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 62% of people opting to fly with this airline when traveling to Portugal. Keep in mind that there are 20 different airlines that fly to Portugal on a routine basis, so you have a few additional options to choose from.

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

United Airlines and Royal Air Maroc are the most popular carriers operating from Portland to Portugal

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 August 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.

$333 Cheap Flights from Portland, Maine to Portugal in 2026

Discover deals from 900+ travel sites with momondo.

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.

5:06 pm - 9:20 amPWM Portland-LIS Lisbon Humberto Delgado

35h 14m2 stops Newark Toronto Pearson Intl

11:20 am - 1:38 pmLIS Lisbon Humberto Delgado-PWM Portland

31h 18m2 stops Montreal Pierre Elliott Trudeau Intl Newark

$707Air Canada

Mon, Jan 11 - Tue, Jan 19

6:00 am - 8:10 amPWM Portland-LIS Lisbon Humberto Delgado

21h 10m1 stop Newark

11:20 am - 8:19 amLIS Lisbon Humberto Delgado-PWM Portland

49h 59m2 stops Montreal Pierre Elliott Trudeau Intl Newark

$712Multiple Airlines

Mon, Jan 11 - Tue, Jan 19

5:06 pm - 9:30 amPWM Portland-OPO Porto

11h 24m1 stop Newark

6:00 am - 10:57 pmOPO Porto-PWM Portland

21h 57m2 stops Frankfurt am Main Newark

$717United Airlines

Mon, Dec 7 - Fri, Dec 11

7:44 pm - 9:20 amPWM Portland-LIS Lisbon Humberto Delgado

32h 36m2 stops Newark Toronto Pearson Intl

11:20 am - 10:57 pmLIS Lisbon Humberto Delgado-PWM Portland

40h 37m2 stops Montreal Pierre Elliott Trudeau Intl Newark

$720Air Canada

Sat, Jan 2 - Fri, Jan 15

6:00 am - 9:20 amPWM Portland-LIS Lisbon Humberto Delgado

22h 20m2 stops Newark Toronto Pearson Intl

11:20 am - 10:57 pmLIS Lisbon Humberto Delgado-PWM Portland

40h 37m2 stops Montreal Pierre Elliott Trudeau Intl Newark

$720Air Canada

Mon, Jan 4 - Fri, Jan 15

6:00 am - 9:20 amPWM Portland-LIS Lisbon Humberto Delgado

22h 20m2 stops Newark Toronto Pearson Intl

11:20 am - 10:57 pmLIS Lisbon Humberto Delgado-PWM Portland

40h 37m2 stops Montreal Pierre Elliott Trudeau Intl Newark

$720Air Canada

Sun, Jan 3 - Fri, Jan 15

6:30 am - 8:00 amPWM Portland-LIS Lisbon Humberto Delgado

20h 30m1 stop New York John F Kennedy Intl

5:00 am - 11:49 pmLIS Lisbon Humberto Delgado-PWM Portland

23h 49m2 stops Amsterdam Schiphol New York John F Kennedy Intl

$721Delta

Mon, Jan 4 - Wed, Jan 13

6:30 am - 8:00 amPWM Portland-LIS Lisbon Humberto Delgado

20h 30m1 stop New York John F Kennedy Intl

5:00 am - 1:53 pmLIS Lisbon Humberto Delgado-PWM Portland

37h 53m2 stops Amsterdam Schiphol New York John F Kennedy Intl

$721Delta

Mon, Jan 4 - Thu, Jan 14

6:30 am - 8:00 amPWM Portland-LIS Lisbon Humberto Delgado

20h 30m1 stop New York John F Kennedy Intl

5:00 am - 11:49 pmLIS Lisbon Humberto Delgado-PWM Portland

23h 49m2 stops Amsterdam Schiphol New York John F Kennedy Intl

$721Delta

Mon, Jan 4 - Fri, Jan 15

9:45 am - 9:30 amPWM Portland-OPO Porto

18h 45m2 stops Chicago O'Hare Intl Newark

6:00 am - 6:13 pmOPO Porto-PWM Portland

17h 13m2 stops Frankfurt am Main Newark

$722United Airlines

Mon, Dec 7 - Fri, Dec 11

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TAP AIR PORTUGAL flights from Portland, Maine to Portugal

Our best TAP AIR PORTUGAL deals on Portland, Maine to Portugal flight tickets

TAP AIR PORTUGAL

Aug 27

PWM2:40 pmPortland

14h 35m

1 stop

LIS10:15 amLisbon Humberto Delgado

Sep 19

LIS5:00 pmLisbon Humberto Delgado

11h 54m

1 stop

PWM11:54 pmPortland

$1,095

TAP AIR PORTUGAL

Sep 14

PWM6:00 amPortland

30h 00m

2 stops

OPO5:00 pmPorto

Sep 21

OPO10:30 pmPorto

30h 24m

2 stops

PWM11:54 pmPortland

$1,182

TAP AIR PORTUGAL

Aug 27

PWM2:40 pmPortland

14h 35m

1 stop

LIS10:15 amLisbon Humberto Delgado

Sep 19

LIS5:00 pmLisbon Humberto Delgado

11h 54m

1 stop

PWM11:54 pmPortland

$1,284

Air Canada flights from Portland, Maine to Portugal

Our best Air Canada deals on Portland, Maine to Portugal flight tickets

Air Canada

Jan 11

PWM5:06 pmPortland

35h 14m

2 stops

LIS9:20 amLisbon Humberto Delgado

Jan 19

LIS11:20 amLisbon Humberto Delgado

31h 18m

2 stops

PWM1:38 pmPortland

$707

Air Canada

Jan 2

PWM7:44 pmPortland

32h 36m

2 stops

LIS9:20 amLisbon Humberto Delgado

Jan 15

LIS11:20 amLisbon Humberto Delgado

40h 37m

2 stops

PWM10:57 pmPortland

$720

Air Canada

Jan 2

PWM7:44 pmPortland

32h 36m

2 stops

LIS9:20 amLisbon Humberto Delgado

Jan 12

LIS12:50 pmLisbon Humberto Delgado

39h 07m

2 stops

PWM10:57 pmPortland

$750

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortlandLisbon

PWM Portland - LIS Lisbon Humberto Delgado

PWMLIS

Portland

Mon 1/11

5:06 pm-9:20 am

2 stops35h 14m

Lisbon Humberto Delgado

Tue 1/19

11:20 am-1:38 pm

2 stops31h 18m

$707

PortlandLisbon

PWM Portland - LIS Lisbon Humberto Delgado

PWMLIS

Portland

Mon 1/11

6:00 am-8:10 am

1 stop21h 10m

Lisbon Humberto Delgado

Tue 1/19

11:20 am-8:19 am

2 stops49h 59m

$712

Quickest round-trip

PortlandPorto

PWM Portland - OPO Porto

PWMOPO

Portland

Mon 12/7

5:06 pm-9:30 am

1 stop11h 24m

Porto

Fri 12/11

6:00 am-10:57 pm

2 stops21h 57m

$717

PortlandLisbon

PWM Portland - LIS Lisbon Humberto Delgado

PWMLIS

Portland

Sat 1/2

7:44 pm-9:20 am

2 stops32h 36m

Lisbon Humberto Delgado

Fri 1/15

11:20 am-10:57 pm

2 stops40h 37m

$720

PortlandLisbon

PWM Portland - LIS Lisbon Humberto Delgado

PWMLIS

Portland

Mon 1/4

6:00 am-9:20 am

2 stops22h 20m

Lisbon Humberto Delgado

Fri 1/15

11:20 am-10:57 pm

2 stops40h 37m

$720

PortlandLisbon

PWM Portland - LIS Lisbon Humberto Delgado

PWMLIS

Portland

Sun 1/3

6:00 am-9:20 am

2 stops22h 20m

Lisbon Humberto Delgado

Fri 1/15

11:20 am-10:57 pm

2 stops40h 37m

$720

PortlandLisbon

PWM Portland - LIS Lisbon Humberto Delgado

PWMLIS

Portland

Mon 1/4

6:30 am-8:00 am

1 stop20h 30m

Lisbon Humberto Delgado

Wed 1/13

5:00 am-11:49 pm

2 stops23h 49m

$721

PortlandLisbon

PWM Portland - LIS Lisbon Humberto Delgado

PWMLIS

Portland

Mon 1/4

6:30 am-8:00 am

1 stop20h 30m

Lisbon Humberto Delgado

Thu 1/14

5:00 am-1:53 pm

2 stops37h 53m

$721

PortlandLisbon

PWM Portland - LIS Lisbon Humberto Delgado

PWMLIS

Portland

Mon 1/4

6:30 am-8:00 am

1 stop20h 30m

Lisbon Humberto Delgado

Fri 1/15

5:00 am-11:49 pm

2 stops23h 49m

$721

PortlandPorto

PWM Portland - OPO Porto

PWMOPO

Portland

Mon 12/7

9:45 am-9:30 am

2 stops18h 45m

Porto

Fri 12/11

6:00 am-6:13 pm

2 stops17h 13m

$722

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 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

Prices

Airlines

What is the cheapest month to fly to Portugal?

The cheapest month to fly to Portugal from Portland, Maine is in June. Flight prices, which tend to average around $0, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of June, then book flights to Portugal from Portland, Maine during May instead. Flights to Portugal in May, while not as cheap as those in June, still average around $0.

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

Best Price Found	$333
Fastest flight time	10h 57m
Direct flights	None

The best one-way flight to Portugal from Portland, Maine in the past 72 hours is $333. The best round-trip flight deal from Portland, Maine to Portugal found on momondo in the last 72 hours is $707.

The fastest flight from Portland, Maine to Portugal takes 10h 57m

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

Search flight deals

Frequently asked questions about flying from Portland, Maine to Portugal

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 August 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 $550	Free Cancellation	Rating 7.4 10,102 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

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Popular cities

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Other flights to Portugal

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Complete your trip

Feeling lucky

Popular cities in Portugal

Flights to Lisbonfrom $554

Flights to Portofrom $523

Flights to Funchalfrom $597

Flights to Farofrom $610

Flights to Ponta Delgadafrom $576

Flights to Lajesfrom $640

Flights to Hortafrom $696

Flights to Pico Islandfrom $668

Flights to Porto Santofrom $724

Flights to Velasfrom $729

Cheap flights from Portland, Maine to Portugal from $333

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 11/24. 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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TAP AIR PORTUGAL flights from Portland, Maine to Portugal

Our best TAP AIR PORTUGAL deals on Portland, Maine to Portugal flight tickets

Air Canada flights from Portland, Maine to Portugal

Our best Air Canada 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 month to fly to Portugal?

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

What airlines fly to Portugal?

Cheap Portland, Maine to Portugal flight deals and tips

Best Price Found

Fastest flight time

Direct flights

Frequently asked questions about flying from Portland, Maine 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?

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