HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Portugal

$843+ Cheap flights from Portland, ME (PWM) to Portugal

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/28. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — LIS
Apr 2 — Apr 91
Wed 4/2
Wed 4/9
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Portland to Portugal with Cheapflights

1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”
2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.
3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Portland to Portugal

Keep the following information in mind while searching for Portland to Portugal flight deals. Data was last updated March 28, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$869
(Ovago)

Popular in

June

Cheapest in

February

Average price

$691
Provider with most accurate pricing for Portland-Lisbon Humberto Delgado flight deals.
Search Deals
Provider most trusted by Cheapflights users for Portland-Lisbon Humberto Delgado flights.
Search Deals
From Portland to Portugal
Search Deals
Highest demand for flights based on searches. 39% potential increase in price ($612 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 8% potential price decrease ($74 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2025
Search Deals

Find flight deals from Portland to Portugal

Cheapest flights from Portland to Portugal
Explore the most affordable flight options available from Portland to Portugal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 28, 2025.

This United Airlines deal was found by Cheapflights users on 3/27. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/281:30 pmPWM - LIS
1 stop16h 45mUnited Airlines
Fri 4/411:25 amLIS - PWM
2 stops37h 21mUnited Airlines
Deal found 3/27$843
This KLM deal was found by Cheapflights users on 3/27. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/283:00 pmPWM - LIS
1 stop13h 00mKLM
Fri 4/410:00 amLIS - PWM
1 stop19h 23mKLM
Deal found 3/27$862
This Ovago deal was found by Cheapflights users on 3/27. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/86:35 amPWM - LIS
2 stops34h 30mMultiple Airlines
Thu 5/157:00 amLIS - PWM
2 stops22h 14mMultiple Airlines
Deal found 3/27$869
This oojo deal was found by Cheapflights users on 3/27. 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.
Sun 5/117:12 amPWM - OPO
2 stops51h 38mTurkish Airlines
Sun 5/1810:45 amOPO - PWM
2 stops41h 14mTurkish Airlines
Deal found 3/27$879
This Mytrip deal was found by Cheapflights users on 3/27. 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.
Sun 5/116:00 amPWM - PDL
3 stops33h 40mMultiple Airlines
Sun 5/184:55 pmPDL - PWM
2 stops34h 32mMultiple Airlines
Deal found 3/27$1,240
This FlightHub deal was found by Cheapflights users on 3/27. 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.
Sun 6/156:10 amPWM - LIS
2 stops22h 45mTurkish Airlines
Mon 6/234:30 pmLIS - PWM
2 stops36h 07mTurkish Airlines
Deal found 3/27$1,247
This American Airlines deal was found by Cheapflights users on 3/27. 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.
Sun 6/157:41 amPWM - LIS
1 stop20h 24mAmerican Airlines
Mon 6/2311:05 amLIS - PWM
1 stop16h 58mAmerican Airlines
Deal found 3/27$1,251
This Mytrip deal was found by Cheapflights users on 3/27. 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.
Sun 5/116:00 amPWM - OPO
3 stops28h 00mMultiple Airlines
Sun 5/188:25 amOPO - PWM
2 stops20h 02mMultiple Airlines
Deal found 3/27$1,264
This Air Canada deal was found by Cheapflights users on 3/26. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/103:43 pmPWM - LIS
3 stops19h 47mAir Canada
Sat 5/177:55 amLIS - PWM
3 stops20h 28mAir Canada
Deal found 3/26$1,375

Cheapflights Fare Finder

Customize your flight search to find flights from Portland 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 March 28, 2025.
Use the filters below to find and compare flights from Portland to Portugal that are best for you.

Fly from

Portland

Fly to

Portugal

Route

Depart

Return

Price

PortlandLisbon

PWM - LIS

PWMLIS

Portland

Thu 5/8

6:35 am-10:05 pm

2 stops34h 30m

Lisbon Humberto Delgado

Thu 5/15

7:00 am-12:14 am

2 stops22h 14m

$869

PortlandPorto

PWM - OPO

PWMOPO

Portland

Sun 5/11

7:12 am-3:50 pm

2 stops51h 38m

Porto

Sun 5/18

10:45 am-10:59 pm

2 stops41h 14m

$879

PortlandLisbon

PWM - LIS

PWMLIS

Portland

Sun 8/3

7:15 pm-10:30 am

1 stop10h 15m

Lisbon Humberto Delgado

Tue 8/12

12:55 pm-2:23 pm

2 stops30h 28m

$979

PortlandLisbon

PWM - LIS

PWMLIS

Portland

Thu 5/8

2:30 pm-8:00 am

1 stop12h 30m

Lisbon Humberto Delgado

Thu 5/15

10:00 am-12:14 am

1 stop19h 14m

$1,031

PortlandPonta Delgada

PWM - PDL

PWMPDL

Portland

Sun 5/11

6:00 am-7:40 pm

3 stops33h 40m

Ponta Delgada Nordela

Sun 5/18

4:55 pm-11:27 pm

2 stops34h 32m

$1,240

PortlandLisbon

PWM - LIS

PWMLIS

Portland

Sun 6/15

6:10 am-9:55 am

2 stops22h 45m

Lisbon Humberto Delgado

Mon 6/23

4:30 pm-11:37 pm

2 stops36h 07m

$1,247

PortlandLisbon

PWM - LIS

PWMLIS

Portland

Sun 6/15

7:41 am-9:05 am

1 stop20h 24m

Lisbon Humberto Delgado

Mon 6/23

11:05 am-11:03 pm

1 stop16h 58m

$1,251

PortlandPorto

PWM - OPO

PWMOPO

Portland

Sun 5/11

6:00 am-3:00 pm

3 stops28h 00m

Porto

Sun 5/18

8:25 am-11:27 pm

2 stops20h 02m

$1,264

PortlandLisbon

PWM - LIS

PWMLIS

Portland

Sat 5/10

3:43 pm-4:30 pm

3 stops19h 47m

Lisbon Humberto Delgado

Sat 5/17

7:55 am-11:23 pm

3 stops20h 28m

$1,375

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/27

Best time to book a flight from Portland to Portugal

Have a flexible travel schedule? Discover the best time to fly to Portugal from Portland 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 Portland to Portugal

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

Currently, January is the cheapest month in which you can book a flight from Portland, Maine to Portugal (average of $612). Flying from Portland, Maine to Portugal in June is currently the most expensive (average of $1,213). 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.

What is the cheapest time of day to fly from PWM to PT?

Find hourly flight availability from Portland 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 March 28, 2025.

When flying from Portland, Maine to Portugal, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 March 28, 2025.
KLM
7.8
Good
1,321 reviews

Boarding

7.8

Entertainment

7.1

Crew

8.4

Food

7.3

Comfort

7.7

Overall

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.
KLM
7.8
Good
1,321 reviews
KLM
7.8
Good
1,321 reviews

Boarding

7.8

Entertainment

7.1

Crew

8.4

Food

7.3

Comfort

7.7

Overall

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.
United Airlines
7.4
Good
8,603 reviews
KLM
7.8
Good
1,321 reviews

Boarding

7.8

Entertainment

7.1

Crew

8.4

Food

7.3

Comfort

7.7

Overall

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.
Turkish Airlines
7.3
Good
3,744 reviews
KLM
7.8
Good
1,321 reviews

Boarding

7.8

Entertainment

7.1

Crew

8.4

Food

7.3

Comfort

7.7

Overall

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.
American Airlines
7.2
Good
10,000 reviews
KLM
7.8
Good
1,321 reviews

Boarding

7.8

Entertainment

7.1

Crew

8.4

Food

7.3

Comfort

7.7

Overall

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.
Air Canada
7.0
Good
8,981 reviews
KLM
7.8
Good
1,321 reviews

Boarding

7.8

Entertainment

7.1

Crew

8.4

Food

7.3

Comfort

7.7

Overall

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.

Related info for your journey

Find useful and relevant information for your journey from Portland to Portugal. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Portland to Portugal?

    For a flight from Portland to Portugal, you will be flying from Portland. Portland (PWM) is just 2.9 mi from the center of the city.

  • What are the most popular routes from Portland, Maine to Portugal?

    The most popular flight routes from Portland, Maine to Portugal are Portland - Lisbon Humberto Delgado, Portland - Porto and Portland - Ponta Delgada Nordela.

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

    Yes. In addition to deals on Portland to Portugal flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Portland to Portugal?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portland to Portugal.

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

    Yes. Cheapflights offers flight deals from Portland 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 Portland, Maine to Portugal?

    Currently, January is the cheapest month in which you can book a flight from Portland, Maine to Portugal (average of $612). Flying from Portland, Maine to Portugal in June is currently the most expensive (average of $1,213). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Portland to Portugal

See prices for flight routes from nearby airports that may be better suited for you.
Boston to Heathrow flights
Boston to Charles de Gaulle flights
Boston to Leonardo da Vinci/Fiumicino flights
Boston to Gatwick flights
Boston to Dublin flights
Boston to Lisbon flights
Boston to Athens flights
Boston to London City flights
Boston to Amsterdam flights
Boston to Madrid flights
Boston to Orly flights
Boston to Stansted flights
Boston to Barcelona-El Prat flights
Boston to Zurich flights
Boston to Ponta Delgada flights
Boston to Edinburgh flights
Boston to Istanbul flights
Boston to Malpensa flights
Boston to Munich flights
Boston to Frankfurt flights
Boston to Keflavik Intl flights
Boston to Copenhagen flights
Boston to Linate flights
Boston to Shannon flights
Boston to Vicenza flights
Boston to Luton flights
Boston to Florence flights
Boston to Porto flights
Boston to Tirana flights
Boston to Naples flights
Boston to Sabiha Gokcen flights
Boston to Beauvais-Tille flights
Boston to Vienna flights
Boston to Berlin flights
Boston to Frederic Chopin flights
Boston to Bruxelles-National flights
Boston to Nice flights
Boston to Prague flights
Boston to Oslo Gardermoen flights
Boston to Geneva flights
Boston to Ibiza flights
Boston to Arlanda flights
Boston to Catania flights
Boston to Zagreb flights
Boston to Glasgow Intl flights
Boston to Málaga flights
Boston to Ciampino flights
Boston to Dubrovnik flights
Boston to Manchester flights
Boston to Palermo flights

Top airline flying from Portland to Portugal

Discover the top airline that operate flights from Portland 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 March 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$550Average$981FlexibilityNo cancel feeOn-time69%
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.