How long is the flight from Maine to Portugal?

For as low as $394, American Airlines can have you in Portugal from Maine in 17h 40m. Maine and Portugal are separated by a distance of 3134 mi. This flight may include one or multiple stops.

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.

$210+ Flights from Maine to Portugal

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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 December 8, 2025.

Sat 12/610:25 pmBOS - PDL

1 stop29h 55mTAP AIR PORTUGAL

Sat 12/137:25 pmPDL - BOS

1 stop28h 45mTAP AIR PORTUGAL

Deal found 12/6

$425

Wed 12/107:15 pmBOS - OPO

1 stop16h 30mMultiple Airlines

Tue 1/208:40 pmOPO - BOS

1 stop23h 35mMultiple Airlines

Deal found 12/6

$469

Sun 12/78:40 pmBOS - OPO

2 stops34h 25mMultiple Airlines

Mon 12/227:20 pmOPO - BOS

1 stop30h 00mMultiple Airlines

Deal found 12/6

$509

Sun 12/710:10 pmBOS - OPO

1 stop15h 20mSWISS

Sun 12/1412:05 pmOPO - BOS

1 stop12h 55mSWISS

Deal found 12/6

$547

Mon 12/159:25 pmBOS - PDL

1 stop12h 40mMultiple Airlines

Mon 12/228:05 pmPDL - BOS

1 stop27h 50mMultiple Airlines

Deal found 12/7

$553

Sun 12/78:40 pmBOS - OPO

2 stops34h 25mBrussels Airlines

Mon 12/2212:55 pmOPO - BOS

2 stops34h 40mBrussels Airlines

Deal found 12/6

$556

Sun 12/78:40 pmBOS - OPO

2 stops34h 25mMultiple Airlines

Sun 12/146:15 amOPO - BOS

2 stops17h 33mMultiple Airlines

Deal found 12/6

$560

Thu 12/1112:03 pmBOS - OPO

2 stops38h 37mIberia

Thu 12/1812:25 pmOPO - BOS

1 stop12h 25mIberia

Deal found 12/5

$581

Tue 12/98:25 pmBOS - OPO

1 stop33h 00mKLM

Tue 1/209:55 amOPO - BOS

1 stop32h 35mKLM

Deal found 12/6

$587

Sun 12/710:45 pmBOS - PDL

1 stop29h 30mMultiple Airlines

Sun 12/145:50 pmPDL - BOS

Nonstop6h 10mMultiple Airlines

Deal found 12/6

$593

Tue 12/99:50 pmBOS - OPO

2 stops53h 05mSWISS

Tue 1/209:10 amOPO - BOS

2 stops40h 10mSWISS

Deal found 12/6

$595

Sat 12/139:20 pmBOS - PDL

Nonstop4h 55mAzores Airlines

Sat 12/205:45 pmPDL - BOS

Nonstop6h 10mAzores Airlines

Deal found 12/6

$598

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 December 8, 2025.

Wed 2/2511:35 amBOS - OPO

2 stops17h 55mDelta

Fri 3/135:00 amOPO - BOS

1 stop18h 55mDelta

Deal found 12/6

$399

Wed 4/810:45 pmBOS - PDL

1 stop16h 05mTAP AIR PORTUGAL

Wed 4/1510:45 amPDL - BOS

1 stop14h 00mTAP AIR PORTUGAL

Deal found 12/7

$405

Tue 4/285:25 pmBOS - OPO

1 stop11h 20mUnited Airlines

Thu 5/1412:35 pmOPO - BOS

1 stop10h 38mUnited Airlines

Deal found 12/7

$425

Fri 1/309:20 pmBOS - OPO

1 stop9h 25mMultiple Airlines

Fri 2/612:25 pmOPO - BOS

2 stops15h 31mMultiple Airlines

Deal found 12/7

$435

Thu 1/154:45 pmBOS - OPO

1 stop18h 15mIberia

Tue 1/208:40 pmOPO - BOS

1 stop23h 35mIberia

Deal found 12/7

$436

Sun 3/87:30 pmBOS - OPO

1 stop11h 00mKLM

Sat 3/149:25 amOPO - BOS

1 stop32h 55mKLM

Deal found 12/6

$445

Tue 3/101:55 pmBOS - LIS

2 stops22h 10mScandinavian Airlines

Mon 3/165:20 pmLIS - BOS

2 stops31h 19mScandinavian Airlines

Deal found 12/7

$527

Wed 4/810:50 pmBOS - LIS

1 stop16h 45mLEVEL

Tue 4/1410:10 pmLIS - BOS

1 stop27h 55mLEVEL

Deal found 12/7

$542

Wed 5/139:15 pmBOS - PDL

Nonstop5h 05mAzores Airlines

Sun 5/246:05 pmPDL - BOS

Nonstop5h 45mAzores Airlines

Deal found 12/7

$577

Tue 1/1310:10 pmBOS - FAO

1 stop10h 40mSWISS

Wed 4/86:55 pmFAO - BOS

1 stop25h 35mSWISS

Deal found 12/6

$578

Thu 2/127:30 amBOS - LIS

1 stop21h 25mBritish Airways

Mon 2/163:50 pmLIS - BOS

1 stop32h 55mBritish Airways

Deal found 12/6

$654

Sun 2/811:00 amBOS - OPO

2 stops18h 30mDelta

Tue 2/175:00 amOPO - BOS

1 stop13h 25mDelta

Deal found 12/7

$399

Wed 5/1310:45 pmBOS - PDL

1 stop21h 00mTAP AIR PORTUGAL

Wed 5/2010:45 amPDL - BOS

1 stop14h 00mTAP AIR PORTUGAL

Deal found 12/6

$413

Tue 2/242:20 pmBOS - OPO

2 stops14h 10mUnited Airlines

Mon 3/912:35 pmOPO - BOS

2 stops15h 22mUnited Airlines

Deal found 12/7

$429

Wed 2/1111:30 amBOS - OPO

2 stops18h 00mDelta

Wed 2/2511:25 amOPO - BOS

2 stops17h 01mDelta

Deal found 12/6

$408

Thu 4/3010:45 pmBOS - PDL

1 stop21h 00mTAP AIR PORTUGAL

Mon 5/410:45 amPDL - BOS

1 stop13h 35mTAP AIR PORTUGAL

Deal found 12/6

$413

Wed 4/89:30 amBOS - OPO

2 stops19h 15mUnited Airlines

Wed 4/1512:35 pmOPO - BOS

2 stops16h 29mUnited Airlines

Deal found 12/7

$429

Tue 2/176:30 pmBOS - LIS

1 stop18h 00mMultiple Airlines

Mon 2/2310:00 amLIS - BOS

1 stop17h 48mMultiple Airlines

Deal found 12/7

$520

Wed 4/226:25 pmBOS - OPO

1 stop10h 20mUnited Airlines

Wed 5/66:00 amOPO - BOS

1 stop14h 55mUnited Airlines

Deal found 12/6

$432

Wed 1/148:50 pmBOS - FAO

1 stop16h 25mKLM

Wed 4/88:10 amFAO - BOS

1 stop15h 20mKLM

Deal found 12/6

$534

Thu 2/195:35 pmBOS - LIS

1 stop17h 15mMultiple Airlines

Wed 2/257:05 amLIS - BOS

2 stops20h 46mMultiple Airlines

Deal found 12/7

$522

Mon 1/125:35 pmBOS - FAO

1 stop12h 15mScandinavian Airlines

Wed 4/810:25 amFAO - BOS

2 stops34h 10mScandinavian Airlines

Deal found 12/6

$578

Mon 2/27:10 pmBOS - FNC

1 stop33h 25mKLM

Mon 2/910:25 amFNC - BOS

1 stop32h 00mKLM

Deal found 12/5

$536

Thu 3/1211:45 pmBOS - TER

1 stop20h 30mTAP AIR PORTUGAL

Sun 3/1511:50 amTER - BOS

1 stop12h 20mTAP AIR PORTUGAL

Deal found 12/6

$499

Wed 2/188:59 pmBOS - LIS

1 stop30h 56mDelta

Tue 2/2411:15 amLIS - BOS

Nonstop7h 50mDelta

Deal found 12/7

$507

Fri 5/110:50 pmBOS - LIS

1 stop14h 50mLEVEL

Thu 5/79:15 pmLIS - BOS

1 stop28h 50mLEVEL

Deal found 12/7

$615

Tue 1/136:00 amBOS - FAO

2 stops22h 30mKLM

Thu 4/98:30 amFAO - BOS

1 stop34h 05mKLM

Deal found 12/6

$538

Sun 2/226:05 pmBOS - PDL

1 stop10h 15mMultiple Airlines

Sun 3/15:50 pmPDL - BOS

Nonstop6h 10mMultiple Airlines

Deal found 12/7

$549

Mon 2/167:00 amBOS - LIS

1 stop20h 00mDelta

Tue 2/245:30 amLIS - BOS

1 stop13h 10mDelta

Deal found 12/7

$507

Sun 2/226:05 pmBOS - PDL

1 stop25h 40mTAP AIR PORTUGAL

Sun 3/17:25 pmPDL - BOS

1 stop23h 10mTAP AIR PORTUGAL

Deal found 12/7

$521

Last-minute flights from Maine to Portugal
Discover last-minute flight deals from Maine to Portugal. Data last updated December 8, 2025 and is based on user searches.

Fri 1/94:45 pmBOS - OPO

1 stop9h 55mIberia

Fri 1/168:20 amOPO - BOS

1 stop11h 55mIberia

Deal found 12/6

$425

Mon 1/1210:05 amBOS - OPO

2 stops24h 20mDelta

Wed 1/215:00 amOPO - BOS

2 stops31h 24mDelta

Deal found 12/6

$413

Thu 1/156:05 pmBOS - PDL

1 stop25h 40mTAP AIR PORTUGAL

Tue 1/207:25 pmPDL - BOS

1 stop23h 10mTAP AIR PORTUGAL

Deal found 12/6

$403

Fri 1/1610:45 pmBOS - PDL

1 stop21h 00mTAP AIR PORTUGAL

Wed 1/217:25 pmPDL - BOS

1 stop23h 10mTAP AIR PORTUGAL

Deal found 12/7

$405

Tue 1/2012:16 pmBOS - OPO

2 stops18h 29mAmerican Airlines

Tue 1/2712:25 pmOPO - BOS

2 stops15h 31mAmerican Airlines

Deal found 12/6

$390

Sun 1/2510:45 pmBOS - PDL

1 stop15h 50mTAP AIR PORTUGAL

Tue 2/37:25 pmPDL - BOS

1 stop23h 10mTAP AIR PORTUGAL

Deal found 12/6

$418

Mon 1/266:30 pmBOS - OPO

1 stop11h 00mKLM

Mon 3/304:20 pmOPO - BOS

1 stop26h 15mKLM

Deal found 12/6

$395

Mon 1/265:30 amBOS - OPO

2 stops25h 35mMultiple Airlines

Mon 3/307:20 pmOPO - BOS

1 stop25h 10mMultiple Airlines

Deal found 12/6

$421

Wed 1/286:05 pmBOS - PDL

1 stop10h 15mTAP AIR PORTUGAL

Fri 2/66:30 amPDL - BOS

1 stop12h 05mTAP AIR PORTUGAL

Deal found 12/6

$411

Wed 1/289:50 pmBOS - OPO

1 stop32h 20mSWISS

Sun 2/14:10 pmOPO - BOS

2 stops57h 10mSWISS

Deal found 12/8

$426

Wed 1/286:05 pmBOS - PDL

1 stop10h 15mTAP AIR PORTUGAL

Mon 2/26:40 amPDL - BOS

1 stop11h 55mTAP AIR PORTUGAL

Deal found 12/6

$427

Thu 1/296:05 pmBOS - OPO

1 stop10h 50mTAP AIR PORTUGAL

Sun 2/18:55 amOPO - BOS

1 stop10h 40mTAP AIR PORTUGAL

Deal found 12/7

$429

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 December 8, 2025.

Wed 1/216:05 pmBOS - PDL

1 stop10h 15mTAP AIR PORTUGAL

Deal found 12/6

$210

Wed 3/187:05 pmBOS - PDL

1 stop10h 15mTAP AIR PORTUGAL

Deal found 12/6

$217

Mon 5/46:05 pmBOS - PDL

1 stop16h 30mTAP AIR PORTUGAL

Deal found 12/7

$218

Tue 4/1410:45 pmBOS - PDL

1 stop31h 00mTAP AIR PORTUGAL

Deal found 12/6

$220

Sun 4/1210:45 pmBOS - PDL

1 stop16h 05mTAP AIR PORTUGAL

Deal found 12/7

$223

Fri 3/207:05 pmBOS - PDL

1 stop10h 35mTAP AIR PORTUGAL

Deal found 12/7

$236

Tue 3/177:05 pmBOS - PDL

1 stop10h 15mTAP AIR PORTUGAL

Deal found 12/7

$238

Thu 3/197:05 pmBOS - PDL

1 stop20h 25mTAP AIR PORTUGAL

Deal found 12/7

$244

Sun 1/1110:40 pmBOS - OPO

1 stop28h 30mMultiple Airlines

Deal found 12/7

$256

Tue 4/2110:45 pmBOS - OPO

2 stops17h 00mMultiple Airlines

Deal found 12/5

$258

Fri 3/1310:25 pmBOS - PDL

Nonstop4h 55mAzores Airlines

Deal found 12/7

$259

Sun 3/1511:45 pmBOS - OPO

2 stops29h 40mMultiple Airlines

Deal found 12/6

$259

Find flight deals from Maine to Portugal

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$390 (American Airlines)
One-way from	$210 (SmartFares)
Popular in	December
Cheapest in	February
Average price	$4,577

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

Search Deals

One-way flight from Maine to Portugal

Search Deals

Highest demand for flights based on searches. 37% potential increase in price ($751 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 37% potential price decrease ($335 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in December 2025

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Wed 2/25

11:35 am-10:30 am

2 stops17h 55m

Porto

Fri 3/13

5:00 am-7:55 pm

1 stop18h 55m

$399

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Sun 2/8

11:00 am-10:30 am

2 stops18h 30m

Porto

Tue 2/17

5:00 am-1:25 pm

1 stop13h 25m

$399

BostonPonta Delgada

BOS - PDL

BOSPDL

Boston Logan Intl

Wed 4/8

10:45 pm-6:50 pm

1 stop16h 05m

Ponta Delgada Nordela

Wed 4/15

10:45 am-8:45 pm

1 stop14h 00m

$405

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Wed 2/11

11:30 am-10:30 am

2 stops18h 00m

Porto

Wed 2/25

11:25 am-11:26 pm

2 stops17h 01m

$408

BostonPonta Delgada

BOS - PDL

BOSPDL

Boston Logan Intl

Wed 5/13

10:45 pm-11:45 pm

1 stop21h 00m

Ponta Delgada Nordela

Wed 5/20

10:45 am-8:45 pm

1 stop14h 00m

$413

BostonPonta Delgada

BOS - PDL

BOSPDL

Boston Logan Intl

Thu 4/30

10:45 pm-11:45 pm

1 stop21h 00m

Ponta Delgada Nordela

Mon 5/4

10:45 am-8:20 pm

1 stop13h 35m

$413

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Tue 4/28

5:25 pm-9:45 am

1 stop11h 20m

Porto

Thu 5/14

12:35 pm-6:13 pm

1 stop10h 38m

$425

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Tue 2/24

2:20 pm-9:30 am

2 stops14h 10m

Porto

Mon 3/9

12:35 pm-11:57 pm

2 stops15h 22m

$429

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Wed 4/8

9:30 am-9:45 am

2 stops19h 15m

Porto

Wed 4/15

12:35 pm-12:04 am

2 stops16h 29m

$429

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Wed 4/22

6:25 pm-9:45 am

1 stop10h 20m

Porto

Wed 5/6

6:00 am-3:55 pm

1 stop14h 55m

$432

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/7

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?

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

How long is the flight from Maine to Portugal?
For as low as $394, American Airlines can have you in Portugal from Maine in 17h 40m. Maine and Portugal are separated by a distance of 3134 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

Top airline flying from Maine to Portugal

Airline	Cheapest	Average	Flexibility	On-time
United Airlines	Cheapest$578	Average$778	FlexibilityNo cancel fee	On-time69%

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$210+ 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 1/21. 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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Cheap 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 December 8, 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 December 8, 2025.

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 December 8, 2025.

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

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 December 8, 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?

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?

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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 December 8, 2025.