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Lisbon

$529+ Cheap flights from Portland, ME (PWM) to Lisbon (LIS)

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 8/30. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — LIS
May 29 — Jun 51
Fri 5/29
Fri 6/5
1 adult, Economy
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Cheap flight deals from Portland to Lisbon

Cheapest flights from Portland to Lisbon
Explore the most affordable flight options available from Portland to Lisbon. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 29, 2026.

This KLM deal was found by Cheapflights users on 4/25. 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 4/292:51 pm
PWM
-
LIS
1 stop12h 09m
KLM
Mon 5/47:45 pm
LIS
-
PWM
2 stops25h 12m
KLM
Deal found 4/25$878
This Air France deal was found by Cheapflights users on 4/26. 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 France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/292:51 pm
PWM
-
LIS
2 stops15h 24m
Multiple Airlines
Mon 5/47:45 pm
LIS
-
PWM
2 stops25h 12m
Multiple Airlines
Deal found 4/26$882
This Air France 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 France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/292:51 pm
PWM
-
LIS
2 stops14h 54m
Air France
Mon 5/46:50 pm
LIS
-
PWM
2 stops24h 21m
Air France
Deal found 4/29$890
This United Airlines deal was found by Cheapflights users on 4/25. 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 4/293:22 pm
PWM
-
LIS
1 stop11h 58m
United Airlines
Mon 5/411:25 am
LIS
-
PWM
2 stops32h 24m
United Airlines
Deal found 4/25$918
This United Airlines deal was found by Cheapflights users on 4/25. 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.
Thu 4/309:00 am
PWM
-
LIS
2 stops20h 30m
United Airlines
Wed 5/612:55 pm
LIS
-
PWM
2 stops37h 24m
United Airlines
Deal found 4/25$928
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/292:51 pm
PWM
-
LIS
1 stop12h 09m
Delta
Mon 5/410:00 am
LIS
-
PWM
1 stop19h 46m
Delta
Deal found 4/28$938
This British Airways deal was found by Cheapflights users on 4/24. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/93:03 pm
PWM
-
LIS
2 stops19h 32m
Multiple Airlines
Fri 10/167:20 am
LIS
-
PWM
2 stops21h 04m
Multiple Airlines
Deal found 4/24$974

Find 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 April 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$974
(British Airways)

One-way from

$529
(Air France)

Popular in

December

Cheapest in

February

Average price

$1,233
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 Lisbon Humberto Delgado
Search Deals
One-way flight from Portland to Lisbon Humberto Delgado
Search Deals
Highest demand for flights based on searches. 10% potential increase in price ($123 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 13% potential price decrease ($126 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
Search Deals

Cheapflights Fare Finder

 
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 April 29, 2026.
Use the filters below to find and compare flights from Portland to Lisbon that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortlandLisbon

PWM - LIS

PWMLIS

Portland

Fri 10/9

3:03 pm-3:35 pm

2 stops19h 32m

Lisbon Humberto Delgado

Fri 10/16

7:20 am-11:24 pm

2 stops21h 04m

$974

PortlandLisbon

PWM - LIS

PWMLIS

Portland

Fri 10/9

6:00 am-9:20 am

2 stops22h 20m

Lisbon Humberto Delgado

Fri 10/16

10:25 am-11:27 pm

1 stop18h 02m

$1,047
Quickest round-trip

PortlandLisbon

PWM - LIS

PWMLIS

Portland

Sun 8/9

6:46 pm-9:05 am

1 stop9h 19m

Lisbon Humberto Delgado

Sun 8/16

11:05 am-8:17 pm

1 stop14h 12m

$1,055

PortlandLisbon

PWM - LIS

PWMLIS

Portland

Sun 8/9

5:15 am-10:30 am

1 stop24h 15m

Lisbon Humberto Delgado

Sun 8/16

1:00 pm-10:02 am

2 stops50h 02m

$1,084

PortlandLisbon

PWM - LIS

PWMLIS

Portland

Thu 6/11

3:16 pm-1:40 pm

2 stops17h 24m

Lisbon Humberto Delgado

Thu 6/18

11:25 am-11:51 pm

2 stops41h 26m

$1,232

PortlandLisbon

PWM - LIS

PWMLIS

Portland

Wed 5/27

3:16 pm-8:20 am

1 stop12h 04m

Lisbon Humberto Delgado

Mon 6/1

10:25 am-6:25 pm

1 stop13h 00m

$1,245
Cheapest one-way
Quickest one-way

PortlandLisbon

PWM - LIS

PWMLIS

Portland

Sun 8/30

6:46 pm-9:05 am

1 stop9h 19m

$529

PortlandLisbon

PWM - LIS

PWMLIS

Portland

Mon 7/20

5:15 am-8:20 am

2 stops22h 05m

$648

PortlandLisbon

PWM - LIS

PWMLIS

Portland

Sun 8/30

7:00 am-11:00 am

3 stops47h 00m

$655

PortlandLisbon

PWM - LIS

PWMLIS

Portland

Mon 7/20

7:00 am-10:15 am

3 stops46h 15m

$718

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/26

Showing 1-10 of 11 resultsSorted by cheapest first
1
2

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 April.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice 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.

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 April 29, 2026.
See what other customers who have flown with United Airlines from Portland to Lisbon have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,680 reviews

Entertainment

7.1

Overall

7.4

Comfort

7.3

Crew

8.1

Boarding

7.7

Food

6.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

DFW - EWR

The flight was on time. Crew was friendly. Will fly again. The seats was comfortable.
United Airlines
7.4
Good
9,680 reviews
United Airlines
7.4
Good
9,680 reviews

Entertainment

7.1

Overall

7.4

Comfort

7.3

Crew

8.1

Boarding

7.7

Food

6.6

Reviews

1 / 20
8.0
Excellent

Anonymous,Apr 2026

DFW - EWR

The flight was on time. Crew was friendly. Will fly again. The seats was comfortable.

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.

  • How long is the flight from Portland, Maine to Lisbon?

    A quick flight from Portland, Maine to Lisbon can take about 9h 19m. United Airlines provides one of the quickest options available for as low as $1,055. Portland, Maine and Lisbon are separated by a distance of 3123 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What is the cheapest airline to fly from Portland, Maine to Lisbon round-trip?

    United Airlines, at $550, was found to be the cheapest airline from Portland, Maine to Lisbon.. United Airlines is currently priced 46% 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.

See more FAQs

Traveling to a place near Lisbon?

Book flights to Lisbon if you plan to visit one of these locations
Fátima
Ericeira
Oeiras
Beja
Costa da Caparica
Torres Vedras
Nazaré
Colares
Sesimbra

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Top airline flying from Portland to Lisbon

Discover the top airline 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 April 29, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$550Average$729FlexibilityNo cancel feeOn-time69%

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