S$518 Cheap Flights from Boston to Porto

View S$518 flight on Sun, 17 Aug, 2025Opens in a new window

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

  • Plan, book, fly with confidence

  • trending down icon
    Be in the know
    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon
    Book smarter
    Save up to 40% on select hotels after you book a flight*
  • payments icon
    Earn twice
    Earn your airline miles on top of our rewards
    Sign in

Cheap Flights from Boston to Porto (BOS-OPO)

Prices were available within the past 7 days and start at S$518 for one-way flights and S$850 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Thu, 14 Aug - Thu, 21 Aug
BOS
Boston
OPO
Porto
S$850 Return, found 4 days ago
S$850
Return
found 4 days ago
Select United flight, departing Thu, 14 Aug from Boston to Porto, returning Thu, 21 Aug, priced at S$850 found 4 days ago
United
Thu, 14 Aug - Thu, 21 Aug
BOS
Boston
OPO
Porto
S$852 Return, found 4 days ago
S$852
Return
found 4 days ago
Select United flight, departing Thu, 14 Aug from Boston to Porto, returning Thu, 21 Aug, priced at S$852 found 4 days ago
Swiss International Air Lines
Thu, 14 Aug - Thu, 21 Aug
BOS
Boston
OPO
Porto
S$878 Return, found 4 days ago
S$878
Return
found 4 days ago
Select Swiss International Air Lines flight, departing Thu, 14 Aug from Boston to Porto, returning Thu, 21 Aug, priced at S$878 found 4 days ago
KLM
Thu, 14 Aug - Thu, 21 Aug
BOS
Boston
OPO
Porto
S$891 Return, found 4 days ago
S$891
Return
found 4 days ago
Select KLM flight, departing Thu, 14 Aug from Boston to Porto, returning Thu, 21 Aug, priced at S$891 found 4 days ago
United
Thu, 14 Aug - Thu, 21 Aug
BOS
Boston
OPO
Porto
S$897 Return, found 4 days ago
S$897
Return
found 4 days ago
Select United flight, departing Thu, 14 Aug from Boston to Porto, returning Thu, 21 Aug, priced at S$897 found 4 days ago
Swiss International Air Lines
Thu, 14 Aug - Thu, 21 Aug
BOS
Boston
OPO
Porto
S$908 Return, found 4 days ago
S$908
Return
found 4 days ago
Select Swiss International Air Lines flight, departing Thu, 14 Aug from Boston to Porto, returning Thu, 21 Aug, priced at S$908 found 4 days ago
Lufthansa
Thu, 14 Aug - Thu, 21 Aug
BOS
Boston
OPO
Porto
S$911 Return, found 4 days ago
S$911
Return
found 4 days ago
Select Lufthansa flight, departing Thu, 14 Aug from Boston to Porto, returning Thu, 21 Aug, priced at S$911 found 4 days ago
Lufthansa
Thu, 14 Aug - Thu, 21 Aug
BOS
Boston
OPO
Porto
S$913 Return, found 4 days ago
S$913
Return
found 4 days ago
Select Lufthansa flight, departing Thu, 14 Aug from Boston to Porto, returning Thu, 21 Aug, priced at S$913 found 4 days ago
Swiss International Air Lines
Thu, 14 Aug - Thu, 21 Aug
BOS
Boston
OPO
Porto
S$920 Return, found 4 days ago
S$920
Return
found 4 days ago
Select Swiss International Air Lines flight, departing Thu, 14 Aug from Boston to Porto, returning Thu, 21 Aug, priced at S$920 found 4 days ago
Delta
Thu, 14 Aug - Thu, 21 Aug
BOS
Boston
OPO
Porto
S$947 Return, found 4 days ago
S$947
Return
found 4 days ago
Select Delta flight, departing Thu, 14 Aug from Boston to Porto, returning Thu, 21 Aug, priced at S$947 found 4 days ago

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

November is typically the cheapest month to fly

From S$399 - S$887 per traveller.

Graph displaying average flight prices per month

Boston to Porto route information
Origin airport
Logan Intl.
Destination airport
Dr. Francisco de Sa Carneiro
Return price
S$850
Distance
5019 km
Average flight time
6 hours 40 mins

Perfect flights from Boston to Porto

Your Journey from Boston to Porto

Start your unforgettable journey with Expedia. Our broad selection of flights from Boston to Porto caters to every travel need. Whether you're yearning for a romantic escape, a solo adventure, or a cultural immersion, we've got you covered.
 

Choosing Your Ideal Flight

With Expedia, you have access to a wide range of airlines, including Lufthansa, United, Delta, Iberia, British Airways, Swiss International Air Lines, KLM. Our selection of flights from Logan Intl. to Dr. Francisco de Sa Carneiro caters to every traveler's requirements, ensuring your journey aligns with your schedule. With options from 20 airlines, you're bound to find the perfect flight.
 

Maximizing Value with Boston to Porto Flights

Experience the joy of finding cheap flights from Logan Intl. to Dr. Francisco de Sa Carneiro that fit your budget. Keep an eye out for our special deals and discounts, and check our flexible one-way fares from S$518 and roundtrip prices from S$850*.
 

Pre-Flight Essentials

Ensure a smooth journey from Boston to Porto with Expedia. From information about check-in times and in-flight amenities to guidance on baggage policies, we provide all the essentials to prepare you for your flight.
 

Experience the Vibrant Porto

Picture yourself stepping off the plane in Porto and immersing yourself in the unique atmosphere of Porto. From local markets to cultural festivals, each city offers its distinct charm. Make the most of your trip by exploring local attractions and indulging in the local cuisine. With Expedia, explore all this and more, tailored to your budget.
 

Added Convenience on Your Boston to Porto Flight

Traveling with Expedia is more than just a flight. We offer details about in-flight amenities, baggage policies, and more to ensure a smooth and hassle-free journey. Choose from our variety of airlines and embark on a memorable journey from Boston to Porto.
 

Beyond the Flight – Exploring Porto

With Expedia, your adventure extends beyond the flight. Explore Porto at your own pace by renting a car or booking a hotel. Discover hidden gems off the beaten path and create unforgettable memories.
 

Book Your Flight from Boston to Porto with Confidence

Planning your next great adventure is a breeze with Expedia. Our user-friendly platform, unbeatable prices, and round-the-clock customer support make your travel experience seamless and stress-free. Embark on your journey from Boston to Porto with confidence. Book your travel arrangements with Expedia today.
 
*Note: Prices may vary based on availability and are subject to change.

Frequently asked questions

How much is a flight from BOS to OPO?
Based on fares quoted within the last 7 days on Expedia for flights departing within the next year, round-trip journeys from BOS to OPO start from S$850. Book today to get the best price for your next big adventure. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Logan Intl. Airport to Dr. Francisco de Sa Carneiro Airport (OPO)?
This varies between airlines, as each one has its own terms and conditions. Head to the Customer Service Portal, where you'll find instructions on how to cancel online.
How do I find cheap flights from Logan Intl. Airport (BOS) to OPO that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for BOS to OPO flights, you'll see a "no change fees" filter for you to select.
How far is the flight from BOS to Porto Airport?
With around 5,100 kilometres separating Boston and Maia, your flight will be a long one. Pack wisely to make your time on board more comfortable. Things like warm clothing and a good travel pillow can make a massive difference.
Which airlines fly direct from Logan Intl. Airport to OPO?
Direct flights aren't available, so you'll need to make at least one stop between Logan Intl. Airport (BOS) and Porto Airport. Make the most of the layover time to stretch your legs and grab a coffee.
Are Logan Intl. Airport to OPO flight tickets cheaper when they're purchased at the last minute?
Booking your trip from BOS to OPO last minute could be your ticket to a cheap deal. However, it could end up costing you a whole lot more! If you'd prefer not to take any chances, book well ahead of your departure date. In fact, Expedia has some of the biggest bargains up to a year in advance. If your preferred air carrier hasn't released tickets yet, check back frequently as deals are updated on Expedia all the time.

Explore a world of travel with Expedia

*Available to Expedia members.