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Cheap flights from Maine to Portugal from $199

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Maine to Portugal departing on 10/21. 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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Find the cheapest flights from Maine to Portugal

Cheap round-trip flights

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Aer Lingus Logo
5:10 pm - 10:30 amBOS-FAO
12h 20m1 stop
Aer Lingus Logo
11:10 am - 6:55 pmFAO-BOS
12h 45m1 stop
$417Aer Lingus
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Sat, Nov 29 - Sat, Dec 6
American Airlines Logo
12:03 pm - 7:40 amBOS-OPO
14h 37m2 stops
American Airlines Logo
12:25 pm - 10:54 pmOPO-BOS
15h 29m2 stops
$439American Airlines
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Fri, Dec 5 - Fri, Dec 12
Multiple Airlines Logo
8:50 pm - 10:30 amBOS-OPO
32h 40m1 stop
Multiple Airlines Logo
11:20 am - 10:33 pmOPO-BOS
16h 13m2 stops
$441Multiple Airlines
Find Deal
Mon, Dec 29 - Thu, Jan 8
Multiple Airlines Logo
6:40 pm - 11:40 amBOS-OPO
36h 00m2 stops
Multiple Airlines Logo
9:10 am - 8:20 pmOPO-BOS
40h 10m2 stops
$442Multiple Airlines
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Tue, Nov 4 - Mon, Nov 17
SWISS Logo
9:50 pm - 11:15 amBOS-OPO
32h 25m1 stop
SWISS Logo
12:05 pm - 8:20 pmOPO-BOS
13h 15m1 stop
$444SWISS
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Tue, Nov 4 - Tue, Nov 11
Delta Logo
8:20 pm - 10:30 amBOS-OPO
33h 10m1 stop
Delta Logo
6:30 am - 6:55 pmOPO-BOS
17h 25m1 stop
$445Delta
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Thu, Jan 1 - Fri, Jan 9
Delta Logo
6:05 am - 10:25 pmBOS-OPO
35h 20m2 stops
Delta Logo
6:35 am - 11:21 amOPO-BOS
33h 46m2 stops
$446Delta
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Wed, Dec 31 - Thu, Jan 8
SWISS Logo
9:50 pm - 11:10 amBOS-OPO
32h 20m1 stop
SWISS Logo
9:10 am - 8:20 pmOPO-BOS
40h 10m2 stops
$447SWISS
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Thu, Nov 13 - Mon, Nov 17
United Airlines Logo
6:24 pm - 9:30 amBOS-OPO
10h 06m1 stop
United Airlines Logo
12:30 pm - 8:00 pmOPO-BOS
36h 30m2 stops
$449United Airlines
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Sun, Nov 30 - Sun, Dec 7
United Airlines Logo
12:25 pm - 9:30 amBOS-OPO
16h 05m2 stops
United Airlines Logo
12:30 pm - 9:27 pmOPO-BOS
37h 57m2 stops
$453United Airlines
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Thu, Nov 13 - Tue, Nov 18

Aer Lingus flights from Maine to Portugal

Our best Aer Lingus deals on Maine to Portugal flight tickets
Aer Lingus
Nov 29
BOS5:10 pmBoston Logan Intl
12h 20m
1 stop
FAO10:30 amFaro
Dec 6
FAO11:10 amFaro
12h 45m
1 stop
BOS6:55 pmBoston Logan Intl
$417
Find similar
Aer Lingus
Nov 24
BOS5:10 pmBoston Logan Intl
12h 20m
1 stop
FAO10:30 amFaro
Dec 7
FAO11:10 amFaro
12h 45m
1 stop
BOS6:55 pmBoston Logan Intl
$450
Find similar
Aer Lingus
Nov 24
BOS5:10 pmBoston Logan Intl
12h 20m
1 stop
FAO10:30 amFaro
Dec 7
FAO11:10 amFaro
12h 45m
1 stop
BOS6:55 pmBoston Logan Intl
$451
Find similar

TAP AIR PORTUGAL flights from Maine to Portugal

Our best TAP AIR PORTUGAL deals on Maine to Portugal flight tickets
TAP AIR PORTUGAL
Dec 12
BOS10:45 pmBoston Logan Intl
15h 15m
1 stop
OPO7:00 pmPorto
Dec 17
OPO8:55 amPorto
10h 40m
1 stop
BOS2:35 pmBoston Logan Intl
$455
Find similar
TAP AIR PORTUGAL
Dec 13
BOS10:25 pmBoston Logan Intl
14h 40m
1 stop
OPO6:05 pmPorto
Feb 7
OPO11:00 amPorto
14h 10m
1 stop
BOS8:10 pmBoston Logan Intl
$475
Find similar
TAP AIR PORTUGAL
Nov 8
BOS10:25 pmBoston Logan Intl
6h 30m
LIS9:55 amLisbon Humberto Delgado
Dec 6
LIS11:40 amLisbon Humberto Delgado
7h 55m
BOS2:35 pmBoston Logan Intl
$487
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Maine to Portugal that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated October 16, 2025.
Use the filters below to find and compare flights from Maine to Portugal that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

BostonFaro

BOS - FAO

BOSFAO

Boston Logan Intl

Sat 11/29

5:10 pm-10:30 am

1 stop12h 20m

Faro

Sat 12/6

11:10 am-6:55 pm

1 stop12h 45m

$417

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Fri 12/5

12:03 pm-7:40 am

2 stops14h 37m

Porto

Fri 12/12

12:25 pm-10:54 pm

2 stops15h 29m

$439

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Mon 12/29

8:50 pm-10:30 am

1 stop32h 40m

Porto

Thu 1/8

11:20 am-10:33 pm

2 stops16h 13m

$441

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Tue 11/4

6:40 pm-11:40 am

2 stops36h 00m

Porto

Mon 11/17

9:10 am-8:20 pm

2 stops40h 10m

$442

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Tue 11/4

9:50 pm-11:15 am

1 stop32h 25m

Porto

Tue 11/11

12:05 pm-8:20 pm

1 stop13h 15m

$444

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Thu 1/1

8:20 pm-10:30 am

1 stop33h 10m

Porto

Fri 1/9

6:30 am-6:55 pm

1 stop17h 25m

$445

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Wed 12/31

6:05 am-10:25 pm

2 stops35h 20m

Porto

Thu 1/8

6:35 am-11:21 am

2 stops33h 46m

$446

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Thu 11/13

9:50 pm-11:10 am

1 stop32h 20m

Porto

Mon 11/17

9:10 am-8:20 pm

2 stops40h 10m

$447

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Sun 11/30

6:24 pm-9:30 am

1 stop10h 06m

Porto

Sun 12/7

12:30 pm-8:00 pm

2 stops36h 30m

$449

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Thu 11/13

12:25 pm-9:30 am

2 stops16h 05m

Porto

Tue 11/18

12:30 pm-9:27 pm

2 stops37h 57m

$453

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Portugal from

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

What is the cheapest month to fly to Portugal?

The cheapest month to fly to Portugal from Maine is in February. Flight prices, which tend to average around $641, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of February, then book flights to Portugal from Maine during January instead. Flights to Portugal in January, while not as cheap as those in February, still average around $651.

What is the cheapest day to depart on your flight to Portugal?

According to our data, Sunday is the cheapest day to fly to Portugal from Maine. The lowest ticket price found for a Sunday departure recently was $681. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. The most expensive day to fly to Portugal is Thursday, with ticket prices averaging around $1,357.

What is the cheapest time of day to depart on your flight to Portugal?

Our most recent data shows that the best time of day to fly to Portugal is in the evening. Flights from Maine to Portugal during this time can be as low as $722. In the afternoon is when there is more demand to fly to Portugal, so prices are often more expensive at around $1,096 per ticket.

How far in advance should I book a flight to Portugal?

You are more likely to see cheaper flights to Portugal from Maine when booking weeks ahead of your departure date. In general, you can expect to find flights to Portugal for around $784 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Portugal from Maine for as low as $710 on momondo.

Cheap Maine to Portugal flight deals and tips

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

Fastest flight time

4h 55m

Direct flights

Every day

Airports in Portugal

3 airports
The fastest flight from Maine to Portugal takes 4h 55m
Direct flights go from Maine to Portugal every day.
There are 3 airports near Portugal: Lajes (TER), Lisbon Humberto Delgado (LIS), Ponta Delgada Nordela (PDL)
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  • 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?

  • 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 AirlinesPriceFrom $578Free CancellationRating
7.4
8,982 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.

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Find better results for your trip to Portugal

Popular cities in Portugal

Popular flights according to clicks in the last 7 days on momondo
Flights to Lisbonfrom $331
Flights to Portofrom $343
Flights to Funchalfrom $415
Flights to Farofrom $419
Flights to Ponta Delgadafrom $430
Flights to Lajesfrom $477
Flights to Hortafrom $592
Flights to Pico Islandfrom $556
Flights to Porto Santofrom $425
Flights to Velasfrom $573