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$234+ Cheap flights from Maine to Porto (OPO)

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 2/2. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — OPO
Jan 31 — Feb 71
Sat 1/31
Sat 2/7
1 adult, Economy
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Cheap flight deals from Maine to Porto

Cheapest flights from Maine to Porto
Explore the most affordable flight options available from Maine to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 1, 2026.

This Kiwi.com deal was found by Cheapflights users on 12/30. 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.
Wed 12/316:30 pmBOS - OPO
1 stop11h 00mKLM
Thu 1/84:10 pmOPO - BOS
1 stop31h 45mKLM
Deal found 12/30$648
This Expedia deal was found by Cheapflights users on 12/30. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/316:30 pmBOS - OPO
1 stop11h 00mMultiple Airlines
Thu 1/811:20 amOPO - BOS
2 stops30h 10mMultiple Airlines
Deal found 12/30$683
This Rumbo deal was found by Cheapflights users on 12/30. 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 Rumbo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/318:40 pmBOS - OPO
2 stops34h 25mBrussels Airlines
Thu 1/812:55 pmOPO - BOS
2 stops29h 30mBrussels Airlines
Deal found 12/30$740
This Booking.com deal was found by Cheapflights users on 12/30. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/317:15 pmBOS - OPO
1 stop16h 30mBritish Airways
Wed 1/76:35 pmOPO - BOS
1 stop32h 20mBritish Airways
Deal found 12/30$804
This Kiwi.com deal was found by Cheapflights users on 12/30. 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.
Wed 12/318:40 pmBOS - OPO
1 stop22h 00mMultiple Airlines
Wed 1/712:55 pmOPO - BOS
2 stops53h 30mMultiple Airlines
Deal found 12/30$854
This Delta deal was found by Cheapflights users on 12/30. 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 12/316:30 pmBOS - OPO
1 stop11h 00mDelta
Thu 1/811:20 amOPO - BOS
1 stop34h 00mDelta
Deal found 12/30$950

Find flight deals from Maine to Porto

Keep the following information in mind while searching for Maine to Porto flight deals. Data was last updated January 1, 2026.

Most accurate provider

Ovago
2 stars

Most trusted provider

Ovago
2 stars

Round-trip from

$319
(oojo)

One-way from

$234
(Kiwi.com)
Provider with most accurate pricing for Portland-Porto flight deals.
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Provider most trusted by Cheapflights users for Portland-Porto flights.
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From Maine to Porto
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One-way flight from Maine to Porto
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Maine to Porto 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 January 1, 2026.
Use the filters below to find and compare flights from Maine to Porto that are best for you.

Fly from

Maine

Fly to

Porto

Route

Depart

Return

Price

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Wed 4/8

10:45 pm-3:00 pm

1 stop11h 15m

Porto

Wed 4/15

5:15 pm-7:55 pm

Nonstop7h 40m

$341

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Mon 3/9

7:45 pm-9:30 am

1 stop9h 45m

Porto

Tue 4/14

12:35 pm-8:04 pm

1 stop12h 29m

$375

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Sun 3/8

7:57 pm-9:30 am

1 stop9h 33m

Porto

Fri 4/17

6:00 am-3:40 pm

1 stop14h 40m

$382

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Mon 3/23

6:30 pm-9:30 am

1 stop11h 00m

Porto

Tue 3/31

6:00 am-3:40 pm

1 stop14h 40m

$382

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Tue 3/3

2:20 pm-9:30 am

2 stops14h 10m

Porto

Wed 4/1

6:00 am-3:40 pm

1 stop14h 40m

$387

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Tue 3/3

6:30 pm-10:30 am

1 stop11h 00m

Porto

Wed 4/15

5:00 am-6:30 pm

1 stop18h 30m

$394

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Tue 2/10

6:30 pm-10:30 am

1 stop11h 00m

Porto

Mon 2/16

4:10 pm-1:25 pm

1 stop26h 15m

$396

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Wed 3/11

9:40 pm-1:15 pm

1 stop11h 35m

Porto

Tue 4/14

12:15 pm-7:55 pm

1 stop12h 40m

$400

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Wed 3/11

9:40 pm-1:15 pm

1 stop11h 35m

Porto

Wed 4/15

6:20 am-5:40 pm

1 stop16h 20m

$404

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Tue 4/28

7:15 am-9:45 am

2 stops21h 30m

Porto

Thu 5/14

12:35 pm-6:13 pm

1 stop10h 38m

$405

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/30

Showing 1-10 of 30 results
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Best time to book a flight from Maine to Porto

Have a flexible travel schedule? Discover the best time to fly to Porto 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 Porto
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 Porto. 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 into for flights to Porto from Maine?

    Porto (OPO), located 6.8 mi from the city center, is the airport you fly into when you book flights from Maine to Porto.

  • How long is the flight from Maine to Porto?

    A quick flight from Maine to Porto can take about 9h 45m. United Airlines provides one of the quickest options available for as low as $375. Maine and Porto are separated by a distance of 3134 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Maine to Porto 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 Porto?

Book flights to Porto if you plan to visit one of these locations
Aveiro
Arcos de Valdevez
Coimbra
Vila Nova de Gaia

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