$152 Cheap Flights from Boston (BOS) to Porto (OPO)

View $152 flight on Mon, Oct 13, 2025Opens in a new window

Popular airlines from Logan International Airport (BOS) to Porto Airport (OPO)

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Cheap Flights from Boston to Porto (BOS-OPO)

Prices were available within the past 7 days and start at $152 for one-way flights and $342 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Iberia
Tue, Oct 21 - Thu, Dec 11
BOS
Boston
OPO
Porto
$342 Roundtrip, found 3 hours ago
$342
Roundtrip
found 3 hours ago
Select Iberia flight, departing Tue, Oct 21 from Boston to Porto, returning Thu, Dec 11, priced at $342 found 3 hours ago
British Airways
Sun, Nov 16 - Fri, Nov 21
BOS
Boston
OPO
Porto
$344 Roundtrip, found 6 hours ago
$344
Roundtrip
found 6 hours ago
Select British Airways flight, departing Sun, Nov 16 from Boston to Porto, returning Fri, Nov 21, priced at $344 found 6 hours ago
American Airlines
Sun, Nov 16 - Fri, Nov 21
BOS
Boston
OPO
Porto
$344 Roundtrip, found 6 hours ago
$344
Roundtrip
found 6 hours ago
Select American Airlines flight, departing Sun, Nov 16 from Boston to Porto, returning Fri, Nov 21, priced at $344 found 6 hours ago
United
Sat, Oct 25 - Tue, Nov 4
BOS
Boston
OPO
Porto
$374 Roundtrip, found 1 hour ago
$374
Roundtrip
found 1 hour ago
Select United flight, departing Sat, Oct 25 from Boston to Porto, returning Tue, Nov 4, priced at $374 found 1 hour ago
Swiss International Air Lines
Tue, Nov 4 - Tue, Nov 18
BOS
Boston
OPO
Porto
$383 Roundtrip, found 1 hour ago
$383
Roundtrip
found 1 hour ago
Select Swiss International Air Lines flight, departing Tue, Nov 4 from Boston to Porto, returning Tue, Nov 18, priced at $383 found 1 hour ago
Lufthansa
Wed, Nov 5 - Fri, Nov 21
BOS
Boston
OPO
Porto
$389 Roundtrip, found 3 hours ago
$389
Roundtrip
found 3 hours ago
Select Lufthansa flight, departing Wed, Nov 5 from Boston to Porto, returning Fri, Nov 21, priced at $389 found 3 hours ago
Air Canada
Mon, Oct 27 - Fri, Nov 21
BOS
Boston
OPO
Porto
$396 Roundtrip, found 7 hours ago
$396
Roundtrip
found 7 hours ago
Select Air Canada flight, departing Mon, Oct 27 from Boston to Porto, returning Fri, Nov 21, priced at $396 found 7 hours ago
TAP Portugal
Sat, Oct 11 - Sun, Oct 19
BOS
Boston
OPO
Porto
$429 Roundtrip, just found
$429
Roundtrip
just found
Select TAP Portugal flight, departing Sat, Oct 11 from Boston to Porto, returning Sun, Oct 19, priced at $429 just found
Brussels Airlines
Tue, Jan 13 - Thu, Jan 22
BOS
Boston
OPO
Porto
$437 Roundtrip, found 2 days ago
$437
Roundtrip
found 2 days ago
Select Brussels Airlines flight, departing Tue, Jan 13 from Boston to Porto, returning Thu, Jan 22, priced at $437 found 2 days ago
Austrian Airlines
Mon, Sep 29 - Tue, Oct 14
BOS
Boston
OPO
Porto
$445 Roundtrip, found 13 hours ago
$445
Roundtrip
found 13 hours ago
Select Austrian Airlines flight, departing Mon, Sep 29 from Boston to Porto, returning Tue, Oct 14, priced at $445 found 13 hours ago

Find the cheapest month to fly from Boston (BOS) to Porto (OPO)

November is typically the cheapest month to fly

From $315 - $682 per traveler.

Graph displaying average flight prices per month

Alternative airports near Porto

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Dr. Francisco de Sa Carneiro OPO. Cheapest and Closest option available. Average driving time to city center is 14 minutes. Flights from $443
OPO
Dr. Francisco de Sa Carneiro
CheapestClosest
Average driving time to city center14 min
Flights from $443
Flights from Boston (BOS) to Porto (OPO)
Origin airport
Logan Intl.
Destination airport
Dr. Francisco de Sa Carneiro
Airlines serving
Air Canada, Air Europa, Air France, American Airlines, Austrian Airlines, British Airways, Brussels Airlines, Delta, Fly Play, ITA Airways, Iberia, KLM, Lufthansa, Royal Air Maroc, SATA International-Azores Airlines S.A., Scandinavian Airlines, Swiss International Air Lines, TAP Portugal, Turkish Airlines, United
Roundtrip price
$341
Distance
3137 mi
Average flight time
6 hours 40 mins

Boston to Porto Flights

The cheapest times to fly from Boston to Porto

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Boston to Porto are during the month of October. You can find some of the cheapest flights from Boston to Porto with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Boston to Porto

Sunday is one of the best days to book for cheap flights from Boston to Porto: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Boston to Porto

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Boston to Porto in 2025. You can also book with separate airlines for your outbound and return journeys, from $152 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Boston to Porto flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Boston to Porto airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Logan Intl. Airport (BOS) to Dr. Francisco de Sa Carneiro Airport (OPO) cost?
Snag a cheap one-way flight from $152 or cheap return flight from $342 from Logan Intl. Airport (BOS) to Dr. Francisco de Sa Carneiro Airport (OPO) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Logan Intl. Airport (BOS) to Dr. Francisco de Sa Carneiro Airport (OPO)?
October is the most affordable month to fly from BOS to OPO. Traveling during quieter months is often the key to scoring lower fares.
What is the cheapest airline that flies from Logan Intl. Airport (BOS) to Dr. Francisco de Sa Carneiro Airport (OPO)?
Use the filters on Expedia to compare different airlines and find the most affordable carrier that'll fly you from BOS to OPO. Then, sort your results by "Price (lowest to highest)" to snag the best deal available.
How many flights per day from Logan Intl. Airport (BOS) to Dr. Francisco de Sa Carneiro Airport (OPO)?
There aren't any daily direct flights from Logan Intl. Airport (BOS) to Dr. Francisco de Sa Carneiro Airport (OPO). But you can choose flights with layovers. Filter your search on Expedia to include one or two stops, and you'll be soaring above the clouds in no time at all.
What day of the week has the most flights from BOS to OPO?
Generally you'll find the widest variety of flight choices on a Friday. Tuesdays are often the quietest.* But this can vary based on the time of year, carrier and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Logan Intl. Airport (BOS) to Dr. Francisco de Sa Carneiro Airport (OPO)?
To avoid potential delays on the Logan Intl. Airport (BOS) to Dr. Francisco de Sa Carneiro Airport (OPO) route, aim to fly before 3 PM. Later flights have a 22% higher chance of being canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Logan Intl. Airport (BOS) to Dr. Francisco de Sa Carneiro Airport (OPO) last-minute?
Booking your ticket from BOS to OPO shortly before your journey is generally more expensive. But if there's some wiggle room with your departure times and dates, you could grab a cheap last-minute fare.
Is it cheaper to book a BOS to OPO flight and hotel package?
You'll typically save money by securing a BOS to OPO flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's simple to manage everything in one convenient place. Once you've chosen your preferred flights and accommodations, consider adding extras such as car rentals, tours and activities.
Can I cancel or change the date of my flight from Logan Intl. Airport (BOS) to Dr. Francisco de Sa Carneiro Airport (OPO)?
In most cases, you can modify or cancel your BOS to OPO flight. However, there may be additional charges, especially if you booked more than 24 hours ago. Double-check your itinerary for the airline's guidelines and fees on flight changes, or if you need further information, go to our Customer Service portal.

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*Available to One Key members.