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Portugal

$424+ Cheap flights from Portland, ME (PWM) 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 10/8. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — LIS
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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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 June 12, 2025.

Round-trip from

$611
(United Airlines)

One-way from

$424
(Kiwi.com)

Popular in

May

Cheapest in

February
From Portland to Portugal
Search Deals
One-way flight from Portland to Portugal
Search Deals
Highest demand for flights based on searches. 31% potential increase in price ($387 potential increase over avg. RT price).
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Cheapest flight prices on average. 9% potential price decrease ($73 potential savings vs. average RT price).
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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 June 12, 2025.

This United Airlines deal was found by Cheapflights users on 6/10. 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.
Mon 12/13:00 pmPWM - LIS
1 stop12h 10mUnited Airlines
Mon 12/811:00 amLIS - PWM
2 stops31h 52mUnited Airlines
Deal found 6/10$611
This American Airlines deal was found by Cheapflights users on 6/12. 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.
Mon 12/11:06 pmPWM - LIS
1 stop14h 59mAmerican Airlines
Mon 12/811:05 amLIS - PWM
1 stop16h 24mAmerican Airlines
Deal found 6/12$628
This KLM deal was found by Cheapflights users on 6/10. 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.
Wed 10/152:35 pmPWM - OPO
2 stops19h 55mKLM
Thu 10/238:20 pmOPO - PWM
2 stops24h 50mKLM
Deal found 6/10$724
This United Airlines deal was found by Cheapflights users on 6/10. 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.
Wed 10/155:36 pmPWM - OPO
1 stop11h 09mUnited Airlines
Thu 10/236:00 amOPO - PWM
2 stops17h 38mUnited Airlines
Deal found 6/10$740
This Air Canada deal was found by Cheapflights users on 6/12. 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.
Tue 7/153:50 pmPWM - OPO
2 stops36h 30mAir Canada
Tue 7/2212:50 pmOPO - PWM
2 stops39h 24mAir Canada
Deal found 6/12$925
This Air Canada deal was found by Cheapflights users on 6/11. 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.
Wed 9/2410:50 amPWM - LIS
2 stops17h 30mMultiple Airlines
Tue 10/77:55 amLIS - PWM
3 stops20h 18mMultiple Airlines
Deal found 6/11$962
This Delta deal was found by Cheapflights users on 6/12. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/1512:51 pmPWM - OPO
2 stops21h 39mDelta
Wed 7/239:20 amOPO - PWM
2 stops20h 37mDelta
Deal found 6/12$975
This Air Canada deal was found by Cheapflights users on 6/11. 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.
Wed 9/2412:13 pmPWM - LIS
3 stops17h 52mAir Canada
Tue 10/77:55 amLIS - PWM
3 stops20h 18mAir Canada
Deal found 6/11$1,061
This Air Canada deal was found by Cheapflights users on 6/12. 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.
Mon 7/147:28 amPWM - OPO
3 stops21h 07mMultiple Airlines
Tue 7/2212:50 pmOPO - PWM
2 stops16h 09mMultiple Airlines
Deal found 6/12$1,249
This United deal was found by Cheapflights users on 6/12. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/105:45 amPWM - PDL
2 stops29h 15mMultiple Airlines
Mon 10/1310:45 amPDL - PWM
2 stops34h 10mMultiple Airlines
Deal found 6/12$1,302
This Priceline deal was found by Cheapflights users on 6/10. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/162:19 pmPWM - PDL
2 stops39h 26mTAP AIR PORTUGAL
Sun 7/207:40 pmPDL - PWM
2 stops32h 37mTAP AIR PORTUGAL
Deal found 6/10$1,402
This FlightHub deal was found by Cheapflights users on 6/11. 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.
Mon 6/162:19 pmPWM - LIS
1 stop14h 46mTAP AIR PORTUGAL
Wed 6/188:10 pmLIS - PWM
2 stops32h 42mTAP AIR PORTUGAL
Deal found 6/11$1,460

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 June 12, 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

Mon 12/1

3:00 pm-8:10 am

1 stop12h 10m

Lisbon Humberto Delgado

Mon 12/8

11:00 am-1:52 pm

2 stops31h 52m

$611

PortlandLisbon

PWM - LIS

PWMLIS

Portland

Mon 12/1

1:06 pm-9:05 am

1 stop14h 59m

Lisbon Humberto Delgado

Mon 12/8

11:05 am-10:29 pm

1 stop16h 24m

$628

PortlandPorto

PWM - OPO

PWMOPO

Portland

Wed 10/15

2:35 pm-3:30 pm

2 stops19h 55m

Porto

Thu 10/23

8:20 pm-4:10 pm

2 stops24h 50m

$724

PortlandPorto

PWM - OPO

PWMOPO

Portland

Wed 10/15

5:36 pm-9:45 am

1 stop11h 09m

Porto

Thu 10/23

6:00 am-6:38 pm

2 stops17h 38m

$740

PortlandPorto

PWM - OPO

PWMOPO

Portland

Tue 7/15

3:50 pm-9:20 am

2 stops36h 30m

Porto

Tue 7/22

12:50 pm-11:14 pm

2 stops39h 24m

$925

PortlandLisbon

PWM - LIS

PWMLIS

Portland

Wed 9/24

10:50 am-9:20 am

2 stops17h 30m

Lisbon Humberto Delgado

Tue 10/7

7:55 am-11:13 pm

3 stops20h 18m

$962

PortlandPorto

PWM - OPO

PWMOPO

Portland

Tue 7/15

12:51 pm-3:30 pm

2 stops21h 39m

Porto

Wed 7/23

9:20 am-12:57 am

2 stops20h 37m

$975

PortlandLisbon

PWM - LIS

PWMLIS

Portland

Wed 9/24

12:13 pm-11:05 am

3 stops17h 52m

Lisbon Humberto Delgado

Tue 10/7

7:55 am-11:13 pm

3 stops20h 18m

$1,061

PortlandPorto

PWM - OPO

PWMOPO

Portland

Mon 7/14

7:28 am-9:35 am

3 stops21h 07m

Porto

Tue 7/22

12:50 pm-11:59 pm

2 stops16h 09m

$1,249

PortlandPonta Delgada

PWM - PDL

PWMPDL

Portland

Fri 10/10

5:45 am-3:00 pm

2 stops29h 15m

Ponta Delgada Nordela

Mon 10/13

10:45 am-4:55 pm

2 stops34h 10m

$1,302

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/12

Showing 1-10 of 18 results
1
2

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 $1,136). 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 June 12, 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 June 12, 2025.
Peruse reviews from past customers who have flown with Singapore Airlines, Delta and KLM from Portland to Portugal to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Singapore Airlines
8.1
Very good
1,302 reviews

Food

7.7

Entertainment

8.0

Boarding

8.2

Overall

8.1

Comfort

7.9

Crew

8.6

Reviews

1 / 20
6.0
Good

Gina,Dec 2024

BLR - SIN

Overall the experience was good. First flight of 17 hours had no entertainment since Singapore airline has technical issues. Was informed that passengers would get a $350 voucher for future flight. Uncertain how that is being distributed but would like to understand if an email is required from my end or if it is an automatic email sent to me by Singapore Airlines. -Gina Robles
Singapore Airlines
8.1
Very good
1,302 reviews
Singapore Airlines
8.1
Very good
1,302 reviews

Food

7.7

Entertainment

8.0

Boarding

8.2

Overall

8.1

Comfort

7.9

Crew

8.6

Reviews

1 / 20
6.0
Good

Gina,Dec 2024

BLR - SIN

Overall the experience was good. First flight of 17 hours had no entertainment since Singapore airline has technical issues. Was informed that passengers would get a $350 voucher for future flight. Uncertain how that is being distributed but would like to understand if an email is required from my end or if it is an automatic email sent to me by Singapore Airlines. -Gina Robles
Delta
8.0
Very good
7,946 reviews
Singapore Airlines
8.1
Very good
1,302 reviews

Food

7.7

Entertainment

8.0

Boarding

8.2

Overall

8.1

Comfort

7.9

Crew

8.6

Reviews

1 / 20
6.0
Good

Gina,Dec 2024

BLR - SIN

Overall the experience was good. First flight of 17 hours had no entertainment since Singapore airline has technical issues. Was informed that passengers would get a $350 voucher for future flight. Uncertain how that is being distributed but would like to understand if an email is required from my end or if it is an automatic email sent to me by Singapore Airlines. -Gina Robles
KLM
7.8
Good
1,358 reviews
Singapore Airlines
8.1
Very good
1,302 reviews

Food

7.7

Entertainment

8.0

Boarding

8.2

Overall

8.1

Comfort

7.9

Crew

8.6

Reviews

1 / 20
6.0
Good

Gina,Dec 2024

BLR - SIN

Overall the experience was good. First flight of 17 hours had no entertainment since Singapore airline has technical issues. Was informed that passengers would get a $350 voucher for future flight. Uncertain how that is being distributed but would like to understand if an email is required from my end or if it is an automatic email sent to me by Singapore Airlines. -Gina Robles
Austrian Airlines
7.6
Good
802 reviews
Singapore Airlines
8.1
Very good
1,302 reviews

Food

7.7

Entertainment

8.0

Boarding

8.2

Overall

8.1

Comfort

7.9

Crew

8.6

Reviews

1 / 20
6.0
Good

Gina,Dec 2024

BLR - SIN

Overall the experience was good. First flight of 17 hours had no entertainment since Singapore airline has technical issues. Was informed that passengers would get a $350 voucher for future flight. Uncertain how that is being distributed but would like to understand if an email is required from my end or if it is an automatic email sent to me by Singapore Airlines. -Gina Robles
United Airlines
7.4
Good
8,790 reviews
Singapore Airlines
8.1
Very good
1,302 reviews

Food

7.7

Entertainment

8.0

Boarding

8.2

Overall

8.1

Comfort

7.9

Crew

8.6

Reviews

1 / 20
6.0
Good

Gina,Dec 2024

BLR - SIN

Overall the experience was good. First flight of 17 hours had no entertainment since Singapore airline has technical issues. Was informed that passengers would get a $350 voucher for future flight. Uncertain how that is being distributed but would like to understand if an email is required from my end or if it is an automatic email sent to me by Singapore Airlines. -Gina Robles

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 cheapest airlines to fly from Portland, Maine to Portugal one-way?

    The cheapest airlines for a one-way flight from Portland, Maine to Portugal are TAP AIR PORTUGAL ($448), Air Canada ($575), and Singapore Airlines ($1,278).

  • 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 $1,136). 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

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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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$550Average$773FlexibilityNo cancel feeOn-time69%

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