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Cheap flights from Maine to Portugal from $151

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 10/15. 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

Logo
4:30 pm - 7:35 amBOS-OPO
10h 05m1 stop
Logo
8:20 am - 3:15 pmOPO-BOS
11h 55m1 stop
$340
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mar., oct. 21 - mar., nov. 4
Iberia Logo
9:20 pm - 11:40 amBOS-OPO
9h 20m1 stop
Iberia Logo
12:25 pm - 7:50 pmOPO-BOS
12h 25m1 stop
$341Iberia
Find Deal
mié., oct. 22 - mié., nov. 5
British Airways Logo
9:20 pm - 3:55 pmBOS-OPO
13h 35m1 stop
British Airways Logo
12:20 pm - 7:50 pmOPO-BOS
12h 30m1 stop
$364British Airways
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mar., oct. 14 - mar., oct. 21
British Airways Logo
9:20 pm - 3:55 pmBOS-OPO
13h 35m1 stop
British Airways Logo
12:20 pm - 7:50 pmOPO-BOS
12h 30m1 stop
$365British Airways
Find Deal
mar., oct. 14 - mar., oct. 21
SWISS Logo
9:50 pm - 6:35 pmBOS-OPO
15h 45m1 stop
SWISS Logo
12:05 pm - 8:20 pmOPO-BOS
13h 15m1 stop
$373SWISS
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mié., nov. 5 - mar., nov. 11
United Airlines Logo
9:40 am - 9:30 amBOS-OPO
18h 50m2 stops
United Airlines Logo
12:35 pm - 11:42 pmOPO-BOS
16h 07m2 stops
$378United Airlines
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mié., nov. 5 - jue., nov. 13
United Airlines Logo
4:19 pm - 9:30 amBOS-OPO
12h 11m1 stop
United Airlines Logo
6:00 am - 1:25 pmOPO-BOS
12h 25m1 stop
$380United Airlines
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dom., nov. 23 - jue., dic. 4
Icelandair Logo
11:35 pm - 9:20 pmBOS-LIS
16h 45m1 stop
Icelandair Logo
9:20 pm - 5:50 pmLIS-BOS
25h 30m1 stop
$380Icelandair
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mié., oct. 22 - jue., nov. 6
SWISS Logo
9:50 pm - 11:15 amBOS-OPO
32h 25m1 stop
SWISS Logo
12:05 pm - 8:20 pmOPO-BOS
13h 15m1 stop
$383SWISS
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mar., nov. 4 - jue., nov. 13
Icelandair Logo
8:50 pm - 8:20 pmBOS-LIS
19h 30m1 stop
Icelandair Logo
10:20 pm - 6:50 pmLIS-BOS
25h 30m1 stop
$393Icelandair
Find Deal
mié., oct. 29 - jue., abr. 9

Icelandair flights from Maine to Portugal

Our best Icelandair deals on Maine to Portugal flight tickets
Icelandair
Oct 22
BOS11:35 pmBoston Logan Intl
16h 45m
1 stop
LIS9:20 pmLisbon Humberto Delgado
Nov 6
LIS9:20 pmLisbon Humberto Delgado
25h 30m
1 stop
BOS5:50 pmBoston Logan Intl
$380
Find similar
Icelandair
Oct 29
BOS8:50 pmBoston Logan Intl
19h 30m
1 stop
LIS8:20 pmLisbon Humberto Delgado
Apr 9
LIS10:20 pmLisbon Humberto Delgado
25h 30m
1 stop
BOS6:50 pmBoston Logan Intl
$393
Find similar
Icelandair
Nov 29
BOS7:50 pmBoston Logan Intl
19h 30m
1 stop
LIS8:20 pmLisbon Humberto Delgado
Dec 4
LIS9:20 pmLisbon Humberto Delgado
25h 30m
1 stop
BOS5:50 pmBoston Logan Intl
$403
Find similar

Scandinavian Airlines flights from Maine to Portugal

Our best Scandinavian Airlines deals on Maine to Portugal flight tickets
Scandinavian Airlines
Nov 30
BOS5:35 pmBoston Logan Intl
17h 30m
1 stop
LIS4:05 pmLisbon Humberto Delgado
Dec 7
LIS4:55 pmLisbon Humberto Delgado
27h 55m
1 stop
BOS3:50 pmBoston Logan Intl
$425
Find similar
Scandinavian Airlines
Nov 6
BOS5:35 pmBoston Logan Intl
17h 30m
1 stop
LIS4:05 pmLisbon Humberto Delgado
Nov 10
LIS4:55 pmLisbon Humberto Delgado
27h 55m
1 stop
BOS3:50 pmBoston Logan Intl
$433
Find similar
Scandinavian Airlines
Nov 20
BOS5:35 pmBoston Logan Intl
17h 30m
1 stop
LIS4:05 pmLisbon Humberto Delgado
Nov 26
LIS4:55 pmLisbon Humberto Delgado
27h 55m
1 stop
BOS3:50 pmBoston Logan Intl
$435
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 agosto 11, 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

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

mar. 10/21

4:30 pm-7:35 am

1 stop10h 05m

Porto

mar. 11/4

8:20 am-3:15 pm

1 stop11h 55m

$340

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

mié. 10/22

9:20 pm-11:40 am

1 stop9h 20m

Porto

mié. 11/5

12:25 pm-7:50 pm

1 stop12h 25m

$341

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

mar. 10/14

9:20 pm-3:55 pm

1 stop13h 35m

Porto

mar. 10/21

12:20 pm-7:50 pm

1 stop12h 30m

$364

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

mar. 10/14

9:20 pm-3:55 pm

1 stop13h 35m

Porto

mar. 10/21

12:20 pm-7:50 pm

1 stop12h 30m

$365

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

mié. 11/5

9:50 pm-6:35 pm

1 stop15h 45m

Porto

mar. 11/11

12:05 pm-8:20 pm

1 stop13h 15m

$373

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

mié. 11/5

9:40 am-9:30 am

2 stops18h 50m

Porto

jue. 11/13

12:35 pm-11:42 pm

2 stops16h 07m

$378

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

dom. 11/23

4:19 pm-9:30 am

1 stop12h 11m

Porto

jue. 12/4

6:00 am-1:25 pm

1 stop12h 25m

$380

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

mié. 10/22

11:35 pm-9:20 pm

1 stop16h 45m

Lisbon Humberto Delgado

jue. 11/6

9:20 pm-5:50 pm

1 stop25h 30m

$380

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

mar. 11/4

9:50 pm-11:15 am

1 stop32h 25m

Porto

jue. 11/13

12:05 pm-8:20 pm

1 stop13h 15m

$383

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

mié. 10/29

8:50 pm-8:20 pm

1 stop19h 30m

Lisbon Humberto Delgado

jue. 4/9

10:20 pm-6:50 pm

1 stop25h 30m

$393

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 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.

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

$151

Fastest flight time

4h 55m

Direct flights

Every day

Airports in Portugal

8 airports
The best one-way flight to Portugal from Maine in the past 72 hours is $151. The best round-trip flight deal from Maine to Portugal found on momondo in the last 72 hours is $340.
The fastest flight from Maine to Portugal takes 4h 55m
Direct flights go from Maine to Portugal every day.
There are 8 airports near Portugal: Lajes (TER), Lisbon Humberto Delgado (LIS), Ponta Delgada Nordela (PDL), Horta (HOR), Funchal Madeira (FNC), Santa Cruz da Graciosa Graciosa Island (GRW), Pico Island (PIX), Porto (OPO)
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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
8,920 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 $367
Flights to Portofrom $339
Flights to Funchalfrom $401
Flights to Farofrom $412
Flights to Ponta Delgadafrom $442
Flights to Lajesfrom $561
Flights to Hortafrom $590
Flights to Pico Islandfrom $593
Flights to Porto Santofrom $583
Flights to Velasfrom $557