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

TAP AIR PORTUGAL 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 20 different airlines that fly to Portugal on a routine basis, so you have a few additional options to choose from.

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 July 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.

$606 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.

10:43 am - 9:45 am

PWM

OPO

18h 02m

1 stop

8:40 am - 11:28 pm

OPO

PWM

19h 48m

2 stops

$774SWISS

Mon, Oct 19 - Fri, Oct 23

4:15 pm - 3:25 pm

PWM

OPO

18h 10m

2 stops

11:25 am - 12:10 am

OPO

PWM

17h 45m

2 stops

$778Delta

Mon, Oct 19 - Fri, Oct 23

6:55 pm - 9:45 am

PWM

OPO

9h 50m

1 stop

12:35 pm - 11:28 pm

OPO

PWM

15h 53m

1 stop

$781Multiple Airlines

Mon, Oct 19 - Fri, Oct 23

7:57 am - 9:45 am

PWM

OPO

20h 48m

1 stop

11:20 am - 2:38 pm

OPO

PWM

56h 18m

2 stops

$833United Airlines

Tue, Oct 13 - Sun, Oct 18

6:00 am - 7:00 am

PWM

OPO

20h 00m

2 stops

6:00 am - 11:59 pm

OPO

PWM

22h 59m

2 stops

$837United Airlines

Tue, Oct 13 - Sun, Oct 18

2:53 pm - 10:45 am

PWM

LIS

14h 52m

2 stops

7:45 pm - 4:01 pm

LIS

PWM

25h 16m

2 stops

$888Multiple Airlines

Tue, Aug 11 - Tue, Aug 18

6:54 pm - 9:45 am

PWM

OPO

9h 51m

1 stop

6:00 am - 11:28 pm

OPO

PWM

22h 28m

2 stops

$890United Airlines

Fri, Oct 2 - Fri, Oct 9

5:15 am - 9:45 am

PWM

OPO

23h 30m

2 stops

6:00 am - 11:28 pm

OPO

PWM

22h 28m

2 stops

$894United Airlines

Fri, Oct 2 - Fri, Oct 9

7:28 am - 9:05 am

PWM

LIS

20h 37m

1 stop

11:05 am - 11:41 pm

LIS

PWM

17h 36m

1 stop

$945American Airlines

Tue, Aug 11 - Tue, Aug 18

3:06 pm - 9:05 am

PWM

LIS

12h 59m

1 stop

11:05 am - 11:41 pm

LIS

PWM

17h 36m

1 stop

$955American Airlines

Thu, Aug 13 - Thu, Aug 20

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Air Canada flights from Portland, Maine to Portugal

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

Air Canada

Oct 2

PWM9:10 amPortland

17h 00m

3 stops

OPO7:10 amPorto

Oct 9

OPO9:00 amPorto

19h 28m

3 stops

PWM11:28 pmPortland

$1,438

Air Canada

Aug 27

PWM10:45 amPortland

17h 35m

3 stops

LIS9:20 amLisbon Humberto Delgado

Sep 19

LIS11:25 amLisbon Humberto Delgado

26h 43m

3 stops

PWM9:08 amPortland

$1,589

Air Canada

Aug 27

PWM10:45 amPortland

17h 35m

3 stops

LIS9:20 amLisbon Humberto Delgado

Sep 19

LIS7:40 amLisbon Humberto Delgado

20h 52m

3 stops

PWM11:32 pmPortland

$1,642

Delta flights from Portland, Maine to Portugal

Our best Delta deals on Portland, Maine to Portugal flight tickets

Delta

Oct 19

PWM4:15 pmPortland

18h 10m

2 stops

OPO3:25 pmPorto

Oct 23

OPO11:25 amPorto

17h 45m

2 stops

PWM12:10 amPortland

$778

Delta

Aug 13

PWM6:00 amPortland

21h 30m

2 stops

OPO8:30 amPorto

Aug 20

OPO9:25 amPorto

20h 34m

2 stops

PWM12:59 amPortland

$947

Delta

Aug 13

PWM4:47 pmPortland

20h 03m

2 stops

LIS5:50 pmLisbon Humberto Delgado

Aug 20

LIS5:00 amLisbon Humberto Delgado

24h 59m

2 stops

PWM12:59 amPortland

$948

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortlandPorto

PWM - OPO

PWMOPO

Portland

Mon 10/19

10:43 am-9:45 am

1 stop18h 02m

Porto

Fri 10/23

8:40 am-11:28 pm

2 stops19h 48m

$774

PortlandPorto

PWM - OPO

PWMOPO

Portland

Mon 10/19

4:15 pm-3:25 pm

2 stops18h 10m

Porto

Fri 10/23

11:25 am-12:10 am

2 stops17h 45m

$778

Quickest round-trip

PortlandPorto

PWM - OPO

PWMOPO

Portland

Mon 10/19

6:55 pm-9:45 am

1 stop9h 50m

Porto

Fri 10/23

12:35 pm-11:28 pm

1 stop15h 53m

$781

PortlandPorto

PWM - OPO

PWMOPO

Portland

Tue 10/13

7:57 am-9:45 am

1 stop20h 48m

Porto

Sun 10/18

11:20 am-2:38 pm

2 stops56h 18m

$833

PortlandPorto

PWM - OPO

PWMOPO

Portland

Tue 10/13

6:00 am-7:00 am

2 stops20h 00m

Porto

Sun 10/18

6:00 am-11:59 pm

2 stops22h 59m

$837

PortlandLisbon

PWM - LIS

PWMLIS

Portland

Tue 8/11

2:53 pm-10:45 am

2 stops14h 52m

Lisbon Humberto Delgado

Tue 8/18

7:45 pm-4:01 pm

2 stops25h 16m

$888

PortlandPorto

PWM - OPO

PWMOPO

Portland

Fri 10/2

6:54 pm-9:45 am

1 stop9h 51m

Porto

Fri 10/9

6:00 am-11:28 pm

2 stops22h 28m

$890

PortlandPorto

PWM - OPO

PWMOPO

Portland

Fri 10/2

5:15 am-9:45 am

2 stops23h 30m

Porto

Fri 10/9

6:00 am-11:28 pm

2 stops22h 28m

$894

PortlandLisbon

PWM - LIS

PWMLIS

Portland

Tue 8/11

7:28 am-9:05 am

1 stop20h 37m

Lisbon Humberto Delgado

Tue 8/18

11:05 am-11:41 pm

1 stop17h 36m

$945

PortlandLisbon

PWM - LIS

PWMLIS

Portland

Thu 8/13

3:06 pm-9:05 am

1 stop12h 59m

Lisbon Humberto Delgado

Thu 8/20

11:05 am-11:41 pm

1 stop17h 36m

$955

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 14 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

Fastest flight time	8h 25m
Direct flights	None

The fastest flight from Portland, Maine to Portugal takes 8h 25m

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 July 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 9,909 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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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 $175

Flights to Portofrom $457

Flights to Funchalfrom $588

Flights to Farofrom $542

Flights to Ponta Delgadafrom $567

Flights to Lajesfrom $562

Flights to Hortafrom $825

Flights to Pico Islandfrom $845

Flights to Porto Santofrom $669

Flights to Velasfrom $580

Cheap flights from Portland, Maine to Portugal from $606

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 7/24. 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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Air Canada flights from Portland, Maine to Portugal

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

Delta flights from Portland, Maine to Portugal

Our best Delta 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

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

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