Portugal

$243+ Cheap flights from Maine 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 4/26. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — LIS
Apr 5 — Apr 121
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Cheap flight deals from Maine to Portugal

Cheapest flights from Maine to Portugal
Explore the most affordable flight options available from Maine to Portugal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 6, 2026.

This Mytrip deal was found by Cheapflights users on 3/4. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/2611:00 pm
BOS
-
FAO
1 stop32h 50m
Icelandair
Mon 5/111:50 pm
FAO
-
BOS
1 stop12h 55m
Icelandair
Deal found 3/4$369
This Super.com deal was found by Cheapflights users on 3/2. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/16:00 pm
BOS
-
OPO
1 stop18h 00m
TAP AIR PORTUGAL
Sun 12/66:55 am
OPO
-
BOS
1 stop12h 45m
TAP AIR PORTUGAL
Deal found 3/2$383
This Kiwi.com deal was found by Cheapflights users on 3/1. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/3010:45 pm
BOS
-
OPO
1 stop13h 15m
TAP AIR PORTUGAL
Tue 4/75:05 am
OPO
-
BOS
1 stop14h 40m
TAP AIR PORTUGAL
Deal found 3/1$391
This Super.com deal was found by Cheapflights users on 3/4. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/1410:45 pm
BOS
-
OPO
1 stop19h 25m
TAP AIR PORTUGAL
Mon 10/1910:30 pm
OPO
-
BOS
1 stop26h 50m
TAP AIR PORTUGAL
Deal found 3/4$399
This Super.com deal was found by Cheapflights users on 3/3. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/610:45 pm
BOS
-
OPO
1 stop16h 40m
TAP AIR PORTUGAL
Wed 4/155:05 am
OPO
-
BOS
1 stop20h 15m
TAP AIR PORTUGAL
Deal found 3/3$410
This FlightHub deal was found by Cheapflights users on 3/2. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/276:05 pm
BOS
-
OPO
1 stop9h 55m
TAP AIR PORTUGAL
Thu 10/19:00 am
OPO
-
BOS
1 stop10h 45m
TAP AIR PORTUGAL
Deal found 3/2$411
This oojo deal was found by Cheapflights users on 3/1. 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.
Mon 4/610:45 pm
BOS
-
OPO
1 stop15h 15m
TAP AIR PORTUGAL
Mon 4/139:15 pm
OPO
-
BOS
1 stop22h 30m
TAP AIR PORTUGAL
Deal found 3/1$412
This oojo deal was found by Cheapflights users on 3/4. 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.
Sun 11/110:10 pm
BOS
-
OPO
1 stop9h 50m
TAP AIR PORTUGAL
Fri 11/1312:00 pm
OPO
-
BOS
1 stop13h 10m
TAP AIR PORTUGAL
Deal found 3/4$415
This United Airlines deal was found by Cheapflights users on 3/1. 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 3/26:27 pm
BOS
-
OPO
1 stop10h 03m
United Airlines
Tue 3/1712:35 pm
OPO
-
BOS
1 stop11h 40m
United Airlines
Deal found 3/1$416
This Iberia deal was found by Cheapflights users on 3/3. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/285:45 pm
BOS
-
OPO
1 stop14h 00m
Iberia
Wed 11/48:20 am
OPO
-
BOS
1 stop11h 55m
Iberia
Deal found 3/3$419
This United Airlines deal was found by Cheapflights users on 3/2. 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 3/39:40 am
BOS
-
OPO
2 stops18h 50m
United Airlines
Tue 3/1712:35 pm
OPO
-
BOS
1 stop11h 40m
United Airlines
Deal found 3/2$421
This oojo deal was found by Cheapflights users on 3/1. 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.
Tue 4/285:40 pm
BOS
-
LIS
2 stops23h 25m
Multiple Airlines
Fri 5/159:15 pm
LIS
-
BOS
1 stop23h 20m
Multiple Airlines
Deal found 3/1$502

Find flight deals from Maine to Portugal

Keep the following information in mind while searching for Maine to Portugal flight deals. Data was last updated March 6, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$369
(Mytrip)

One-way from

$217
(oojo)

Popular in

December

Cheapest in

February

Average price

$762
Provider with most accurate pricing for Portland-Lisbon Humberto Delgado flight deals.
Provider most trusted by Cheapflights users for Portland-Lisbon Humberto Delgado flights.
From Maine to Portugal
One-way flight from Maine to Portugal
Highest demand for flights based on searches. 38% potential increase in price ($755 potential increase over avg. RT price).
Cheapest flight prices on average. 44% potential price decrease ($374 potential savings vs. average RT price).
Average for round-trip flights in March 2026

Cheapflights Fare Finder

 
Customize your flight search to find flights from Maine 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 March 6, 2026.
Use the filters below to find and compare flights from Maine to Portugal that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Wed 4/8

6:55 pm-6:20 pm

1 stop18h 25m

Porto

Wed 4/15

5:55 am-1:33 pm

1 stop12h 38m

$447

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Tue 3/10

9:30 pm-10:30 am

1 stop33h 00m

Porto

Tue 3/17

9:55 am-2:20 pm

1 stop32h 25m

$488

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Tue 4/28

7:05 pm-3:25 pm

1 stop15h 20m

Porto

Thu 5/14

5:00 am-4:25 pm

1 stop16h 25m

$514

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Mon 4/27

9:30 am-9:45 am

2 stops19h 15m

Porto

Fri 5/8

6:00 am-2:26 pm

2 stops37h 26m

$528

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Mon 4/27

9:30 am-9:45 am

2 stops19h 15m

Porto

Wed 9/30

2:25 pm-9:50 am

1 stop24h 25m

$535

BostonVelas

BOS - SJZ

BOSSJZ

Boston Logan Intl

Tue 4/14

9:15 pm-3:55 pm

1 stop14h 40m

Velas Sao Jorge Island

Tue 4/21

9:25 am-7:50 pm

1 stop14h 25m

$554

BostonVelas

BOS - SJZ

BOSSJZ

Boston Logan Intl

Tue 6/2

9:15 pm-8:50 am

1 stop7h 35m

Velas Sao Jorge Island

Tue 6/16

12:10 pm-7:50 pm

1 stop11h 40m

$566
Quickest round-trip

BostonLajes

BOS - TER

BOSTER

Boston Logan Intl

Sun 3/22

10:25 pm-2:20 pm

1 stop12h 55m

Lajes

Tue 3/31

6:05 pm-7:50 pm

Nonstop5h 45m

$577

BostonLajes

BOS - TER

BOSTER

Boston Logan Intl

Mon 4/20

9:15 pm-6:20 am

Nonstop5h 05m

Lajes

Tue 4/21

8:15 pm-7:50 pm

1 stop27h 35m

$580

BostonPico Island

BOS - PIX

BOSPIX

Boston Logan Intl

Thu 4/2

9:15 pm-5:50 pm

2 stops40h 35m

Pico Island

Thu 4/9

9:25 am-7:50 pm

1 stop14h 25m

$590

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/4

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

Have a flexible travel schedule? Discover the best time to fly to Portugal from Maine 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 Maine to Portugal
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 Maine to Portugal. 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 Maine to Portugal?

    For as low as $447, Icelandair can have you in Portugal from Maine in 18h 25m. Maine and Portugal are separated by a distance of 3134 mi. This flight may include one or multiple stops.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Maine 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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Alternative routes for Maine to Portugal

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

Top airline flying from Maine to Portugal

Discover the top airline that operate flights from Maine 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 March 6, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$550Average$721FlexibilityNo cancel feeOn-time69%

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