HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Portugal

$242+ Cheap flights from Maine to Portugal

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/27. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — LIS
abr. 12 — abr. 191
dom. 4/12
dom. 4/19
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Maine to Portugal with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Maine to Portugal

Cheapest flights from Maine to Portugal
Explore the most affordable flight options available from Maine to Portugal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on marzo 13, 2026.

This Kiwi.com deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 4/139:40 pm
BOS
-
FAO
1 stop15h 40m
Multiple Airlines
lun. 4/203:55 pm
FAO
-
BOS
1 stop30h 45m
Multiple Airlines
Deal found 3/13$387
This oojo deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 11/1510:10 pm
BOS
-
OPO
1 stop13h 50m
TAP AIR PORTUGAL
lun. 11/235:55 pm
OPO
-
BOS
1 stop25h 45m
TAP AIR PORTUGAL
Deal found 3/12$413
This KAYAK deal was found by Cheapflights users on 3/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 11/178:40 pm
BOS
-
FAO
1 stop11h 40m
Lufthansa
mié. 12/22:10 pm
FAO
-
BOS
1 stop33h 25m
Lufthansa
Deal found 3/11$422
This FlightHub deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 11/166:00 pm
BOS
-
OPO
1 stop14h 05m
TAP AIR PORTUGAL
lun. 11/238:00 pm
OPO
-
BOS
1 stop23h 40m
TAP AIR PORTUGAL
Deal found 3/12$429
This Trip.com deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 5/410:45 pm
BOS
-
OPO
1 stop13h 15m
TAP AIR PORTUGAL
jue. 5/2112:35 pm
OPO
-
BOS
1 stop12h 45m
TAP AIR PORTUGAL
Deal found 3/10$431
This Super.com deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 11/1510:10 pm
BOS
-
OPO
1 stop9h 50m
TAP AIR PORTUGAL
dom. 11/228:55 am
OPO
-
BOS
1 stop10h 45m
TAP AIR PORTUGAL
Deal found 3/12$432
This KAYAK deal was found by Cheapflights users on 3/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 11/178:40 pm
BOS
-
FAO
1 stop11h 40m
Lufthansa
jue. 11/261:25 pm
FAO
-
BOS
1 stop28h 45m
Lufthansa
Deal found 3/11$440
This Super.com deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 5/410:45 pm
BOS
-
OPO
1 stop15h 15m
TAP AIR PORTUGAL
jue. 5/1411:00 am
OPO
-
BOS
1 stop14h 20m
TAP AIR PORTUGAL
Deal found 3/10$442
This oojo deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 5/410:45 pm
BOS
-
OPO
1 stop13h 15m
TAP AIR PORTUGAL
mié. 5/209:00 am
OPO
-
BOS
1 stop10h 45m
TAP AIR PORTUGAL
Deal found 3/10$443
This oojo deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 3/2910:40 pm
BOS
-
OPO
1 stop11h 20m
TAP AIR PORTUGAL
vie. 4/105:05 am
OPO
-
BOS
1 stop20h 15m
TAP AIR PORTUGAL
Deal found 3/12$448
This Super.com deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 5/410:45 pm
BOS
-
OPO
1 stop20h 55m
TAP AIR PORTUGAL
lun. 5/1110:30 pm
OPO
-
BOS
1 stop26h 50m
TAP AIR PORTUGAL
Deal found 3/10$449
This oojo deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 10/287:00 pm
BOS
-
OPO
1 stop19h 00m
TAP AIR PORTUGAL
mié. 11/46:00 pm
OPO
-
BOS
1 stop31h 10m
TAP AIR PORTUGAL
Deal found 3/9$450

Find flight deals from Maine to Portugal

Keep the following information in mind while searching for Maine to Portugal flight deals. Data was last updated marzo 13, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$387
(Kiwi.com)

One-way from

$242
(oojo)

Popular in

December

Cheapest in

February

Average price

$678
Provider with most accurate pricing for Portland-Lisbon Humberto Delgado flight deals.
Search Deals
Provider most trusted by Cheapflights users for Portland-Lisbon Humberto Delgado flights.
Search Deals
From Maine to Portugal
Search Deals
One-way flight from Maine to Portugal
Search Deals
Highest demand for flights based on searches. 35% potential increase in price ($696 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 40% potential price decrease ($368 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated marzo 13, 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

lun. 4/27

7:05 pm-3:25 pm

1 stop15h 20m

Porto

vie. 5/8

9:25 am-11:37 pm

2 stops19h 12m

$495

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

lun. 5/11

8:10 pm-8:05 pm

1 stop18h 55m

Porto

mié. 5/20

8:20 am-10:54 pm

2 stops19h 34m

$544

BostonFaro

BOS - FAO

BOSFAO

Boston Logan Intl

mar. 5/12

3:32 pm-11:20 am

2 stops14h 48m

Faro

jue. 5/21

11:40 am-5:57 pm

1 stop11h 17m

$557

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

mié. 4/8

5:45 pm-3:40 pm

1 stop16h 55m

Porto

mié. 4/15

6:00 am-9:59 pm

2 stops20h 59m

$573

BostonPorto Santo

BOS - PXO

BOSPXO

Boston Logan Intl

dom. 5/3

6:05 pm-11:10 am

1 stop12h 05m

Porto Santo

lun. 5/11

12:00 pm-8:20 pm

1 stop13h 20m

$576

BostonFaro

BOS - FAO

BOSFAO

Boston Logan Intl

dom. 4/12

8:05 pm-3:05 pm

1 stop14h 00m

Faro

dom. 4/19

3:25 pm-3:40 pm

1 stop29h 15m

$597

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

lun. 5/11

9:50 pm-3:40 pm

1 stop36h 50m

Lisbon Humberto Delgado

mar. 5/19

5:55 am-7:55 pm

1 stop19h 00m

$602

BostonVila do Porto

BOS - SMA

BOSSMA

Boston Logan Intl

mié. 4/8

9:15 pm-2:40 pm

1 stop13h 25m

Vila do Porto Santa Maria

mié. 4/15

7:25 am-7:50 pm

1 stop16h 25m

$624

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

mié. 3/25

9:05 am-10:30 am

2 stops21h 25m

Porto

mié. 4/1

11:45 am-4:25 pm

1 stop33h 40m

$644

BostonLajes

BOS - TER

BOSTER

Boston Logan Intl

lun. 8/31

10:45 pm-11:15 pm

1 stop20h 30m

Lajes

mié. 9/16

2:10 pm-2:45 pm

1 stop28h 35m

$650

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/10

Showing 1-10 of 60 resultsSorted by cheapest first
1
2
3
...
6

Best time to book a flight from Maine to Portugal

Have a flexible travel schedule? Discover the best time to fly to Portugal from Maine with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Maine to Portugal
No data available for this route at this time. Please check back soon.

Related info for your journey

Find useful and relevant information for your journey from Maine to Portugal. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Maine to Portugal?

    For as low as $557, Delta can have you in Portugal from Maine in 14h 48m. Maine and Portugal are separated by a distance of 3293 mi. This flight may include one or multiple stops.

  • Can I find deals for flights from Maine to Portugal that include hotel bookings?

    Yes. In addition to deals on Maine to Portugal flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Maine to Portugal?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Maine to Portugal.

  • Can I find deals for business class flights from Maine to Portugal?

    Yes. Cheapflights offers flight deals from Maine to Portugal by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Maine to Portugal

See prices for flight routes from nearby airports that may be better suited for you.
John F Kennedy Intl to Heathrow flights
John F Kennedy Intl to Charles de Gaulle flights
Newark to Heathrow flights
Newark to Charles de Gaulle flights
John F Kennedy Intl to Leonardo da Vinci/Fiumicino flights
Newark to Leonardo da Vinci/Fiumicino flights
John F Kennedy Intl to Gatwick flights
Newark to Orly flights
John F Kennedy Intl to Madrid flights
Boston to Heathrow flights
LaGuardia to Heathrow flights
John F Kennedy Intl to Barcelona-El Prat flights
John F Kennedy Intl to Lisbon flights
John F Kennedy Intl to Orly flights
Dulles Intl to Heathrow flights
Newark to Gatwick flights
Newark to Athens flights
John F Kennedy Intl to London City flights
Los Angeles to Heathrow flights
Newark to Barcelona-El Prat flights
Newark to Lisbon flights
Newark to Madrid flights
Newark to Dublin flights
John F Kennedy Intl to Dublin flights
John F Kennedy Intl to Istanbul flights
John F Kennedy Intl to Athens flights
Boston to Charles de Gaulle flights
O'Hare Intl to Leonardo da Vinci/Fiumicino flights
Miami to Madrid flights
John F Kennedy Intl to Malpensa flights
O'Hare Intl to Heathrow flights
Newark to Malpensa flights
Baltimore to Heathrow flights
Dallas/Fort Worth to Heathrow flights
San Francisco to Heathrow flights
John F Kennedy Intl to Frederic Chopin flights
Boston to Leonardo da Vinci/Fiumicino flights
Los Angeles to Charles de Gaulle flights
Seattle to Heathrow flights
O'Hare Intl to Charles de Gaulle flights
Dulles Intl to Leonardo da Vinci/Fiumicino flights
Boston to Gatwick flights
Dulles Intl to Charles de Gaulle flights
LaGuardia to Gatwick flights
Newark to Amsterdam flights

Top airline flying from Maine to Portugal

Discover the top airline that operate flights from Maine to Portugal. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated marzo 13, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$550Average$721FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.