How long is the flight from Maine to Portugal?

For as low as $420, United Airlines can have you in Portugal from Maine in 9h 30m. 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 $248. Users have also found prices from $251 and $311 on Azores Airlines and United Airlines, respectively.

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 $1,127). 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.

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.

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).

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.

$239+ Cheap Flights from Maine to Portugal

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Cheap flight deals from Maine to Portugal

Round-trip from	$417 (Kiwi.com)
One-way from	$239 (Kiwi.com)
Popular in	May
Cheapest in	February
Average price	$825

From Maine to Portugal

Search Deals

One-way flight from Maine to Portugal

Search Deals

Highest demand for flights based on searches. 31% potential increase in price ($391 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 9% potential price decrease ($72 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in September 2025

Search Deals

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 September 16, 2025.

Fri 11/711:56 amBOS - OPO

2 stops14h 44mAmerican Airlines

Fri 11/148:20 amOPO - BOS

1 stop11h 55mAmerican Airlines

Deal found 9/16

$416

Wed 10/225:05 pmBOS - OPO

1 stop13h 20mMultiple Airlines

Sun 11/96:15 amOPO - BOS

1 stop17h 20mMultiple Airlines

Deal found 9/15

$417

Thu 11/61:30 pmBOS - OPO

1 stop15h 00mMultiple Airlines

Tue 11/1112:05 pmOPO - BOS

1 stop13h 15mMultiple Airlines

Deal found 9/16

$418

Wed 11/54:20 pmBOS - OPO

1 stop18h 05mUnited Airlines

Fri 11/1412:35 pmOPO - BOS

2 stops27h 03mUnited Airlines

Deal found 9/15

$420

Thu 11/1310:15 amBOS - OPO

2 stops19h 55mMultiple Airlines

Tue 12/212:05 pmOPO - BOS

1 stop13h 15mMultiple Airlines

Deal found 9/16

$421

Wed 11/59:50 pmBOS - OPO

1 stop15h 45mSWISS

Tue 11/189:10 amOPO - BOS

2 stops16h 10mSWISS

Deal found 9/15

$422

Thu 10/3012:03 pmBOS - OPO

2 stops15h 37mAmerican Airlines

Tue 11/48:20 amOPO - BOS

1 stop11h 55mAmerican Airlines

Deal found 9/15

$424

Mon 11/39:50 pmBOS - OPO

1 stop32h 25mSWISS

Sun 11/96:35 pmOPO - BOS

2 stops54h 45mSWISS

Deal found 9/15

$425

Sat 10/259:13 pmBOS - OPO

1 stop32h 17mMultiple Airlines

Sun 11/96:15 amOPO - BOS

1 stop17h 20mMultiple Airlines

Deal found 9/14

$427

Mon 11/35:10 pmBOS - FAO

1 stop12h 20mAer Lingus

Sun 11/1611:10 amFAO - BOS

1 stop12h 45mAer Lingus

Deal found 9/14

$427

Thu 11/65:30 amBOS - OPO

2 stops23h 00mUnited Airlines

Wed 11/1212:35 pmOPO - BOS

2 stops26h 59mUnited Airlines

Deal found 9/14

$428

Mon 11/105:10 pmBOS - FAO

1 stop12h 20mAer Lingus

Tue 11/2511:10 amFAO - BOS

1 stop12h 45mAer Lingus

Deal found 9/15

$432

Best flights from Maine to Portugal
Discover carefully curated flight deals from Maine to Portugal that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 16, 2025.

Thu 11/61:30 pmBOS - OPO

1 stop15h 00mMultiple Airlines

Tue 11/1112:05 pmOPO - BOS

1 stop13h 15mMultiple Airlines

Deal found 9/16

$418

Wed 3/118:00 pmBOS - OPO

1 stop9h 30mUnited Airlines

Fri 4/1012:35 pmOPO - BOS

1 stop12h 38mUnited Airlines

Deal found 9/16

$420

Mon 11/105:10 pmBOS - FAO

1 stop12h 20mAer Lingus

Tue 11/2511:10 amFAO - BOS

1 stop12h 45mAer Lingus

Deal found 9/15

$432

Sun 2/16:05 pmBOS - FAO

1 stop11h 20mTAP AIR PORTUGAL

Sat 2/711:15 amFAO - BOS

1 stop13h 55mTAP AIR PORTUGAL

Deal found 9/15

$475

Mon 12/12:30 pmPWM - LIS

1 stop13h 30mKLM

Mon 12/810:00 amLIS - PWM

1 stop18h 59mKLM

Deal found 9/16

$527

Mon 11/179:50 pmBOS - LIS

1 stop32h 35mSWISS

Sun 11/301:35 pmLIS - BOS

2 stops35h 45mSWISS

Deal found 9/15

$544

Fri 11/75:35 pmBOS - LIS

1 stop34h 20mScandinavian Airlines

Mon 11/175:20 pmLIS - BOS

1 stop27h 30mScandinavian Airlines

Deal found 9/14

$559

Thu 10/3012:45 pmPWM - LIS

2 stops21h 50mDelta

Thu 11/610:00 amLIS - PWM

1 stop19h 05mDelta

Deal found 9/15

$572

Sat 1/319:20 pmBOS - PDL

Nonstop4h 55mAzores Airlines

Tue 2/38:30 amPDL - BOS

2 stops15h 35mAzores Airlines

Deal found 9/13

$721

Sun 3/88:00 pmBOS - OPO

1 stop9h 30mUnited Airlines

Thu 4/912:35 pmOPO - BOS

1 stop12h 38mUnited Airlines

Deal found 9/16

$420

Sun 11/96:25 pmBOS - OPO

1 stop10h 05mMultiple Airlines

Sun 11/166:15 amOPO - BOS

1 stop17h 20mMultiple Airlines

Deal found 9/15

$422

Tue 3/106:30 pmBOS - OPO

1 stop11h 00mUnited Airlines

Fri 4/1012:35 pmOPO - BOS

1 stop12h 38mUnited Airlines

Deal found 9/16

$420

Thu 11/1310:40 amBOS - OPO

2 stops17h 50mMultiple Airlines

Tue 12/212:05 pmOPO - BOS

1 stop13h 15mMultiple Airlines

Deal found 9/14

$423

Sun 2/16:05 pmBOS - FAO

1 stop16h 40mTAP AIR PORTUGAL

Sun 3/16:05 amFAO - BOS

1 stop13h 30mTAP AIR PORTUGAL

Deal found 9/15

$475

Wed 3/118:00 pmBOS - OPO

1 stop9h 30mUnited Airlines

Thu 4/912:35 pmOPO - BOS

1 stop12h 38mUnited Airlines

Deal found 9/16

$420

Tue 10/76:45 pmBOS - FAO

1 stop31h 55mKLM

Thu 10/168:20 pmFAO - BOS

1 stop25h 10mKLM

Deal found 9/14

$541

Tue 10/75:30 pmBOS - FAO

1 stop12h 00mAer Lingus

Thu 10/1611:45 amFAO - BOS

1 stop12h 00mAer Lingus

Deal found 9/16

$555

Tue 3/1010:44 amBOS - OPO

2 stops18h 46mUnited Airlines

Wed 4/812:35 pmOPO - BOS

1 stop10h 38mUnited Airlines

Deal found 9/16

$424

Mon 11/106:05 pmBOS - TER

1 stop12h 55mTAP AIR PORTUGAL

Mon 11/176:40 amTER - BOS

1 stop11h 55mTAP AIR PORTUGAL

Deal found 9/15

$529

Mon 12/12:30 pmPWM - LIS

2 stops19h 05mDelta

Mon 12/85:30 amLIS - PWM

2 stops23h 29mDelta

Deal found 9/16

$583

Wed 10/18:15 pmBOS - FAO

1 stop18h 15mKLM

Tue 10/77:55 pmFAO - BOS

1 stop22h 45mKLM

Deal found 9/14

$541

Wed 11/59:20 pmBOS - FAO

1 stop15h 00mMultiple Airlines

Mon 11/1010:15 amFAO - BOS

1 stop13h 40mMultiple Airlines

Deal found 9/14

$493

Wed 1/286:05 pmBOS - FNC

1 stop11h 05mTAP AIR PORTUGAL

Sat 2/78:45 amFNC - BOS

2 stops16h 25mTAP AIR PORTUGAL

Deal found 9/15

$535

Wed 10/14:50 pmBOS - FAO

1 stop21h 40mKLM

Thu 10/98:30 amFAO - BOS

1 stop13h 00mKLM

Deal found 9/14

$541

Wed 10/156:10 pmBOS - FNC

2 stops21h 45mTAP AIR PORTUGAL

Mon 10/208:55 amFNC - BOS

1 stop16h 50mTAP AIR PORTUGAL

Deal found 9/16

$536

Sat 10/42:41 pmPWM - LIS

2 stops19h 09mDelta

Wed 10/225:00 amLIS - PWM

2 stops24h 05mDelta

Deal found 9/15

$653

Wed 10/228:00 amBOS - LIS

2 stops20h 20mUnited Airlines

Wed 10/296:10 amLIS - BOS

1 stop17h 25mUnited Airlines

Deal found 9/15

$498

Thu 10/235:00 pmBOS - LIS

1 stop10h 00mKLM

Sun 11/25:00 amLIS - BOS

1 stop13h 20mKLM

Deal found 9/15

$551

Mon 11/105:30 amBOS - TER

3 stops30h 05mMultiple Airlines

Mon 11/1712:35 pmTER - BOS

3 stops35h 45mMultiple Airlines

Deal found 9/15

$557

Mon 10/136:10 pmBOS - TER

1 stop25h 05mTAP AIR PORTUGAL

Tue 12/211:50 amTER - BOS

1 stop30h 45mTAP AIR PORTUGAL

Deal found 9/14

$538

Last-minute flights from Maine to Portugal
Discover last-minute flight deals from Maine to Portugal. Data last updated September 16, 2025 and is based on user searches.

Mon 9/296:00 amBOS - OPO

2 stops22h 35mMultiple Airlines

Mon 12/812:55 pmOPO - BOS

2 stops30h 57mMultiple Airlines

Deal found 9/15

$437

Tue 10/145:05 pmBOS - OPO

1 stop33h 40mSWISS

Wed 10/228:40 amOPO - BOS

1 stop16h 15mSWISS

Deal found 9/14

$430

Tue 10/145:05 pmBOS - OPO

1 stop13h 25mSWISS

Tue 10/218:40 amOPO - BOS

1 stop16h 15mSWISS

Deal found 9/15

$431

Tue 10/145:05 pmBOS - OPO

1 stop13h 25mSWISS

Tue 10/287:25 pmOPO - BOS

1 stop29h 55mSWISS

Deal found 9/14

$432

Tue 10/147:25 pmBOS - OPO

1 stop15h 05mDelta

Thu 10/236:30 amOPO - BOS

1 stop12h 10mDelta

Deal found 9/14

$438

Wed 10/155:05 pmBOS - OPO

1 stop13h 20mSWISS

Thu 10/307:25 pmOPO - BOS

1 stop29h 55mSWISS

Deal found 9/14

$428

Wed 10/156:00 amBOS - OPO

2 stops31h 30mAir Canada

Wed 10/226:15 amOPO - BOS

2 stops44h 10mAir Canada

Deal found 9/15

$433

Wed 10/155:05 pmBOS - OPO

1 stop13h 20mSWISS

Fri 10/248:40 amOPO - BOS

1 stop11h 45mSWISS

Deal found 9/14

$436

Wed 10/225:05 pmBOS - OPO

1 stop13h 20mMultiple Airlines

Sun 11/96:15 amOPO - BOS

1 stop17h 20mMultiple Airlines

Deal found 9/15

$417

Fri 10/245:40 pmBOS - FNC

1 stop18h 15mScandinavian Airlines

Sat 11/84:10 pmFNC - BOS

1 stop28h 40mScandinavian Airlines

Deal found 9/14

$445

Sat 10/259:13 pmBOS - OPO

1 stop32h 17mMultiple Airlines

Sun 11/96:15 amOPO - BOS

1 stop17h 20mMultiple Airlines

Deal found 9/14

$427

Thu 10/3012:03 pmBOS - OPO

2 stops15h 37mAmerican Airlines

Tue 11/48:20 amOPO - BOS

1 stop11h 55mAmerican Airlines

Deal found 9/15

$424

One-way flights from Maine to Portugal
Search for one-way flight options from Maine to Portugal. Find affordable one-way fares based on user searches. Data last updated September 16, 2025.

Sun 9/2111:00 pmBOS - OPO

1 stop27h 00mMultiple Airlines

Deal found 9/14

$239

Wed 10/1511:00 pmBOS - OPO

1 stop26h 45mMultiple Airlines

Deal found 9/15

$240

Mon 9/224:00 pmBOS - OPO

3 stops24h 50mMultiple Airlines

Deal found 9/16

$241

Sat 10/1111:15 pmBOS - FAO

2 stops54h 35mMultiple Airlines

Deal found 9/15

$245

Tue 11/186:05 pmBOS - PDL

1 stop10h 15mTAP AIR PORTUGAL

Deal found 9/14

$247

Mon 9/2211:15 pmBOS - OPO

Nonstop6h 40mTAP AIR PORTUGAL

Deal found 9/16

$247

Sat 10/411:15 pmBOS - OPO

Nonstop6h 40mTAP AIR PORTUGAL

Deal found 9/14

$248

Mon 3/911:40 pmBOS - OPO

2 stops15h 50mMultiple Airlines

Deal found 9/14

$249

Fri 9/2611:45 amBOS - PDL

Nonstop5h 05mAzores Airlines

Deal found 9/15

$251

Mon 11/249:15 pmBOS - TER

Nonstop4h 55mAzores Airlines

Deal found 9/15

$251

Mon 11/176:05 pmBOS - PDL

1 stop10h 10mTAP AIR PORTUGAL

Deal found 9/14

$253

Mon 10/206:10 pmBOS - TER

1 stop25h 05mTAP AIR PORTUGAL

Deal found 9/14

$253

Fly from

Fly to

Route

Depart

Return

Price

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Thu 11/6

1:30 pm-9:30 am

1 stop15h 00m

Porto

Tue 11/11

12:05 pm-8:20 pm

1 stop13h 15m

$418

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Wed 3/11

8:00 pm-9:30 am

1 stop9h 30m

Porto

Fri 4/10

12:35 pm-8:13 pm

1 stop12h 38m

$420

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Sun 3/8

8:00 pm-9:30 am

1 stop9h 30m

Porto

Thu 4/9

12:35 pm-8:13 pm

1 stop12h 38m

$420

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Tue 3/10

6:30 pm-9:30 am

1 stop11h 00m

Porto

Fri 4/10

12:35 pm-8:13 pm

1 stop12h 38m

$420

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Wed 3/11

8:00 pm-9:30 am

1 stop9h 30m

Porto

Thu 4/9

12:35 pm-8:13 pm

1 stop12h 38m

$420

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Sun 11/9

6:25 pm-9:30 am

1 stop10h 05m

Porto

Sun 11/16

6:15 am-6:35 pm

1 stop17h 20m

$422

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Thu 11/13

10:40 am-9:30 am

2 stops17h 50m

Porto

Tue 12/2

12:05 pm-8:20 pm

1 stop13h 15m

$423

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Tue 3/10

10:44 am-9:30 am

2 stops18h 46m

Porto

Wed 4/8

12:35 pm-6:13 pm

1 stop10h 38m

$424

BostonFaro

BOS - FAO

BOSFAO

Boston Logan Intl

Mon 11/10

5:10 pm-10:30 am

1 stop12h 20m

Faro

Tue 11/25

11:10 am-6:55 pm

1 stop12h 45m

$432

BostonFaro

BOS - FAO

BOSFAO

Boston Logan Intl

Sun 2/1

6:05 pm-10:25 am

1 stop11h 20m

Faro

Sat 2/7

11:15 am-8:10 pm

1 stop13h 55m

$475

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Showing 1-10 of 60 results

...

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?

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.

Related info for your journey

How long is the flight from Maine to Portugal?
For as low as $420, United Airlines can have you in Portugal from Maine in 9h 30m. 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 $248. Users have also found prices from $251 and $311 on Azores Airlines and United Airlines, 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 $1,127). 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

Browse thousands of different options on Cheapflights for your next trip

Top airline flying from Maine to Portugal

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$578	Average$777	FlexibilityNo cancel fee	On-time69%

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$239+ 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.

Find cheap flights from Maine to Portugal with Cheapflights

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3. Compare prices and book

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 September 16, 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Maine to Portugal

Cheapest flights from Maine to PortugalExplore 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 September 16, 2025.

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 September 16, 2025.

Cheapflights Fare Finder

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

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.

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 September 16, 2025.

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?

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

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

How can I find direct flights from Maine to Portugal?

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

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

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.

Top airline flying from Maine to Portugal

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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 September 16, 2025.