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$597+ Cheap flights from Portland, ME (PWM) to Lisbon (LIS)

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 3/20. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — LIS
Dec 23 — Dec 301
Mon 12/23
Mon 12/30
1 adult, Economy
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Cheap flight deals from Portland to Lisbon

Discover tips and strategies to find the most affordable flight options for your journey from Portland (PWM) to Lisbon (LIS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated December 18, 2024.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$597
(KLM)

Popular in

June

Cheapest in

January

Average price

$935
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 Lisbon Humberto Delgado
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High demand for flights, 33% potential price rise
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Best time to find cheap flights, 6% potential price drop
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Average for round-trip flights in December 2024
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Find flight deals from Portland to Lisbon

Best flights from Portland to Lisbon
Discover carefully curated flight deals from Portland to Lisbon that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 18, 2024.

This KLM deal was found by Cheapflights users on 12/18. 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.
Thu 3/202:35 pmPWM - LIS
2 stops20h 00mKLM
Wed 3/2610:00 amLIS - PWM
1 stop18h 06mKLM
Deal found 12/18$597
This Ovago deal was found by Cheapflights users on 12/17. 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.
Sat 2/13:02 pmPWM - LIS
2 stops36h 58mMultiple Airlines
Sat 2/86:55 pmLIS - PWM
2 stops34h 02mMultiple Airlines
Deal found 12/17$765
This Air Canada deal was found by Cheapflights users on 12/17. 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 2/16:00 amPWM - LIS
3 stops22h 20mAir Canada
Sat 2/85:00 amLIS - PWM
3 stops22h 30mAir Canada
Deal found 12/17$785
This United Airlines deal was found by Cheapflights users on 12/17. 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.
Sat 2/111:36 amPWM - LIS
2 stops16h 44mUnited Airlines
Sat 2/810:15 amLIS - PWM
1 stop11h 37mUnited Airlines
Deal found 12/17$789
This KAYAK deal was found by Cheapflights users on 12/17. 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.
Sat 5/172:35 pmPWM - LIS
2 stops37h 30mScandinavian Airlines
Wed 5/217:10 amLIS - PWM
2 stops21h 28mScandinavian Airlines
Deal found 12/17$939
This American Airlines deal was found by Cheapflights users on 12/17. 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.
Thu 4/174:18 pmPWM - LIS
1 stop11h 47mAmerican Airlines
Sun 5/410:15 pmLIS - PWM
2 stops22h 02mAmerican Airlines
Deal found 12/17$1,181

Find flights from Portland to Lisbon within your budget

Customize your flight search to find flights from Portland to Lisbon 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 December 18, 2024.

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PortlandLisbon

PWM - LIS

PWMLIS

Portland

Thu 3/20

2:35 pm-2:35 pm

2 stops20h 00m

Lisbon Humberto Delgado

Wed 3/26

10:00 am-12:06 am

1 stop18h 06m

$597

PortlandLisbon

PWM - LIS

PWMLIS

Portland

Sat 2/1

3:02 pm-9:00 am

2 stops36h 58m

Lisbon Humberto Delgado

Sat 2/8

6:55 pm-11:57 pm

2 stops34h 02m

$765

PortlandLisbon

PWM - LIS

PWMLIS

Portland

Sat 2/1

6:00 am-9:20 am

3 stops22h 20m

Lisbon Humberto Delgado

Sat 2/8

5:00 am-10:30 pm

3 stops22h 30m

$785

PortlandLisbon

PWM - LIS

PWMLIS

Portland

Sat 2/1

11:36 am-9:20 am

2 stops16h 44m

Lisbon Humberto Delgado

Sat 2/8

10:15 am-4:52 pm

1 stop11h 37m

$789

PortlandLisbon

PWM - LIS

PWMLIS

Portland

Sat 5/17

2:35 pm-9:05 am

2 stops37h 30m

Lisbon Humberto Delgado

Wed 5/21

7:10 am-11:38 pm

2 stops21h 28m

$939

PortlandLisbon

PWM - LIS

PWMLIS

Portland

Thu 4/17

4:18 pm-9:05 am

1 stop11h 47m

Lisbon Humberto Delgado

Sun 5/4

10:15 pm-3:17 pm

2 stops22h 02m

$1,181

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/18

Compare providers for flights from Portland to Lisbon

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Portland to Lisbon in December.
ProviderPrice AccuracyTrust Score*
AranGrantPrice Accuracy3 starsTrust Score*2 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Portland, Maine-Lisbon flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Portland, Maine-Lisbon flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Portland, Maine-Lisbon flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Portland, Maine-Lisbon flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Portland, Maine-Lisbon flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Portland to Lisbon

Have a flexible travel schedule? Discover the best time to fly to Lisbon 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.

Travel insights for flights from Portland to Lisbon

Get recent, data-driven insights about flights from Portland to Lisbon including ideal travel times, pricing trends, and more.

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

Currently, January is the cheapest month in which you can book a flight from Portland, Maine to Lisbon (average of $612). Flying from Portland, Maine to Lisbon in June is currently the most expensive (average of $1,180). 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 LIS?

Find hourly flight availability from Portland to Lisbon. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 18, 2024.

It’s typically best to fly out from Portland, Maine to Lisbon in the evening. Doing so could potentially save you 35% on the flight price compared to flying in the afternoon, which is usually more expensive.

Rainfall in Lisbon by month

Plan your trip to Lisbon by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Lisbon 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 Lisbon when rainfall is around 0.2 in.

Temperature in Lisbon by month

Plan your trip to Lisbon by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Lisbon, 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 Lisbon

Get insights into the airlines that provide service to Lisbon. 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 Lisbon. Reviews last updated December 18, 2024.
KLM
7.8
Good
1,349 reviews

Entertainment

7.2

Boarding

7.9

Crew

8.4

Comfort

7.7

Food

7.3

Overall

7.8

Reviews

1 / 10

Flight was late do to issues with loading stuff. One of the two bathrooms in business class was not working. WiFi did not work 80% of the time. My bag came out last even though it had a priority tag

KLM
7.8
Good
1,349 reviews
KLM
7.8
Good
1,349 reviews

Entertainment

7.2

Boarding

7.9

Crew

8.4

Comfort

7.7

Food

7.3

Overall

7.8

Reviews

1 / 10

Flight was late do to issues with loading stuff. One of the two bathrooms in business class was not working. WiFi did not work 80% of the time. My bag came out last even though it had a priority tag

United Airlines
7.4
Good
9,059 reviews
KLM
7.8
Good
1,349 reviews

Entertainment

7.2

Boarding

7.9

Crew

8.4

Comfort

7.7

Food

7.3

Overall

7.8

Reviews

1 / 10

Flight was late do to issues with loading stuff. One of the two bathrooms in business class was not working. WiFi did not work 80% of the time. My bag came out last even though it had a priority tag

Scandinavian Airlines
7.3
Good
1,309 reviews
KLM
7.8
Good
1,349 reviews

Entertainment

7.2

Boarding

7.9

Crew

8.4

Comfort

7.7

Food

7.3

Overall

7.8

Reviews

1 / 10

Flight was late do to issues with loading stuff. One of the two bathrooms in business class was not working. WiFi did not work 80% of the time. My bag came out last even though it had a priority tag

American Airlines
7.2
Good
10,000 reviews
KLM
7.8
Good
1,349 reviews

Entertainment

7.2

Boarding

7.9

Crew

8.4

Comfort

7.7

Food

7.3

Overall

7.8

Reviews

1 / 10

Flight was late do to issues with loading stuff. One of the two bathrooms in business class was not working. WiFi did not work 80% of the time. My bag came out last even though it had a priority tag

Air Canada
7.0
Good
8,382 reviews
KLM
7.8
Good
1,349 reviews

Entertainment

7.2

Boarding

7.9

Crew

8.4

Comfort

7.7

Food

7.3

Overall

7.8

Reviews

1 / 10

Flight was late do to issues with loading stuff. One of the two bathrooms in business class was not working. WiFi did not work 80% of the time. My bag came out last even though it had a priority tag

Related info for your journey

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

  • What are the cheapest airlines flying from Portland, Maine to Lisbon round-trip?

    KLM, at $597, was found to be the cheapest airline from Portland, Maine to Lisbon.Alternate airlines to your destination round-trip include Air Canada and United Airlines. KLM is currently priced 41% below the average price you’ll pay for this route.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Portland to Lisbon 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 Lisbon?

    Currently, January is the cheapest month in which you can book a flight from Portland, Maine to Lisbon (average of $612). Flying from Portland, Maine to Lisbon in June is currently the most expensive (average of $1,180). 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 2 airlines flying from Portland to Lisbon

Discover the top 2 airlines that operate flights from Portland to Lisbon. 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 December 18, 2024.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$550Average$1,025FlexibilityNo cancel feeOn-time69%
DeltaCheapest$590Average$1,159FlexibilityNo cancel feeOn-timeN/A
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