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

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

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

There is 1 operator available for flights from Maine to Portugal as of September 2026.

How old do you have to be to fly from Maine to Portugal?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Maine to Portugal.

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

The travel and health documents you'll need for your trip to Portugal may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Portugal. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$706 Cheap Flights from Maine to Portugal in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Maine to Portugal

Round-trip

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

3:40 pm - 9:30 amPWM Portland-OPO Porto

12h 50m1 stop Newark

6:00 am - 9:51 pmOPO Porto-PWM Portland

20h 51m2 stops Frankfurt am Main Chicago O'Hare Intl

$706United Airlines

Wed, Nov 11 - Wed, Nov 18

3:40 pm - 8:10 amPWM Portland-LIS Lisbon Humberto Delgado

11h 30m1 stop Newark

5:00 am - 7:02 pmLIS Lisbon Humberto Delgado-PWM Portland

19h 02m2 stops Frankfurt am Main Washington, D.C. Dulles Intl

$713United Airlines

Wed, Nov 11 - Wed, Nov 18

3:40 pm - 9:30 amPWM Portland-OPO Porto

12h 50m1 stop Newark

12:35 pm - 6:49 pmOPO Porto-PWM Portland

11h 14m1 stop Newark

$715United Airlines

Wed, Nov 11 - Wed, Nov 18

3:40 pm - 8:10 amPWM Portland-LIS Lisbon Humberto Delgado

11h 30m1 stop Newark

11:55 am - 7:02 pmLIS Lisbon Humberto Delgado-PWM Portland

12h 07m1 stop Washington, D.C. Dulles Intl

$726United Airlines

Wed, Nov 11 - Wed, Nov 18

2:05 pm - 8:10 amPWM Portland-LIS Lisbon Humberto Delgado

13h 05m2 stops Washington, D.C. Dulles Intl Newark

10:15 am - 9:51 pmLIS Lisbon Humberto Delgado-PWM Portland

16h 36m2 stops Newark Chicago O'Hare Intl

$730United Airlines

Wed, Nov 11 - Wed, Nov 18

9:12 am - 9:30 amPWM Portland-OPO Porto

19h 18m1 stop Newark

12:30 pm - 8:42 pmOPO Porto-PWM Portland

37h 12m2 stops Frankfurt am Main Newark

$738United Airlines

Sun, Dec 6 - Mon, Dec 14

9:47 am - 9:30 amPWM Portland-OPO Porto

18h 43m2 stops Washington, D.C. Dulles Intl Newark

12:30 pm - 7:12 pmOPO Porto-PWM Portland

35h 42m2 stops Frankfurt am Main Washington, D.C. Dulles Intl

$742United Airlines

Sun, Dec 6 - Mon, Dec 14

8:49 am - 8:10 amPWM Portland-LIS Lisbon Humberto Delgado

18h 21m1 stop Newark

10:55 am - 9:52 pmLIS Lisbon Humberto Delgado-PWM Portland

39h 57m2 stops Toronto Pearson Intl Chicago O'Hare Intl

$761United Airlines

Thu, Nov 12 - Thu, Nov 19

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

22h 20m2 stops Newark Toronto Pearson Intl

10:40 am - 9:48 pmLIS Lisbon Humberto Delgado-PWM Portland

40h 08m2 stops Montreal Pierre Elliott Trudeau Intl Newark

$769Air Canada

Sun, Jan 17 - Sun, Jan 24

4:03 pm - 8:00 amPWM Portland-LIS Lisbon Humberto Delgado

10h 57m1 stop New York John F Kennedy Intl

10:00 am - 12:19 amLIS Lisbon Humberto Delgado-PWM Portland

19h 19m1 stop New York John F Kennedy Intl

$776KLM

Thu, Nov 12 - Thu, Nov 19

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Air Canada flights from Maine to Portugal

Our best Air Canada deals on Maine to Portugal flight tickets

Air Canada

Jan 17

PWM6:00 amPortland

22h 20m

2 stops

LIS9:20 amLisbon Humberto Delgado

Jan 24

LIS10:40 amLisbon Humberto Delgado

40h 08m

2 stops

PWM9:48 pmPortland

$769

Air Canada

Jan 17

PWM8:55 amPortland

19h 25m

3 stops

LIS9:20 amLisbon Humberto Delgado

Jan 24

LIS10:40 amLisbon Humberto Delgado

26h 39m

3 stops

PWM8:19 amPortland

$1,018

Air Canada

Dec 6

PWM3:20 pmPortland

19h 00m

3 stops

OPO3:20 pmPorto

Dec 14

OPO7:00 amPorto

21h 24m

3 stops

PWM11:24 pmPortland

$2,084

Delta flights from Maine to Portugal

Our best Delta deals on Maine to Portugal flight tickets

Delta

Oct 25

BGR2:38 pmBangor

16h 47m

2 stops

LIS11:25 amLisbon Humberto Delgado

Oct 30

LIS12:25 pmLisbon Humberto Delgado

31h 05m

2 stops

BGR3:30 pmBangor

$1,156

Delta

Dec 20

BGR3:19 pmBangor

11h 41m

1 stop

LIS8:00 amLisbon Humberto Delgado

Dec 27

LIS5:00 amLisbon Humberto Delgado

38h 39m

2 stops

BGR2:39 pmBangor

$1,283

Delta

Oct 25

BGR2:38 pmBangor

16h 47m

2 stops

LIS11:25 amLisbon Humberto Delgado

Oct 30

LIS12:25 pmLisbon Humberto Delgado

31h 05m

2 stops

BGR3:30 pmBangor

$1,368

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortlandPorto

PWM Portland - OPO Porto

PWMOPO

Portland

Wed 11/11

3:40 pm-9:30 am

1 stop12h 50m

Porto

Wed 11/18

6:00 am-9:51 pm

2 stops20h 51m

$706

PortlandLisbon

PWM Portland - LIS Lisbon Humberto Delgado

PWMLIS

Portland

Wed 11/11

3:40 pm-8:10 am

1 stop11h 30m

Lisbon Humberto Delgado

Wed 11/18

5:00 am-7:02 pm

2 stops19h 02m

$713

PortlandPorto

PWM Portland - OPO Porto

PWMOPO

Portland

Wed 11/11

3:40 pm-9:30 am

1 stop12h 50m

Porto

Wed 11/18

12:35 pm-6:49 pm

1 stop11h 14m

$715

Quickest round-trip

PortlandLisbon

PWM Portland - LIS Lisbon Humberto Delgado

PWMLIS

Portland

Wed 11/11

3:40 pm-8:10 am

1 stop11h 30m

Lisbon Humberto Delgado

Wed 11/18

11:55 am-7:02 pm

1 stop12h 07m

$726

PortlandLisbon

PWM Portland - LIS Lisbon Humberto Delgado

PWMLIS

Portland

Wed 11/11

2:05 pm-8:10 am

2 stops13h 05m

Lisbon Humberto Delgado

Wed 11/18

10:15 am-9:51 pm

2 stops16h 36m

$730

PortlandPorto

PWM Portland - OPO Porto

PWMOPO

Portland

Sun 12/6

9:12 am-9:30 am

1 stop19h 18m

Porto

Mon 12/14

12:30 pm-8:42 pm

2 stops37h 12m

$738

PortlandPorto

PWM Portland - OPO Porto

PWMOPO

Portland

Sun 12/6

9:47 am-9:30 am

2 stops18h 43m

Porto

Mon 12/14

12:30 pm-7:12 pm

2 stops35h 42m

$742

PortlandLisbon

PWM Portland - LIS Lisbon Humberto Delgado

PWMLIS

Portland

Thu 11/12

8:49 am-8:10 am

1 stop18h 21m

Lisbon Humberto Delgado

Thu 11/19

10:55 am-9:52 pm

2 stops39h 57m

$761

PortlandLisbon

PWM Portland - LIS Lisbon Humberto Delgado

PWMLIS

Portland

Sun 1/17

6:00 am-9:20 am

2 stops22h 20m

Lisbon Humberto Delgado

Sun 1/24

10:40 am-9:48 pm

2 stops40h 08m

$769

PortlandLisbon

PWM Portland - LIS Lisbon Humberto Delgado

PWMLIS

Portland

Thu 11/12

4:03 pm-8:00 am

1 stop10h 57m

Lisbon Humberto Delgado

Thu 11/19

10:00 am-12:19 am

1 stop19h 19m

$776

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

How to get the cheapest flight ticket from 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

Can stopping save me money on Maine to Portugal flights?

You could potentially save up to 5% on your flight if you consider stops on a Maine to Portugal flight.

Cheap Maine to Portugal flight deals and tips

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

Best Price Found	$706
Fastest flight time	4h 55m
Direct flights	None

The best flight deal from Maine to Portugal found on momondo in the last 72 hours is $706

The fastest flight from Maine to Portugal takes 4h 55m

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

Search flight deals

Frequently asked questions about flying from Maine to Portugal

When did momondo last update prices for flights from Maine to Portugal?
Prices for flights from Maine to Portugal are refreshed on a daily basis.
How many operators does momondo search for flights from Maine to Portugal?
There is 1 operator available for flights from Maine to Portugal as of September 2026.
How old do you have to be to fly from Maine to Portugal?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Maine to Portugal.
What documentation or ID do you need to fly to Portugal?
The travel and health documents you'll need for your trip to Portugal may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Portugal. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Maine to Portugal

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

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom $550	Free Cancellation	Rating 7.4 10,261 reviews		Search United Airlines flights

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Maine to Portugal. Millions of users trust and use momondo every year so you are in good hands.

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

momondo does allow users to show only those flights to Portugal from Maine which offer a flexible booking policy as well as other useful filters and features.

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

Once you have performed a search for Maine 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 Maine to Portugal right now. Can momondo alert me if prices change?

Price alerts on flights to Portugal from Maine are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your Portugal trip

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Popular cities

Other flights from Maine

Other flights to Portugal

Airlines

Cabin classes

Complete your trip

Feeling lucky

Popular cities in Portugal

Flights to Lisbonfrom $397

Flights to Portofrom $406

Flights to Funchalfrom $406

Flights to Farofrom $411

Flights to Ponta Delgadafrom $406

Flights to Lajesfrom $556

Flights to Hortafrom $743

Flights to Pico Islandfrom $691

Flights to Porto Santofrom $883

Flights to Velasfrom $574

Cheap flights from Maine to Portugal from $706

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Maine to Portugal departing on 11/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Find the cheapest flights from Maine to Portugal

Cheap round-trip flights

Cheap last minute flights

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Air Canada flights from Maine to Portugal

Our best Air Canada deals on Maine to Portugal flight tickets

Delta flights from Maine to Portugal

Our best Delta deals on Maine to Portugal flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from Maine to Portugal that are best for you.

See travel insights to Portugal from

How to get the cheapest flight ticket from Maine to Portugal

Can stopping save me money on Maine to Portugal flights?

Cheap Maine to Portugal flight deals and tips

Best Price Found

Fastest flight time

Direct flights

Frequently asked questions about flying from Maine to Portugal

Best airlines flying from Maine to Portugal

Compare and see reviews for airlines that fly from 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

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