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$358+ 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 8/27. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — OPO
Jun 23 — Jun 301
Mon 6/23
Mon 6/30
1 adult, Economy
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Cheapflights Tip: The best prices from Boston Logan Intl to Porto are usually found in January or November, booked 42 days in advance, depart on a Friday or Tuesday 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 June 18, 2025.

Round-trip from

$596
(Iberia)

One-way from

$358
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$826

Good round-trip deal

$734 or less

Good one-way deal

$442 or less
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. 15% potential increase in price ($123 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($16 potential savings vs. average RT price).
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Average for round-trip flights in June 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 June 18, 2025.

This Iberia deal was found by Cheapflights users on 6/17. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/304:30 pmBOS - OPO
1 stop22h 25mIberia
Fri 9/58:15 amOPO - BOS
1 stop11h 45mIberia
Deal found 6/17$596
This KLM deal was found by Cheapflights users on 6/18. 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 8/286:57 pmBOS - OPO
1 stop15h 33mKLM
Sun 9/149:20 amOPO - BOS
1 stop16h 00mKLM
Deal found 6/18$598
This Kiwi.com deal was found by Cheapflights users on 6/18. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/2311:00 pmBOS - OPO
1 stop11h 35mMultiple Airlines
Tue 9/911:20 amOPO - BOS
1 stop14h 55mMultiple Airlines
Deal found 6/18$599
This Cheapflightsfares deal was found by Cheapflights users on 6/17. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/2710:35 pmBOS - OPO
Nonstop6h 40mTAP AIR PORTUGAL
Sat 9/1311:00 amOPO - BOS
1 stop14h 05mTAP AIR PORTUGAL
Deal found 6/17$601
This British Airways deal was found by Cheapflights users on 6/17. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/287:45 pmBOS - OPO
1 stop19h 35mBritish Airways
Tue 9/98:40 pmOPO - BOS
1 stop28h 30mBritish Airways
Deal found 6/17$604
This United Airlines deal was found by Cheapflights users on 6/17. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/163:20 pmBOS - OPO
1 stop13h 15mUnited Airlines
Tue 8/196:00 amOPO - BOS
2 stops34h 01mUnited Airlines
Deal found 6/17$606
This Air Canada deal was found by Cheapflights users on 6/17. 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 Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/136:55 pmBOS - OPO
2 stops33h 40mAir Canada
Fri 7/186:00 amOPO - BOS
2 stops32h 35mAir Canada
Deal found 6/17$607
This Lufthansa deal was found by Cheapflights users on 6/17. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/28:05 pmBOS - OPO
1 stop22h 15mLufthansa
Sat 7/196:15 amOPO - BOS
1 stop16h 25mLufthansa
Deal found 6/17$617
This Delta deal was found by Cheapflights users on 6/16. 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.
Sat 9/65:30 pmBOS - OPO
2 stops17h 05mDelta
Sat 9/274:20 pmOPO - BOS
2 stops20h 05mDelta
Deal found 6/16$625
This American Airlines deal was found by Cheapflights users on 6/18. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/69:20 pmBOS - OPO
1 stop9h 20mAmerican Airlines
Sat 9/278:15 amOPO - BOS
2 stops15h 34mAmerican Airlines
Deal found 6/18$629
This SWISS deal was found by Cheapflights users on 6/16. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/265:05 pmBOS - OPO
1 stop13h 25mSWISS
Wed 9/1012:20 pmOPO - BOS
1 stop32h 05mSWISS
Deal found 6/16$646
This Brussels Airlines deal was found by Cheapflights users on 6/16. 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 Brussels Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/278:05 pmBOS - OPO
2 stops35h 00mBrussels Airlines
Thu 9/1112:55 pmOPO - BOS
2 stops32h 05mBrussels Airlines
Deal found 6/16$704

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 June 18, 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

Sat 8/30

4:30 pm-7:55 pm

1 stop22h 25m

Porto

Fri 9/5

8:15 am-3:00 pm

1 stop11h 45m

$596

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Thu 8/28

6:57 pm-3:30 pm

1 stop15h 33m

Porto

Sun 9/14

9:20 am-8:20 pm

1 stop16h 00m

$598

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Sat 8/23

11:00 pm-3:35 pm

1 stop11h 35m

Porto

Tue 9/9

11:20 am-9:15 pm

1 stop14h 55m

$599

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Wed 8/27

10:35 pm-10:15 am

Nonstop6h 40m

Porto

Sat 9/13

11:00 am-8:05 pm

1 stop14h 05m

$601

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Thu 8/28

7:45 pm-8:20 pm

1 stop19h 35m

Porto

Tue 9/9

8:40 pm-8:10 pm

1 stop28h 30m

$604

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Sat 8/16

3:20 pm-9:35 am

1 stop13h 15m

Porto

Tue 8/19

6:00 am-11:01 am

2 stops34h 01m

$606

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Sun 7/13

6:55 pm-9:35 am

2 stops33h 40m

Porto

Fri 7/18

6:00 am-9:35 am

2 stops32h 35m

$607

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Thu 8/21

12:54 pm-7:35 am

2 stops13h 41m

Porto

Sun 8/31

8:15 am-3:00 pm

1 stop11h 45m

$608

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Wed 7/2

8:05 pm-11:20 pm

1 stop22h 15m

Porto

Sat 7/19

6:15 am-5:40 pm

1 stop16h 25m

$617

BostonPorto

BOS - OPO

BOSOPO

Boston Logan Intl

Sat 9/6

5:30 pm-3:35 pm

2 stops17h 05m

Porto

Sat 9/27

4:20 pm-7:25 am

2 stops20h 05m

$625

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/16

Showing 1-10 of 29 results
1
2
3

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 June 13, 2025.

To ensure you get the cheapest price possible for a flight from Boston to Porto, you should look to book at least 42 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 $1,040). 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 June 18, 2025.

It’s optimal to fly from Boston to Porto in the morning. By choosing this option you can save up to 20% 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 June 18, 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
7,964 reviews

Boarding

8.2

Overall

8.0

Crew

8.5

Entertainment

7.9

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,964 reviews
Delta
8.0
Very good
7,964 reviews

Boarding

8.2

Overall

8.0

Crew

8.5

Entertainment

7.9

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
KLM
7.8
Good
1,363 reviews
Delta
8.0
Very good
7,964 reviews

Boarding

8.2

Overall

8.0

Crew

8.5

Entertainment

7.9

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Azores Airlines
7.6
Good
66 reviews
Delta
8.0
Very good
7,964 reviews

Boarding

8.2

Overall

8.0

Crew

8.5

Entertainment

7.9

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
SWISS
7.5
Good
1,632 reviews
Delta
8.0
Very good
7,964 reviews

Boarding

8.2

Overall

8.0

Crew

8.5

Entertainment

7.9

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,810 reviews
Delta
8.0
Very good
7,964 reviews

Boarding

8.2

Overall

8.0

Crew

8.5

Entertainment

7.9

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

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 ($596), KLM ($598), and TAP AIR PORTUGAL ($601) offers the cheapest pricing from Boston to Porto. These flights start at 9% 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 $371 on PLAY. Other airlines that offer cheap prices include TAP AIR PORTUGAL from $385 and United Airlines from $429 one-way.

  • What are the cheapest flights from Boston to Porto?

    Looking at all options, your cheapest flight can be booked for $321. While the most popular route (Boston Logan Intl - Porto) can be booked for $370 on average our data indicates $1,254 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. Madrid is the second most popular location for layovers on flights from Boston to Porto. Ponta Delgada 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 Londres. Travelers on a layover in Lisbon can visit Chiado, Praça do Marquês de Pombal, and Londres, by traveling 4.5 mi, 3.6 mi, and 2.3 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 some popular points of interest to see during a layover in Madrid?

    Puerta del Sol, Plaza Mayor, and Spain Building are the most popular attractions in Madrid if you're in need of something to do during your layover. Puerta del Sol, Plaza Mayor, and Spain Building can be accessed by traveling approximately 8.4 mi, 8.6 mi, and 8.5 mi, respectively from Madrid Barajas. Those looking to explore during their layover in Madrid can rent a car from Madrid Barajas for about $27 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 $1,040). 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
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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 June 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
Azores AirlinesCheapest$314Average$601FlexibilityNo cancel feeOn-time74%
IberiaCheapest$418Average$643FlexibilityNo cancel feeOn-time77%
SWISSCheapest$452Average$653FlexibilityNo cancel feeOn-time79%
KLMCheapest$514Average$654FlexibilityNo cancel feeOn-time75%
DeltaCheapest$514Average$756FlexibilityNo cancel feeOn-timeN/A
LufthansaCheapest$515Average$693FlexibilityNo cancel feeOn-time76%
TAP AIR PORTUGALCheapest$525Average$768FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$544Average$771FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$546Average$691FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$566Average$741FlexibilityNo cancel feeOn-time69%

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