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Portugal

$236+ 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 9/21. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — LIS
May 6 — May 131
Tue 5/6
Tue 5/13
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 May 1, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$519
(Cheapflightsfares)

One-way from

$236
(oojo)

Popular in

May

Cheapest in

February

Average price

$1,357
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 ($316 potential increase over avg. RT price).
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Cheapest flight prices on average. 7% potential price decrease ($56 potential savings vs. average RT price).
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Average for round-trip flights in May 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 May 1, 2025.

This oojo deal was found by Cheapflights users on 4/29. 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 4/29$500
This Iberia deal was found by Cheapflights users on 4/29. 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.
Sun 9/2111:00 pmBOS - LIS
1 stop13h 05mIberia
Sun 9/289:10 amLIS - BOS
1 stop17h 05mIberia
Deal found 4/29$542
This Scandinavian Airlines deal was found by Cheapflights users on 4/29. 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.
Fri 9/55:40 pmBOS - LIS
1 stop34h 20mScandinavian Airlines
Mon 11/34:55 pmLIS - BOS
1 stop27h 55mScandinavian Airlines
Deal found 4/29$546
This FlightHub deal was found by Cheapflights users on 4/30. 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.
Wed 5/1411:35 pmBOS - LIS
1 stop16h 45mIcelandair
Sun 5/1810:25 pmLIS - BOS
1 stop25h 25mIcelandair
Deal found 4/30$548
This Vueling Global deal was found by Cheapflights users on 4/29. 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 Vueling Global is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2311:00 pmBOS - LIS
1 stop16h 35mMultiple Airlines
Thu 10/29:10 amLIS - BOS
1 stop17h 05mMultiple Airlines
Deal found 4/29$560
This SmartFares deal was found by Cheapflights users on 4/29. 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.
Mon 10/139:15 pmBOS - TER
Nonstop5h 05mAzores Airlines
Tue 10/216:05 pmTER - BOS
Nonstop5h 45mAzores Airlines
Deal found 4/29$566
This oojo deal was found by Cheapflights users on 4/30. 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.
Tue 10/710:40 pmBOS - FNC
1 stop21h 35mTAP AIR PORTUGAL
Wed 10/1512:40 pmFNC - BOS
1 stop12h 25mTAP AIR PORTUGAL
Deal found 4/30$568
This Mytrip deal was found by Cheapflights users on 4/29. 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 5/137:15 pmBOS - FAO
2 stops17h 00mMultiple Airlines
Fri 5/1610:00 pmFAO - BOS
2 stops24h 50mMultiple Airlines
Deal found 4/29$568
This oojo deal was found by Cheapflights users on 4/30. 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 11/86:10 pmBOS - FAO
1 stop11h 15mTAP AIR PORTUGAL
Sat 11/156:05 amFAO - BOS
1 stop19h 00mTAP AIR PORTUGAL
Deal found 4/30$570
This Booking.com deal was found by Cheapflights users on 4/29. 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.
Mon 10/136:10 pmBOS - TER
1 stop14h 40mMultiple Airlines
Tue 10/216:05 pmTER - BOS
Nonstop5h 45mMultiple Airlines
Deal found 4/29$572
This American Airlines deal was found by Cheapflights users on 4/29. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/257:25 amBOS - LIS
1 stop10h 45mAmerican Airlines
Sun 10/512:30 pmLIS - BOS
1 stop12h 20mAmerican Airlines
Deal found 4/29$583
This oojo deal was found by Cheapflights users on 4/29. 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.
Fri 11/76:10 pmBOS - LIS
Nonstop6h 30mTAP AIR PORTUGAL
Sun 11/235:10 pmLIS - BOS
Nonstop7h 55mTAP AIR PORTUGAL
Deal found 4/29$585

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 May 1, 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

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Wed 5/14

11:35 pm-9:20 pm

1 stop16h 45m

Lisbon Humberto Delgado

Sun 5/18

10:25 pm-6:50 pm

1 stop25h 25m

$548

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Thu 5/8

4:15 pm-8:35 pm

2 stops23h 20m

Lisbon Humberto Delgado

Wed 5/14

9:10 pm-2:00 pm

2 stops21h 50m

$556

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Sun 5/4

7:15 pm-8:40 pm

1 stop20h 25m

Lisbon Humberto Delgado

Fri 5/9

9:20 pm-5:50 pm

1 stop25h 30m

$564

BostonFunchal

BOS - FNC

BOSFNC

Boston Logan Intl

Tue 10/7

10:40 pm-1:15 am

1 stop21h 35m

Funchal Madeira

Wed 10/15

12:40 pm-8:05 pm

1 stop12h 25m

$568

BostonFaro

BOS - FAO

BOSFAO

Boston Logan Intl

Tue 5/13

7:15 pm-5:15 pm

2 stops17h 00m

Faro

Fri 5/16

10:00 pm-5:50 pm

2 stops24h 50m

$568

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Mon 5/5

10:50 pm-5:05 pm

1 stop13h 15m

Lisbon Humberto Delgado

Wed 5/14

10:05 pm-9:05 pm

1 stop28h 00m

$569

BostonFaro

BOS - FAO

BOSFAO

Boston Logan Intl

Tue 10/7

10:40 pm-11:50 pm

1 stop20h 10m

Faro

Sun 10/19

6:10 pm-8:05 pm

1 stop30h 55m

$577

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Mon 7/28

5:40 pm-5:05 pm

2 stops18h 25m

Lisbon Humberto Delgado

Mon 8/18

8:15 pm-3:35 pm

1 stop24h 20m

$578

BostonLisbon

BOS - LIS

BOSLIS

Boston Logan Intl

Wed 5/28

10:50 pm-8:35 pm

1 stop16h 45m

Lisbon Humberto Delgado

Wed 9/10

2:00 pm-9:15 pm

1 stop12h 15m

$590

BostonFaro

BOS - FAO

BOSFAO

Boston Logan Intl

Fri 8/22

7:15 pm-8:45 pm

1 stop20h 30m

Faro

Sat 8/30

9:45 pm-5:50 pm

1 stop25h 05m

$603

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/30

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 May 1, 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 May 1, 2025.
To help decide which airline to fly from Maine to Portugal, see what other customers have to say about Delta, KLM and Azores Airlines. 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
7,934 reviews

Food

7.3

Comfort

7.9

Crew

8.5

Entertainment

7.9

Overall

8.0

Boarding

8.2

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
7,934 reviews
Delta
8.0
Very good
7,934 reviews

Food

7.3

Comfort

7.9

Crew

8.5

Entertainment

7.9

Overall

8.0

Boarding

8.2

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
1,334 reviews
Delta
8.0
Very good
7,934 reviews

Food

7.3

Comfort

7.9

Crew

8.5

Entertainment

7.9

Overall

8.0

Boarding

8.2

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
7.6
Good
66 reviews
Delta
8.0
Very good
7,934 reviews

Food

7.3

Comfort

7.9

Crew

8.5

Entertainment

7.9

Overall

8.0

Boarding

8.2

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
781 reviews
Delta
8.0
Very good
7,934 reviews

Food

7.3

Comfort

7.9

Crew

8.5

Entertainment

7.9

Overall

8.0

Boarding

8.2

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.
SWISS
7.5
Good
1,588 reviews
Delta
8.0
Very good
7,934 reviews

Food

7.3

Comfort

7.9

Crew

8.5

Entertainment

7.9

Overall

8.0

Boarding

8.2

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 TAP AIR PORTUGAL. According to our data, you can fly for as low as $236. Users have also found prices from $265 and $308 on Azores Airlines and Iberia, 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 $1,178). 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 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 May 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$550Average$981FlexibilityNo cancel feeOn-time69%

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