16h 25m

$606

PortlandLisbon

PWM - LIS

PWMLIS

Portland

Wed 2/25

3:05 pm-8:10 am

1 stop12h 05m

Lisbon Humberto Delgado

Sun 3/1

11:55 am-2:23 pm

1 stop31h 28m

$607

PortlandLisbon

PWM - LIS

PWMLIS

Portland

Wed 2/25

5:45 am-8:10 am

2 stops21h 25m

Lisbon Humberto Delgado

Sun 3/1

11:55 am-2:23 pm

1 stop31h 28m

$612

PortlandPorto

PWM - OPO

PWMOPO

Portland

Wed 2/18

12:13 pm-3:25 pm

2 stops22h 12m

Porto

Wed 2/25

11:15 am-12:18 am

2 stops42h 03m

$663

PortlandPorto

PWM - OPO

PWMOPO

Portland

Wed 2/25

5:45 am-9:30 am

2 stops22h 45m

Porto

Sun 3/1

6:00 am-9:09 pm

2 stops20h 09m

$674

PortlandPorto

PWM - OPO

PWMOPO

Portland

Wed 2/18

12:13 pm-3:25 pm

2 stops22h 12m

Porto

Mon 2/23

11:15 am-12:18 am

2 stops42h 03m

$683

PortlandLisbon

PWM - LIS

PWMLIS

Portland

Thu 4/2

6:25 am-8:55 am

2 stops45h 30m

Lisbon Humberto Delgado

Sun 4/12

7:00 am-11:59 pm

2 stops21h 59m

$751

PortlandLisbon

PWM - LIS

PWMLIS

Portland

Wed 4/1

5:40 pm-3:40 pm

2 stops17h 00m

Lisbon Humberto Delgado

Wed 4/15

7:20 am-11:22 pm

2 stops21h 02m

$775

PortlandLisbon

PWM - LIS

PWMLIS

Portland

Thu 4/2

6:25 am-8:55 am

2 stops45h 30m

Lisbon Humberto Delgado

Sun 4/12

7:00 am-11:59 pm

2 stops21h 59m

$780

PortlandLisbon

PWM - LIS

PWMLIS

Portland

Wed 4/1

2:30 pm-11:15 am

2 stops15h 45m

Lisbon Humberto Delgado

Wed 4/15

10:00 am-12:46 am

1 stop19h 46m

$804

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 17 resultsSorted by cheapest first

How to get the cheapest flight ticket from Portland, Maine to Portugal

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from Portland to Portugal?

Delta, Air Canada, and United Airlines are the most popular carriers operating from Portland to Portugal

What airlines fly to Portugal?

TAP AIR PORTUGAL, Azores Airlines and Delta are the top three most popular airlines that fly to Portugal from Portland, Maine according to our data. TAP AIR PORTUGAL is the first choice among our users, with 64% of people opting to fly with this airline when traveling to Portugal. Keep in mind that there are 22 different airlines that fly to Portugal on a routine basis, so you have a few additional options to choose from.

Cheap Portland, Maine to Portugal flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Portland, Maine to Portugal

Fastest flight time	12h 09m
Direct flights	None

The fastest flight from Portland, Maine to Portugal takes 12h 09m

There are no direct flights from Portland, Maine to Portugal. There are no popular flight routes from Portland, Maine to Portugal.

Search flight deals

When did momondo last update prices for flights from Portland Airport to Portugal?
Prices for flights from Portland Airport to Portugal are refreshed on a daily basis.
How many operators does momondo search for flights from Portland Airport to Portugal?
As of February 2026, there is 1 operator available to choose from for flights from Portland Airport to Portugal.
How old do you have to be to fly from Portland Airport to Portugal?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Portland Airport to Portugal.
What documentation or ID do you need to fly to Portugal?
The travel and health documents required for your trip to Portugal can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Portugal. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from Portland, Maine to Portugal

Compare and see reviews for airlines that fly from Portland, Maine to Portugal with momondo

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom $578	Free Cancellation	Rating 7.4 9,236 reviews		Search United Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Portland to Portugal?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Portland to Portugal for you.

Can I find flights from Portland to Portugal with flexible booking policies on momondo?

Flights from Portland to Portugal with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Portland to Portugal?

Once you have performed a search for Portland to Portugal flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Portland to Portugal right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Portugal from Portland. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your Portugal trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

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Find better results for your trip to Portugal

Popular cities

Other flights from Portland, Maine

Other flights to Portugal

Airlines

Cabin classes

Complete your trip

Feeling lucky

Popular cities in Portugal

Flights to Lisbonfrom $373

Flights to Portofrom $350

Flights to Funchalfrom $407

Flights to Farofrom $385

Flights to Ponta Delgadafrom $419

Flights to Lajesfrom $475

Flights to Hortafrom $559

Flights to Pico Islandfrom $587

Flights to Porto Santofrom $422

Flights to Velasfrom $577

Cheap flights from Portland, Maine to Portugal from $498

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Portland, Maine to Portugal departing on 3/1. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Big names and deals

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Filter for what you want

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Find the cheapest flights from Portland, Maine to Portugal

Cheap round-trip flights

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Scandinavian Airlines flights from Portland, Maine to Portugal

Our best Scandinavian Airlines deals on Portland, Maine to Portugal flight tickets

United Airlines flights from Portland, Maine to Portugal

Our best United Airlines deals on Portland, Maine to Portugal flight tickets

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How to get the cheapest flight ticket from Portland, Maine to Portugal

What is the cheapest airline that flies from Portland to Portugal?

Delta, Air Canada, and United Airlines are the most popular carriers operating from Portland to Portugal

What airlines fly to Portugal?

Cheap Portland, Maine to Portugal flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Portland, Maine to Portugal

Fastest flight time

Direct flights

When did momondo last update prices for flights from Portland Airport to Portugal?

How many operators does momondo search for flights from Portland Airport to Portugal?

How old do you have to be to fly from Portland Airport to Portugal?

What documentation or ID do you need to fly to Portugal?

Best airlines flying from Portland, Maine to Portugal

Compare and see reviews for airlines that fly from Portland, Maine to Portugal with momondo

Why use momondo?

Why should I use momondo to find a flight deal from Portland to Portugal?

Can I find flights from Portland to Portugal with flexible booking policies on momondo?

How can momondo help me find flights from Portland to Portugal?

I’m not ready to book a flight from Portland to Portugal right now. Can momondo alert me if prices change?

An easier way to manage your Portugal trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Portugal

Popular cities in Portugal

Popular flights according to clicks in the last 7 days on momondo

Portland, Maine flight routes

According to popular flight searches on momondo this year

Portugal flight routes

According to popular flight searches on momondo this year

Fly your favorite airline to Portugal

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to Portugal

List of cabin classes available on flights landing in Portugal. Availability may vary depending on flight origin and airline.

Complete your trip to Portugal

Explore popular destinations other users love

According to popular flight searches on momondo this year