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$308+ 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 5/12. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — OPO
may. 6 — may. 131
mar. 5/6
mar. 5/13
1 adult, Economy
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Cheap flight deals from Maine to Porto

Keep the following information in mind while searching for Maine to Porto flight deals. Data was last updated mayo 1, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
2 stars

Round-trip from

$608
(oojo)

One-way from

$316
(PLAY)
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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Find 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 mayo 1, 2025.

This Air Canada 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 Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 10/66:00 amBOS - OPO
2 stops24h 25mAir Canada
mar. 10/216:00 amOPO - BOS
2 stops20h 22mAir Canada
Deal found 4/29$604
This Kiwi.com deal was found by Cheapflights users on 4/30. 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.
jue. 5/14:15 pmBOS - OPO
2 stops39h 20mMultiple Airlines
mié. 5/1410:00 pmOPO - BOS
1 stop28h 05mMultiple Airlines
Deal found 4/30$605
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 8/46:50 pmBOS - OPO
1 stop9h 45mUnited Airlines
mar. 8/2612:50 pmOPO - BOS
1 stop25h 45mUnited Airlines
Deal found 4/29$608
This SWISS deal was found by Cheapflights users on 4/30. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 8/79:40 pmBOS - OPO
1 stop32h 45mSWISS
mié. 8/2712:20 pmOPO - BOS
1 stop12h 35mSWISS
Deal found 4/30$610
This Booking.com deal was found by Cheapflights users on 4/30. 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.
lun. 8/1111:15 pmBOS - OPO
Nonstop6h 40mTAP AIR PORTUGAL
jue. 8/219:00 amOPO - BOS
1 stop10h 20mTAP AIR PORTUGAL
Deal found 4/30$613
This British Airways deal was found by Cheapflights users on 4/30. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 7/17:40 pmBOS - OPO
1 stop18h 50mBritish Airways
mar. 7/88:40 pmOPO - BOS
1 stop19h 40mBritish Airways
Deal found 4/30$615
This Lufthansa deal was found by Cheapflights users on 4/30. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 8/18:05 pmBOS - OPO
1 stop22h 15mLufthansa
jue. 8/286:15 amOPO - BOS
1 stop16h 25mLufthansa
Deal found 4/30$616
This Cheapflightsfares deal was found by Cheapflights users on 4/30. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 9/19:20 pmBOS - OPO
1 stop9h 20mIberia
sáb. 9/1312:20 pmOPO - BOS
1 stop12h 30mIberia
Deal found 4/30$622
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 5/281:20 pmBOS - OPO
2 stops13h 15mAmerican Airlines
mié. 9/1012:20 pmOPO - BOS
2 stops15h 02mAmerican Airlines
Deal found 4/29$628
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.
lun. 6/306:50 pmBOS - OPO
1 stop15h 40mDelta
mar. 8/56:35 amOPO - BOS
1 stop18h 45mDelta
Deal found 4/28$631
This KLM 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 7/18:15 pmBOS - OPO
1 stop14h 20mKLM
mar. 7/156:35 amOPO - BOS
1 stop12h 00mKLM
Deal found 4/29$643
This oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 9/197:30 amPWM - OPO
2 stops27h 20mTurkish Airlines
dom. 10/55:10 pmOPO - PWM
2 stops49h 06mTurkish Airlines
Deal found 4/28$920

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 mayo 1, 2025.
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

dom. 5/18

10:20 pm-5:00 pm

1 stop13h 40m

Porto

sáb. 10/25

5:40 pm-8:20 pm

Nonstop7h 40m

$608

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

dom. 5/18

5:05 pm-6:15 pm

1 stop20h 10m

Porto

sáb. 10/25

8:40 am-3:25 pm

1 stop11h 45m

$610

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

mar. 7/1

6:03 pm-9:20 am

2 stops34h 17m

Porto

jue. 8/28

12:10 pm-5:48 pm

2 stops34h 38m

$611

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

mar. 7/1

7:13 am-7:30 pm

2 stops31h 17m

Porto

mar. 7/8

8:40 pm-11:34 pm

2 stops31h 54m

$612

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

mié. 5/14

7:15 pm-10:35 pm

2 stops22h 20m

Porto

mié. 5/21

2:05 pm-5:50 pm

3 stops32h 45m

$614

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

mar. 7/1

5:50 am-11:30 am

2 stops24h 40m

Porto

lun. 8/25

6:15 am-6:13 pm

2 stops16h 58m

$620

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

mié. 5/28

1:20 pm-7:35 am

2 stops13h 15m

Porto

mié. 9/10

12:20 pm-10:22 pm

2 stops15h 02m

$628

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

lun. 6/30

6:50 pm-3:30 pm

1 stop15h 40m

Porto

mar. 8/5

6:35 am-8:20 pm

1 stop18h 45m

$631

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

lun. 5/12

10:50 pm-8:00 am

1 stop28h 10m

Porto

jue. 5/22

8:40 am-9:05 pm

1 stop17h 25m

$637

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

mar. 7/1

8:15 pm-3:35 pm

1 stop14h 20m

Porto

mar. 7/15

6:35 am-1:35 pm

1 stop12h 00m

$643

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

Showing 1-10 of 34 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

What is the cheapest time of day to fly from ME to OPO?

Find hourly flight availability from Maine to Porto. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated mayo 1, 2025.

When flying from Maine to Porto, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Porto by month

Plan your trip to Porto by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Porto ranges from 0.7 - 7.7 inches per month. December is typically the wettest month, when rainfall can reach 7.7 in. July is typically the driest time to visit Porto when rainfall is around 0.7 in.

Temperature in Porto by month

Plan your trip to Porto by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Porto, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 68.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 48.2 F).

Reviews of airlines servicing Porto

Get insights into the airlines that provide service to Porto. 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 Porto. Reviews last updated mayo 1, 2025.
Get a feel of what it's like to fly with Delta, KLM and Azores Airlines from Maine to Porto by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,934 reviews

Overall

8.0

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,934 reviews
Delta
8.0
Very good
7,934 reviews

Overall

8.0

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
KLM
7.8
Good
1,334 reviews
Delta
8.0
Very good
7,934 reviews

Overall

8.0

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Azores Airlines
7.6
Good
66 reviews
Delta
8.0
Very good
7,934 reviews

Overall

8.0

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Austrian Airlines
7.6
Good
781 reviews
Delta
8.0
Very good
7,934 reviews

Overall

8.0

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
SWISS
7.5
Good
1,588 reviews
Delta
8.0
Very good
7,934 reviews

Overall

8.0

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Food

7.3

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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.

  • What are the cheapest airlines to fly from Maine to Porto one-way?

    One-way options have recently been found by users for as low as $316 on PLAY. Other airlines that offer cheap prices include Iberia from $343 and British Airways from $423 one-way.

  • 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.

  • What is the cheapest month to book a flight from Maine to Porto?

    Currently, January is the cheapest month in which you can book a flight from Maine to Porto (average of $523). Flying from Maine to Porto in June is currently the most expensive (average of $1,071). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Maine?

Book flights to Maine if you plan to visit one of these locations
Aveiro
Coimbra
Matosinhos
Arcos de Valdevez

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Alternative routes for Maine to Porto

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