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Portugal

$631+ 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 12/1. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — LIS
may. 5 — may. 121
lun. 5/5
lun. 5/12
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 abril 30, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$765
(United Airlines)

Popular in

May

Cheapest in

February

Average price

$981
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 Portland to Portugal
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Highest demand for flights based on searches. 27% potential increase in price ($316 potential increase over avg. RT price).
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Cheapest flight prices on average. 7% potential price decrease ($56 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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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 abril 30, 2025.

This KLM deal was found by Cheapflights users on 4/29. 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.
lun. 12/110:00 amPWM - LIS
1 stop17h 00mKLM
lun. 12/83:25 pmLIS - PWM
2 stops37h 06mKLM
Deal found 4/29$631
This American Airlines deal was found by Cheapflights users on 4/29. 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.
lun. 12/11:06 pmPWM - LIS
1 stop14h 59mAmerican Airlines
lun. 12/811:05 amLIS - PWM
1 stop16h 24mAmerican Airlines
Deal found 4/29$668
This Air Canada deal was found by Cheapflights users on 4/29. 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.
jue. 11/206:00 amPWM - LIS
2 stops22h 20mAir Canada
jue. 11/2711:00 amLIS - PWM
2 stops41h 17mAir Canada
Deal found 4/29$753
This United Airlines deal was found by Cheapflights users on 4/28. 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.
dom. 10/122:22 pmPWM - LIS
2 stops37h 58mUnited Airlines
dom. 10/1912:55 pmLIS - PWM
2 stops37h 49mUnited Airlines
Deal found 4/28$765
This United deal was found by Cheapflights users on 4/28. 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.
dom. 10/125:35 pmPWM - LIS
1 stop9h 45mMultiple Airlines
dom. 10/1912:55 pmLIS - PWM
2 stops29h 46mMultiple Airlines
Deal found 4/28$857
This oojo deal was found by Cheapflights users on 4/29. 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.
vie. 9/197:30 amPWM - OPO
2 stops27h 20mTurkish Airlines
dom. 10/55:10 pmOPO - PWM
2 stops49h 06mTurkish Airlines
Deal found 4/29$920
This Delta deal was found by Cheapflights users on 4/29. 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.
jue. 11/205:30 amPWM - LIS
2 stops22h 30mDelta
vie. 11/2811:15 amLIS - PWM
2 stops27h 17mDelta
Deal found 4/29$936
This United Airlines deal was found by Cheapflights users on 4/29. 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.
vie. 9/193:06 pmPWM - OPO
1 stop10h 44mUnited Airlines
dom. 10/56:00 amOPO - PWM
2 stops37h 32mUnited Airlines
Deal found 4/29$988
This KAYAK deal was found by Cheapflights users on 4/29. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 11/2210:00 amPWM - LIS
2 stops42h 00mScandinavian Airlines
mié. 11/264:55 pmLIS - PWM
2 stops35h 36mScandinavian Airlines
Deal found 4/29$1,017
This Air Canada deal was found by Cheapflights users on 4/29. 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.
vie. 9/196:23 pmPWM - OPO
2 stops34h 12mMultiple Airlines
dom. 10/510:00 amOPO - PWM
3 stops28h 24mMultiple Airlines
Deal found 4/29$1,210
This United Airlines deal was found by Cheapflights users on 4/28. 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.
sáb. 9/66:10 amPWM - PDL
2 stops22h 30mUnited Airlines
sáb. 9/1311:00 amPDL - PWM
1 stop11h 26mUnited Airlines
Deal found 4/28$1,250
This TAP AIR PORTUGAL deal was found by Cheapflights users on 4/28. 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 TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 9/62:15 pmPWM - PDL
2 stops20h 20mMultiple Airlines
sáb. 9/136:30 amPDL - PWM
2 stops20h 16mMultiple Airlines
Deal found 4/28$1,396

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 abril 30, 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

dom. 10/12

2:22 pm-9:20 am

2 stops37h 58m

Lisbon Humberto Delgado

dom. 10/19

12:55 pm-9:44 pm

2 stops37h 49m

$765

PortlandLisbon

PWM - LIS

PWMLIS

Portland

dom. 10/12

5:35 pm-8:20 am

1 stop9h 45m

Lisbon Humberto Delgado

dom. 10/19

12:55 pm-1:41 pm

2 stops29h 46m

$857

PortlandPorto

PWM - OPO

PWMOPO

Portland

vie. 9/19

7:30 am-3:50 pm

2 stops27h 20m

Porto

dom. 10/5

5:10 pm-1:16 pm

2 stops49h 06m

$920

PortlandLisbon

PWM - LIS

PWMLIS

Portland

dom. 10/12

6:30 am-8:00 am

1 stop20h 30m

Lisbon Humberto Delgado

dom. 10/19

9:55 am-11:31 pm

1 stop18h 36m

$962

PortlandPorto

PWM - OPO

PWMOPO

Portland

vie. 9/19

3:06 pm-6:50 am

1 stop10h 44m

Porto

dom. 10/5

6:00 am-2:32 pm

2 stops37h 32m

$988

PortlandLisbon

PWM - LIS

PWMLIS

Portland

jue. 5/15

2:30 pm-2:35 pm

2 stops19h 05m

Lisbon Humberto Delgado

mié. 5/28

12:45 pm-10:53 am

2 stops27h 08m

$1,016

PortlandLisbon

PWM - LIS

PWMLIS

Portland

sáb. 6/14

6:20 am-11:30 am

2 stops24h 10m

Lisbon Humberto Delgado

sáb. 6/21

12:55 pm-11:27 pm

2 stops39h 32m

$1,201

PortlandPorto

PWM - OPO

PWMOPO

Portland

vie. 9/19

6:23 pm-9:35 am

2 stops34h 12m

Porto

dom. 10/5

10:00 am-9:24 am

3 stops28h 24m

$1,210

PortlandPonta Delgada

PWM - PDL

PWMPDL

Portland

sáb. 9/6

6:10 am-8:40 am

2 stops22h 30m

Ponta Delgada Nordela

sáb. 9/13

11:00 am-6:26 pm

1 stop11h 26m

$1,250

PortlandPonta Delgada

PWM - PDL

PWMPDL

Portland

sáb. 9/6

2:15 pm-2:35 pm

2 stops20h 20m

Ponta Delgada Nordela

sáb. 9/13

6:30 am-10:46 pm

2 stops20h 16m

$1,396

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/27

Showing 1-10 of 12 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 $1,178). 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 abril 30, 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 abril 30, 2025.
Peruse reviews from past customers who have flown with Delta, KLM and United Airlines 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.
Delta
8.0
Very good
7,936 reviews

Comfort

7.9

Food

7.3

Entertainment

7.9

Crew

8.5

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,936 reviews
Delta
8.0
Very good
7,936 reviews

Comfort

7.9

Food

7.3

Entertainment

7.9

Crew

8.5

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
KLM
7.8
Good
1,333 reviews
Delta
8.0
Very good
7,936 reviews

Comfort

7.9

Food

7.3

Entertainment

7.9

Crew

8.5

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
United Airlines
7.4
Good
8,696 reviews
Delta
8.0
Very good
7,936 reviews

Comfort

7.9

Food

7.3

Entertainment

7.9

Crew

8.5

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Turkish Airlines
7.3
Good
3,788 reviews
Delta
8.0
Very good
7,936 reviews

Comfort

7.9

Food

7.3

Entertainment

7.9

Crew

8.5

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Air Canada
7.0
Good
9,242 reviews
Delta
8.0
Very good
7,936 reviews

Comfort

7.9

Food

7.3

Entertainment

7.9

Crew

8.5

Boarding

8.2

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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 - Ponta Delgada Nordela and Portland - Porto.

  • 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 $1,178). 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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Alternative routes for Portland to Portugal

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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 abril 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$550Average$981FlexibilityNo cancel feeOn-time69%

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