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Portugal

$217+ 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 11/30. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — LIS
Dec 20 — Dec 271
Sat 12/20
Sat 12/27
1 adult, Economy
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Cheap flight deals from Maine to Portugal

Keep the following information in mind while searching for Maine to Portugal flight deals. Data was last updated November 20, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$386
(oojo)

One-way from

$217
(Kiwi.com)

Popular in

December

Cheapest in

February

Average price

$728
Provider with most accurate pricing for Portland-Lisbon Humberto Delgado flight deals.
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Provider most trusted by Cheapflights users for Portland-Lisbon Humberto Delgado flights.
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From Maine to Portugal
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One-way flight from Maine to Portugal
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Highest demand for flights based on searches. 47% potential increase in price ($1,337 potential increase over avg. RT price).
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Cheapest flight prices on average. 62% potential price decrease ($555 potential savings vs. average RT price).
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Average for round-trip flights in November 2025
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Find 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 November 20, 2025.

This Air France deal was found by Cheapflights users on 11/18. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/318:25 pmBOS - OPO
1 stop33h 00mMultiple Airlines
Wed 1/146:00 amOPO - BOS
1 stop17h 55mMultiple Airlines
Deal found 11/18$396
This Orbitz deal was found by Cheapflights users on 11/18. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/26:40 pmBOS - OPO
2 stops36h 25mMultiple Airlines
Wed 12/107:20 pmOPO - BOS
2 stops32h 17mMultiple Airlines
Deal found 11/18$398
This Orbitz deal was found by Cheapflights users on 11/18. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/316:55 pmBOS - OPO
1 stop16h 50mBritish Airways
Wed 1/1412:25 pmOPO - BOS
2 stops15h 31mBritish Airways
Deal found 11/18$399
This Air France deal was found by Cheapflights users on 11/19. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/268:50 pmBOS - OPO
1 stop32h 40mKLM
Tue 12/24:10 pmOPO - BOS
1 stop26h 10mKLM
Deal found 11/19$407
This TAP AIR PORTUGAL deal was found by Cheapflights users on 11/19. 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 TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/216:05 pmBOS - OPO
1 stop11h 55mTAP AIR PORTUGAL
Fri 11/289:00 amOPO - BOS
1 stop10h 35mTAP AIR PORTUGAL
Deal found 11/19$409
This CheapOair deal was found by Cheapflights users on 11/19. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/33:40 pmBOS - OPO
2 stops15h 25mMultiple Airlines
Wed 12/106:00 amOPO - BOS
2 stops17h 48mMultiple Airlines
Deal found 11/19$413
This Cheapflightsfares deal was found by Cheapflights users on 11/20. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/294:45 pmBOS - OPO
1 stop9h 55mIberia
Fri 12/1212:25 pmOPO - BOS
1 stop12h 25mIberia
Deal found 11/20$415
This Mytrip deal was found by Cheapflights users on 11/19. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/2810:15 amBOS - OPO
2 stops20h 50mMultiple Airlines
Mon 12/87:20 pmOPO - BOS
1 stop30h 00mMultiple Airlines
Deal found 11/19$420
This oojo deal was found by Cheapflights users on 11/18. 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.
Sat 11/2910:25 pmBOS - OPO
1 stop13h 35mTAP AIR PORTUGAL
Fri 12/1212:00 pmOPO - BOS
1 stop13h 10mTAP AIR PORTUGAL
Deal found 11/18$421
This Mytrip deal was found by Cheapflights users on 11/18. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/45:30 amBOS - OPO
2 stops25h 10mMultiple Airlines
Mon 12/87:20 pmOPO - BOS
1 stop30h 00mMultiple Airlines
Deal found 11/18$431
This Mytrip deal was found by Cheapflights users on 11/18. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/95:10 pmBOS - FAO
1 stop14h 55mMultiple Airlines
Sun 12/1410:15 amFAO - BOS
1 stop13h 40mMultiple Airlines
Deal found 11/18$486
This Mytrip deal was found by Cheapflights users on 11/18. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/14:20 pmBOS - LIS
2 stops15h 55mMultiple Airlines
Sat 12/69:45 pmLIS - BOS
2 stops23h 12mMultiple Airlines
Deal found 11/18$492

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 November 20, 2025.
Use the filters below to find and compare flights from Maine to Portugal that are best for you.

Fly from

Maine

Fly to

Portugal

Route

Depart

Return

Price

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Wed 1/14

8:40 pm-1:15 pm

1 stop11h 35m

Porto

Thu 1/22

12:05 pm-8:20 pm

1 stop13h 15m

$388

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Tue 1/13

6:30 pm-10:30 am

1 stop11h 00m

Porto

Wed 1/21

11:15 am-6:55 pm

1 stop12h 40m

$395

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Mon 1/12

1:00 pm-10:30 am

2 stops16h 30m

Porto

Wed 1/21

11:25 am-10:21 pm

2 stops15h 56m

$399

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Mon 1/12

12:00 pm-10:30 am

2 stops17h 30m

Porto

Thu 1/22

6:35 am-1:30 pm

1 stop11h 55m

$399

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Tue 1/13

1:00 pm-10:30 am

2 stops16h 30m

Porto

Fri 1/23

6:30 am-6:55 pm

1 stop17h 25m

$399

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Tue 1/13

10:05 am-10:30 am

2 stops19h 25m

Porto

Tue 1/20

11:15 am-1:30 pm

1 stop31h 15m

$399

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Wed 12/31

3:30 pm-4:45 pm

2 stops20h 15m

Porto

Wed 1/14

12:25 pm-10:56 pm

2 stops15h 31m

$404

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Wed 12/3

8:50 pm-10:30 am

1 stop32h 40m

Porto

Wed 12/10

11:15 am-1:20 pm

1 stop31h 05m

$407

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Thu 1/15

10:10 pm-11:10 am

1 stop32h 00m

Porto

Tue 1/20

12:05 pm-8:20 pm

1 stop13h 15m

$430

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Fri 1/30

4:45 pm-11:45 am

1 stop14h 00m

Porto

Fri 2/6

12:25 pm-10:56 pm

2 stops15h 31m

$435

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/19

Showing 1-10 of 60 results
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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

What is the cheapest time of day to fly from ME to PT?

Find hourly flight availability from Maine to Portugal. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 20, 2025.

It’s typically best to fly out from Maine to Portugal in the evening. Doing so could potentially save you 41% on the flight price compared to flying in the morning, which is usually more expensive.

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 $395, Delta can have you in Portugal from Maine in 11h. Maine and Portugal are separated by a distance of 3134 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from Maine to Portugal one-way?

    For one-way options, check prices for TAP AIR PORTUGAL. According to our data, you can fly for as low as $219. Users have also found prices from $297 and $312 on Azores Airlines and LEVEL, respectively.

  • 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

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Alternative routes for Maine to Portugal

See prices for flight routes from nearby airports that may be better suited for you.
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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 November 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$578Average$778FlexibilityNo cancel feeOn-time69%

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