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Cheap flights from Maine to Portugal from $299

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 5/26. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Maine to Portugal

Cheap round-trip flights

Enter your travel dates to find the best prices.
KLM Logo
3:34 pm - 8:05 am
BOS
-
OPO
12h 31m
1 stop
KLM Logo
11:00 am - 10:26 pm
OPO
-
BOS
16h 26m
1 stop
$646KLM
Fri, Oct 30 - Thu, Nov 5
United Airlines Logo
5:45 am - 7:00 am
BOS
-
OPO
20h 15m
1 stop
United Airlines Logo
2:25 pm - 9:50 am
OPO
-
BOS
24h 25m
1 stop
$648United Airlines
Mon, Aug 10 - Wed, Aug 19
Multiple Airlines Logo
5:45 am - 7:00 am
BOS
-
OPO
20h 15m
1 stop
Multiple Airlines Logo
8:40 am - 3:10 pm
OPO
-
BOS
11h 30m
1 stop
$649Multiple Airlines
Mon, Jul 6 - Fri, Sep 4
Scandinavian Airlines Logo
5:40 pm - 5:05 pm
BOS
-
OPO
18h 25m
1 stop
Scandinavian Airlines Logo
5:55 pm - 3:35 pm
OPO
-
BOS
26h 40m
1 stop
$650Scandinavian Airlines
Sat, Aug 15 - Fri, Aug 21
United Airlines Logo
9:50 am - 9:30 am
BOS
-
OPO
18h 40m
2 stops
United Airlines Logo
12:35 pm - 1:02 am
OPO
-
BOS
17h 27m
2 stops
$651United Airlines
Tue, Nov 3 - Mon, Nov 9
Multiple Airlines Logo
9:35 am - 6:50 am
BOS
-
OPO
16h 15m
2 stops
Multiple Airlines Logo
9:10 am - 8:20 pm
OPO
-
BOS
16h 10m
2 stops
$654Multiple Airlines
Sun, Jul 12 - Tue, Nov 10
TAP AIR PORTUGAL Logo
10:20 pm - 12:55 pm
BOS
-
TER
10h 35m
1 stop
TAP AIR PORTUGAL Logo
7:10 am - 8:20 pm
TER
-
BOS
17h 10m
1 stop
$656TAP AIR PORTUGAL
Thu, Oct 15 - Fri, Oct 23
Air Canada Logo
12:30 pm - 7:00 am
BOS
-
OPO
13h 30m
2 stops
Air Canada Logo
12:45 pm - 8:44 am
OPO
-
BOS
24h 59m
2 stops
$657Air Canada
Mon, Oct 12 - Wed, Oct 21
TAP AIR PORTUGAL Logo
10:20 pm - 12:55 pm
BOS
-
TER
10h 35m
1 stop
TAP AIR PORTUGAL Logo
6:10 pm - 8:20 pm
TER
-
BOS
30h 10m
1 stop
$671TAP AIR PORTUGAL
Thu, Oct 15 - Fri, Oct 23
Scandinavian Airlines Logo
5:35 pm - 2:10 pm
BOS
-
FNC
15h 35m
1 stop
Scandinavian Airlines Logo
3:55 pm - 3:40 pm
FNC
-
BOS
52h 45m
2 stops
$675Scandinavian Airlines
Mon, Nov 2 - Tue, Nov 17

Turkish Airlines flights from Maine to Portugal

Our best Turkish Airlines deals on Maine to Portugal flight tickets
Turkish Airlines
Sep 1
BOS9:50 pmBoston Logan Intl
36h 45m
1 stop
LIS3:35 pmLisbon Humberto Delgado
Sep 28
LIS5:55 amLisbon Humberto Delgado
19h 00m
1 stop
BOS7:55 pmBoston Logan Intl
$768
Turkish Airlines
Sep 1
BOS9:50 pmBoston Logan Intl
36h 45m
1 stop
LIS3:35 pmLisbon Humberto Delgado
Sep 8
LIS5:55 amLisbon Humberto Delgado
19h 00m
1 stop
BOS7:55 pmBoston Logan Intl
$773

LEVEL flights from Maine to Portugal

Our best LEVEL deals on Maine to Portugal flight tickets
LEVEL
Jun 7
BOS11:30 pmBoston Logan Intl
29h 15m
1 stop
FAO9:45 amFaro
Jun 23
FAO10:20 amFaro
15h 40m
1 stop
BOS9:00 pmBoston Logan Intl
$734
LEVEL
Jul 5
BOS11:35 pmBoston Logan Intl
27h 55m
1 stop
LIS8:30 amLisbon Humberto Delgado
Jul 15
LIS7:05 pmLisbon Humberto Delgado
31h 40m
1 stop
BOS9:45 pmBoston Logan Intl
$779
LEVEL
May 16
BOS10:50 pmBoston Logan Intl
28h 40m
1 stop
LIS8:30 amLisbon Humberto Delgado
May 21
LIS7:05 pmLisbon Humberto Delgado
31h 00m
1 stop
BOS9:05 pmBoston Logan Intl
$882

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 May 12, 2026.
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

Cheapest round-trip

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Fri 10/30

3:34 pm-8:05 am

1 stop12h 31m

Porto

Thu 11/5

11:00 am-10:26 pm

1 stop16h 26m

$646

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Mon 8/10

5:45 am-7:00 am

1 stop20h 15m

Porto

Wed 8/19

2:25 pm-9:50 am

1 stop24h 25m

$648

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Mon 7/6

5:45 am-7:00 am

1 stop20h 15m

Porto

Fri 9/4

8:40 am-3:10 pm

1 stop11h 30m

$649

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Sat 8/15

5:40 pm-5:05 pm

1 stop18h 25m

Porto

Fri 8/21

5:55 pm-3:35 pm

1 stop26h 40m

$650

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Tue 11/3

9:50 am-9:30 am

2 stops18h 40m

Porto

Mon 11/9

12:35 pm-1:02 am

2 stops17h 27m

$651

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Sun 7/12

9:35 am-6:50 am

2 stops16h 15m

Porto

Tue 11/10

9:10 am-8:20 pm

2 stops16h 10m

$654
Quickest round-trip

BostonLajes

BOS - TER

BOSTER

Boston Logan Intl

Thu 10/15

10:20 pm-12:55 pm

1 stop10h 35m

Lajes

Fri 10/23

7:10 am-8:20 pm

1 stop17h 10m

$656

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Mon 10/12

12:30 pm-7:00 am

2 stops13h 30m

Porto

Wed 10/21

12:45 pm-8:44 am

2 stops24h 59m

$657

BostonLajes

BOS - TER

BOSTER

Boston Logan Intl

Thu 10/15

10:20 pm-12:55 pm

1 stop10h 35m

Lajes

Fri 10/23

6:10 pm-8:20 pm

1 stop30h 10m

$671

BostonFunchal

BOS - FNC

BOSFNC

Boston Logan Intl

Mon 11/2

5:35 pm-2:10 pm

1 stop15h 35m

Funchal Madeira

Tue 11/17

3:55 pm-3:40 pm

2 stops52h 45m

$675

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 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 Maine during May instead. Flights to Portugal in May, while not as cheap as those in June, still average around $0.

Can stopping save me money on Maine to Portugal flights?

You could potentially save up to 32% 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

Fastest flight time

4h 55m

Direct flights

Mon, Wed, Thu, Fri, Sat and Sun

Airports in Portugal

99 airports
The fastest flight from Maine to Portugal takes 4h 55m
Direct flights go from Maine to Portugal on Monday, Wednesday, Thursday, Friday, Saturday and Sunday. There are no airlines offering direct flights.
There are 99 airports in Portugal. From Maine there are direct flights to Ponta Delgada Nordela (PDL).
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?

  • 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 $550Free CancellationRating
7.4
9,701 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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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 $435
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Flights to Funchalfrom $552
Flights to Farofrom $622
Flights to Ponta Delgadafrom $542
Flights to Lajesfrom $601
Flights to Pico Islandfrom $699
Flights to Hortafrom $777
Flights to Porto Santofrom $921
Flights to Velasfrom $744