$257 Find Cheap Flights from Boston to Portugal

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Boston to Portugal departing on 8/25. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Cheap Flights from Boston to Portugal

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Lisbon
Lisbon1 stop$773
Porto
Portononstop$649
Faro
Faro1 stop$720
Funchal
Funchal1 stop$675
Ponta Delgada
Ponta Delgadanonstop$800
Lajes
Lajes1 stop$656
Pico Island
Pico Island1 stop$924
Horta
Horta1 stop$930
Porto Santo
Porto Santo1 stop$703
Vila do Porto
Vila do Porto1 stop$787
Velas
Velas2 stops$760
Corvo Island
Corvo Island2 stops$1,048
Lisbon
Lisbon1 stop$773
Porto
Portononstop$649
Faro
Faro1 stop$720
Funchal
Funchal1 stop$675
Ponta Delgada
Ponta Delgadanonstop$800
Lajes
Lajes1 stop$656
Pico Island
Pico Island1 stop$924
Horta
Horta1 stop$930
Porto Santo
Porto Santo1 stop$703
Vila do Porto
Vila do Porto1 stop$787
Velas
Velas2 stops$760
Corvo Island
Corvo Island2 stops$1,048

Book Cheap Boston to Portugal Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Boston to Portugal that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Boston to Portugal

Mon, Jul 6 - Fri, Sep 4
Multiple Airlines Logo
5:45 am - 7:00 am
BOS
-
OPO
20h 15m
1 stop
Multiple Airlines Logo
8:40 am - 3:10 pm
OPO
-
BOS
11h 30m
1 stop
$649Multiple Airlines
Sun, Oct 18 - Tue, Oct 27
TAP AIR PORTUGAL Logo
10:40 pm - 3:00 pm
BOS
-
OPO
11h 20m
1 stop
TAP AIR PORTUGAL Logo
5:50 pm - 9:45 pm
OPO
-
BOS
7h 55mnonstop
$650TAP AIR PORTUGAL
Sun, Jul 12 - Tue, Nov 10
Multiple Airlines Logo
9:35 am - 6:50 am
BOS
-
OPO
16h 15m
2 stops
Multiple Airlines Logo
9:10 am - 8:20 pm
OPO
-
BOS
16h 10m
2 stops
$654Multiple Airlines
Tue, Jul 28 - Fri, Aug 28
United Airlines Logo
3:35 pm - 7:00 am
BOS
-
OPO
10h 25m
1 stop
United Airlines Logo
9:00 am - 9:59 pm
OPO
-
BOS
17h 59m
1 stop
$655United Airlines
Fri, Oct 30 - Thu, Nov 5
United Airlines Logo
6:00 am - 9:30 am
BOS
-
OPO
23h 30m
1 stop
United Airlines Logo
12:35 pm - 9:24 am
OPO
-
BOS
25h 49m
2 stops
$656United Airlines
Sun, Jul 19 - Mon, Sep 14
KLM Logo
4:00 pm - 10:25 am
BOS
-
OPO
13h 25m
1 stop
KLM Logo
8:10 pm - 1:19 pm
OPO
-
BOS
22h 09m
1 stop
$661KLM
Sun, Nov 1 - Sat, Nov 7
Azores Airlines Logo
9:25 pm - 11:40 am
BOS
-
FNC
9h 15m
1 stop
Azores Airlines Logo
11:55 am - 8:00 pm
FNC
-
BOS
13h 05m
1 stop
$705Azores Airlines
Thu, Nov 5 - Thu, Nov 12
Azores Airlines Logo
9:25 pm - 11:40 am
BOS
-
FNC
9h 15m
1 stop
Azores Airlines Logo
11:55 am - 8:00 pm
FNC
-
BOS
13h 05m
1 stop
$711Azores Airlines
Wed, Sep 30 - Mon, Oct 12
KLM Logo
7:00 pm - 7:30 pm
BOS
-
FAO
19h 30m
1 stop
KLM Logo
9:45 pm - 4:36 pm
FAO
-
BOS
23h 51m
1 stop
$737KLM
Wed, Jul 22 - Wed, Jul 29
Iberia Logo
9:05 pm - 11:50 am
BOS
-
LIS
9h 45m
1 stop
Iberia Logo
2:00 pm - 9:05 pm
LIS
-
BOS
12h 05m
1 stop
$783Iberia
Booking Insights

KAYAK's insights & trends for Boston to Portugal flights

Get data-powered insights and trends into flights from Boston to Portugal to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest Boston to Portugal flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest ticket to Portugal from Boston found in the last 72 hours was to Ponta Delgada, at $447 round-trip. The most popular route is from Boston (BOS) to Lisbon (LIS), and the cheapest round-trip airline ticket found on this route in the last 72 hours was $688.

What is the cheapest time of day to fly to Portugal?

The average price for all round-trip flights from Boston to Portugal depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.

The cheapest time of day to fly to Portugal is generally in the evening, when round-trip flights cost $806 on average. Morning departures are around 100% cheaper than evening flights, on average. The most expensive time of day to fly to Portugal is generally at night, which is peak travel time and where the average cost of a ticket is $818.

Can I save money by flying with a layover from Boston to Portugal?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 2 stops layover the cheapest option at $825 on average.

What is the cheapest month to fly from Boston to Portugal?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Boston to Portugal, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Boston to Portugal is November, when tickets cost $574 (return) on average. On the other hand, the most expensive months are May and December, when the average cost of round-trip tickets is $970 and $970 respectively.

What’s the cheapest day of the week to fly from Boston to Portugal?

The average price of all round-trip flights from Boston to Portugal clicked on KAYAK for each day over the last 12 months.

Your flight ticket price will generally be cheaper if you fly to Portugal on a Wednesday and more expensive on a Thursday. On your return trip to Boston, you should consider flying back on a Tuesday, and avoid Sundays for better deals.

How far in advance should I book a flight from Boston to Portugal?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Boston to Portugal, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Boston to Portugal, you should book around 3 weeks before departure, which saves you about 25% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 14 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$257
Best time to beat the crowds with an average 15% drop in price.
Most popular time to fly with an average 21% increase in price.
Flight from Boston to Ponta Delgada

Flights from Boston to Portugal: the best tips from KAYAK users

Insights shared by verified travelers who flew the route from Boston to Portugal 
RebeccaFlew with TAP AIR PORTUGAL
BOS
-
OPO
Apr 2026
Flight was full and they made me check my bag, so come prepared to do so.
MaximFlew with TAP AIR PORTUGAL
BOS
-
LIS
Mar 2024
I was waiting for a flight boarding announcement in the Lounge in terminal C at Logan Airport in Boston, but the announcement never came. If I did not go to the gate to check, I might have missed the flight. So, do not count on the airline to communicate flight boarding information to the lounge staff. They are supposed to do that, but, apparently, sometimes it does not happen.

FAQs - booking Portugal flights

  • If my flight to Portugal will be arriving at Lisbon Humberto Delgado (LIS), are there public transportation options to get me from the airport to downtown Lisbon?

    There is a bus service provided by Rodoviária de Lisboa that makes the trip in around 15min for a cost of about EUR 5.25 (USD 6). You can also ride the Metro Lisboa for around 16min and pay about EUR 3.50 (USD 4).

  • Will I need to get a visa before I travel from Boston to Portugal and do I need a passport to make this trip?

    If you are making a trip to Portugal on vacation as a tourist and you do not plan on staying in Portugal for more than 90 days, you will not need a visa to make this trip. You will need to have a passport that stays valid for at least 90 days beyond your intended date of departure from Portugal. It is also important to make sure that your passport has at least two blank pages.

  • If my children are coming on the trip to Portugal and I plan on renting a car, what type of seatbelt laws do I need to know about in Portugal?

    Children that are traveling in vehicles in Portugal that are 15 months old or less must ride in a rear-facing car seat. From 15 months to four years old, they must ride in a forward-facing car seat. Children over the age of four years old but 12 years old or less must ride in a booster seat. All children riding in a vehicle in Portugal must ride in the rear seats of the vehicle.

  • If I have just gotten off a long flight from Boston to Lisbon, Portugal, will I be able to find any shower services at the airport?

    The airport in Lisbon offers showers in both the ABC Business Center as well as the ANA lounge. The ABC Business Center is located on the landside of Terminal 1 and the ANA Lounge is also located landside of Terminal 1 on the sixth floor. Both shower facilities work on a pay-per-use basis.

  • How does KAYAK find such low prices on flights from Boston to Portugal?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Boston to Portugal.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Boston to Portugal?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Boston to Portugal is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Boston to Portugal?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Boston to Portugal with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Boston to Portugal?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Boston to Portugal up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top tips for finding cheap flights to Portugal

  • One of the quickest and most convenient ways to get from downtown Boston to Boston Logan International Airport (BOS) is on the MBTA Blue Line that makes the trip in around 5min for a cost of around $2.50.
  • For those travelers that will be driving themselves to Boston Logan International Airport, the airport offers both central garage parking that offers easy access to all the terminal buildings plus more cost-effective economy garages that offer shuttle service to the terminal buildings from the garages.
  • If your kids are coming along with you on your trip to Portugal, Boston Logan International Airport offers several Kidport play area locations in all three terminals of the airport.
  • For nursing mothers that are traveling out of Boston Logan International Airport, there are nursery rooms available in all three of the terminal buildings of the airport. Each of the nursery rooms includes a changing counter, a sink, as well as a fold-down seat.
  • If you are bringing a four-legged friend along with you on your trip to Portugal, you'll be happy to learn that there are several animal relief areas at Boston Logan International Airport. There are outdoor areas outside of every terminal building and inside the terminal, there is one near Gate E7, Gate C 20, and Gate B 29.

Reviews of the top 5 airlines serving from Boston to Portugal

 
Need help choosing which airline to fly with from Boston to Portugal? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
DeltaOverall score based on 8452 reviews
7.2Food
7.8Entertainment
7.8Comfort
8.5Crew
8.1Boarding
Airline reviews

Bus to plane was delayed for no apparent reason and our luggage was still on the belt when they shut it off. Took about 20 minutes to turn it back on to get our luggage.

6.0 GoodAnonymous, May 2026
PDX - MSP
Read more Delta reviews

Bus to plane was delayed for no apparent reason and our luggage was still on the belt when they shut it off. Took about 20 minutes to turn it back on to get our luggage.

It was a pleasant surprise to have complimentary Wi-Fi on the flight

Much better than Latam, the worse airline company ever. I hope I don't have the need to fly Latam ever in my life again.

Seats in Delta Main are unbelievably close to the seat in front of. Hard to get a backpack under the seat.

The flight was operated by Latam. The aircraft had a technical issue and the flight was delayed for the next day. They grounded other passengers to get their airplane assigned to my flight. Most of he ground staff don't speak English (Orlando Airport), but were very polite.The crew on the other hand could speak English and Portuguese. On board service was good.

The agent at check in and at the gate were less than thrilled to be at work. I'm not a fan of Kayak's placement on the plane. I got put in the middle seat and none of my preferences were used.

In ATL they have two sets of departure screens. Follow what is on your airline's departure board - the ATL Airport Authority departure board had completely incorrect details about the gate assignment for my flight, which would have made me miss boarding.

Flight was delayed it was hot while sitting on the plane, one engine was working on the plane until they had to do some jimmy rigging down the runway in order for the other engine to charge up. It was ridiculous

The flight was very good and the staff was very friendly and helpful!

The only thing I would say is we tried to get on a standby earlier flight, but with our fair we couldn’t. That seems senseless to leave with open seats..

The flight crew was exceptionally friendly and helpful. Also the seats were comfortable and roomier than many other airlines.

The plane's pilots, including the captain himself, thanked me for the flight. I know it's just marketing, but it was really nice to see these people. It's a great idea. Airplane food is never "good," but the entire crew and flight organization were top-notch. I really liked Delta, and I think I've traveled all over the world, and that was something new for me. Maybe even the old planes, the B767, but next time I have a choice, Delta will be my first choice. Thank you, a satisfied passenger :)

The boarding was efficient. The entertainment system was a bit unstable but Air France has a good selection of movies.

They lost my bag and I still haven’t received it yet

They lost my bag and I still have not received it

Communication on the delay, rebooking and how to get a hotel was poor. Mails, airport check-in and transfer desk said different things.

Safe and stable made me sleepy and I slept and dreamt 😂😂😂😂

Food was really mediocre for premium economy in comparison to other airlines… the crew was nowhere to be found… 14 hour flight…

Worst airlines either. First leg was delayed because of crew not available. My connection was missed so they booked me automatically the next day! But, impossible to get anyone on site, web site does not let me access my reservation anymore, confirmed by useless agents over the phone. My 2-leg trip with part in business class arriving at 4:10pm ends up in an awful 3-leg arriving at 9pm the next day with no way to even choose the seats and of course at the very end of the plane. I can understand problems arrive but the way Air France handle it is just unacceptable. You are on your own. Apparently getting you to your destination is the only thing they consider their duty. The customer experience and fatigue is none of their concern. And I have a status with them. I will reconsider my priorities when flying with Air France and encourage everyone to do the same.

Our flight crew were terrific. And they handle a difficult passenger with finesse.

WiFi didn’t exist , seats were super cramped, lights stayed on near my seat for a long time while others were dimmed, the food/trash/drink cart hit my shoulder at least a couple of times while moving, food options were down to just one option by the time it got to my row, the utensils were garbage (knife bent at a couple of places by the time I was done eating) the spoon was very flimsy plastic

Friendliest Flight Attendant I’ve seen since I flew on Southwest Airlines. The whole trip was outstanding…and arrived Early!

It was good overall except from Omaha to Denver when flight a was a repeatedly delayed apparently due to some issue at Denver. Communications could have been handled better. I had to board then deboard with luggage and board again

I didn’t have a seat assignment and my seat was very dirty on the flight from Frankfurt to Budapest.

Left an hour and a half after the listed time. Up side was it had TV screens on the seat.

No screens or meal options. Freezing cold. Dirty seats. Left late.

O’hsre taxi and deboarding took 40 minutes. Needed 20 minutes extra time between connecting flights to avoid running through terminal.

Cree was organized and pleasant. Plane had good seating but as it’s a shuttle toilets hadn’t been thoroughly cleaned (eg. bins too full)

I liked that my son and I were reseated next to each other (we had different bookings). I liked that it was a directg flight and mostly on time. I liked that you provided pillows and blankets. Flight attendants were generally courteous. The messaging through wifi did not work well. The food was not good. Seats are very narrow and I felt slightly claustraphobic in the window seat.

Overall a good experience, but no wifi available for free or for purchase and we got wet from condensation or other water source during descent.

Everything was fine. No complaints. It would have been nice to get a drink w the flight. Also I would have liked notice that no meals were included beforehand.

In a 6 hr flight after paying over $700 dllrs of ticket and we still needed to pay for our own food and given ONLY a small glass of water!!! Will not be flying internationally anytime soon with them They are good for very short flights

No food was served on the flight. Boarding desk open two hours before departure. But they recommande to be there three hours before departure !! So we where a group waiting 1 hour in Line for nothing …

My flight from Toronto to PDL was one of the worst experiences of my travel history. I paid for an upgrade and did not receive it, and was also charged an exorbitant amount for a 25-inch bag, and when I tried to explain the situation, I was only told the flight was already over capacity. & I had to accept what I could get!, I am a frequent traveler and will not be flying your airline again!. The only thing positive in this entire trip wete the flight attendants, but other than that, everything else was very disappointing!

They charged us 100 Euro per bag on the return leg with no explanation.

Everything was perfect, clean and very nice staff. But the seat was uncomfortable compared to other companies and the food wasnt good

Flight wasn’t full so got to stretch out and sleep.

Boarding was delayed. Then when we queued, it took us to another long line to stand in. Flight had 0 entertainment. Not even a magazine. But they had a free meal and it was good!

You cannot add an additional luggage via the check in. It seems to be an issue with Azore Airline.

The facilities at PDL are absolutely appalling during a 4.5-hour connection. Passengers from multiple flights were crammed into a small area with insufficient seating and only a snack bar. The only bathroom was unisex, with one stall for men and another for women side by side. This is for hundreds of passengers. The connecting aircraft from PDL to JFK was downgraded/switched out to an Economy Class-only configuration without explanation, even though the aircraft with Comfort Class we arrived from FNC on remained at the stand. Those who paid for Comfort Class could not enjoy the better seating or catering. Food and drink aboard was sub-par. I would qualify it as one of our worst travel experiences in years.

Flight attendants in business class were rather indifferent While in second leg operated by Portugalia TAP subsidiary were outstanfy

Great service overall. One of the best international flight experiences Ive had.

The chicken was so dry it was impossible to eat. No substitute was offered. The port to charge my phone was broken and all I got was a shrug from the crew. The entertainment system was glitchy and subtitles didn’t load. Crew seemed fully uninterested and unfriendly.

The flight crew were absolute rock stars. When they came to the gate they looked like royalty, so chic. They also were extremely kind. Food was good and I loved the lack of plastic waste. The flight was lovely and smooth.

We were unable to check in due to technical problems on TAP’s end. The flight was delayed forty minutes with no reason given. We received timely notice of the flight delay. We were also notified of a gate change. The new gate was at a different terminal. When we got to the new terminal, we learned that we had to go back to the old terminal first to check in. This information should have been included along with the gate change notification. Also unexplained, the steward skipped us when offering breakfast.

They left our luggage uncovered on tarmac in pouring rain during an hour delay of departure! At our final destination, we found ALL OF OUR CLOTHES/SHOES soaked all the way through!! Our 1st connection plane was a great business class accommodation but only 50 minutes long. Our 2nd connection from Lisbon (another delay with luggage uncovered on tarmac) had only the extra legroom and mediocre food in business class - no entertainment and no extra comfort seating. Will not use TAP Air Portugal again!

The food left a lot to be desired. The crew was great

Horrible experience at tbe check in ladie she was very racist ,she doesn't speak portuguese too and forced me to check in my carrion bag and I saw everyone with carrion bag inside anda lot of space ,she was rude unprofessional

Departed late. Flight crew some of the most professional I have ever experienced. First time we’ve flown this airline

No difference between business class and normal same seat everything same, waste of money

Everything you need to know for your flight from Boston to Portugal

Information on your arrival and departure airports