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Portugal

$480+ 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 10/26. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — LIS
Jul 12 — Jul 191
Sun 7/12
Sun 7/19
1 adult, Economy
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Cheap 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, 2026.

This oojo deal was found by Cheapflights users on 6/7. 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.
Thu 12/310:00 am
PWM
-
OPO
2 stops25h 55m
Scandinavian Airlines
Mon 12/711:55 am
OPO
-
PWM
2 stops40h 54m
Scandinavian Airlines
Deal found 6/7$704
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/75:06 pm
PWM
-
OPO
1 stop11h 24m
United Airlines
Thu 12/106:00 am
OPO
-
PWM
2 stops21h 57m
United Airlines
Deal found 6/11$717
This United Airlines deal was found by Cheapflights users on 6/8. 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 12/59:45 am
PWM
-
OPO
2 stops42h 45m
United Airlines
Tue 12/812:35 pm
OPO
-
PWM
2 stops37h 52m
United Airlines
Deal found 6/8$738
This Air Canada deal was found by Cheapflights users on 6/7. 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 12/76:00 am
PWM
-
LIS
2 stops22h 50m
Air Canada
Thu 12/101:00 pm
LIS
-
PWM
2 stops38h 57m
Air Canada
Deal found 6/7$778
This Delta deal was found by Cheapflights users on 6/8. 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.
Sun 10/251:35 pm
PWM
-
LIS
2 stops17h 45m
Delta
Fri 10/305:00 am
LIS
-
PWM
2 stops22h 49m
Delta
Deal found 6/8$787
This United Airlines deal was found by Cheapflights users on 6/7. 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 12/33:15 pm
PWM
-
OPO
1 stop13h 15m
United Airlines
Mon 12/712:35 pm
OPO
-
PWM
2 stops35h 49m
United Airlines
Deal found 6/7$788
This United Airlines deal was found by Cheapflights users on 6/7. 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 12/73:15 pm
PWM
-
LIS
1 stop11h 55m
United Airlines
Thu 12/1011:55 am
LIS
-
PWM
1 stop12h 29m
United Airlines
Deal found 6/7$790
This American Airlines deal was found by Cheapflights users on 6/8. 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 10/256:00 am
PWM
-
LIS
1 stop23h 05m
American Airlines
Fri 10/308:20 am
LIS
-
PWM
2 stops17h 45m
American Airlines
Deal found 6/8$794
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/305:06 pm
PWM
-
OPO
1 stop12h 24m
United Airlines
Sat 11/76:00 am
OPO
-
PWM
2 stops22h 59m
United Airlines
Deal found 6/11$817
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.
Sun 10/256:00 am
PWM
-
LIS
1 stop22h 10m
United Airlines
Fri 10/3011:55 am
LIS
-
PWM
2 stops24h 24m
United Airlines
Deal found 6/10$866
This United Airlines deal was found by Cheapflights users on 6/7. 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 7/63:46 pm
PWM
-
LIS
1 stop11h 34m
United Airlines
Sun 7/126:45 am
LIS
-
PWM
2 stops19h 56m
United Airlines
Deal found 6/7$1,006
This United Airlines deal was found by Cheapflights users on 6/9. 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.
Tue 9/17:35 pm
PWM
-
LIS
1 stop9h 55m
United Airlines
Sun 9/610:25 am
LIS
-
PWM
2 stops28h 39m
United Airlines
Deal found 6/9$1,010

Find 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, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$704
(oojo)

One-way from

$480
(oojo)

Popular in

December

Cheapest in

February
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
One-way flight from Portland to Portugal
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($134 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 12% potential price decrease ($121 potential savings vs. average RT price).
Search Deals

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortlandPorto

PWM - OPO

PWMOPO

Portland

Mon 12/7

5:06 pm-9:30 am

1 stop11h 24m

Porto

Thu 12/10

6:00 am-10:57 pm

2 stops21h 57m

$717

PortlandLisbon

PWM - LIS

PWMLIS

Portland

Sun 10/25

1:35 pm-11:20 am

2 stops17h 45m

Lisbon Humberto Delgado

Fri 10/30

5:00 am-11:49 pm

2 stops22h 49m

$787

PortlandLisbon

PWM - LIS

PWMLIS

Portland

Sun 10/25

6:00 am-8:10 am

1 stop22h 10m

Lisbon Humberto Delgado

Fri 10/30

11:55 am-8:19 am

2 stops24h 24m

$866
Quickest round-trip

PortlandLisbon

PWM - LIS

PWMLIS

Portland

Mon 7/6

3:46 pm-8:20 am

1 stop11h 34m

Lisbon Humberto Delgado

Sun 7/12

6:45 am-9:41 pm

2 stops19h 56m

$1,006

PortlandLisbon

PWM - LIS

PWMLIS

Portland

Tue 9/1

7:35 pm-10:30 am

1 stop9h 55m

Lisbon Humberto Delgado

Sun 9/6

10:25 am-10:04 am

2 stops28h 39m

$1,010

PortlandLisbon

PWM - LIS

PWMLIS

Portland

Thu 8/27

7:35 pm-10:30 am

1 stop9h 55m

Lisbon Humberto Delgado

Sat 9/19

5:05 am-11:32 pm

2 stops23h 27m

$1,064

PortlandPonta Delgada

PWM - PDL

PWMPDL

Portland

Mon 10/26

6:30 am-6:35 pm

2 stops33h 05m

Ponta Delgada Nordela

Fri 10/30

8:30 am-1:38 pm

2 stops32h 08m

$1,237

PortlandPonta Delgada

PWM - PDL

PWMPDL

Portland

Wed 7/8

5:15 am-8:40 am

2 stops23h 25m

Ponta Delgada Nordela

Tue 7/14

11:00 am-6:29 pm

1 stop11h 29m

$1,384
Cheapest one-way

PortlandPonta Delgada

PWM - PDL

PWMPDL

Portland

Mon 10/26

6:30 am-6:35 pm

2 stops33h 05m

$480

PortlandLisbon

PWM - LIS

PWMLIS

Portland

Wed 7/1

5:01 pm-11:40 pm

3 stops49h 39m

$605

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/9

Showing 1-10 of 14 resultsSorted by cheapest first
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
No data available for this route at this time. Please check back soon.

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, 2026.
See what other customers who have flown with United Airlines from Portland to Portugal 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
9,810 reviews

Comfort

7.3

Crew

8.1

Entertainment

7.1

Food

6.6

Overall

7.4

Boarding

7.7

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.
United Airlines
7.4
Good
9,810 reviews
United Airlines
7.4
Good
9,810 reviews

Comfort

7.3

Crew

8.1

Entertainment

7.1

Food

6.6

Overall

7.4

Boarding

7.7

Reviews

1 / 20
4.0
Okay

Dynasty,May 2026

LAX - EWR

The food wasn’t nice - Hosts were not that kind.

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.

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

    For as low as $717, United Airlines can have you in Portugal from Portland, Maine in 11h 24m. The distance between Portland, Maine and Portugal is about 3071 mi. This flight may include one or multiple stops.

  • 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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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, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$550Average$679FlexibilityNo cancel feeOn-time69%

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