How long is the flight from Maine to Portugal?

For as low as $409, KLM can have you in Portugal from Maine in 14h 24m. 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 $224. Users have also found prices from $249 and $311 on Azores Airlines and LEVEL, respectively.

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.

$215+ Flights from Maine to Portugal

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Cheap flight deals from Maine to Portugal

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$386 (Delta)
One-way from	$215 (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

Search Deals

One-way flight from Maine to Portugal

Search Deals

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 26, 2025.

Mon 12/16:40 pmBOS - OPO

2 stops36h 00mMultiple Airlines

Tue 12/97:25 pmOPO - BOS

2 stops43h 07mMultiple Airlines

Deal found 11/24

$388

Wed 12/310:30 amBOS - OPO

2 stops19h 00mDelta

Thu 12/1111:15 amOPO - BOS

1 stop31h 05mDelta

Deal found 11/24

$398

Wed 12/33:40 pmBOS - OPO

2 stops15h 25mMultiple Airlines

Wed 12/106:00 amOPO - BOS

2 stops17h 35mMultiple Airlines

Deal found 11/24

$402

Wed 12/31:00 pmBOS - OPO

2 stops16h 30mDelta

Mon 12/1511:25 amOPO - BOS

1 stop31h 10mDelta

Deal found 11/24

$409

Mon 12/810:10 pmBOS - OPO

2 stops34h 15mSWISS

Tue 12/167:25 pmOPO - BOS

1 stop29h 55mSWISS

Deal found 11/24

$416

Sun 11/3010:45 pmBOS - OPO

1 stop9h 15mTAP AIR PORTUGAL

Sun 12/75:00 amOPO - BOS

1 stop14h 35mTAP AIR PORTUGAL

Deal found 11/25

$420

Sat 12/64:45 pmBOS - OPO

1 stop9h 55mIberia

Mon 12/1512:25 pmOPO - BOS

1 stop12h 25mIberia

Deal found 11/26

$435

Tue 12/93:40 pmBOS - OPO

2 stops15h 25mMultiple Airlines

Mon 12/157:20 pmOPO - BOS

1 stop30h 00mMultiple Airlines

Deal found 11/24

$437

Fri 12/56:15 amBOS - OPO

2 stops48h 00mMultiple Airlines

Fri 12/1212:50 pmOPO - BOS

1 stop12h 10mMultiple Airlines

Deal found 11/24

$440

Thu 11/2710:45 pmBOS - PDL

1 stop15h 45mTAP AIR PORTUGAL

Sun 12/79:30 amPDL - BOS

1 stop14h 40mTAP AIR PORTUGAL

Deal found 11/24

$491

Sat 12/66:05 pmBOS - PDL

1 stop10h 20mTAP AIR PORTUGAL

Sat 12/137:25 pmPDL - BOS

1 stop28h 45mTAP AIR PORTUGAL

Deal found 11/26

$495

Thu 12/410:45 pmBOS - PDL

1 stop29h 55mTAP AIR PORTUGAL

Sun 12/79:30 amPDL - BOS

1 stop14h 40mTAP AIR PORTUGAL

Deal found 11/23

$502

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 November 26, 2025.

Fri 1/304:45 pmBOS - OPO

1 stop18h 15mMultiple Airlines

Fri 2/68:20 amOPO - BOS

2 stops16h 13mMultiple Airlines

Deal found 11/26

$405

Wed 2/118:50 pmBOS - OPO

1 stop17h 30mKLM

Wed 2/255:00 amOPO - BOS

1 stop18h 55mKLM

Deal found 11/25

$406

Wed 12/31:00 pmBOS - OPO

2 stops16h 30mDelta

Tue 12/1611:25 amOPO - BOS

2 stops24h 55mDelta

Deal found 11/24

$407

Sun 2/112:16 pmBOS - OPO

2 stops14h 24mIberia

Sun 2/812:25 pmOPO - BOS

2 stops15h 31mIberia

Deal found 11/26

$409

Wed 12/33:40 pmBOS - OPO

2 stops15h 00mUnited Airlines

Tue 12/166:00 amOPO - BOS

1 stop12h 25mUnited Airlines

Deal found 11/24

$420

Fri 1/308:40 pmBOS - OPO

1 stop11h 10mLufthansa

Tue 2/36:00 amOPO - BOS

1 stop12h 35mLufthansa

Deal found 11/25

$425

Thu 1/297:00 pmBOS - FNC

2 stops39h 20mScandinavian Airlines

Sat 2/72:35 pmFNC - BOS

2 stops30h 15mScandinavian Airlines

Deal found 11/25

$436

Thu 2/127:30 amBOS - LIS

1 stop26h 15mBritish Airways

Wed 2/1812:55 pmLIS - BOS

1 stop11h 50mBritish Airways

Deal found 11/25

$553

Sun 1/186:05 pmBOS - TER

1 stop13h 40mTAP AIR PORTUGAL

Sat 1/2411:50 amTER - BOS

1 stop12h 20mTAP AIR PORTUGAL

Deal found 11/25

$560

Sun 2/159:25 pmBOS - PDL

Nonstop4h 55mAzores Airlines

Sun 3/15:50 pmPDL - BOS

Nonstop6h 10mAzores Airlines

Deal found 11/25

$569

Wed 12/311:00 amBOS - OPO

2 stops18h 30mDelta

Wed 12/1011:25 amOPO - BOS

2 stops24h 55mDelta

Deal found 11/24

$407

Fri 1/238:40 pmBOS - OPO

1 stop11h 10mMultiple Airlines

Mon 1/2612:05 pmOPO - BOS

1 stop12h 55mMultiple Airlines

Deal found 11/25

$419

Thu 1/157:55 pmBOS - FAO

2 stops39h 25mScandinavian Airlines

Tue 4/2810:30 amFAO - BOS

1 stop34h 05mScandinavian Airlines

Deal found 11/26

$460

Thu 2/54:10 pmBOS - OPO

2 stops14h 35mMultiple Airlines

Wed 2/1112:25 pmOPO - BOS

1 stop12h 25mMultiple Airlines

Deal found 11/24

$429

Wed 12/317:10 pmBOS - FAO

1 stop18h 05mKLM

Sat 1/315:45 pmFAO - BOS

1 stop24h 40mKLM

Deal found 11/25

$525

Mon 1/1210:05 amBOS - FAO

2 stops19h 45mScandinavian Airlines

Tue 4/2810:30 amFAO - BOS

1 stop34h 05mScandinavian Airlines

Deal found 11/24

$479

Fri 1/302:35 pmPWM - LIS

1 stop12h 25mDelta

Tue 2/310:00 amLIS - PWM

1 stop32h 45mDelta

Deal found 11/25

$480

Thu 1/83:12 pmPWM - LIS

1 stop11h 58mUnited Airlines

Thu 1/155:00 amLIS - PWM

2 stops18h 50mUnited Airlines

Deal found 11/26

$548

Thu 3/197:05 pmBOS - PDL

1 stop20h 25mTAP AIR PORTUGAL

Sun 3/229:30 amPDL - BOS

1 stop14h 40mTAP AIR PORTUGAL

Deal found 11/24

$576

Thu 1/297:10 pmBOS - FNC

1 stop17h 00mKLM

Wed 2/410:25 amFNC - BOS

1 stop32h 00mKLM

Deal found 11/25

$535

Thu 1/158:40 pmBOS - FAO

2 stops38h 25mMultiple Airlines

Wed 1/282:40 pmFAO - BOS

1 stop34h 40mMultiple Airlines

Deal found 11/26

$510

Mon 1/265:05 pmBOS - LIS

1 stop9h 55mDelta

Tue 2/175:30 amLIS - BOS

2 stops20h 57mDelta

Deal found 11/24

$517

Fri 1/167:30 amBOS - FAO

2 stops27h 50mScandinavian Airlines

Tue 4/2810:30 amFAO - BOS

1 stop34h 05mScandinavian Airlines

Deal found 11/26

$519

Tue 2/246:05 pmBOS - TER

1 stop12h 55mTAP AIR PORTUGAL

Tue 3/311:50 amTER - BOS

1 stop30h 45mTAP AIR PORTUGAL

Deal found 11/25

$577

Fri 1/307:10 pmBOS - FNC

1 stop33h 10mKLM

Fri 2/66:00 pmFNC - BOS

1 stop24h 25mKLM

Deal found 11/25

$535

Sun 5/108:00 pmBOS - PDL

1 stop8h 40mUnited Airlines

Sun 5/1711:00 amPDL - BOS

1 stop11h 13mUnited Airlines

Deal found 11/26

$616

Sun 1/251:00 pmBOS - LIS

1 stop14h 00mDelta

Sun 2/1511:25 amLIS - BOS

2 stops16h 23mDelta

Deal found 11/24

$518

Mon 1/196:05 pmBOS - TER

1 stop12h 55mMultiple Airlines

Sat 1/242:40 pmTER - BOS

2 stops34h 15mMultiple Airlines

Deal found 11/25

$522

Sun 2/226:05 pmBOS - TER

1 stop13h 40mTAP AIR PORTUGAL

Mon 3/212:35 pmTER - BOS

1 stop30h 10mTAP AIR PORTUGAL

Deal found 11/25

$577

Thu 1/295:05 pmBOS - FNC

2 stops19h 05mKLM

Thu 2/510:20 amFNC - BOS

1 stop32h 05mKLM

Deal found 11/25

$536

Last-minute flights from Maine to Portugal
Discover last-minute flight deals from Maine to Portugal. Data last updated November 26, 2025 and is based on user searches.

Thu 11/2710:45 pmBOS - PDL

1 stop15h 45mTAP AIR PORTUGAL

Sun 12/79:30 amPDL - BOS

1 stop14h 40mTAP AIR PORTUGAL

Deal found 11/24

$491

Sun 11/3010:45 pmBOS - OPO

1 stop9h 15mTAP AIR PORTUGAL

Sun 12/75:00 amOPO - BOS

1 stop14h 35mTAP AIR PORTUGAL

Deal found 11/25

$420

Mon 12/16:40 pmBOS - OPO

2 stops36h 00mMultiple Airlines

Tue 12/97:25 pmOPO - BOS

2 stops43h 07mMultiple Airlines

Deal found 11/24

$388

Wed 12/39:59 amBOS - OPO

2 stops19h 31mDelta

Wed 12/106:00 amOPO - BOS

1 stop17h 55mDelta

Deal found 11/24

$398

Wed 12/33:40 pmBOS - OPO

2 stops15h 25mMultiple Airlines

Wed 12/106:00 amOPO - BOS

2 stops17h 35mMultiple Airlines

Deal found 11/24

$402

Wed 12/31:00 pmBOS - OPO

2 stops16h 30mDelta

Mon 12/1511:25 amOPO - BOS

1 stop31h 10mDelta

Deal found 11/24

$409

Thu 12/410:45 pmBOS - PDL

1 stop29h 55mTAP AIR PORTUGAL

Sun 12/79:30 amPDL - BOS

1 stop14h 40mTAP AIR PORTUGAL

Deal found 11/23

$502

Fri 12/56:15 amBOS - OPO

2 stops48h 00mMultiple Airlines

Fri 12/1212:50 pmOPO - BOS

1 stop12h 10mMultiple Airlines

Deal found 11/24

$440

Sat 12/64:45 pmBOS - OPO

1 stop9h 55mIberia

Mon 12/1512:25 pmOPO - BOS

1 stop12h 25mIberia

Deal found 11/26

$435

Sat 12/66:05 pmBOS - PDL

1 stop10h 20mTAP AIR PORTUGAL

Sat 12/137:25 pmPDL - BOS

1 stop28h 45mTAP AIR PORTUGAL

Deal found 11/26

$495

Mon 12/810:10 pmBOS - OPO

2 stops34h 15mSWISS

Mon 12/157:20 pmOPO - BOS

1 stop30h 00mSWISS

Deal found 11/24

$416

Tue 12/93:40 pmBOS - OPO

2 stops15h 25mMultiple Airlines

Mon 12/157:20 pmOPO - BOS

1 stop30h 00mMultiple Airlines

Deal found 11/24

$437

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 November 26, 2025.

Sun 1/1110:40 pmBOS - OPO

1 stop28h 30mMultiple Airlines

Deal found 11/24

$215

Thu 1/810:40 pmBOS - OPO

1 stop17h 35mMultiple Airlines

Deal found 11/26

$219

Sun 12/710:45 pmBOS - PDL

1 stop29h 30mTAP AIR PORTUGAL

Deal found 11/23

$224

Mon 12/16:05 pmBOS - PDL

1 stop20h 30mTAP AIR PORTUGAL

Deal found 11/26

$230

Fri 3/2711:45 pmBOS - PDL

1 stop21h 00mTAP AIR PORTUGAL

Deal found 11/25

$238

Fri 12/56:05 pmBOS - PDL

1 stop10h 35mTAP AIR PORTUGAL

Deal found 11/26

$244

Sat 1/1010:40 pmBOS - OPO

1 stop28h 30mMultiple Airlines

Deal found 11/25

$244

Sun 12/149:25 pmBOS - PDL

Nonstop4h 55mAzores Airlines

Deal found 11/25

$249

Mon 12/89:25 pmBOS - TER

Nonstop4h 55mAzores Airlines

Deal found 11/25

$249

Sat 12/66:05 pmBOS - PDL

1 stop10h 20mTAP AIR PORTUGAL

Deal found 11/26

$250

Mon 12/159:25 pmBOS - PDL

1 stop12h 40mMultiple Airlines

Deal found 11/24

$252

Wed 12/107:50 pmBOS - FAO

2 stops32h 15mMultiple Airlines

Deal found 11/25

$253

Fly from

Fly to

Route

Depart

Return

Price

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Fri 1/30

4:45 pm-4:00 pm

1 stop18h 15m

Porto

Fri 2/6

8:20 am-7:33 pm

2 stops16h 13m

$405

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Wed 2/11

8:50 pm-7:20 pm

1 stop17h 30m

Porto

Wed 2/25

5:00 am-6:55 pm

1 stop18h 55m

$406

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Wed 12/3

1:00 pm-10:30 am

2 stops16h 30m

Porto

Tue 12/16

11:25 am-7:20 am

2 stops24h 55m

$407

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Wed 12/3

11:00 am-10:30 am

2 stops18h 30m

Porto

Wed 12/10

11:25 am-7:20 am

2 stops24h 55m

$407

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Sun 2/1

12:16 pm-7:40 am

2 stops14h 24m

Porto

Sun 2/8

12:25 pm-10:56 pm

2 stops15h 31m

$409

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Fri 1/23

8:40 pm-12:50 pm

1 stop11h 10m

Porto

Mon 1/26

12:05 pm-8:00 pm

1 stop12h 55m

$419

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Wed 12/3

3:40 pm-11:40 am

2 stops15h 00m

Porto

Tue 12/16

6:00 am-1:25 pm

1 stop12h 25m

$420

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Fri 1/30

8:40 pm-12:50 pm

1 stop11h 10m

Porto

Tue 2/3

6:00 am-1:35 pm

1 stop12h 35m

$425

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Thu 2/5

4:10 pm-11:45 am

2 stops14h 35m

Porto

Wed 2/11

12:25 pm-7:50 pm

1 stop12h 25m

$429

BostonFunchal

BOS - FNC

BOSFNC

Boston Logan Intl

Thu 1/29

7:00 pm-3:20 pm

2 stops39h 20m

Funchal Madeira

Sat 2/7

2:35 pm-3:50 pm

2 stops30h 15m

$436

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/24

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 $409, KLM can have you in Portugal from Maine in 14h 24m. 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 $224. Users have also found prices from $249 and $311 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

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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$215+ 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 1/11. 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

1. Tell us where you want to go

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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 26, 2025.

Most accurate provider

Most trusted provider

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 November 26, 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 November 26, 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 November 26, 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?

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 November 26, 2025.