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Portugal

$249+ 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 9/15. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — LIS
Apr 27 — May 41
Sun 4/27
Sun 5/4
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 April 22, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$435
(Mytrip)

One-way from

$249
(Booking.com)

Popular in

May

Cheapest in

February

Average price

$981
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. 27% potential increase in price ($321 potential increase over avg. RT price).
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Cheapest flight prices on average. 7% potential price decrease ($57 potential savings vs. average RT price).
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Average for round-trip flights in April 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 April 22, 2025.

This Mytrip deal was found by Cheapflights users on 4/22. 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 5/97:15 pmBOS - FAO
1 stop20h 30mPLAY
Sat 5/179:45 pmFAO - BOS
1 stop25h 05mPLAY
Deal found 4/22$391
This Mytrip deal was found by Cheapflights users on 4/21. 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 5/57:15 pmBOS - FNC
1 stop14h 40mPLAY
Tue 5/203:55 pmFNC - BOS
1 stop30h 55mPLAY
Deal found 4/21$462
This oojo deal was found by Cheapflights users on 4/22. 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.
Mon 10/610:40 pmBOS - TER
1 stop20h 35mTAP AIR PORTUGAL
Mon 10/207:05 amTER - BOS
1 stop17h 00mTAP AIR PORTUGAL
Deal found 4/22$501
This Iberia deal was found by Cheapflights users on 4/22. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/611:00 pmBOS - LIS
1 stop13h 05mIberia
Mon 9/152:00 pmLIS - BOS
1 stop12h 15mIberia
Deal found 4/22$545
This oojo deal was found by Cheapflights users on 4/22. 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.
Wed 10/2211:05 pmBOS - FNC
1 stop16h 50mTAP AIR PORTUGAL
Thu 10/307:50 amFNC - BOS
1 stop17h 15mTAP AIR PORTUGAL
Deal found 4/22$545
This Scandinavian Airlines deal was found by Cheapflights users on 4/21. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/25:35 pmBOS - LIS
1 stop17h 30mScandinavian Airlines
Sun 2/14:55 pmLIS - BOS
1 stop27h 55mScandinavian Airlines
Deal found 4/21$547
This Kiwi.com deal was found by Cheapflights users on 4/21. 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.
Tue 9/211:00 pmBOS - LIS
1 stop13h 05mMultiple Airlines
Sun 9/1410:55 amLIS - BOS
1 stop15h 20mMultiple Airlines
Deal found 4/21$548
This Booking.com deal was found by Cheapflights users on 4/21. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/116:10 pmBOS - PDL
1 stop16h 25mTAP AIR PORTUGAL
Sat 10/1810:45 amPDL - BOS
1 stop13h 20mTAP AIR PORTUGAL
Deal found 4/21$558
This SmartFares deal was found by Cheapflights users on 4/21. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/289:15 pmBOS - PDL
Nonstop5h 05mAzores Airlines
Wed 10/86:05 pmPDL - BOS
Nonstop5h 45mAzores Airlines
Deal found 4/21$567
This Kiwi.com deal was found by Cheapflights users on 4/21. 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.
Sun 9/711:00 pmBOS - LIS
1 stop16h 40mVueling
Fri 9/199:10 amLIS - BOS
1 stop17h 05mVueling
Deal found 4/21$568
This Expedia deal was found by Cheapflights users on 4/21. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/2810:20 pmBOS - PDL
1 stop12h 40mMultiple Airlines
Wed 10/86:05 pmPDL - BOS
Nonstop5h 45mMultiple Airlines
Deal found 4/21$571
This oojo deal was found by Cheapflights users on 4/21. 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.
Sun 10/1210:20 pmBOS - LIS
Nonstop6h 30mTAP AIR PORTUGAL
Sat 10/1810:00 pmLIS - BOS
1 stop27h 40mTAP AIR PORTUGAL
Deal found 4/21$578

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 April 22, 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

BostonFaro

BOS - FAO

BOSFAO

Boston Logan Intl

Fri 5/2

7:15 pm-8:45 pm

1 stop20h 30m

Faro

Sat 5/17

9:45 pm-5:50 pm

1 stop25h 05m

$435

BostonFunchal

BOS - FNC

BOSFNC

Boston Logan Intl

Mon 5/5

7:15 pm-2:55 pm

1 stop14h 40m

Funchal Madeira

Tue 5/20

3:55 pm-5:50 pm

1 stop30h 55m

$462

BostonFaro

BOS - FAO

BOSFAO

Boston Logan Intl

Wed 5/7

7:15 pm-9:50 pm

2 stops21h 35m

Faro

Sun 5/11

7:00 am-5:50 pm

2 stops15h 50m

$498

BostonLajes

BOS - TER

BOSTER

Boston Logan Intl

Mon 10/6

10:40 pm-11:15 pm

1 stop20h 35m

Lajes

Mon 10/20

7:05 am-8:05 pm

1 stop17h 00m

$501

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Sat 9/6

11:00 pm-5:05 pm

1 stop13h 05m

Lisbon Humberto Delgado

Mon 9/15

2:00 pm-9:15 pm

1 stop12h 15m

$545

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Tue 9/2

11:00 pm-5:05 pm

1 stop13h 05m

Lisbon Humberto Delgado

Sun 9/14

10:55 am-9:15 pm

1 stop15h 20m

$548

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Sun 9/7

11:00 pm-8:40 pm

1 stop16h 40m

Lisbon Humberto Delgado

Fri 9/19

9:10 am-9:15 pm

1 stop17h 05m

$568

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Sun 10/12

10:20 pm-9:50 am

Nonstop6h 30m

Lisbon Humberto Delgado

Sat 10/18

10:00 pm-8:40 pm

1 stop27h 40m

$578

BostonLajes

BOS - TER

BOSTER

Boston Logan Intl

Mon 10/6

9:15 pm-6:20 am

Nonstop5h 05m

Lajes

Mon 10/20

6:50 am-7:50 pm

1 stop17h 00m

$591

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Tue 9/16

4:45 pm-9:25 am

2 stops35h 40m

Porto

Tue 9/23

12:50 pm-10:39 pm

2 stops14h 49m

$594

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/22

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 April 22, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Maine to Portugal as you normally would.

Rainfall in Portugal by month

Plan your trip to Portugal by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Portugal ranges from 0.2 - 4.8 inches per month. December is typically the wettest month, when rainfall can reach 4.8 in. July is typically the driest time to visit Portugal when rainfall is around 0.2 in.

Temperature in Portugal by month

Plan your trip to Portugal by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Portugal, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 51.8 F).

Reviews of airlines servicing Portugal

Get insights into the airlines that provide service to Portugal. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Portugal. Reviews last updated April 22, 2025.
To help decide which airline to fly from Maine to Portugal, see what other customers have to say about Delta, Porter Airlines and KLM. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,920 reviews

Entertainment

7.9

Crew

8.5

Food

7.3

Boarding

8.2

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,920 reviews
Delta
8.0
Very good
7,920 reviews

Entertainment

7.9

Crew

8.5

Food

7.3

Boarding

8.2

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Porter Airlines
8.0
Very good
284 reviews
Delta
8.0
Very good
7,920 reviews

Entertainment

7.9

Crew

8.5

Food

7.3

Boarding

8.2

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
KLM
7.8
Good
1,331 reviews
Delta
8.0
Very good
7,920 reviews

Entertainment

7.9

Crew

8.5

Food

7.3

Boarding

8.2

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Austrian Airlines
7.6
Good
780 reviews
Delta
8.0
Very good
7,920 reviews

Entertainment

7.9

Crew

8.5

Food

7.3

Boarding

8.2

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Azores Airlines
7.5
Good
65 reviews
Delta
8.0
Very good
7,920 reviews

Entertainment

7.9

Crew

8.5

Food

7.3

Boarding

8.2

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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.

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

    For one-way options, check prices for Azores Airlines. According to our data, you can fly for as low as $249. Users have also found prices from $292 and $302 on Iberia and TAP AIR PORTUGAL, 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.

  • What is the cheapest month to book a flight from Maine to Portugal?

    Currently, January is the cheapest month in which you can book a flight from Maine to Portugal (average of $612). Flying from Maine to Portugal in June is currently the most expensive (average of $1,203). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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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 2 airlines flying from Maine to Portugal

Discover the top 2 airlines 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 April 22, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$550Average$981FlexibilityNo cancel feeOn-time69%
DeltaCheapest$601Average$945FlexibilityNo cancel feeOn-timeN/A

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