How long is the flight from Maine to Portugal?

For as low as $422, Delta can have you in Portugal from Maine in 12h 20m. Maine and Portugal are separated by a distance of 3293 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 $205. Users have also found prices from $274 and $326 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.

$205+ Cheap 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	$402 (Air Canada)
One-way from	$205 (oojo)
Popular in	May
Cheapest in	February
Average price	$945

Provider with most accurate pricing for Portland-Lisbon Humberto Delgado flight deals.

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From Maine to Portugal

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One-way flight from Maine to Portugal

Search Deals

Highest demand for flights based on searches. 27% potential increase in price ($345 potential increase over avg. RT price).

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Cheapest flight prices on average. 7% potential price decrease ($67 potential savings vs. average RT price).

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Average for round-trip flights in October 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 October 30, 2025.

Sun 11/911:59 amBOS - OPO

1 stop16h 31mMultiple Airlines

Tue 11/259:10 amOPO - BOS

2 stops16h 10mMultiple Airlines

Deal found 10/29

$402

Sat 11/2910:25 pmBOS - OPO

1 stop18h 35mTAP AIR PORTUGAL

Fri 12/59:00 amOPO - BOS

1 stop16h 10mTAP AIR PORTUGAL

Deal found 10/30

$403

Sat 11/2910:25 pmBOS - OPO

1 stop13h 35mTAP AIR PORTUGAL

Sat 12/61:00 pmOPO - BOS

1 stop12h 10mTAP AIR PORTUGAL

Deal found 10/30

$404

Wed 12/39:59 amBOS - OPO

2 stops19h 31mDelta

Tue 12/911:25 amOPO - BOS

2 stops25h 08mDelta

Deal found 10/28

$408

Sun 11/239:30 amBOS - OPO

2 stops19h 00mUnited Airlines

Mon 12/112:30 pmOPO - BOS

1 stop29h 55mUnited Airlines

Deal found 10/29

$409

Sat 12/65:30 amBOS - OPO

2 stops24h 45mMultiple Airlines

Tue 1/2012:05 pmOPO - BOS

1 stop13h 15mMultiple Airlines

Deal found 10/29

$410

Fri 11/288:40 pmBOS - OPO

1 stop11h 10mMultiple Airlines

Thu 12/1112:05 pmOPO - BOS

1 stop12h 55mMultiple Airlines

Deal found 10/29

$416

Fri 11/288:40 pmBOS - OPO

1 stop22h 00mMultiple Airlines

Fri 12/512:50 pmOPO - BOS

1 stop12h 10mMultiple Airlines

Deal found 10/29

$418

Thu 11/2710:45 pmBOS - OPO

1 stop13h 15mTAP AIR PORTUGAL

Thu 12/46:00 pmOPO - BOS

1 stop25h 35mTAP AIR PORTUGAL

Deal found 10/29

$419

Mon 11/245:10 pmBOS - FAO

1 stop12h 20mAer Lingus

Tue 12/911:10 amFAO - BOS

1 stop12h 45mAer Lingus

Deal found 10/30

$422

Sat 12/610:25 pmBOS - OPO

1 stop11h 35mTAP AIR PORTUGAL

Wed 12/178:00 pmOPO - BOS

1 stop29h 10mTAP AIR PORTUGAL

Deal found 10/30

$424

Sat 12/610:10 pmBOS - OPO

1 stop15h 25mSWISS

Tue 1/2012:05 pmOPO - BOS

1 stop13h 15mSWISS

Deal found 10/29

$425

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 October 30, 2025.

Wed 12/39:59 amBOS - OPO

2 stops19h 31mDelta

Tue 12/911:25 amOPO - BOS

2 stops25h 08mDelta

Deal found 10/28

$408

Sun 11/239:30 amBOS - OPO

2 stops19h 00mUnited Airlines

Mon 12/112:30 pmOPO - BOS

1 stop29h 55mUnited Airlines

Deal found 10/29

$409

Mon 11/245:10 pmBOS - FAO

1 stop12h 20mAer Lingus

Tue 12/911:10 amFAO - BOS

1 stop12h 45mAer Lingus

Deal found 10/30

$422

Thu 11/279:40 amBOS - OPO

2 stops18h 50mMultiple Airlines

Thu 12/412:05 pmOPO - BOS

1 stop12h 55mMultiple Airlines

Deal found 10/28

$423

Thu 11/276:30 pmBOS - OPO

1 stop10h 55mKLM

Thu 12/411:20 amOPO - BOS

2 stops16h 06mKLM

Deal found 10/29

$453

Tue 4/286:30 pmBOS - TER

1 stop14h 20mTAP AIR PORTUGAL

Tue 5/51:40 pmTER - BOS

1 stop29h 00mTAP AIR PORTUGAL

Deal found 10/29

$490

Thu 11/273:05 pmBOS - LIS

1 stop12h 50mVirgin Atlantic

Wed 12/311:15 amLIS - BOS

Nonstop7h 45mVirgin Atlantic

Deal found 10/30

$496

Thu 1/81:50 pmBOS - LIS

2 stops21h 00mScandinavian Airlines

Mon 1/196:10 pmLIS - BOS

2 stops32h 43mScandinavian Airlines

Deal found 10/28

$536

Sat 11/299:20 pmBOS - PDL

Nonstop4h 55mAzores Airlines

Sat 12/65:45 pmPDL - BOS

Nonstop6h 10mAzores Airlines

Deal found 10/30

$578

Wed 2/189:35 pmBOS - LIS

1 stop15h 05mBritish Airways

Wed 2/2512:55 pmLIS - BOS

1 stop11h 50mBritish Airways

Deal found 10/29

$672

Mon 11/109:59 amBOS - OPO

2 stops19h 31mDelta

Wed 11/196:00 amOPO - BOS

2 stops17h 55mDelta

Deal found 10/28

$409

Wed 11/264:29 pmBOS - OPO

2 stops17h 56mMultiple Airlines

Tue 12/212:55 pmOPO - BOS

2 stops30h 57mMultiple Airlines

Deal found 10/29

$435

Thu 11/272:21 pmBOS - OPO

2 stops14h 09mUnited Airlines

Thu 12/46:00 amOPO - BOS

2 stops22h 41mUnited Airlines

Deal found 10/28

$444

Fri 11/146:30 pmBOS - OPO

1 stop11h 00mKLM

Tue 11/1811:25 amOPO - BOS

2 stops15h 59mKLM

Deal found 10/28

$453

Tue 11/257:50 amBOS - OPO

2 stops22h 50mUnited Airlines

Mon 12/112:30 pmOPO - BOS

1 stop29h 55mUnited Airlines

Deal found 10/29

$444

Sat 11/298:25 pmBOS - OPO

1 stop33h 05mDelta

Tue 12/911:15 amOPO - BOS

1 stop31h 05mDelta

Deal found 10/28

$446

Fri 1/306:05 pmBOS - TER

1 stop12h 55mTAP AIR PORTUGAL

Fri 2/276:40 amTER - BOS

1 stop17h 30mTAP AIR PORTUGAL

Deal found 10/30

$497

Thu 11/137:25 pmBOS - FNC

1 stop13h 10mMultiple Airlines

Mon 11/176:00 amFNC - BOS

1 stop15h 50mMultiple Airlines

Deal found 10/28

$461

Wed 11/264:29 pmBOS - OPO

2 stops17h 56mUnited Airlines

Mon 12/112:30 pmOPO - BOS

2 stops30h 35mUnited Airlines

Deal found 10/29

$448

Mon 12/12:30 pmPWM - LIS

1 stop13h 30mKLM

Mon 12/810:00 amLIS - PWM

1 stop18h 59mKLM

Deal found 10/30

$506

Wed 11/129:25 pmBOS - PDL

Nonstop4h 55mAzores Airlines

Mon 11/175:45 pmPDL - BOS

Nonstop6h 10mAzores Airlines

Deal found 10/30

$578

Wed 12/35:00 pmBOS - LIS

1 stop10h 40mDelta

Mon 12/811:15 amLIS - BOS

Nonstop7h 45mDelta

Deal found 10/30

$496

Wed 1/146:05 pmBOS - PDL

1 stop25h 40mTAP AIR PORTUGAL

Sun 1/187:25 pmPDL - BOS

1 stop23h 10mTAP AIR PORTUGAL

Deal found 10/29

$565

Wed 1/218:50 pmBOS - FAO

1 stop16h 25mKLM

Thu 2/198:15 pmFAO - BOS

1 stop22h 10mKLM

Deal found 10/29

$525

Sat 12/69:20 pmBOS - PDL

Nonstop4h 55mAzores Airlines

Sat 12/135:45 pmPDL - BOS

Nonstop6h 10mAzores Airlines

Deal found 10/30

$579

Fri 11/144:20 pmBOS - FNC

2 stops17h 15mMultiple Airlines

Sat 11/226:30 amFNC - BOS

2 stops18h 30mMultiple Airlines

Deal found 10/28

$538

Thu 11/273:05 pmBOS - LIS

1 stop12h 50mDelta

Tue 12/211:25 amLIS - BOS

1 stop30h 55mDelta

Deal found 10/30

$508

Sat 12/275:35 pmBOS - LIS

1 stop17h 30mScandinavian Airlines

Mon 1/126:10 pmLIS - BOS

2 stops33h 12mScandinavian Airlines

Deal found 10/28

$687

Tue 12/96:05 pmBOS - FNC

1 stop21h 20mTAP AIR PORTUGAL

Tue 12/167:50 amFNC - BOS

1 stop11h 55mTAP AIR PORTUGAL

Deal found 10/29

$573

Fri 11/288:50 pmBOS - FAO

1 stop15h 05mKLM

Fri 12/59:15 amFAO - BOS

1 stop14h 40mKLM

Deal found 10/30

$526

Last-minute flights from Maine to Portugal
Discover last-minute flight deals from Maine to Portugal. Data last updated October 30, 2025 and is based on user searches.

Sun 11/911:59 amBOS - OPO

1 stop16h 31mMultiple Airlines

Tue 11/259:10 amOPO - BOS

2 stops16h 10mMultiple Airlines

Deal found 10/29

$402

Sun 11/239:30 amBOS - OPO

2 stops19h 00mUnited Airlines

Mon 12/112:30 pmOPO - BOS

1 stop29h 55mUnited Airlines

Deal found 10/29

$409

Mon 11/245:10 pmBOS - FAO

1 stop12h 20mAer Lingus

Tue 12/911:10 amFAO - BOS

1 stop12h 45mAer Lingus

Deal found 10/30

$422

Thu 11/2710:45 pmBOS - OPO

1 stop13h 15mTAP AIR PORTUGAL

Thu 12/46:00 pmOPO - BOS

1 stop25h 35mTAP AIR PORTUGAL

Deal found 10/29

$419

Fri 11/288:40 pmBOS - OPO

1 stop11h 10mMultiple Airlines

Thu 12/1112:05 pmOPO - BOS

1 stop12h 55mMultiple Airlines

Deal found 10/29

$416

Fri 11/288:40 pmBOS - OPO

1 stop22h 00mMultiple Airlines

Fri 12/512:50 pmOPO - BOS

1 stop12h 10mMultiple Airlines

Deal found 10/29

$418

Fri 11/2811:56 amBOS - OPO

2 stops14h 44mAmerican Airlines

Fri 12/512:25 pmOPO - BOS

1 stop12h 25mAmerican Airlines

Deal found 10/29

$429

Fri 11/286:24 pmBOS - OPO

1 stop10h 06mUnited Airlines

Tue 12/96:00 amOPO - BOS

1 stop12h 25mUnited Airlines

Deal found 10/28

$430

Sat 11/2910:25 pmBOS - OPO

1 stop18h 35mTAP AIR PORTUGAL

Fri 12/59:00 amOPO - BOS

1 stop16h 10mTAP AIR PORTUGAL

Deal found 10/30

$403

Sat 11/2910:25 pmBOS - OPO

1 stop13h 35mTAP AIR PORTUGAL

Sat 12/61:00 pmOPO - BOS

1 stop12h 10mTAP AIR PORTUGAL

Deal found 10/30

$404

Sat 11/294:45 pmBOS - OPO

1 stop14h 00mMultiple Airlines

Wed 12/1012:25 pmOPO - BOS

2 stops15h 29mMultiple Airlines

Deal found 10/30

$434

Sat 11/299:20 pmBOS - OPO

1 stop17h 40mMultiple Airlines

Fri 12/1212:25 pmOPO - BOS

2 stops15h 29mMultiple Airlines

Deal found 10/30

$435

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 October 30, 2025.

Tue 3/247:05 pmBOS - PDL

1 stop10h 15mTAP AIR PORTUGAL

Deal found 10/29

$205

Sun 1/2510:45 pmBOS - PDL

1 stop15h 50mTAP AIR PORTUGAL

Deal found 10/29

$208

Fri 11/2810:45 pmBOS - PDL

1 stop15h 50mTAP AIR PORTUGAL

Deal found 10/29

$217

Sat 2/216:05 pmBOS - PDL

1 stop10h 20mTAP AIR PORTUGAL

Deal found 10/29

$225

Wed 1/286:05 pmBOS - PDL

1 stop10h 15mTAP AIR PORTUGAL

Deal found 10/29

$226

Thu 12/46:25 pmBOS - OPO

2 stops35h 35mMultiple Airlines

Deal found 10/29

$233

Tue 11/186:05 pmBOS - PDL

1 stop20h 30mTAP AIR PORTUGAL

Deal found 10/28

$242

Fri 11/287:50 pmBOS - OPO

2 stops20h 25mMultiple Airlines

Deal found 10/30

$242

Fri 1/236:05 pmBOS - PDL

1 stop10h 35mTAP AIR PORTUGAL

Deal found 10/29

$247

Fri 12/57:50 pmBOS - FNC

2 stops22h 00mMultiple Airlines

Deal found 10/29

$247

Sat 2/219:20 pmBOS - PDL

Nonstop4h 55mAzores Airlines

Deal found 10/29

$249

Sat 12/610:40 pmBOS - OPO

1 stop11h 30mMultiple Airlines

Deal found 10/29

$249

Fly from

Fly to

Route

Depart

Return

Price

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Wed 12/3

9:59 am-10:30 am

2 stops19h 31m

Porto

Tue 12/9

11:25 am-7:33 am

2 stops25h 08m

$408

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Sun 11/23

9:30 am-9:30 am

2 stops19h 00m

Porto

Mon 12/1

12:30 pm-1:25 pm

1 stop29h 55m

$409

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Mon 11/10

9:59 am-10:30 am

2 stops19h 31m

Porto

Wed 11/19

6:00 am-6:55 pm

2 stops17h 55m

$409

BostonFaro

BOS - FAO

BOSFAO

Boston Logan Intl

Mon 11/24

5:10 pm-10:30 am

1 stop12h 20m

Faro

Tue 12/9

11:10 am-6:55 pm

1 stop12h 45m

$422

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Thu 11/27

9:40 am-9:30 am

2 stops18h 50m

Porto

Thu 12/4

12:05 pm-8:00 pm

1 stop12h 55m

$423

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Wed 11/26

4:29 pm-3:25 pm

2 stops17h 56m

Porto

Tue 12/2

12:55 pm-2:52 pm

2 stops30h 57m

$435

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Thu 11/27

2:21 pm-9:30 am

2 stops14h 09m

Porto

Thu 12/4

6:00 am-11:41 pm

2 stops22h 41m

$444

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Tue 11/25

7:50 am-11:40 am

2 stops22h 50m

Porto

Mon 12/1

12:30 pm-1:25 pm

1 stop29h 55m

$444

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Sat 11/29

8:25 pm-10:30 am

1 stop33h 05m

Porto

Tue 12/9

11:15 am-1:20 pm

1 stop31h 05m

$446

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Wed 11/26

4:29 pm-3:25 pm

2 stops17h 56m

Porto

Mon 12/1

12:30 pm-2:05 pm

2 stops30h 35m

$448

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/29

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 $422, Delta can have you in Portugal from Maine in 12h 20m. Maine and Portugal are separated by a distance of 3293 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 $205. Users have also found prices from $274 and $326 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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$205+ 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 3/24. 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 October 30, 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 October 30, 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 October 30, 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 October 30, 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 October 30, 2025.