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$300+ Cheap flights from Boston (BOS) 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.
BOS — OPO
May 3 — May 101
Sat 5/3
Sat 5/10
1 adult, Economy
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Find cheap flights from Boston to Porto with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

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3. Compare prices and book

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Cheapflights Tip: The best prices from Boston Logan Intl to Porto are usually found in January or November, booked 40 days in advance, depart on a Tuesday or Friday and return on a Monday

Cheap flight deals from Boston to Porto

Discover tips and strategies to find the most affordable flight options for your journey from Boston (BOS) to Porto (OPO). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated April 28, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$599
(eDestinos)

One-way from

$300
(Iberia)

Popular in

June

Cheapest in

January

Average price

$684

Good round-trip deal

$680 or less

Good one-way deal

$321 or less
Provider with most accurate pricing for Boston Logan Intl-Porto flight deals.
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Provider most trusted by Cheapflights users for Boston Logan Intl-Porto flights.
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From Boston Logan Intl to Porto
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One-way flight from Boston Logan Intl to Porto
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Highest demand for flights based on searches. 16% potential increase in price ($129 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($17 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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Price to beat on a round-trip flight from Boston Logan Intl to Porto.
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Price to beat on a one-way flight from Boston Logan Intl to Porto.
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Find flight deals from Boston to Porto

Cheapest flights from Boston to Porto
Explore the most affordable flight options available from Boston to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 28, 2025.

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.
Mon 8/48:59 pmBOS - OPO
2 stops15h 41mDelta
Thu 8/219:20 amOPO - BOS
2 stops27h 01mDelta
Deal found 4/28$599
This TAP AIR PORTUGAL 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 TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2211:15 pmBOS - OPO
Nonstop6h 40mTAP AIR PORTUGAL
Tue 10/711:55 amOPO - BOS
1 stop13h 10mTAP AIR PORTUGAL
Deal found 4/28$600
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/289:20 pmBOS - OPO
1 stop9h 20mIberia
Wed 9/1012:20 pmOPO - BOS
1 stop12h 30mIberia
Deal found 4/28$601
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/114:15 pmBOS - OPO
3 stops33h 35mMultiple Airlines
Fri 5/168:45 pmOPO - BOS
2 stops22h 15mMultiple Airlines
Deal found 4/28$602
This SWISS 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/225:05 pmBOS - OPO
1 stop33h 50mSWISS
Mon 10/67:20 pmOPO - BOS
1 stop29h 35mSWISS
Deal found 4/28$612
This United Airlines deal was found by Cheapflights users on 4/27. 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 8/36:59 pmBOS - OPO
1 stop9h 46mUnited Airlines
Tue 8/2612:50 pmOPO - BOS
2 stops27h 22mUnited Airlines
Deal found 4/27$615
This American Airlines 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/281:20 pmBOS - OPO
2 stops13h 15mAmerican Airlines
Wed 9/1012:20 pmOPO - BOS
1 stop12h 30mAmerican Airlines
Deal found 4/28$618
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/65:40 pmBOS - OPO
1 stop34h 10mScandinavian Airlines
Fri 8/225:55 pmOPO - BOS
1 stop26h 40mScandinavian Airlines
Deal found 4/28$621
This British Airways 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/147:40 pmBOS - OPO
1 stop18h 00mBritish Airways
Mon 5/1912:20 pmOPO - BOS
2 stops15h 29mBritish Airways
Deal found 4/28$622
This Air Canada deal was found by Cheapflights users on 4/27. 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 8/113:20 pmBOS - OPO
1 stop13h 15mAir Canada
Tue 8/1912:50 pmOPO - BOS
2 stops27h 38mAir Canada
Deal found 4/27$630
This KLM 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/95:20 pmBOS - OPO
1 stop10h 05mKLM
Tue 7/226:35 amOPO - BOS
1 stop13h 30mKLM
Deal found 4/28$631
This Lufthansa deal was found by Cheapflights users on 4/27. 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.
Tue 8/510:00 pmBOS - OPO
1 stop12h 45mLufthansa
Fri 8/226:15 amOPO - BOS
1 stop16h 25mLufthansa
Deal found 4/27$656

Cheapflights Fare Finder

Customize your flight search to find flights from Boston 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 April 28, 2025.
Use the filters below to find and compare flights from Boston to Porto that are best for you.

Fly from

Boston

Fly to

Porto

Route

Depart

Return

Price

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Wed 5/28

9:20 pm-11:40 am

1 stop9h 20m

Porto

Wed 6/4

12:20 pm-7:50 pm

1 stop12h 30m

$599

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Sun 5/11

4:15 pm-6:50 am

3 stops33h 35m

Porto

Fri 5/16

8:45 pm-2:00 pm

2 stops22h 15m

$602

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Wed 5/28

1:20 pm-7:35 am

2 stops13h 15m

Porto

Wed 9/10

12:20 pm-7:50 pm

1 stop12h 30m

$618

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Wed 5/14

7:40 pm-6:40 pm

1 stop18h 00m

Porto

Mon 5/19

12:20 pm-10:49 pm

2 stops15h 29m

$622

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Mon 5/26

11:15 pm-10:55 am

Nonstop6h 40m

Porto

Wed 6/4

6:10 pm-8:45 pm

Nonstop7h 35m

$630

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Wed 7/9

5:20 pm-8:25 am

1 stop10h 05m

Porto

Wed 7/16

9:20 am-8:20 pm

1 stop16h 00m

$631

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Wed 7/9

5:20 pm-8:25 am

1 stop10h 05m

Porto

Mon 7/14

6:25 pm-4:30 pm

1 stop27h 05m

$632

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Sun 5/11

11:55 pm-8:00 am

1 stop27h 05m

Porto

Fri 5/16

1:40 pm-9:05 pm

1 stop12h 25m

$647

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Mon 7/7

8:47 am-9:35 am

2 stops19h 48m

Porto

Tue 7/15

12:50 pm-11:14 am

2 stops27h 24m

$658

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Wed 7/9

6:00 am-9:20 am

2 stops22h 20m

Porto

Fri 7/18

6:00 am-9:35 am

2 stops32h 35m

$669

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/27

Showing 1-10 of 24 results
1
2
3

Compare providers for flights from Boston to Porto

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Boston to Porto in April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 stars
JustAirTicketPrice Accuracy-Trust Score*3 stars
FareScanPrice Accuracy-Trust Score*3 stars
SmartFaresPrice Accuracy1 starTrust Score*1 star
MytripPrice Accuracy3 starsTrust Score*3 stars
oojoPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Boston-Porto flights, users find the pricing of AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Boston-Porto flight deals on Cheapflights vs. AranGrant >95% of the time. Price accuracy is based on data collected from Boston-Porto flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Boston-Porto flights, Cheapflights users trust AranGrant the most. AranGrant has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Boston-Porto flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Boston to Porto

Have a flexible travel schedule? Discover the best time to fly to Porto from Boston 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 Boston to Porto

How far ahead should I book a flight from Boston to Porto?

Use this chart to determine the optimal time to book a round-trip flight from Boston to Porto. Price data was last updated on April 25, 2025.

To ensure you get the cheapest price possible for a flight from Boston to Porto, you should look to book at least 40 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, January is the cheapest month in which you can book a flight from Boston to Porto (average of $523). Flying from Boston 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.

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

Find hourly flight availability from Boston 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 April 28, 2025.

It’s optimal to fly from Boston to Porto in the morning. By choosing this option you can save up to 8% on the cost of your flight, compared to a flight in the evening.

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 April 28, 2025.
Get a feel of what it's like to fly with Delta, KLM and Azores Airlines from Boston to Porto by reading reviews from past customers. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,927 reviews

Comfort

7.9

Entertainment

7.9

Food

7.3

Boarding

8.2

Overall

8.0

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
7,927 reviews
Delta
8.0
Very good
7,927 reviews

Comfort

7.9

Entertainment

7.9

Food

7.3

Boarding

8.2

Overall

8.0

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
1,333 reviews
Delta
8.0
Very good
7,927 reviews

Comfort

7.9

Entertainment

7.9

Food

7.3

Boarding

8.2

Overall

8.0

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
7,927 reviews

Comfort

7.9

Entertainment

7.9

Food

7.3

Boarding

8.2

Overall

8.0

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
1,587 reviews
Delta
8.0
Very good
7,927 reviews

Comfort

7.9

Entertainment

7.9

Food

7.3

Boarding

8.2

Overall

8.0

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.
United Airlines
7.4
Good
8,694 reviews
Delta
8.0
Very good
7,927 reviews

Comfort

7.9

Entertainment

7.9

Food

7.3

Boarding

8.2

Overall

8.0

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 Boston to Porto. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How popular is this Boston to Porto flight route?

    Flights from Boston Logan Intl to Porto have been viewed 23 times in the past calendar month.

  • What are the cheapest airlines flying from Boston to Porto round-trip?

    According to our current data, Iberia ($599), American Airlines ($618), and British Airways ($622) offers the cheapest pricing from Boston to Porto. These flights start at 10% lower than the current average price 3 months from now.

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

    One-way options have recently been found by users for as low as $300 on Iberia. Other airlines that offer cheap prices include TAP AIR PORTUGAL from $311 and PLAY from $318 one-way.

  • What are the cheapest flights from Boston to Porto?

    Looking at all options, your cheapest flight can be booked for $239. While the most popular route (Boston Logan Intl - Porto) can be booked for $508 on average our data indicates $1,122 when flying from Boston to Porto.

  • Where are the most common layover locations when flying from Boston to Porto?

    Flights departing from Boston and landing in Porto layover in Lisbon most frequently. Ponta Delgada is the second most popular location for layovers on flights from Boston to Porto. Madrid sees the third most layovers on flights from Boston to Porto.

  • What are some popular things to do or see while on a layover in Lisbon?

    The majority of Lisbon visitors spend their time at Chiado, Praça do Marquês de Pombal, and Centro Cultural de Belém. Travelers on a layover in Lisbon can visit Chiado, Praça do Marquês de Pombal, and Centro Cultural de Belém, by traveling 4.5 mi, 3.6 mi, and 6.8 mi, respectively after landing at Lisbon Humberto Delgado. Travelers in need of a car in Lisbon can rent one for about $22 per day.

  • What are points of interest worth seeing during a layover in Madrid?

    If you're on a layover in Madrid and looking for things to do, consider visiting Puerta del Sol, Plaza Mayor, or Spain Building. Travelers on a layover in Madrid can visit Puerta del Sol, Plaza Mayor, and Spain Building, by traveling 8.4 mi, 8.6 mi, and 8.5 mi, respectively after landing at Madrid Barajas. Those looking to explore during their layover in Madrid can rent a car from Madrid Barajas for about $29 per day.

  • Where are the least popular layover locations for Boston to Porto flights?

    Flights departing from Boston and landing in Porto layover in Paris least frequently. Amsterdam follows Paris in terms of the least common layover location on Boston to Porto flights.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Boston to Porto (average of $523). Flying from Boston 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 Boston?

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

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Top 10 airlines flying from Boston to Porto

Discover the top 10 airlines that operate flights from Boston to Porto. 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 April 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
Azores AirlinesCheapest$327Average$614FlexibilityNo cancel feeOn-time74%
SWISSCheapest$466Average$758FlexibilityNo cancel feeOn-time79%
IberiaCheapest$506Average$681FlexibilityNo cancel feeOn-time77%
DeltaCheapest$514Average$774FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$517Average$658FlexibilityNo cancel feeOn-time75%
LufthansaCheapest$520Average$735FlexibilityNo cancel feeOn-time76%
TAP AIR PORTUGALCheapest$520Average$753FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$534Average$729FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$548Average$691FlexibilityNo cancel feeOn-time70%
Air FranceCheapest$552Average$934FlexibilityNo cancel feeOn-time77%

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