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Maine

$314+ Cheap flights from Portugal to Maine

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 6/2. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — PWM
Apr 19 — Apr 261
Sun 4/19
Sun 4/26
1 adult, Economy
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Cheap flight deals from Portugal to Maine

Cheapest flights from Portugal to Maine
Explore the most affordable flight options available from Portugal to Maine. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 20, 2026.

This KLM deal was found by Cheapflights users on 3/16. 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.
Mon 4/137:00 pm
OPO
-
BOS
1 stop23h 13m
KLM
Mon 4/205:10 pm
BOS
-
OPO
1 stop17h 15m
KLM
Deal found 3/16$503
This Delta deal was found by Cheapflights users on 3/19. 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 5/135:00 am
OPO
-
BOS
1 stop16h 25m
Delta
Tue 5/267:00 pm
BOS
-
OPO
1 stop15h 25m
Delta
Deal found 3/19$508
This KLM deal was found by Cheapflights users on 3/18. 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 5/217:10 pm
OPO
-
BOS
1 stop26h 15m
Multiple Airlines
Mon 6/85:00 pm
BOS
-
OPO
1 stop12h 30m
Multiple Airlines
Deal found 3/18$511
This KLM deal was found by Cheapflights users on 3/16. 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.
Sat 4/45:00 am
OPO
-
BOS
1 stop16h 25m
KLM
Thu 4/96:55 pm
BOS
-
OPO
1 stop19h 20m
KLM
Deal found 3/16$513
This Delta deal was found by Cheapflights users on 3/16. 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 4/15:00 am
LIS
-
BOS
1 stop13h 13m
Delta
Sun 4/511:25 pm
BOS
-
LIS
Nonstop6h 20m
Delta
Deal found 3/16$515
This Delta deal was found by Cheapflights users on 3/16. 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 5/196:15 am
OPO
-
BOS
1 stop18h 20m
Delta
Thu 5/288:25 pm
BOS
-
OPO
1 stop17h 50m
Delta
Deal found 3/16$515
This KLM deal was found by Cheapflights users on 3/15. 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.
Mon 5/45:00 am
LIS
-
BOS
1 stop13h 10m
KLM
Mon 6/16:55 pm
BOS
-
LIS
1 stop11h 00m
KLM
Deal found 3/15$516
This Delta deal was found by Cheapflights users on 3/18. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/45:00 am
OPO
-
BOS
2 stops20h 20m
Delta
Sun 4/128:25 pm
BOS
-
OPO
1 stop16h 45m
Delta
Deal found 3/18$519
This KLM deal was found by Cheapflights users on 3/16. 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.
Sat 4/45:00 am
OPO
-
BOS
1 stop16h 25m
KLM
Wed 4/85:10 pm
BOS
-
OPO
1 stop17h 15m
KLM
Deal found 3/16$520
This Delta deal was found by Cheapflights users on 3/20. 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.
Mon 5/46:30 am
OPO
-
BOS
2 stops19h 30m
Delta
Mon 5/114:35 pm
BOS
-
OPO
1 stop13h 05m
Delta
Deal found 3/20$525
This Air France deal was found by Cheapflights users on 3/17. 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 France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/15:35 am
LIS
-
BOS
1 stop13h 02m
Multiple Airlines
Mon 6/84:35 pm
BOS
-
LIS
1 stop13h 20m
Multiple Airlines
Deal found 3/17$526
This KLM deal was found by Cheapflights users on 3/17. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/3012:45 pm
LIS
-
BOS
Nonstop7h 36m
Multiple Airlines
Sun 4/55:10 pm
BOS
-
LIS
1 stop10h 40m
Multiple Airlines
Deal found 3/17$532

Find flight deals from Portugal to Maine

Keep the following information in mind while searching for Portugal to Maine flight deals. Data was last updated March 20, 2026.

Round-trip from

$503
(KLM)

One-way from

$314
(Mytrip)
From Portugal to Maine
Search Deals
One-way flight from Portugal to Maine
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Portugal to Maine 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 March 20, 2026.
Use the filters below to find and compare flights from Portugal to Maine that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortoBoston

OPO - BOS

OPOBOS

Porto

Sat 4/4

5:00 am-4:25 pm

1 stop16h 25m

Boston Logan Intl

Sun 4/12

8:25 pm-6:10 pm

1 stop16h 45m

$513

LisbonBoston

LIS - BOS

LISBOS

Lisbon Humberto Delgado

Mon 5/4

5:00 am-1:10 pm

1 stop13h 10m

Boston Logan Intl

Mon 6/1

6:55 pm-10:55 am

1 stop11h 00m

$516

LisbonBoston

LIS - BOS

LISBOS

Lisbon Humberto Delgado

Wed 4/1

12:45 pm-3:21 pm

Nonstop7h 36m

Boston Logan Intl

Sun 4/5

11:25 pm-10:45 am

Nonstop6h 20m

$532

LisbonBoston

LIS - BOS

LISBOS

Lisbon Humberto Delgado

Thu 4/16

12:45 pm-3:21 pm

Nonstop7h 36m

Boston Logan Intl

Sat 4/25

11:25 pm-10:45 am

Nonstop6h 20m

$532

PortoBoston

OPO - BOS

OPOBOS

Porto

Fri 5/1

11:25 am-6:30 pm

1 stop12h 05m

Boston Logan Intl

Fri 5/8

5:10 pm-3:25 pm

1 stop17h 15m

$591

LisbonBoston

LIS - BOS

LISBOS

Lisbon Humberto Delgado

Thu 4/2

7:45 pm-1:13 pm

1 stop22h 28m

Boston Logan Intl

Sun 4/5

5:10 pm-8:50 am

1 stop10h 40m

$613

LisbonBoston

LIS - BOS

LISBOS

Lisbon Humberto Delgado

Wed 6/3

5:00 am-1:05 pm

1 stop13h 05m

Boston Logan Intl

Wed 6/17

6:55 pm-10:55 am

1 stop11h 00m

$621
Quickest round-trip

LisbonBoston

LIS - BOS

LISBOS

Lisbon Humberto Delgado

Fri 5/1

12:45 pm-3:15 pm

Nonstop7h 30m

Boston Logan Intl

Sun 5/10

11:25 pm-10:45 am

Nonstop6h 20m

$635

Ponta DelgadaBoston

PDL - BOS

PDLBOS

Ponta Delgada Nordela

Wed 4/15

3:30 pm-2:45 pm

1 stop27h 15m

Boston Logan Intl

Wed 4/22

9:15 pm-6:20 am

Nonstop5h 05m

$638

LisbonBoston

LIS - BOS

LISBOS

Lisbon Humberto Delgado

Fri 5/1

5:05 am-3:40 pm

1 stop15h 35m

Boston Logan Intl

Fri 5/8

8:05 pm-10:45 pm

1 stop21h 40m

$672

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/16

Showing 1-10 of 60 resultsSorted by cheapest first
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Best time to book a flight from Portugal to Maine

Have a flexible travel schedule? Discover the best time to fly to Maine from Portugal 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 Portugal to Maine
No data available for this route at this time. Please check back soon.

Related info for your journey

Find useful and relevant information for your journey from Portugal to Maine. 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 Portugal to Maine?

    KLM, Delta, and Virgin Atlantic can get you from Portugal to Maine in just under 7h 36m. Your travel time can differ by up to 15h 37m. Airlines will cover a distance of 3182 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • Can I find deals for flights from Portugal to Maine that include hotel bookings?

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

  • How can I find direct flights from Portugal to Maine?

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

  • Can I find deals for business class flights from Portugal to Maine?

    Yes. Cheapflights offers flight deals from Portugal to Maine 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

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Alternative routes for Portugal to Maine

See prices for flight routes from nearby airports that may be better suited for you.
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